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Seismic Assessment Of Unreinforced Masonry Buildings In Bostons Back Bay Neighborhood
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Book Synopsis Seismic Assessment of Unreinforced Masonry Buildings in Boston's Back Bay Neighborhood by : Emily Deen Spencer
Download or read book Seismic Assessment of Unreinforced Masonry Buildings in Boston's Back Bay Neighborhood written by Emily Deen Spencer and published by . This book was released on 2015 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a seismic evaluation of the unreinforced masonry buildings in Boston Massachusetts's historical Back Bay neighborhood. This Boston district, famous for its rows of Victorian brownstone residences is considered to be one of the best preserved examples of 19 'h century urban design. There are a few specific reasons to speculate at the vulnerability of this neighborhood to seismic events. First, in 1755, one hundred years before the Back Bay started to be built, the most massive earthquake of New England's history occurred, damaging unreinforced masonry structures in Boston. Approximately eighty percent of the Back Bay neighborhood is now made up of unreinforced masonry structures. Second, seismic design was not required in Boston until 1975, which means a staggering majority of the buildings in the Back Bay were constructed without any kind of anti-seismic lateral system. The aim of this thesis is to assess the structural response of the unreinforced masonry homes of the Back Bay to seismic activity due to these issues. A case study of an unreinforced masonry building in the neighborhood is assessed through structural analysis of its facade and party walls. The performance of this building is extrapolated to represent the state of the unreinforced masonry buildings of the Back Bay.
Book Synopsis Boston's Back Bay by : William A. Newman
Download or read book Boston's Back Bay written by William A. Newman and published by UPNE. This book was released on 2006 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: A fascinating look at the people, politics, and technology behind the massive landfill project that filled Boston's Back Bay
Book Synopsis Seismic Assessment of Unreinforced Masonry Structures by : Nathan Daniel Boutin
Download or read book Seismic Assessment of Unreinforced Masonry Structures written by Nathan Daniel Boutin and published by . This book was released on 2009 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrastructure in the United States is comprised of numerous structures that are decades old. The Longfellow Bridge is one of the oldest pieces of this infrastructure that is still in use and has become one of the most historic structures of the Boston area. Currently, the steel superstructure of the bridge is in poor condition while the masonry piers and abutments remain in good condition. In the near future, a major replacement of the superstructure will be required. In order for the masonry elements to be approved for a renewed design life, they must be assessed for their ability to withstand seismic loads. This assessment presents an investigation of original construction documents and identifies critical components of the bridge that require more in depth analysis. It also shows a qualitative review of expected seismic activity for the region surrounding Boston. A review of current theory related to unreinforced masonry structures is introduced and analysis is then performed on critical wall sections. Specific ground motions are applied using both constant acceleration and impulse loadings to the structure. The results of the analyses reveal a need for further investigation into retrofitting schemes as there is not a sufficient factor of safety that exists with certain pier elements. Furthermore, a failure envelope is developed and presented for several types of impulse loads in order to serve as a basis for understanding the behavioral response to potential earthquake loading.
Book Synopsis Seismic Analysis of Multi-Story Unreinforced Masonry Buildings with Flexible Diaphragms by : Juan Aleman Hernandez
Download or read book Seismic Analysis of Multi-Story Unreinforced Masonry Buildings with Flexible Diaphragms written by Juan Aleman Hernandez and published by . This book was released on 2014 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies regarding the regional seismicity of New York City (NYC) indicate that earthquakes of magnitude greater than or equal to 5 have a 20-40% probability of occurring in a 50 year period. Considering that more than 50% of the large population of the region (19.1 million) is living in an area where 80% of the buildings are of old Unreinforced Masonry (URM) construction, it is likely that even a moderate earthquake could have critical consequences on public safety and the economy of this area. The main goal of this study was to develop simulation capabilities supported by experimental testing to evaluate the seismic performance of typical unreinforced masonry buildings with flexible diaphragms located in NYC. Simplified nonlinear macro-models of wood diaphragms, masonry walls and floor-to-wall connections were developed and validated individually using data from past experiments. The models are implemented in both commercial and research software to demonstrate their practical use. In particular, a new approach for modeling flexible diaphragms is proposed that is shown to provide similar accuracy to detailed finite element models at a fraction of the computation cost. The models developed were also validated as at the system level, through shake table testing of two full-scale specimens conducted as part of this study. The specimens were designed and constructed to represent the expected loading conditions of a central portion of a one-story URM building and constructed of materials representative of older masonry construction. The tests provide a unique data set that captures the interaction between flexible floors, out-of-plane walls and their connections at, full scale.The validated macro-models can be used for performance-based seismic assessment of unreinforced masonry building in NYC and elsewhere. To demonstrate their use, preliminary studies were conducted to develop out-of-plane URM fragility curves, a building-specific collapse fragility function, and estimate the seismic response of the building when subjected to a ground shaking intensity similar to the 2011 Virginia Earthquake. The probabilistic framework and new performance definitions provided by the FEMA P58 project were used to conduct a performance-based seismic assessment for an archetype unreinforced masonry building in New York City with an emphasis on out-of-plane behavior. This preliminary study served to demonstrate the applicability of the proposed models for applications in performance-based design.
Book Synopsis The ShakeOut Scenario Supplemental Study: Unreinforced Masonry (URM) Buildings by :
Download or read book The ShakeOut Scenario Supplemental Study: Unreinforced Masonry (URM) Buildings written by and published by SPA Risk LLC. This book was released on with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Evaluation of Unreinforced Masonry Buildings by : Lin Kee Teh
Download or read book Seismic Evaluation of Unreinforced Masonry Buildings written by Lin Kee Teh and published by . This book was released on 1991 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Section 10 written by Jitendra Bothara and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assessment and Improvement of the Structural Performance of Buildings in Earthquakes by :
Download or read book Assessment and Improvement of the Structural Performance of Buildings in Earthquakes written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Assessment of Unreinforced Masonry Buildings by Means of Non-linear Static Procedures and Incremental Dynamic Analysis by : Jorge Arturo Avila Haro
Download or read book Seismic Assessment of Unreinforced Masonry Buildings by Means of Non-linear Static Procedures and Incremental Dynamic Analysis written by Jorge Arturo Avila Haro and published by . This book was released on 2015 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rapid Visual Screening of Buildings for Potential Seismic Hazards: Supporting Documentation by :
Download or read book Rapid Visual Screening of Buildings for Potential Seismic Hazards: Supporting Documentation written by and published by Government Printing Office. This book was released on 2015 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Rapid Visual Screening (RVS) handbook can be used by trained personnel to identify, inventory, and screen buildings that are potentially seismically vulnerable. The RVS procedure comprises a method and several forms that help users to quickly identify, inventory, and score buildings according to their risk of collapse if hit by major earthquakes. The RVS handbook describes how to identify the structural type and key weakness characteristics, how to complete the screening forms, and how to manage a successful RVS program.
Book Synopsis Seismic Assessment of Unreinforced Masonry Buildings In Canada by : Gilbert Bélec
Download or read book Seismic Assessment of Unreinforced Masonry Buildings In Canada written by Gilbert Bélec and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterisation and Seismic Assessment of Unreinforced Masonry Buildings by : Alistair Peter Russell
Download or read book Characterisation and Seismic Assessment of Unreinforced Masonry Buildings written by Alistair Peter Russell and published by . This book was released on 2010 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Analysis and Assessment of Historic Unreinforced Masonry Structures by : Ryan Manuel Valadao
Download or read book Seismic Analysis and Assessment of Historic Unreinforced Masonry Structures written by Ryan Manuel Valadao and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is targeted towards understanding the behaviour of unreinforced masonry structures (URM) under lateral loads that simulate earthquake effects, as well what aspects of their composition affects their behaviour. Masonry is a composite material containing bricks and mortar. In assessment of existing masonry construction uncertainties prevail regarding the homogenized material mechanical properties, which affect the estimated demands on structural masonry components and their corresponding resistances. To understand these effects, a series of nonlinear finite element parametric studies were conducted studying critical factors involved in the makeup of masonry. In addition, studies were conducted on the effectiveness of empirical equations in estimating the mechanical properties of masonry. The final aspect was three-dimensional finite element modelling of a scale URM structure that had been tested on a shake table. The findings of this study are crucial in determining the vulnerability of URM structures which include heritage construction to seismic hazards.
Book Synopsis Seismic Risk Assessment of Unreinforced Masonry Buildings at a Territorial Scale by : Jorge Muñoz Barrantes
Download or read book Seismic Risk Assessment of Unreinforced Masonry Buildings at a Territorial Scale written by Jorge Muñoz Barrantes and published by . This book was released on 2012 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Assessment of Out of Plane Loaded Unreinforced Masonry Walls by : Hossein Derakhshan
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.
Book Synopsis Seismic Evaluation and Suggested Rehabilitation of an Unreinforced Masonry Building by : Jason Lyle Mumford
Download or read book Seismic Evaluation and Suggested Rehabilitation of an Unreinforced Masonry Building written by Jason Lyle Mumford and published by . This book was released on 1995 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Planning Report written by and published by . This book was released on 1988 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
