Dynamic Response Of Urm Buildings With Flexible Diaphragms
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Dynamic Response Of Urm Buildings With Flexible Diaphragms
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Author : Andrew Christopher Costley
language : en
Publisher:
Release Date : 1995
Dynamic Response Of Urm Buildings With Flexible Diaphragms written by Andrew Christopher Costley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
As seismic awareness increases, especially in traditionally non-seismic regions, there is an ever-increasing need to evaluate the lateral resistance of existing structures. Unreinforced masonry (URM) structures are perceived to be seismically unsafe due to dramatic media coverage of these structures following earthquakes. However, well-built URM structures can possess substantial seismic resistance, although quantifying this strength can be difficult. Through a combination of experimental and analytical investigations, the overall objective of the study is to provide recommendations for the evaluation and rehabilitation of URM buildings. To accomplish this objective, the study was broken down into three primary tasks: (1) an experimental investigation, (2) the development of a simple dynamic model, and (3) a review of current analysis methods. The experimental investigation consisted primarily of the construction and dynamic testing of two, two-story, URM buildings with flexible floor and roof diaphragms on the University of Illinois shaking table. The two buildings were subjected to a total of nine simulated earthquakes. Experimental results indicated that (first-story) pier rocking was a ductile mode of response. Based on experimental results, a simple (3-DOF), nonlinear elastic model was developed. This model, in conjunction with a nonlinear time-step integration program, was used to estimate peak displacements during the rocking portions of the later earthquake simulations. The third task was a review of existing static and dynamic methods for analyzing URM structures. The static methods studied included two design codes, two rehabilitation codes, finite element modeling, and a pushover analysis. Dynamic methods included an elastic time-step integration, response spectra analysis, equivalent frame modeling, and finite element modeling. After a thorough examination of the measured results from the dynamic testing and a comparison between these results with those calculated during the analytical studies, a number of recommendations for the evaluation and rehabilitation of unreinforced masonry buildings with flexible diaphragms were made.
Dynamic Response Of Unreinforced Masonry Buildings With Flexible Diaphragms
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Author : A. C. Costley
language : en
Publisher:
Release Date : 1996
Dynamic Response Of Unreinforced Masonry Buildings With Flexible Diaphragms written by A. C. Costley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Building, Brick categories.
Dynamic Response Of Urm Building With Flexible Diaphragms
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Author : Andrew Christopher Costley
language : en
Publisher:
Release Date : 1995
Dynamic Response Of Urm Building With Flexible Diaphragms written by Andrew Christopher Costley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Dynamic Response Of Setback Buildings With A Flexible Floor Diaphragm
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Author : Rajiv Sharma
language : en
Publisher:
Release Date : 1987
Dynamic Response Of Setback Buildings With A Flexible Floor Diaphragm written by Rajiv Sharma and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Buildings categories.
Dynamic Response Of Crosswall Buildings With Flexible Floor Diaphragms
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Author : Kambiz Bayar
language : en
Publisher:
Release Date : 1987
Dynamic Response Of Crosswall Buildings With Flexible Floor Diaphragms written by Kambiz Bayar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Structural dynamics categories.
Seismic Response Of Low Rise Masonry Buildings With Flexible Roof Diaphragms
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Author : Gregory L. Cohen
language : en
Publisher:
Release Date : 2001
Seismic Response Of Low Rise Masonry Buildings With Flexible Roof Diaphragms written by Gregory L. Cohen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
This study compares the responses from shaking-table testing and analytical predictions evaluated in the context of geometric scaling, to provide a coherent description of the seismic response of low-rise masonry buildings with flexible roof diaphragms. Two half-scale, low-rise reinforced masonry buildings with flexible roof diaphragms are subjected to carefully selected earthquake ground motion on the Tri-axial Earthquake and Shock Simulator at the Construction Engineering Research Laboratory. Damage to the half-scale specimens is assessed using published protocols. Geometric scaling analysis relates response and damage of the half-scale specimens to those of the full-scale prototype structures. Linear elastic modeling is simplified to a generalized two-degrees-of-freedom idealization. Response-spectrum analysis of such an idealization is accurate and justified for prediction of dynamic response of the half-scale specimens and the corresponding full-scale prototype. It is shown that low-rise masonry buildings with flexible roof diaphragms can be designed for seismic loads as single-degree-of- freedom systems, using the degree of freedom associated with the in-plane response of the diaphragm in the building's transverse direction, rather than the degree of freedom associated with the in-plane responses of the shear walls.
Comprehensive Earthquake Preparedness Planning Guidelines
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Author : Southern California Earthquake Preparedness Project
language : en
Publisher:
Release Date : 1985
Comprehensive Earthquake Preparedness Planning Guidelines written by Southern California Earthquake Preparedness Project and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Business insurance categories.
Evaluation Of Earthquake Damaged Concrete And Masonry Wall Buildings
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Author :
language : en
Publisher:
Release Date : 1999
Evaluation Of Earthquake Damaged Concrete And Masonry Wall Buildings written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Buildings categories.
Seismic Response Of A Half Scale Masonry Building With Flexible Diaphragms
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Author : Steven C. Sweeney
language : en
Publisher:
Release Date : 2005
Seismic Response Of A Half Scale Masonry Building With Flexible Diaphragms written by Steven C. Sweeney and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Buildings categories.
Nehrp Commentary On The Gidelines For The Seismic Rehabilitation Of Buildings
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Author : Eugene Zeller
language : en
Publisher: DIANE Publishing
Release Date : 2000-06
Nehrp Commentary On The Gidelines For The Seismic Rehabilitation Of Buildings written by Eugene Zeller and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-06 with Technology & Engineering categories.
This document from the National Earthquake Hazards Reduction Program (NEHRP) was prepared for the Building Seismic Safety Council (BSSC) with funding from the Federal Emergency Management Agency (FEMA). It provides commentary on the NEHRP Guidelines for the Seismic Rehabilitation of Buildings. It contains systematic guidance enabling design professionals to formulate effective & reliable rehabilitation approaches that will limit the expected earthquake damage to a specified range for a specified level of ground shaking. This kind of guidance applicable to all types of existing buildings & in all parts of the country has never existed before. Illustrated.