Download or read book The Shear and Flexural Resistance of Unreinforced Masonry Walls Subjected to Seismic Loads written by Bojan Jarec and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Seismic Evaluation of Existing Stone Unreinforced Masonry Walls Using Predictive Parameters for Strengthening Interventions written by Hassan Ayoubi and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The seismic evaluation of existing unreinforced masonry (URM) structures is deemed essential due to their historical value and the vulnerability they present when subjected to earthquake shaking. Most of these buildings, constructed in the last century, do not comply with the current seismic codes and masonry standard. This study focusses on the assessment of URM walls subjected to lateral loading and more in detail to the behaviour of structural components such as the piers and spandrels. The behavior of structural elements, comprising the shear and bending failure modes, are investigated; these failure modes can be detected through the crack propagation initiated in building's masonry walls. Then, a parametric study on a series of capacity formulations of piers and spandrels is performed and each failure mode is investigated independently in the aim of assessing the accuracy in capturing their strength. Three experimental test data are used to validate the efficiency of formulations for diagonal shear and data from five testing programs are used to validate the proposed formulations used to predict the maximum shear force resulting from flexural behavior of piers. Subsequently, a deterministic model for piers is built using an open-source software to generate data required to build a linear relationship between different parameters and the performance criteria expressed in terms of strength and ductility. A case study comprising an URM facade wall of an existing 2-storey school building in Montreal is also conducted and certain strengthening interventions are presented. Further, the generated data is used to build probabilistic models that operates on Bayesian Networks. Nonlinear analysis using the target and the predictive variables are carried out. Machine learning algorithms are applied to acquire the entropy reduction factors which helps determining the most predictive variables used to assess the performance of piers.
Download or read book Earthquake Resistant Masonry Construction written by Robert A. Crist and published by . This book was released on 1977 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Strengthening of Unreinforced Masonry Buildings with Steel Elements written by Durgesh Chandra Rai and published by . This book was released on 1996 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Retrofit of Low rise Masonry and Concrete Walls by Steel Strips written by Mustafa Taghdi and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Protective Structures Research written by Hong Hao and published by CRC Press. This book was released on 2012-08-17 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Association of Protective Structures (IAPS) was launched on 1 October 2010 in Manchester, UK during the first International Conference of Protective Structures. The primary purpose of IAPS is to bring researchers and engineers working in the area of protective structures together, and to promote research and development work for b
Download or read book Masonry Structures written by Robert G. Drysdale and published by . This book was released on 1999 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of Reinforced Concrete Buildings for Seismic Performance written by Mark Aschheim and published by CRC Press. This book was released on 2019-04-05 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: The costs of inadequate earthquake engineering are huge, especially for reinforced concrete buildings. This book presents the principles of earthquake-resistant structural engineering, and uses the latest tools and techniques to give practical design guidance to address single or multiple seismic performance levels. It presents an elegant, simple and theoretically coherent design framework. Required strength is determined on the basis of an estimated yield displacement and desired limits of system ductility and drift demands. A simple deterministic approach is presented along with its elaboration into a probabilistic treatment that allows for design to limit annual probabilities of failure. The design method allows the seismic force resisting system to be designed on the basis of elastic analysis results, while nonlinear analysis is used for performance verification. Detailing requirements of ACI 318 and Eurocode 8 are presented. Students will benefit from the coverage of seismology, structural dynamics, reinforced concrete, and capacity design approaches, which allows the book to be used as a foundation text in earthquake engineering.
Download or read book Evaluation of Limit Design for Earthquake Resistant Masonry Walls written by Bradley Frederick and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A Limit Design methodology is presented and evaluated for the design of reinforced masonry walls subjected to in-plane seismic forces. The method was recently incorporated into the Building Code Requirements for Masonry Structures (TMS 402, 2013) as an alternative design option. Using the framework of conventional design methods, Limit Design applies concepts of displacement-based design to the controlling yield mechanism of a given wall configuration subjected to lateral seismic loading.Two design examples illustrate the application of Limit Design. The examples represent typical instances of building structures where the seismic force-resisting system consists of Special Reinforced Masonry Shear Walls as permitted in Minimum Design Loads for Buildings and Other Structures (ASCE/SEI 7, 2010). The selected examples involve configurations in which design decisions are not favorably addressed by the conventional design methods in TMS 402.The structures are analyzed and designed according to the Strength Design provisions of the TMS 402 (2013) code and the new Limit Design alternative. The design outcomes for both methods are compared and analyzed to illustrate the limitations of the Strength Design method and advantages of Limit Design.
Download or read book Seismic Assessment of Out of Plane Loaded Unreinforced Masonry Walls written by Hossein Derakhshan and published by . This book was released on 2011 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Assessment of Perforated Unreinforced Masonry Walls Responding In plane written by Charlotte Louise Knox and published by . This book was released on 2012 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research presented in this thesis describes the seismic assessment of perforated unreinforced masonry (URM) walls subjected to in-plane loading through accurate analysis of the wall lateral capacity and seismic demand. Current assessment methods for determining the capacity of perforated URM walls loaded in-plane, as outlined in the New Zealand guideline document (NZSEE 2006), are based on the assumption of infinitely rigid spandrel elements. From observations of damage after the 2010/2011 Canterbury earthquake sequence, this assumption has been proven to be invalid for certain perforated wall geometries. The research reported in this thesis was conducted with the primary aim of developing a practitioner focused assessment tool that accurately captured the global and local response of a perforated URM wall, with an emphasis placed on defining the influence of the spandrel geometry on the system level response of perforated URM walls responding in-plane. Pseudo-static cyclic testing of six full-scale pier-spandrel substructures and a two storey half-scale isolated perforated URM wall was conducted to investigate the variables which control spandrel failure mode and the influence of spandrel failure on the lateral capacity of multi-storey URM walls. Testing showed that the behaviour of the spandrel has a significant effect on the failure mode of the piers and hence the strength, stiffness and energy dissipation capacity of the system. A non-linear Equivalent Frame modelling method for perforated URM walls using the structural analysis software SAP2000 was appropriately validated using modelling results and experimental data. Spandrel behaviour was included within the modelling through the use of a moment-axial failure domain and a shear-axial relationship. Finally, a modified linear elastic procedure for assessing the demand on the in_ plane loaded walls of URM buildings with flexible diaphragms was developed and validated through the use of non-linear time history modelling.
Download or read book Seismic Design Methodologies for the Next Generation of Codes written by P. Fajfar and published by Routledge. This book was released on 2019-09-10 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings, arising from an international workshop, present research results and ideas on issues of importance to seismic risk reduction and the development of future seismic codes.
Download or read book Masonry Construction in Active Seismic Regions written by Rajesh Rupakhety and published by Woodhead Publishing. This book was released on 2021-05-12 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Computational Strategies for Masonry Structures written by Paulo José Brandão Barbosa Lourenço and published by . This book was released on 1996 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Guidelines for earthquake resistant non engineered construction written by Arya, Anand S and published by UNESCO. This book was released on 2014-08-25 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt:
