Characterisation And Seismic Assessment Of Unreinforced Masonry Buildings
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Characterisation And Seismic Assessment Of Unreinforced Masonry Buildings
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Author : Alistair Peter Russell
language : en
Publisher:
Release Date : 2010
Characterisation And Seismic Assessment Of Unreinforced Masonry Buildings written by Alistair Peter Russell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Brick walls categories.
Masonry Construction In Active Seismic Regions
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Author : Rajesh Rupakhety
language : en
Publisher: Woodhead Publishing
Release Date : 2021-05-12
Masonry Construction In Active Seismic Regions written by Rajesh Rupakhety and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-12 with Architecture categories.
During earthquakes, masonry buildings are the most affected, and consequently, damage to these buildings leads to massive loss of life and property. Masonry buildings comprise probably the greatest share of overall housing stock, and in turn, understanding their performance during earthquakes is a pivotal problem in seismic regions. Masonry Construction in Active Seismic Regions presents details on the kinds of masonry building found in seismic regions of the world. The title describes interventions, such as retrofitted solutions, dynamic identification, and improved construction after earthquakes, that are equally applicable to regions of moderate and high seismicity. The book covers representative masonry buildings from active seismic regions, the material properties of masonry construction, numerical modelling techniques and computational advances, seismic performance of non-engineered masonry buildings, resilience in typical construction, retrofitting, and the cultural values and structural characterization of heritage masonry buildings in active seismic regions. This book is unique in its global and systematic coverage of masonry construction in seismic regions. Identifies the material properties of masonry construction from a seismic perspective Covers representative masonry buildings from active seismic regions, providing a benchmark to understand existing building stocks Provides numerical modelling techniques and reviews computational advances, including a large test database Details the seismic performance of non-engineered masonry buildings, as well as the cultural values and structural characterisation of heritage masonry constructions Analyses typical or vernacular constructions which have earthquake resilient features, such as Dhajji-Dewari, Borbone, Pombalino, and Himis
Earthquake Resistant Design Of Masonry Buildings
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Author : Miha Tomazevic
language : en
Publisher: World Scientific
Release Date : 1999-07-05
Earthquake Resistant Design Of Masonry Buildings written by Miha Tomazevic and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-07-05 with Technology & Engineering categories.
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.
Seismic Assessment Of Unreinforced Masonry Buildings In Canada
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Author : Gilbert Bélec
language : en
Publisher:
Release Date : 2016
Seismic Assessment Of Unreinforced Masonry Buildings In Canada written by Gilbert Bélec and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Section 10
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Author : Jitendra Bothara
language : en
Publisher:
Release Date : 2015
Section 10 written by Jitendra Bothara and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Damage Identification Of Unreinforced Masonry Structures Based On Vibration Response
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Author : Claudio Andrés Oyarzo Vera
language : en
Publisher:
Release Date : 2012
Damage Identification Of Unreinforced Masonry Structures Based On Vibration Response written by Claudio Andrés Oyarzo Vera and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Buildings categories.
This thesis presents the findings of an investigation on the dynamic characterization of unreinforced masonry (URM) buildings and the use of their distinctive modal properties in identifying damage. Numerical and physical models were used to analyse the applicability of system and damage identification techniques to non-slender URM buildings. Modal tests were conducted on two undamaged URM panels and an undamaged model of a one-storey URM house. Impacts with a calibrated hammer were used to excite the specimens during the modal test, and also horizontal harmonic excitations in the case of the house model. Two system identification techniques (SSI and FDD) were considered for extracting the modal properties. The experimental results were then compared with numerical predictions obtained from finite element models, originally generated based on geometrical and mechanical properties obtained by standardized tests. The numerical predictions were improved by applying sensitivity-based model updating techniques. The evolution of the modal properties of the URM panels and house model due to damage artificially induced were also investigated. Vibration-based and model updating-based damage identification techniques were employed to detect the damage distribution in the specimens. Finally, a seismic assessment was conducted on a typical New Zealand URM building by applying time-history analysis on finite element models. An original seismic hazard zonation and methodology for selecting appropriate ground-motion records in the North Island of New Zealand is described. A typical stand-alone two-storey URM building was simulated using different finite element models. Material and geometrical properties estimated from traditional standardized test results, and properties estimated by a process of model updating based on the experimental data recorded in the vibration tests were considered for these models. The finite element models were analysed using a time-history methodology for a building in Auckland and Wellington. The response of the building was compared with admissible limits established based on a stability criteria, taking into account three levels of intensity for the ground motion.
Seismic Assessment Of Out Of Plane Loaded Unreinforced Masonry Walls
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Author : Hossein Derakhshan
language : en
Publisher:
Release Date : 2011
Seismic Assessment Of Out Of Plane Loaded Unreinforced Masonry Walls written by Hossein Derakhshan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Buildings categories.
This thesis investigates the behaviour of URM walls subjected to out-of-plane seismic forces, and the study is focused primarily on single-storey and two-storey one-way spanning walls connected to flexible diaphragms. Expressions that describe the intermediate-height cracking of out-of-plane loaded one-way spanning URM walls were formulated, and wall force-displacement behaviour and the sensitivity to various parameters were studied. Crack height was identified to be particularly sensitive to low values of masonry bond strength and/or to low values of applied overburden. Crack height was found to have significant effects on both wall instability displacement and lateral resistance. A comprehensive quasi-static testing programme was developed by subjecting full-scale two-leaf and three-leaf URM walls to out-of-plane uniform forces. The objective of the tests was to develop an idealised predictive model for the out-of-plane behaviour of URM walls, by accounting the effects of different mortar mixes, multi-leaf construction and overburden loads. An in-field out-of-plane pushover testing programme was next completed, and some of the key questions about actual wall performance were answered. Wall support types and characteristics and their effect on wall behaviour were investigated by testing multiple walls having different support configurations, which included timber diaphragms, concrete ring beam, and grouted steel anchorage bars. The effect of plaster and wall finishings was investigated, and the conditions upon which the previously developed idealised predictive model had acceptable results were determined. A simplified reduced-degree-of-freedom numerical model was developed to study the dynamic behaviour of URM walls, with critical requirements of the model being an ability to account for the effects of flexible supports and an ability to predict the behaviour of two-storey walls. An existing assessment procedure for seismic assessment of out-of-plane loaded URM walls was reviewed in detail, an alternative methodology for wall assessment was introduced, and seismic assessment charts were presented for single-storey and two-storey walls.
Assessment And Improvement Of The Structural Performance Of Buildings In Earthquakes
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Author :
language : en
Publisher:
Release Date : 2015
Assessment And Improvement Of The Structural Performance Of Buildings In Earthquakes written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Buildings categories.
Seismic Damage To Masonry Buildings
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Author : Alberto Bernadini
language : en
Publisher: Routledge
Release Date : 2018-12-18
Seismic Damage To Masonry Buildings written by Alberto Bernadini and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-18 with Technology & Engineering categories.
Many traditional masonry buildings are exposed to high intensity earthquakes where the collapse of masonry claims the majority of casualties. This workshop provided a forum for discussion, including survey and measurement, retrofitting criteria and approaches used in different European countries.
Seismic Assessment Of Timber Floor Diaphragms In Unreinforced Masonry Buildings
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Author : Aaron W. Wilson
language : en
Publisher:
Release Date : 2012
Seismic Assessment Of Timber Floor Diaphragms In Unreinforced Masonry Buildings written by Aaron W. Wilson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Diaphragms (Structural engineering) categories.
An integrated experimental and analytical study investigating the in-plane performance of timber floor diaphragms in URM buildings is presented. The research presented in this thesis was conducted with the primary aim of developing a revised procedure for the detailed seismic assessment of timber floor diaphragms in URM buildings. The deformation mechanics of timber floor diaphragms are presented and were used to develop an analytical model that can be used to predict diaphragm nonlinear performance. The analytical model was used to update the current idealisation of diaphragm behaviour in current seismic assessment documents. A three-phase experimental testing program is presented. Nail connection testing results indicated that connections in diaphragms contained within existing URM buildings have substantially lower initial stiffness, strength, and displacement capacity than do new connections. Small-scale diaphragm testing results proved that friction resistance between straight-edge or tongue and groove floorboards is negligible. Full-scale diaphragm testing results confirmed the highly flexible and orthotropic behaviour of timber floor diaphragms, and that a small stairwell penetration or the presence of discontinuous joists having a reliable mechanical connection do not significantly influence diaphragm performance. A finite element (FE) modelling method for timber floor diaphragms using the structural analysis software SAP2000 was appropriately validated using analytical modelling results and experimental data. Salvaged nail connection load-slip test data was used to program a diaphragm FE model to establish the representative performance of diaphragms in ~100 year old URM buildings in New Zealand. A comprehensive parametric analysis of diaphragm behaviour was subsequently undertaken. Finally, a revised assessment procedure for timber floor diaphragms was developed, which incorporates representative performance parameters, and provides suitable provisions to account for diaphragm orthotropic behaviour and for variations in key diaphragm configuration characteristics.