Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Seismic Retrofit And Repair Of Existing Reinforced Concrete Bridge Columns By Transverse Prestressing
Download Seismic Retrofit And Repair Of Existing Reinforced Concrete Bridge Columns By Transverse Prestressing full books in PDF, epub, and Kindle. Read online Seismic Retrofit And Repair Of Existing Reinforced Concrete Bridge Columns By Transverse Prestressing ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Seismic Retrofit and Repair of Existing Reinforced Concrete Bridge Columns by Transverse Prestressing by : Majid Sadoughi Yarandi
Download or read book Seismic Retrofit and Repair of Existing Reinforced Concrete Bridge Columns by Transverse Prestressing written by Majid Sadoughi Yarandi and published by . This book was released on 2007 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Retrofit of Concrete Columns by Transverse Prestressing by : Amirreza Sabri
Download or read book Seismic Retrofit of Concrete Columns by Transverse Prestressing written by Amirreza Sabri and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Performance of buildings and bridges during past earthquakes has indicated that many of these structures are vulnerable to seismic damage and structural collapse. The deficiencies in pre-1970s design codes have resulted in poor performance of reinforced concrete structures during seismic excitations. The Richter Magnitude 6.6 - 1971 San Fernando Earthquake raised awareness for seismic retrofit needs of existing buildings for the first time. The majority of deficiencies of vulnerable concrete columns can be overcome through seismic retrofits that involve additional transverse reinforcement. This can be done either by providing reinforced concrete, steel, or fibre-reinforced polymer (FRP) jackets around existing columns; or by applying transverse prestressing to columns (RetroBelt System). The research project presented in this thesis involves a seismic retrofit methodology for seismically deficient building and bridge columns, utilizing the use of high-strength packaging straps as external reinforcement for transverse prestressing. The emphasis in the project is placed on experimental research. Three seismically deficient full-size reinforced concrete columns, with a circular, a square and a rectangular cross- section, either critical in shear or flexure, were designed, built and tested under simulated seismic loading. The results indicate that external prestressing of columns in transverse direction with high-strength steel straps improves ductility and energy dissipation capacity of seismically deficient columns. They further indicate that current analytical techniques can be used to predict the force-displacement relationships of columns. A design approach is presented for the retrofit methodology investigated.
Book Synopsis Seismic Evaluation and Retrofit of Existing Reinforced Concrete Bridge Columns by :
Download or read book Seismic Evaluation and Retrofit of Existing Reinforced Concrete Bridge Columns written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design Guidelines for Assessment Retrofit and Repair of Bridges for Seismic Performance by : M. J. N Priestley
Download or read book Design Guidelines for Assessment Retrofit and Repair of Bridges for Seismic Performance written by M. J. N Priestley and published by . This book was released on 1992 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Retrofitting of Concrete Bridge Columns by External Prestressing by : Derek Mes
Download or read book Seismic Retrofitting of Concrete Bridge Columns by External Prestressing written by Derek Mes and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to recent earthquakes and the ensuing damage, there has been some concern regarding the adequacy of older structures. In particular, there is apprehension as to the adequacy of bridges that were erected prior to the early 1970's. Before this time there was little or no design process which considered seismic behaviour of bridges. Recent codes have been adjusted to compensate for these earlier problems. However, it is not feasible to remove and rebuild all of the previously built bridges. Hence, the only remaining viable approach to improving seismic adequacy of existing bridges is seismic upgrading or retrofitting these structures to improve their strength and/or deformability. The research program presented in this thesis addresses the problem of reinforced concrete bridge column retrofitting. More specifically, the applicability of a new retrofitting technique, developed at the University of Ottawa for columns of different aspect ratios and reinforcement arrangements, will be verified in terms of concrete confinement and shear resistance. The retrofitting technique consists of wrapping and prestressing high strength steel 7-wire strands around the test columns in order to increase their ductility. The specimen's tested were based on pre-1971 design, and hence had larger transverse reinforcement spacing than the present practice. This results in a lack of concrete confinement which translates into columns with poor shear resistance which tend to have a brittle failure mode. By retrofitting with prestressing strands, placed at closer spacing than the original hoops, the concrete confinement is increased, diagonal tension resistance is improved and a more ductile response is attained. Experiments from the first phase of this research program, performed by Yalcin (1997), gave very favourable results for a given aspect ratio and reinforcement arrangement. The present experimental research, forming the second phase, examined columns with different aspect ratios and reinforcement arrangements and also gave favourable results.
Book Synopsis Seismic Retrofit of Existing Reinforced Concrete Buildings by : Stelios Antoniou
Download or read book Seismic Retrofit of Existing Reinforced Concrete Buildings written by Stelios Antoniou and published by John Wiley & Sons. This book was released on 2023-01-31 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismic Retrofit of Existing Reinforced Concrete Buildings Understand the complexities and challenges of retrofitting building infrastructure Across the world, buildings are gradually becoming structurally unsound. Many were constructed before seismic load capacity was a mandatory component of building standards, and were often built with low-quality materials or using unsafe construction practices. Many more are simply aging, with materials degrading, and steel corroding. As a result, efforts are ongoing to retrofit existing structures, and to develop new techniques for assessing and enhancing seismic load capacity in order to create a safer building infrastructure worldwide. Seismic Retrofit of Existing Reinforced Concrete Buildings provides a thorough book-length discussion of these techniques and their applications. Balancing theory and practice, the book provides engineers with a broad base of knowledge from which to approach real-world seismic assessments and retrofitting projects. It incorporates knowledge and experience frequently omitted from the building design process for a fuller account of this critical engineering subfield. Seismic Retrofit of Existing Reinforced Concrete Buildings readers will also find: Detailed treatment of each available strengthening technique, complete with advantages and disadvantages In-depth guidelines to select a specific technique for a given building type and/or engineering scenario Step-by-step guidance through the assessment/retrofitting process Seismic Retrofit of Existing Reinforced Concrete Buildings is an ideal reference for civil and structural engineering professionals and advanced students, particularly those working in seismically active areas.
Book Synopsis Seismic Retrofit and Repair of Reinforced Concrete Bridge Columns Using Shape Memory Alloy Spirals by :
Download or read book Seismic Retrofit and Repair of Reinforced Concrete Bridge Columns Using Shape Memory Alloy Spirals written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Comparative Analysis of Seismic Retrofit Techniques for Reinforced Concrete Bridge Columns by : Jacques Sarrazin
Download or read book A Comparative Analysis of Seismic Retrofit Techniques for Reinforced Concrete Bridge Columns written by Jacques Sarrazin and published by . This book was released on 2004 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Andreas Lampropoulos Publisher :International Association for Bridge and Structural Engineering (IABSE) ISBN 13 :3857481730 Total Pages :210 pages Book Rating :4.8/5 (574 download)
Book Synopsis Case Studies on Conservation and Seismic Strengthening/Retrofitting of Existing Structures by : Andreas Lampropoulos
Download or read book Case Studies on Conservation and Seismic Strengthening/Retrofitting of Existing Structures written by Andreas Lampropoulos and published by International Association for Bridge and Structural Engineering (IABSE). This book was released on 2020-07-01 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent earthquakes have demonstrated that despite the continuous developments of novel materials and new strengthening techniques, the majority of the existing structures are still unprotected and at high seismic risk. The repair and strengthening framework is a complex process and there are often barriers in the preventative upgrade of the existing structures related to the cost of the applications and the limited expertise of the engineers. The engineers need to consider various options thoroughly and the selection of the appropriate strategy is a crucial parameter for the success of these applications. The main aim of this collection is to present a number of different approaches applied to a wide range of structures with different characteristics and demands acting as a practical guide for the main repair and strengthening approaches used worldwide. This document contains a collection of nine case studies from six different countries with different seismicity (i.e. Austria, Greece, Italy, Mexico, Nepal and New Zealand). Various types of structures have been selected with different structural peculiarities such as buildings used for different purposes (i.e. school buildings, town hall, 30 storey office tower), a bridge, and a wharf. Most of the examined structures are Reinforced Concrete structures while there is also an application on a Masonry building. For each of the examined studies, the local conditions are described followed by the main deficiencies which are addressed. The methods used for the assessment of the in-situ conditions also presented and alternative strategies for the repair and strengthening are considered.
Author :Konstantinos G. Megalooikonomou Publisher :Cambridge Scholars Publishing ISBN 13 :1527530361 Total Pages :387 pages Book Rating :4.5/5 (275 download)
Book Synopsis Seismic Assessment and Retrofit of Reinforced Concrete Columns by : Konstantinos G. Megalooikonomou
Download or read book Seismic Assessment and Retrofit of Reinforced Concrete Columns written by Konstantinos G. Megalooikonomou and published by Cambridge Scholars Publishing. This book was released on 2019-02-27 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reinforced concrete columns play a very important role in structural performance. As such, it is essential to apply a suitable analytical tool to estimate their structural behaviour considering all failure mechanisms such as axial, shear, and flexural failures. This book highlights the development of a fiber beam-column element accounting for shear effects and the effect of tension stiffening through reinforcement-to-concrete bond, along with the employment of suitable constitutive material laws.
Book Synopsis Seismic Retrofit of Concrete Columns with Splice Deficiencies by External Prestressing by : Pascal Beauséjour
Download or read book Seismic Retrofit of Concrete Columns with Splice Deficiencies by External Prestressing written by Pascal Beauséjour and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: According to the current design practice, reinforced concrete columns should have sufficient ductility to resist major earthquakes. The ductility allows a column to maintain its strength during inelastic response to earthquakes. The research project reported in this thesis involves the use of a new retrofit strategy developed for concrete columns at the University of Ottawa. The new procedure consists of external prestressing existing columns with seven wire strands. External prestressing overcomes diagonal tension caused by shear, confines compression concrete, and may improve the behaviour of spliced reinforcement under reversed cyclic loading. Six large scale bridge columns were built and tested under simulated seismic loading. Four long columns with a circular or a square cross-section of approximately 500 mm, and two short circular columns of 610 mm in diameter, were investigated. The columns all had lap spliced longitudinal reinforcement within the potential plastic hinge region. The splice length was equal to twenty times the bar diameter. The reinforcing details were typical of the pre-1970's design practice. The columns were subjected to a constant axial load of 15% of their concentric capacity. (Abstract shortened by UMI.).
Book Synopsis Flexural Retrofit of Circular Reinforced Concrete Bridge Columns by Steel Jacketing by : Yuk Hon Chai
Download or read book Flexural Retrofit of Circular Reinforced Concrete Bridge Columns by Steel Jacketing written by Yuk Hon Chai and published by . This book was released on 1991 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic retrofit and design recommendations for reinforced concrete bridge columns (PHD). by : Limin Jin
Download or read book Seismic retrofit and design recommendations for reinforced concrete bridge columns (PHD). written by Limin Jin and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Evaluation and Retrofit of Existing Reinforced Concrete Bridge Columns by : Cem Yalçin
Download or read book Seismic Evaluation and Retrofit of Existing Reinforced Concrete Bridge Columns written by Cem Yalçin and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Shear Strength of Reinforced Concrete Columns by : M. J. N. Priestley
Download or read book Seismic Shear Strength of Reinforced Concrete Columns written by M. J. N. Priestley and published by . This book was released on 1993 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computer Aided Seismic and Fire Retrofitting Analysis of Existing High Rise Reinforced Concrete Buildings by : Raja Rizwan Hussain
Download or read book Computer Aided Seismic and Fire Retrofitting Analysis of Existing High Rise Reinforced Concrete Buildings written by Raja Rizwan Hussain and published by Springer. This book was released on 2015-08-13 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book details the analysis and design of high rise buildings for gravity and seismic analysis. It provides the knowledge structural engineers need to retrofit existing structures in order to meet safety requirements and better prevent potential damage from such disasters as earthquakes and fires. Coverage includes actual case studies of existing buildings, reviews of current knowledge for damages and their mitigation, protective design technologies, and analytical and computational techniques. This monograph also provides an experimental investigation on the properties of fiber reinforced concrete that consists of natural fibres like coconut coir and also steel fibres that are used for comparison in both Normal Strength Concrete (NSC) and High Strength Concrete (HSC). In addition, the authors examine the use of various repair techniques for damaged high rise buildings. The book will help upcoming structural design engineers learn the computer aided analysis and design of real existing high rise buildings by using ACI code for application of the gravity loads, UBC- 97 for seismic analysis and retrofitting analysis by computer models. It will be of immense use to the student community, academicians, consultants and practicing professional engineers and scientists involved in the planning, design, execution, inspection and supervision for the proper retrofitting of buildings.
Book Synopsis Seismic Retrofitting of Rectangular Reinforced Concrete Bridge Columns for Shear by : Laura Lynn Bernards
Download or read book Seismic Retrofitting of Rectangular Reinforced Concrete Bridge Columns for Shear written by Laura Lynn Bernards and published by . This book was released on 1991 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
