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    Experimental Seismic Behavior of a Full-Scale Four-Story Soft-Story Wood-Frame Building with Retrofits. I: Building Design, Retrofit Methodology, and Numerical Validation

    Source: Journal of Structural Engineering:;2016:;Volume ( 142 ):;issue: 004
    Author:
    Pouria Bahmani
    ,
    John W. van de Lindt
    ,
    Mikhail Gershfeld
    ,
    Gary L. Mochizuki
    ,
    Steven E. Pryor
    ,
    Douglas Rammer
    DOI: 10.1061/(ASCE)ST.1943-541X.0001207
    Publisher: American Society of Civil Engineers
    Abstract: Soft-story wood-frame buildings have been recognized as a disaster preparedness problem for decades. There are tens of thousands of these multifamily three- and four-story structures throughout California and other parts of the United States. The majority were constructed between 1920 and 1970 and are prevalent in regions such as the San Francisco Bay Area in California. The NEES-Soft project was a five-university multiindustry effort that culminated in a series of full-scale soft-story wood-frame building tests to validate retrofit philosophies proposed by (1) Federal Emergency Management Agency’s recent soft-story seismic retrofit guideline for wood buildings and (2) a performance-based seismic retrofit (PBSR) approach developed as part of the NEES-Soft project. This paper is the first in a set of companion papers that presents the building design, retrofit objectives and designs, and full-scale shake table test results of a four-story 370-m2 (4,000-ft2) soft-story test building. Four different retrofit designs were developed and tested at full scale, each with specified performance objectives, which were typically not the same. Three of these retrofits were stiffness or strength–based strategies and one applied supplemental damping devices in a pinned preassembled frame. This paper focuses on the building and retrofit design methodologies and specifics and the companion paper presents the experimental results of full-scale shake table tests ranging from 0.2- to 1.8-g spectral acceleration for all four retrofits.
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      Experimental Seismic Behavior of a Full-Scale Four-Story Soft-Story Wood-Frame Building with Retrofits. I: Building Design, Retrofit Methodology, and Numerical Validation

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4244349
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    contributor authorPouria Bahmani
    contributor authorJohn W. van de Lindt
    contributor authorMikhail Gershfeld
    contributor authorGary L. Mochizuki
    contributor authorSteven E. Pryor
    contributor authorDouglas Rammer
    date accessioned2017-12-30T12:59:56Z
    date available2017-12-30T12:59:56Z
    date issued2016
    identifier other%28ASCE%29ST.1943-541X.0001207.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4244349
    description abstractSoft-story wood-frame buildings have been recognized as a disaster preparedness problem for decades. There are tens of thousands of these multifamily three- and four-story structures throughout California and other parts of the United States. The majority were constructed between 1920 and 1970 and are prevalent in regions such as the San Francisco Bay Area in California. The NEES-Soft project was a five-university multiindustry effort that culminated in a series of full-scale soft-story wood-frame building tests to validate retrofit philosophies proposed by (1) Federal Emergency Management Agency’s recent soft-story seismic retrofit guideline for wood buildings and (2) a performance-based seismic retrofit (PBSR) approach developed as part of the NEES-Soft project. This paper is the first in a set of companion papers that presents the building design, retrofit objectives and designs, and full-scale shake table test results of a four-story 370-m2 (4,000-ft2) soft-story test building. Four different retrofit designs were developed and tested at full scale, each with specified performance objectives, which were typically not the same. Three of these retrofits were stiffness or strength–based strategies and one applied supplemental damping devices in a pinned preassembled frame. This paper focuses on the building and retrofit design methodologies and specifics and the companion paper presents the experimental results of full-scale shake table tests ranging from 0.2- to 1.8-g spectral acceleration for all four retrofits.
    publisherAmerican Society of Civil Engineers
    titleExperimental Seismic Behavior of a Full-Scale Four-Story Soft-Story Wood-Frame Building with Retrofits. I: Building Design, Retrofit Methodology, and Numerical Validation
    typeJournal Paper
    journal volume142
    journal issue4
    journal titleJournal of Structural Engineering
    identifier doi10.1061/(ASCE)ST.1943-541X.0001207
    pageE4014003
    treeJournal of Structural Engineering:;2016:;Volume ( 142 ):;issue: 004
    contenttypeFulltext
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