Experimental Study Of The In Plane Behaviour Of All Masonry Infilled Frame Systems Under Lateral Loading

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Experimental Study of the In-Plane Behaviour of All-Masonry Infilled Frame Systems Under Lateral Loading

Author : Seyedali Hosseini
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)

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Book Synopsis Experimental Study of the In-Plane Behaviour of All-Masonry Infilled Frame Systems Under Lateral Loading by : Seyedali Hosseini

Download or read book Experimental Study of the In-Plane Behaviour of All-Masonry Infilled Frame Systems Under Lateral Loading written by Seyedali Hosseini and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study is part of on-going experimental research, aiming to further investigate the in-plane behaviour of concrete masonry infills bounded by reinforced masonry frames (all-masonry infilled frames). A total of six all-masonry infilled frame specimens was tested under in-plane loading applied at the frame top beam level to specimen failure. The parameters studied included vertical loading, infill aspect ratio, presence of interfacial gaps, and cyclic loading. Two levels of vertical load were studied where the vertical load was applied through frame columns and held constant while the lateral load was monotonically increased to the specimen failure. In the infill aspect ratio study, two specimens with different aspect ratios (one squat and one slender) were constructed and tested under monotonic lateral loading. The last two specimens had window openings and pre-defined gaps and were tested under cyclic lateral loading.

Experimental Investigation of the In-Plane Behaviour of Concrete Masonry Infills Bounded by Reinforced Masonry Frames

Author : Saber Agaei Foroushani
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)

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Book Synopsis Experimental Investigation of the In-Plane Behaviour of Concrete Masonry Infills Bounded by Reinforced Masonry Frames by : Saber Agaei Foroushani

Download or read book Experimental Investigation of the In-Plane Behaviour of Concrete Masonry Infills Bounded by Reinforced Masonry Frames written by Saber Agaei Foroushani and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was carried out to investigate the in-plane behaviour of all-masonry infilled frames, i.e., concrete masonry infills bounded by reinforced masonry frames. To this end, six specimens including one masonry bare frame and five all-masonry infilled frame specimens were subjected to lateral loading applied at the frame top beam level to failure. The parameters studied included masonry infill strength, infill reinforcement, and presence of vertical loading. Masonry infill strength study considered a regular and a weaker strength of infills; infill reinforcement study considered two scenarios of horizontal reinforcement in the infill where one was the bed joint reinforcement implemented every other course in the infill and the other was the two bond beams implemented in the infill; and vertical load study involved one specimen under combined vertical and lateral loading where the vertical load was applied to the top beam and held constant while the lateral loading was increased to the specimen failure. Load vs. displacement response, cracking pattern and load, and failure mode and ultimate load for each specimen were obtained and discussed in detail. The experimental results were used to evaluate the validity of stiffness and strength provisions contained in the Canadian (CSA S304.14) and American (TMS 402/602.16) masonry design standards. The performance of specimens was also compared with the infills of the same geometry but bounded by RC frames. For all infilled frame specimens, the final failure mode seems to be controlled by severe diagonal cracking extending into the boundary columns or a combination of diagonal cracking and shear sliding as in the case of horizontally reinforced infills. No evident corner crushing was observed. An increase in infill strength increased the ultimate load of the infilled frame but showed no evident correlation with the infill-frame system stiffness. Implementing infill reinforcement did not have a significant effect on the ultimate strength but resulted in an increase in both the initial and cracking stiffnesses as well as ductility of the specimen. Presence of vertical load resulted in a marked increase in ultimate load of the infilled specimen but at the expense of a reduced ductility. In general, CSA S304-14 overestimated whereas TMS 402/602 underestimated the stiffness with a similar range of disparity to the test results. In the case of strength prediction, CSA S304 performed better than TMS 402/602 with predicted values closer to the test results. The comparison with infilled RC frames showed that behaviour, strength, and ductility of all-masonry infilled frames are similar to, and in some cases, slightly better than infilled RC frames.

Experimental Study of Masonry-Infilled Steel Frames Subjected to Combined Axial and In-Plane Lateral Loading

Author : Pouria Behnam Manesh
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis Experimental Study of Masonry-Infilled Steel Frames Subjected to Combined Axial and In-Plane Lateral Loading by : Pouria Behnam Manesh

Download or read book Experimental Study of Masonry-Infilled Steel Frames Subjected to Combined Axial and In-Plane Lateral Loading written by Pouria Behnam Manesh and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

EXPERIMENTAL AND NUMERICAL STUDY OF THE IN-PLANE AND OUT-OF-PLANE BEHAVIOUR OF UNREINFORCED MASONRY INFILLS BOUNDED BY RC FRAMES.

Author : Ehsan Nasiri
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)

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Book Synopsis EXPERIMENTAL AND NUMERICAL STUDY OF THE IN-PLANE AND OUT-OF-PLANE BEHAVIOUR OF UNREINFORCED MASONRY INFILLS BOUNDED BY RC FRAMES. by : Ehsan Nasiri

Download or read book EXPERIMENTAL AND NUMERICAL STUDY OF THE IN-PLANE AND OUT-OF-PLANE BEHAVIOUR OF UNREINFORCED MASONRY INFILLS BOUNDED BY RC FRAMES. written by Ehsan Nasiri and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A literature review revealed that there is limited technical information available on the subject of masonry infilled frames, in particular, the interaction between the infill and its bounding frame and how this interaction affects the infilled system behaviour and strength. This research was then conducted to further the understanding of the infill-to-frame interaction considering a range of geometric, material, loading characteristics of the infilled frame systems. To that end, both experimental and numerical studies were performed with the focus on the concrete masonry infills bounded by reinforced concrete frames. Both in-plane and out-of-plane loading situations on the infilled frames were considered. The experimental testing was designed to provide physical results of failure modes, behaviour and strength of infilled frames as affected by several key parameters. The numerical study began with development of a 3D finite element model capable of incorporating properties of masonry infilled frames using ABAQUS. An extensive validation process on the model ensued using the physical results. Once verified, the model was used in a finite element study where several geometric and material parameters with extended range of variations were systematically studied. In the experimental study, a total of 17 specimens were tested of which 1) ten were subjected to in-plane loading; 2) four were subjected to out-of-plane loading; and 3) three were tested under in-plane loading first and then tested under out-of-plane loading to failure. Infill openings and infill-to-frame interfacial gaps were designed as two varying parameters for 1) and 2) test scenarios. The varying in-plane damage was the parameter for 3) testing scenario. While the diagonal cracking followed by corner crushing predominated the in-plane failure, two-way arching with the shear cracking through the concrete masonry unit webs was identified as the main load-resisting mechanism in out-of-plane tests. As for the in-plane damaged specimens, the out-of-plane capacity was reduced as a function of experienced in-plane drift ratio. In the numerical study, the finite element model was shown to be capable of predicting the load-displacement responses as well as the cracking pattern and failure modes accurately for both in-plane and out-of-plane loading scenarios. The correlations between each studied parameter and the behaviour and strength of masonry infilled frames were presented and discussed. Modifications on the out-of-plane design method currently adopted by the American masonry standard (TMS 402/602-16) were proposed and was shown to improve the performance of the method. A lower-bound equation for evaluating the out-of-plane strength of masonry infills with prior in-plane damage was proposed and it showed to produce better estimate when compared to the existing method.

Brick and Block Masonry

Author : Claudio Modena
Publisher : CRC Press
ISBN 13 : 1315342669
Total Pages : 4087 pages
Book Rating : 4.3/5 (153 download)

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Book Synopsis Brick and Block Masonry by : Claudio Modena

Download or read book Brick and Block Masonry written by Claudio Modena and published by CRC Press. This book was released on 2016-11-03 with total page 4087 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brick and Block Masonry - Trends, Innovations and Challenges contains the lectures and regular papers presented at the 16th International Brick and Block Masonry Conference (Padova, Italy, 26-30 June 2016). The contributions cover major topics: - Analysis of masonry structures - Bond of composites to masonry - Building physics and durability - Case studies - Codes and standards - Conservation of historic buildings - Earthen constructions - Eco-materials and sustainability - Fire resistance, blasts, and impacts - Masonry bridges, arches and vaults - Masonry infill walls and RC frames - Masonry materials and testing - Masonry repair and strengthening - New construction techniques and technologies - Reinforced and confined masonry - Seismic performance and vulnerability assessment In an ever-changing world, in which innovations are rapidly implemented but soon surpassed, the challenge for masonry, the oldest and most traditional building material, is that it can address the increasingly pressing requirements of quality of living, safety, and sustainability. This abstracts volume and full paper USB device, focusing on challenges, innovations, trends and ideas related to masonry, in both research and building practice, will proof to be a valuable source of information for researchers and practitioners, masonry industries and building management authorities, construction professionals and educators.

EXPERIMENTAL STUDY OF THE EFFECT OF INTERFACIAL GAPS ON THE IN-PLANE BEHAVIOUR OF MASONRY INFILLED RC FRAMES.

Author : Chuanjia Hu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis EXPERIMENTAL STUDY OF THE EFFECT OF INTERFACIAL GAPS ON THE IN-PLANE BEHAVIOUR OF MASONRY INFILLED RC FRAMES. by : Chuanjia Hu

Download or read book EXPERIMENTAL STUDY OF THE EFFECT OF INTERFACIAL GAPS ON THE IN-PLANE BEHAVIOUR OF MASONRY INFILLED RC FRAMES. written by Chuanjia Hu and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Experimental Studies of Different RCC Structures.

Author : Dr. Ashad ullah Qureshi
Publisher : Concepts Books Publication
ISBN 13 :
Total Pages : 59 pages
Book Rating : 4.8/5 (367 download)

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Book Synopsis Experimental Studies of Different RCC Structures. by : Dr. Ashad ullah Qureshi

Download or read book Experimental Studies of Different RCC Structures. written by Dr. Ashad ullah Qureshi and published by Concepts Books Publication. This book was released on 2022-06-01 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthquakes are natural hazards under which disasters are mainly caused by damage to structures or collapse of buildings and other man-made structures. Shaking and ground rupture are the main effects created by earthquakes, principally resulting in more or less severe damage to buildings and other rigid structures. As the earth vibrates, all buildings on the ground surface will respond to that vibration in varying degrees. The horizontal ground motion action is similar to the effect of a horizontal force action on the building.

EXPERIMENTAL INVESTIGATION ON THE OUT-OF-PLANE BEHAVIOUR OF CONCRETE MASONRY INFILLED FRAMES.

Author : Chongyang Wang
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)

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Book Synopsis EXPERIMENTAL INVESTIGATION ON THE OUT-OF-PLANE BEHAVIOUR OF CONCRETE MASONRY INFILLED FRAMES. by : Chongyang Wang

Download or read book EXPERIMENTAL INVESTIGATION ON THE OUT-OF-PLANE BEHAVIOUR OF CONCRETE MASONRY INFILLED FRAMES. written by Chongyang Wang and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents an integral part of an on-going research on out-of-plane behaviour of masonry infills, this study was motivated to augment the existing experimental database on out-of-plane behaviour and strength of masonry infills by expanding on the variations on the parameters, and to assess the efficacy of existing analytical methods for infill out-of-plane strength calculation. A total of five scaled masonry infilled frame specimens including four masonry infilled RC frames and one masonry infilled steel frame were tested to failure under uniformly distributed out-of-plane loading. Parameters considered for the RC frame specimens included infill opening (door opening), prior in-plane damage, and gaps at either frame-to-beam or frame-to-column interfaces. Experimental results showed that all studied parameters have a significant effect on the out-of-plane behaviour and strength of infills.

IN-PLANE BEHAVIOUR OF MASONRY INFILLED RC FRAMES WITH INTERFACIAL GAPS SUBJECTED TO QUASI-STATIC LOADING.

Author : Ryan Steeves
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)

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Book Synopsis IN-PLANE BEHAVIOUR OF MASONRY INFILLED RC FRAMES WITH INTERFACIAL GAPS SUBJECTED TO QUASI-STATIC LOADING. by : Ryan Steeves

Download or read book IN-PLANE BEHAVIOUR OF MASONRY INFILLED RC FRAMES WITH INTERFACIAL GAPS SUBJECTED TO QUASI-STATIC LOADING. written by Ryan Steeves and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous research on masonry infilled frames has shown that the presence of infill-to-frame interfacial gaps and infill openings can affect the in-plane strength and stiffness of the infilled frame system. However, most of these studies used infilled steel frames, and subjected to monotonic loading. The parameters in terms of gap magnitude and location were also limited. For design, the American Standard, MSJC 2013, allows for infilled frames with a gap of less than 9.5 mm located at the frame top beam and infill interface to be considered as participating infills in lateral load resistance, but in this case, a 0.5 reduction factor shall be applied to the design strength and stiffness of the infill. The Canadian standard, CSA S304-14, requires that no gaps be present at the infill to bounding frame interface for the infill to be considered participating in lateral load resistance. This study was motivated to further investigate the effects of interfacial gaps and infill openings on the in-plane behaviour of masonry infilled frames. To augment the existing database, this study focused on reinforced concrete (RC) frames and adopted cyclic loading scheme. Four scaled masonry infilled RC frame specimens, as well as one bare RC frame specimen, were subject to quasi-static cyclic loading to failure. The four infilled frame specimens had the following interfacial gap scenarios: 1) a gap at the top beam-infill interface of 12 and 25 mm, respectively; 2) a gap at the column-infill interfaces of 12 mm (6 mm gap on each side); and 3) a full separation gap of 12 mm with 12 mm gap at the beam-infill and 12 mm at column-infill interfaces (6 mm gap on each side). Of the infilled specimens, two specimens also had a window opening accounting for 16% of the infill area. Quasi-static loading followed the ATC-24 loading protocol in order to measure cyclic response. Results from a previous study (Hu 2015) completed in the same experimental program were used for comparison purpose. Experimental results showed that compared to the bare frame specimen, a noticeable increase in strength and stiffness was observed with presence of infill regardless of the presence of gaps or infill openings. When compared to a specimen with no gaps, a reduction in ultimate strength and stiffness was observed with the presences of gaps. As the beam-to-infill gap size increased, the reduction in ultimate strength also increased; however, the initial stiffness remained virtually the same when gap increased from 12 mm to 25 mm. The presence of openings resulted in significant reduction in ultimate strength and stiffness, however, when both openings and gaps are present, the strength and stiffness reductions as a result of gaps is not as significant. The cyclic loading scheme revealed dynamic characteristics of masonry infilled frames. It was found that masonry infilled frames had greater ductility than that recommended by NBCC 2015 for unreinforced masonry. The ductility of the infilled frame specimens is comparable to that of a RC bare frame. The 0.5 reduction proposed by MSJC 2013 proved to be overly conservative for both ultimate strength and stiffness of infilled frames with gaps.

EXPERIMENTAL INVESTIGATION ON THE OUT-OF-PLANE BEHAVIOUR OF CONCRETE MASONRY INFILLED RC FRAMES.

Author : Reza Sepasdar
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)

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Book Synopsis EXPERIMENTAL INVESTIGATION ON THE OUT-OF-PLANE BEHAVIOUR OF CONCRETE MASONRY INFILLED RC FRAMES. by : Reza Sepasdar

Download or read book EXPERIMENTAL INVESTIGATION ON THE OUT-OF-PLANE BEHAVIOUR OF CONCRETE MASONRY INFILLED RC FRAMES. written by Reza Sepasdar and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents results of an experimental study focusing on the out-of-plane behaviour and strength of concrete masonry infills bounded by reinforced concrete frames. A total of four specimens was tested with different parameters. One was considered as a control specimen; one was built with a window opening in the infill; and the other two had sustained damage caused by either prior in-plane or out-of-plane loading. Of two specimens with prior damage, one was first subjected to in-plane loading until occurrence of a major diagonal crack, and then tested under out-of-plane pressure to failure. The other was first subjected to out-of-plane pressure until occurrence of a major horizontal crack, and then tested under in-plane loading to failure. The specimen details, test setup, and procedure are described. The experimental results were presented and discussed. The effect of parameters as well as the effectiveness of existing analytical methods is examined.

Modern Trends in Research on Steel, Aluminium and Composite Structures

Author : Marian A. Giżejowski
Publisher : Routledge
ISBN 13 : 1000459527
Total Pages : 689 pages
Book Rating : 4.0/5 (4 download)

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Book Synopsis Modern Trends in Research on Steel, Aluminium and Composite Structures by : Marian A. Giżejowski

Download or read book Modern Trends in Research on Steel, Aluminium and Composite Structures written by Marian A. Giżejowski and published by Routledge. This book was released on 2021-06-09 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern Trends in Research on Steel, Aluminium and Composite Structures includes papers presented at the 14th International Conference on Metal Structures 2021 (ICMS 2021, Poznań, Poland, 16-18 June 2021). The 14th ICMS summarised a few years’ theoretical, numerical and experimental research on steel, aluminium and composite structures, and presented new concepts. This book contains six plenary lectures and all the individual papers presented during the Conference. Seven plenary lectures were presented at the Conference, including "Research developments on glass structures under extreme loads", Parhp3D – The parallel MPI/openMPI implementation of the 3D hp-adaptive FE code", "Design of beam-to-column steel-concrete composite joints: from Eurocodes and beyond", "Stainless steel structures – research, codification and practice", "Testing, modelling and design of bolted joints – effect of size, structural properties, integrity and robustness", "Design of hybrid beam-to-column joints between RHS tubular columns and I-section beams" and "Selected aspects of designing the cold-formed steel structures". The individual contributions delivered by authors covered a wide variety of topics: – Advanced analysis and direct methods of design, – Cold-formed elements and structures, – Composite structures, – Engineering structures, – Joints and connections, – Structural stability and integrity, – Structural steel, metallurgy, durability and behaviour in fire. Modern Trends in Research on Steel, Aluminium and Composite Structures is a useful reference source for academic researchers, graduate students as well as designers and fabricators.

Earthquake-resistant Design Of Masonry Buildings

Author : Miha Tomazevic
Publisher : World Scientific
ISBN 13 : 1783262524
Total Pages : 281 pages
Book Rating : 4.7/5 (832 download)

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Book Synopsis Earthquake-resistant Design Of Masonry Buildings by : Miha Tomazevic

Download or read book Earthquake-resistant Design Of Masonry Buildings written by Miha Tomazevic and published by World Scientific. This book was released on 1999-07-05 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last few decades, a considerable amount of experimental and analytical research on the seismic behaviour of masonry walls and buildings has been carried out. The investigations resulted in the development of methods for seismic analysis and design, as well as new technologies and construction systems. After many centuries of traditional use and decades of allowable stress design, clear concepts for limit state verification of masonry buildings under earthquake loading have recently been introduced in codes of practice.Although this book is not a review of the state-of-the-art of masonry structures in earthquake zones, an attempt has been made to balance the discussion on recent code requirements, state-of-the-art methods of earthquake-resistant design and the author's research work, in order to render the book useful for a broader application in design practice. An attempt has also been made to present, in a condensed but easy to understand way, all the information needed for earthquake-resistant design of masonry buildings constructed using traditional systems. The basic concepts of limit state verification are presented and equations for seismic resistance verification of masonry walls of all types of construction, (unreinforced, confined and reinforced) as well as masonry-infilled reinforced concrete frames, are addressed. A method for seismic resistance verification, compatible with recent code requirements, is also discussed. In all cases, experimental results are used to explain the proposed methods and equations.An important part of this book is dedicated to the discussion of the problems of repair, retrofit and rehabilitation of existing masonry buildings, including historical structures in urban centres. Methods of strengthening masonry walls as well as improving the structural integrity of existing buildings are described in detail. Wherever possible, experimental evidence regarding the effectiveness of the proposed strengthening methods is given.

NUMERICAL STUDY OF THE IN-PLANE BEHAVIOUR OF CONCRETE MASONRY INFILLS BOUNDED BY STEEL FRAMES.

Author : Chen, Xi
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)

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Book Synopsis NUMERICAL STUDY OF THE IN-PLANE BEHAVIOUR OF CONCRETE MASONRY INFILLS BOUNDED BY STEEL FRAMES. by : Chen, Xi

Download or read book NUMERICAL STUDY OF THE IN-PLANE BEHAVIOUR OF CONCRETE MASONRY INFILLS BOUNDED BY STEEL FRAMES. written by Chen, Xi and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A finite element study was conducted to investigate the in-plane behaviour and strength of masonry infills bounded by steel frames with the focus on the effect of several influential parameters. In this study, two finite element models were developed using commercial software ANSYS adopting the simplified micro-modelling approach. The main difference of two models resided in the modeling technique used for simulating the mortar effect. The first model adopted a user-defined linkage element for mortar effect simulation whereas this was modelled by cohesive zone interface contact pairs in the second model. Both models were validated against experimental results available in the literature. Following the validation, the models were used in a series of studies to investigate the effect of several parameters on the stiffness and strength of infilled steel frames. For the infill opening study, it was found that the presence of openings decreased the in-plane stiffness and strength of the infill, and the degree of this reduction was associated with the location of the opening. For the vertical loading study, it was found that when applied as a uniformly distributed load on the frame beam, the vertical load had an optimal load level and within this level, the vertical load was found to be beneficial to the lateral stiffness and strength of the infilled frame. When applied as point loads on columns, the vertical load was shown to reduce the lateral strength of the infilled frame. For the interfacial gap study, it was found that the top beam-infill gap was more detrimental to the stiffness and strength of infill than the side column-infill gaps. Gap(s) had less effect on infills bounded by weak frames than strong frames. In most cases, the reduction factor for the gap effect specified in the American masonry standard (MSJC 2013) produced conservative estimates for both the stiffness and strength. For the material and geometric property study, it was found that while grouting was beneficial to both the stiffness and strength of the infill, the loaded corner cells need to be grouted to achieve the maximum benefit. In terms of increasing stiffness and strength of the infills, the joint reinforcement showed a noticeable effect while the vertical reinforcement had almost negligible effect. Frame column stiffness had a greater effect on the behaviour of infilled system than the frame beam stiffness. However, the net strength of infill was less affected by either column or beam stiffness. Compared with the finite element results, the American masonry standard (MSJC 2013) generally underestimated the stiffness and strength of infills while the Canadian masonry standard (CSA S304-14) achieved a much better agreement. Simplified analytical equations to account for the effect of the size and location of window openings; the uniformly distributed vertical load; and the size and location of gaps have been proposed respectively based on the regression analysis on finite element results. The proposed methods were shown to provide good agreement with both experimental and finite element results.

Historical Earthquake-Resistant Timber Frames in the Mediterranean Area

Author : Nicola Ruggieri
Publisher : Springer
ISBN 13 : 3319161873
Total Pages : 175 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Historical Earthquake-Resistant Timber Frames in the Mediterranean Area by : Nicola Ruggieri

Download or read book Historical Earthquake-Resistant Timber Frames in the Mediterranean Area written by Nicola Ruggieri and published by Springer. This book was released on 2015-03-16 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a selection of the best papers from the HEaRT 2013 conference, held in Cosenza, Italy, which provided a valuable forum for engineers and architects, researchers and educators to exchange views and findings concerning the technological history, construction features and seismic behavior of historical timber-framed walls in the Mediterranean countries. The topics covered are wide ranging and include historical aspects and examples of the use of timber-framed construction systems in response to earthquakes, such as the gaiola system in Portugal and the Bourbon system in southern Italy; interpretation of the response of timber-framed walls to seismic actions based on calculations and experimental tests; assessment of the effectiveness of repair and strengthening techniques, e.g., using aramid fiber wires or sheets; and modelling analyses. In addition, on the basis of case studies, a methodology is presented that is applicable to diagnosis, strengthening and improvement of seismic performance and is compatible with modern theoretical principles and conservation criteria. It is hoped that, by contributing to the knowledge of this construction technique, the book will help to promote conservation of this important component of Europe’s architectural heritage.

Cyclic In-plane Lateral Load Testing of Masonry Infill Walls with Structural Fuse Elements

Author : Andrew L. Kauffman
Publisher :
ISBN 13 :
Total Pages : 415 pages
Book Rating : 4.:/5 (613 download)

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Book Synopsis Cyclic In-plane Lateral Load Testing of Masonry Infill Walls with Structural Fuse Elements by : Andrew L. Kauffman

Download or read book Cyclic In-plane Lateral Load Testing of Masonry Infill Walls with Structural Fuse Elements written by Andrew L. Kauffman and published by . This book was released on 2009 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masonry infill walls are a common building element found in many areas of the world. Masonry infill panels have beneficial thermal and acoustic insulating properties and are often used for interior partitions as well as exterior walls. The structural properties of masonry infill walls, however, are often overlooked. In common practice, infill walls are treated as architectural elements and their influence on the behavior of the structural frame is not considered during design. Ignoring the contribution of masonry infill walls to the stiffness and response of building structures can lead to uneconomical design as well as unexpected behavior and even catastrophic collapse. Masonry infill walls increase the stiffness of structural frames and help to limit building deflections under normal lateral loads such as wind and small seismic events. Not accounting for the stiffness of infill walls in the design of infilled frames, however, can result in damage to the infill material and non-ductile frame behavior during large seismic events. A new concept in the performance and design of masonry infill walls is the idea of a structural fuse system. This seismic isolation system allows for composite interaction between infill walls and the structural frame under normal lateral loads. Brittle failure of the infill walls or frame elements is prevented by the introduction of a fuse mechanism, which isolates the infill material from the frame under higher loads. The primary objectives of this research program were to study the behavior of the structural fuse system under cyclic loads and to evaluate the performance of the system for use with various masonry materials. Additional objectives were to evaluate the performance of lumber disk fuse elements as a viable option for use in a fuse mechanism seismic isolation system, and to determine the shear and compressive strengths of the masonry materials used in the parametric study. A new experimental program was developed and executed to accomplish these goals. Cyclic tests were performed by applying simultaneous, displacement controlled loads at the first, second, and third stories of a two-bay, three-story steel test frame with brick infill walls; using a quasi-static loading protocol to create a first mode response in the structural system. A parametric study was also completed by replacing the brick walls with infill panels constructed of other masonry materials including concrete masonry units (CMU) and autoclaved aerated concrete (AAC) blocks, and applying monotonically increasing, displacement controlled loads to the test frame. During these tests, in-plane damage was not observed in the brick, CMU, or AAC infill walls. The results of this study showed that the lumber disk structural fuse elements worked well as seismic isolation devices. Based on the provisions of the Masonry Standards Joint Committee, MSJC (2008), equations were developed for determining the nominal in-plane strength of infill walls constructed of various masonry materials. The in-plane wall capacities predicted by these equations were compared to the results of destructive wall panel shear tests that were performed as part of this testing program. A simplified macro model was developed using SAP2000, and compared to the results of the monotonic tests. This approach was evaluated for use in the design office. It was determined that a more rigorous analytical technique is required to successfully capture the in-plane behavior of the structural fuse system.

Handbook of Research on Seismic Assessment and Rehabilitation of Historic Structures

Author : Asteris, Panagiotis G.
Publisher : IGI Global
ISBN 13 : 1466682876
Total Pages : 867 pages
Book Rating : 4.4/5 (666 download)

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Book Synopsis Handbook of Research on Seismic Assessment and Rehabilitation of Historic Structures by : Asteris, Panagiotis G.

Download or read book Handbook of Research on Seismic Assessment and Rehabilitation of Historic Structures written by Asteris, Panagiotis G. and published by IGI Global. This book was released on 2015-07-13 with total page 867 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rehabilitation of heritage monuments provides sustainable development and cultural significance to a region. The most sensitive aspect of the refurbishment of existing buildings lies in the renovation and recovery of structural integrity and public safety. The Handbook of Research on Seismic Assessment and Rehabilitation of Historic Structures evaluates developing contributions in the field of earthquake engineering with regards to the analysis and treatment of structural damage inflicted by seismic activity. This book is a vital reference source for professionals, researchers, students, and engineers active in the field of earthquake engineering who are interested in the emergent developments and research available in the preservation and rehabilitation of heritage buildings following seismic activity.

Behavior of Unbounded Post- tensioned Masonry Walls

Author : Reza Hassanli
Publisher : Springer
ISBN 13 : 331993788X
Total Pages : 277 pages
Book Rating : 4.3/5 (199 download)

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Book Synopsis Behavior of Unbounded Post- tensioned Masonry Walls by : Reza Hassanli

Download or read book Behavior of Unbounded Post- tensioned Masonry Walls written by Reza Hassanli and published by Springer. This book was released on 2018-08-07 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on a comprehensive analytical, experimental and numerical study on the flexural response of post-tensioned masonry walls under in-plane loads. It explores an important mechanism in this new generation of structural walls, called “Self-centering”. This mechanism can reduce residual drifts and structural damage during earthquake ground motion, and is particularly favorable for structures which are designed for immediate occupancy performance levels. The book reports on the development and verification of a finite element model of post-tensioned masonry walls. It describes a detailed parametric study to predict the strength of post-tensioned masonry walls. New design methodologies and expressions are developed to predict the flexural strength and force-displacement response of post-tensioned masonry. Experimental study is carried out to better understand the behavior of post-tensioned masonry walls and also to evaluate the accuracy of the proposed design procedure and expressions. The book also includes an introduction to current research on unbounded post-tensioned masonry walls, together with an extensive analysis of previously published test results.