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The Design Of Coupled Frame Wall Structures For Seismic Actions
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Book Synopsis The Design of Coupled Frame-wall Structures for Seismic Actions by : W. J. Goodsir
Download or read book The Design of Coupled Frame-wall Structures for Seismic Actions written by W. J. Goodsir and published by . This book was released on 1985 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Design of Coupled Frame-wall Structures for Seismic Actions by : W. J. Goodsir
Download or read book The Design of Coupled Frame-wall Structures for Seismic Actions written by W. J. Goodsir and published by . This book was released on 1985 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Design of Coupled Frame-wall Structures for Seismic Actions by : William John Goodsir
Download or read book The Design of Coupled Frame-wall Structures for Seismic Actions written by William John Goodsir and published by . This book was released on 1985 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental and Analytical Studies of Coupled Wall Structures by : Akin Ozselcuk
Download or read book Experimental and Analytical Studies of Coupled Wall Structures written by Akin Ozselcuk and published by . This book was released on 1989 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prediction of the Seismic Responses of R/C Frame-coupled Wall Structures by : A. E. Aktan
Download or read book Prediction of the Seismic Responses of R/C Frame-coupled Wall Structures written by A. E. Aktan and published by . This book was released on 1982 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Design of Frame-wall Structures by : Timothy J. Sullivan
Download or read book Seismic Design of Frame-wall Structures written by Timothy J. Sullivan and published by . This book was released on 2006 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Performance of Reinforced Concrete Coupled Walls by : Richard Clive Malcolm
Download or read book Seismic Performance of Reinforced Concrete Coupled Walls written by Richard Clive Malcolm and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Following the 2010/2011 Canterbury Earthquakes, an investigation by the Canterbury Earthquakes Royal Commission (CERC) considered the performance of a range of buildings in Christchurch. Several of the buildings investigated by the CERC included reinforced concrete coupled walls, which are comprised of two wall piers linked (or coupled) by a series of coupling beams at each floor level. Notably the coupled wall buildings investigated by the CERC were observed to have performed undesirably when compared to their design intent. It was found by the CERC that these coupled walls tended to display higher strengths and lower ductility capacity than was intended in design. The postulated reason for this behaviour was that interaction between structural components strengthened the coupling beams by restraining the tendency of the coupling beams to axially elongate. To better account for this interaction in design practice, it was recommended by the CERC that the behaviour of coupled walls be investigated further. In this study, structural interaction between coupling beams and floors was first considered using finite element software VecTor2. It was found that the floors tended to restrain the elongation of coupling beams and to cause large coupling beam strength increases. The extent of floor that was activated to restrain coupling beam elongation being found to be dependent upon the arrangement of the floor. Existing provisions of NZS 3101:2006 for upper bounds on floor effective widths were found to be valid for assessment of the maximum coupling beam strength amplification caused by floor interaction. Analysis of a series of seismically loaded coupled walls interacting with floors was undertaken using VecTor2 software. In agreement with the findings of the CERC, axial restraint of coupling beams was found to have a large impact on coupled wall performance. Coupling beam strengths were measured up to 300% of their design strength, which tended to change the strength hierarchy of the coupled wall. In particular it was found that many existing coupled walls would have behaved similarly to a single cantilever wall with penetrations because the coupling beams were too strong to yield. These coupled walls tended to display lower energy dissipation and higher wall pier damage than assumed in design. The coupled wall provisions proposed (at the time of writing) in the 2014/2015 NZS 3101:2006 Amendment were found to over-estimate the impact of the floor systems on restraining coupling beam elongation. However these provisions did not include the effect of the wall piers restraining coupling beam elongation, so overall coupled wall overstrength capacities tended to be under-predicted. As an approximate method of accounting for axial restraint in design of coupled walls, it was recommended that redistribution of design demands be used to reduce the coupling beam design capacity and to achieve a more desirable coupled wall behaviour.
Author :United States. Department of Defense. Tri-Service Seismic Design Committee Publisher : ISBN 13 : Total Pages :472 pages Book Rating :4.3/5 (91 download)
Book Synopsis Seismic Design for Buildings by : United States. Department of Defense. Tri-Service Seismic Design Committee
Download or read book Seismic Design for Buildings written by United States. Department of Defense. Tri-Service Seismic Design Committee and published by . This book was released on 1973 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis States of the Art and Practice in the Optimum Seismic Design and Analytical Response Prediction of R/C Frame-wall Structures by : A. E. Aktan
Download or read book States of the Art and Practice in the Optimum Seismic Design and Analytical Response Prediction of R/C Frame-wall Structures written by A. E. Aktan and published by . This book was released on 1982 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recommendations for Seismic Design of Hybrid Coupled Wall Systems by : Sherif El-Tawil
Download or read book Recommendations for Seismic Design of Hybrid Coupled Wall Systems written by Sherif El-Tawil and published by Amer Society of Civil Engineers. This book was released on 2010 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report synthesizes the existing information on hybrid coupled wall (HCW) systems into helpful recommendations pertaining to their seismic analysis and design.
Book Synopsis Seismic Resistance of Reinforced Concrete Shear Walls and Frame Joints by : Applied Technology Council
Download or read book Seismic Resistance of Reinforced Concrete Shear Walls and Frame Joints written by Applied Technology Council and published by . This book was released on 1983 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NUMERICAL MODELLING AND PARAMETRIC INVESTIGATION OF R/C COUPLED WALL-FRAME SYSTEMS UNDER SEISMIC LOADING (COUPLED WALL FRAME). by : MOHAMED SOHAIB ABDULHADI ALAMA
Download or read book NUMERICAL MODELLING AND PARAMETRIC INVESTIGATION OF R/C COUPLED WALL-FRAME SYSTEMS UNDER SEISMIC LOADING (COUPLED WALL FRAME). written by MOHAMED SOHAIB ABDULHADI ALAMA and published by . This book was released on 1991 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: dynamic base shear in order to check wall shear stresses under high seismic load conditions.
Book Synopsis Performance-Based Seismic Design of Concrete Structures and Infrastructures by : Plevris, Vagelis
Download or read book Performance-Based Seismic Design of Concrete Structures and Infrastructures written by Plevris, Vagelis and published by IGI Global. This book was released on 2017-02-14 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid design and craftsmanship are a necessity for structures and infrastructures that must stand up to natural disasters on a regular basis. Continuous research developments in the engineering field are imperative for sustaining buildings against the threat of earthquakes and other natural disasters. Performance-Based Seismic Design of Concrete Structures and Infrastructures is an informative reference source on all the latest trends and emerging data associated with structural design. Highlighting key topics such as seismic assessments, shear wall structures, and infrastructure resilience, this is an ideal resource for all academicians, students, professionals, and researchers that are seeking new knowledge on the best methods and techniques for designing solid structural designs.
Book Synopsis Influence of Coupling Beam Axial Restraint on Analysis and Design of Reinforced Concrete Coupled Walls by : Kamiar Kalbasi Anaraki
Download or read book Influence of Coupling Beam Axial Restraint on Analysis and Design of Reinforced Concrete Coupled Walls written by Kamiar Kalbasi Anaraki and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reinforced concrete coupled shear walls are effective systems for resisting lateral loads, often used in mid to high-rise buildings in earthquake-prone areas. These walls usually feature openings for doors and windows, dividing a solid wall into two separate piers. The strength of these walls comes not just from the sum of two individual piers, but from wall piers cross-section and the framing action between the wall piers through the coupling beams. In an earthquake, coupling beams serve as fuse elements, distributing seismic energy throughout the height of the building. This not only reduces the bending stress at the base of the shear walls but also improves their overall strength, stiffness, and resistance to lateral forces. Properly designed coupling beams, with sufficient longitudinal, diagonal, and confinement reinforcement, can effectively absorb energy while maintaining significant strength and stiffness, even under large deformations.The objective of this study was to develop, calibrate, and validate a new coupling beam model that integrates axial and lateral interactions under cyclic loading conditions. This model aims to reliably predict the elastic and inelastic responses of diagonally reinforced coupling beam elements. The proposed analytical model incorporates a fiber-based concrete cross-section, and diagonal trusses to account for axial interactions between the nonlinearity in the steel and concrete along the beam's length. This feature allows the model to capture additional axial force developed in the element due to the axial restraint from the wall piers, thereby increasing or decreasing the lateral strength of the beam. Additionally, the model includes the slip-extension behavior between the coupling beam and the supporting wall through zero-length fiber-based elements at both ends of the beam. Finally, with the development of the new analytical model and recent advancements in understanding the shear strength of RC shear walls, a new coupled/core wall design approach has been introduced to optimize the design of RC core walls. A variety of archetypes have been designed, based on both current design practices and the proposed approach. Detailed analytical models have been developed, and the efficiency of the proposed design has been evaluated through nonlinear static and dynamic analyses. To conduct the dynamic analysis, suites of ground motions were selected using the CMS approach and scaled to the MCER level of hazard. It has been demonstrated that the designed archetypes based on proposed procedure provide a more reliable shear responses under seismic loading compared to current design practices.
Book Synopsis Collapse Assessment of Reinforced Concrete Coupled Walls by : Negin Aryaee Tauberg
Download or read book Collapse Assessment of Reinforced Concrete Coupled Walls written by Negin Aryaee Tauberg and published by . This book was released on 2019 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT OF THE DISSERTATION Collapse Assessment of Reinforced Concrete Ductile Coupled Walls by Negin Aryaee Tauberg Doctor of Philosophy in Civil Engineering University of California, Los Angeles, 2019 Professor John Wright Wallace, Chair Reinforced concrete coupled shear walls are efficient lateral load resisting systems commonly constructed as part of core walls in mid to high-rise buildings. Coupled walls are constructed as a result of openings accommodating doorways and windows, thus separating a solid wall segment in two piers. Instead of summing the strength of two individual wall piers, the efficiency of the individual wall piers is improved by proper coupling of two adjacent walls linked by coupling beams. During earthquake shaking, coupling beams act as ductile fuses and dissipate seismic energy over the building height. This coupling action reduces the flexural demand at the base of the shear walls and results in increased strength, stiffness, and lateral load resistance. Coupling beams can dissipate energy well in the system and retain significant strength and stiffness through large displacement reversals when they are detailed to retain ductility with adequate longitudinal, diagonal, and confinement reinforcement. As part of this study, important parameters affecting the behavior of coupling beams and coupled wall systems are assessed. A thorough coupling beam database is compiled consisting of 104 individual beam specimen and 11 coupled wall system level tests. The database is used to derive trends for coupling beam effective stiffness and shear-deformation backbone relations. Based on a review of past experimental results, an expression is derived relating the coupling beam effective stiffness as a function of the beam aspect ratio, i.e., EcIeff/EcIg = 0.07ln/h, which represents the secant stiffness to yield and includes the stiffening impact of the slab and the post- tensioning stress. This expression has been adopted in the PEER TBI (2017) and LATBSDC (2017) guidelines. Experimental shear-deformation information from the database is also used to quantify plastic rotations at peak coupling beam shear strength and at strength loss. The subsequent part of this study focuses on proposing appropriate seismic response parameters for coupled wall systems. Current ASCE 7-16 and ACI 318-14 design provisions specify the same seismic response parameters to be used for coupled walls as are for special structural walls. However, well-designed coupled walls can have improved lateral performance and energy dissipation compared to uncoupled walls since part of the total overturning moment is resisted by coupling action and energy dissipation is distributed along the height of structure. In coordination with ASCE 7 and ACI 318, a new lateral system is introduced for Reinforced Concrete (RC) Ductile Coupled Walls as an assembly of walls with aspect ratio (hwcs/lw) greater than 2.0 which are linked by coupling beams having aspect ratios (ln/h) between 2.0 and 5.0. This study employs the FEMA P695 methodology to validate the proposed response modification factor of R = 8, deflection amplification factor of Cd = 8, and an overstrength factor of 0 = 2.5 for RC Ductile Coupled Walls. The collapse assessment studies include forty-one Archetypes designed using ASCE 7-16 and ACI 318-19 including new provisions that require wall shear amplification and a drift capacity check. The Archetypes vary in building height (6 to 30 stories), wall cross section (planar and flanged/core), coupling beam aspect ratio (ln/h = 2.0 to 5.0), and coupling beam reinforcement arrangement (conventionally reinforced and diagonally reinforced). Collapse of the Archetypes is evaluated using failure criteria models that account for flexural failure (concrete crushing, bar buckling, wall lateral instability, bar fracture), shear, and axial failures. In comparison to previous studies that have assumed failure to occur at a roof drift ratio of 5%, this study uses a conservative approach to define flexural failure as a 20% drop in lateral strength. Overall, nonlinear static pushover and incremental dynamic analysis results indicate that R = 8 and 0 = 2.5 are appropriate parameters for RC Ductile Coupled Wall systems that are designed per ASCE 7-16 and ACI 318-19 provisions.
Author :FIB – International Federation for Structural Concrete Publisher :FIB - Féd. Int. du Béton ISBN 13 : Total Pages :565 pages Book Rating :4./5 ( download)
Book Synopsis Proceedings fib Symposium in Prague Czech Republic Vol2 by : FIB – International Federation for Structural Concrete
Download or read book Proceedings fib Symposium in Prague Czech Republic Vol2 written by FIB – International Federation for Structural Concrete and published by FIB - Féd. Int. du Béton. This book was released on 2011-06-01 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Design of Buildings by : James E. Ambrose
Download or read book Seismic Design of Buildings written by James E. Ambrose and published by . This book was released on 1993 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: