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Seismic Response of Midrise Light Wood-Frame Buildings with Portal Frames

Chen, Zhiyong / Chui, Ying H. / Ni, Chun / Xu, Jian

The seismic response of midrise light wood-frame buildings incorporating portal frames and shear walls were investigated via numerical simulation. Because portal frames and shear walls exhibit different ductility characteristics, of specific interest in this paper is the seismic force-modification factor for the combined building system. An approach to estimate the ductility-related force-modification factor, $R_{d}$ , for the hybrid light wood-frame building containing two types of lateral load-resisting systems with different $R_{d}$ was proposed. One-, four-, and six-story buildings with layouts that rely on shear walls only or a combination of shear walls and portal frames were designed using the $R_{d}$ estimated from the proposed approach. Frequency and nonlinear time history analyses were performed on these multistory hybrid buildings using a modified macro element model to represent the lateral-resistant element in finite-element program, ABAQUS. The results show that the use of a $R_{d}$ value higher than the lowest $R_{d}$ factor of the two lateral load-resisting systems is justified.

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Seismic Response of Midrise Light Wood-Frame Buildings with Portal Frames

Chen, Zhiyong / Chui, Ying H. / Ni, Chun / Xu, Jian

The seismic response of midrise light wood-frame buildings incorporating portal frames and shear walls were investigated via numerical simulation. Because portal frames and shear walls exhibit different ductility characteristics, of specific interest in this paper is the seismic force-modification factor for the combined building system. An approach to estimate the ductility-related force-modification factor, $R_{d}$ , for the hybrid light wood-frame building containing two types of lateral load-resisting systems with different $R_{d}$ was proposed. One-, four-, and six-story buildings with layouts that rely on shear walls only or a combination of shear walls and portal frames were designed using the $R_{d}$ estimated from the proposed approach. Frequency and nonlinear time history analyses were performed on these multistory hybrid buildings using a modified macro element model to represent the lateral-resistant element in finite-element program, ABAQUS. The results show that the use of a $R_{d}$ value higher than the lowest $R_{d}$ factor of the two lateral load-resisting systems is justified.

Seismic Response of Midrise Light Wood-Frame Buildings with Portal Frames

Chen, Zhiyong / Chui, Ying H. / Ni, Chun / Xu, Jian

The seismic response of midrise light wood-frame buildings incorporating portal frames and shear walls were investigated via numerical simulation. Because portal frames and shear walls exhibit different ductility characteristics, of specific interest in this paper is the seismic force-modification factor for the combined building system. An approach to estimate the ductility-related force-modification factor, $R_{d}$ , for the hybrid light wood-frame building containing two types of lateral load-resisting systems with different $R_{d}$ was proposed. One-, four-, and six-story buildings with layouts that rely on shear walls only or a combination of shear walls and portal frames were designed using the $R_{d}$ estimated from the proposed approach. Frequency and nonlinear time history analyses were performed on these multistory hybrid buildings using a modified macro element model to represent the lateral-resistant element in finite-element program, ABAQUS. The results show that the use of a $R_{d}$ value higher than the lowest $R_{d}$ factor of the two lateral load-resisting systems is justified.

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Title:

Seismic Response of Midrise Light Wood-Frame Buildings with Portal Frames

Contributors:

Chen, Zhiyong (author) / Chui, Ying H. (author) / Ni, Chun (author) / Xu, Jian (author)

Published in:

Journal of Structural Engineering ; 140

Publication date:

2013-05-27

ISSN:

0733-9445 , 1943-541X

DOI:

https://doi.org/10.1061/(ASCE)ST.1943-541X.0000882

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

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