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Seismic Performance Comparison of Ordinary Concentrically Braced Frames in the Western and Central United States.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Seismic Performance Comparison of Ordinary Concentrically Braced Frames in the Western and Central United States./
作者:	Waters, Matthew.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2022,
面頁冊數:	238 p.
附註:	Source: Masters Abstracts International, Volume: 84-01.
Contained By:	Masters Abstracts International84-01.
標題:	Engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29261851
ISBN:	9798837541469

Seismic Performance Comparison of Ordinary Concentrically Braced Frames in the Western and Central United States.
Waters, Matthew.

Seismic Performance Comparison of Ordinary Concentrically Braced Frames in the Western and Central United States. - Ann Arbor : ProQuest Dissertations & Theses, 2022 - 238 p.

Source: Masters Abstracts International, Volume: 84-01.

Thesis (M.S.)--Marquette University, 2022.

This item must not be sold to any third party vendors.

Ordinary concentrically braced frames (OCBFs) are intended to be moderately ductile steel seismic-force-resisting systems and are permitted in low-rise buildings in regions with high seismic hazards. There has been relatively little research to quantify the seismic performance of OCBFs, with most of the previous work emphasizing the role of reserve capacity on performance. To improve the understanding of seismic performance and validate current design provisions, a series of nonlinear response-history analyses were conducted. Two, three-story OCBF study buildings were designed in accordance with ASCE/SEI 7-16 for sites in Seattle, WA and Memphis, TN; the sites have relatively high seismic hazards (Seismic Design Category D) but different tectonic settings. Well-established nonlinear modeling approaches for concentrically braced frames were utilized to analyze suites of ground motions scaled to hazard levels corresponding to 475- and 2,475-year return periods. The results of these new analyses and previous special concentrically braced frame (SCBF) studies were employed to compare OCBF seismic performance with different building locations (Seattle or Memphis), braced-frame classifications (OCBF or SCBF), and braced-frame configurations (chevron or paired single diagonal). The SCBFs do meet collapse performance standards, but the OCBFs analyzed in the present work do not meet collapse performance standards due to early onset of brace and gusset-plate connection fractures that led to large inter-story drifts. The collapse probabilities were higher for the chevron configuration OCBFs, as well as for the OCBFs designed for the Memphis site. These results suggest a need for future OCBF research and modifications to current provisions to ensure OCBFs achieve safe but economical designs.

ISBN: 9798837541469Subjects--Topical Terms:

586835
Engineering.
Subjects--Index Terms:

Braced frames

Seismic Performance Comparison of Ordinary Concentrically Braced Frames in the Western and Central United States.
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520 $a Ordinary concentrically braced frames (OCBFs) are intended to be moderately ductile steel seismic-force-resisting systems and are permitted in low-rise buildings in regions with high seismic hazards. There has been relatively little research to quantify the seismic performance of OCBFs, with most of the previous work emphasizing the role of reserve capacity on performance. To improve the understanding of seismic performance and validate current design provisions, a series of nonlinear response-history analyses were conducted. Two, three-story OCBF study buildings were designed in accordance with ASCE/SEI 7-16 for sites in Seattle, WA and Memphis, TN; the sites have relatively high seismic hazards (Seismic Design Category D) but different tectonic settings. Well-established nonlinear modeling approaches for concentrically braced frames were utilized to analyze suites of ground motions scaled to hazard levels corresponding to 475- and 2,475-year return periods. The results of these new analyses and previous special concentrically braced frame (SCBF) studies were employed to compare OCBF seismic performance with different building locations (Seattle or Memphis), braced-frame classifications (OCBF or SCBF), and braced-frame configurations (chevron or paired single diagonal). The SCBFs do meet collapse performance standards, but the OCBFs analyzed in the present work do not meet collapse performance standards due to early onset of brace and gusset-plate connection fractures that led to large inter-story drifts. The collapse probabilities were higher for the chevron configuration OCBFs, as well as for the OCBFs designed for the Memphis site. These results suggest a need for future OCBF research and modifications to current provisions to ensure OCBFs achieve safe but economical designs.
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