Seismic loss and resilience assessment of tall-coupled cross-laminated timber wall building

被引:11
作者
You, Tian [1 ,2 ,3 ]
Teweldebrhan, Biniam Tekle [3 ]
Wang, Wei [1 ,2 ]
Tesfamariam, Solomon [3 ,4 ]
机构
[1] Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai, Peoples R China
[2] Tongji Univ, Dept Struct Engn, Shanghai, Peoples R China
[3] Univ British Columbia, Sch Engn, Kelowna, BC, Canada
[4] Univ British Columbia, Sch Engn, Okanagan Campus,3333 Univ Way, Kelowna, BC V1V1V7, Canada
关键词
Cross-laminated timber (CLT); replaceable shear links; coupling beam; FEMA P-58; probabilistic loss assessment; seismic resilience; CLT SHEAR WALLS; PERFORMANCE EVALUATION; FRAMEWORK; METHODOLOGY; BEHAVIOR;
D O I
10.1177/87552930231152512
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Balloon-type cross-laminated timber coupled-wall (CLT-CW) structure is an emerging and sustainable option for constructing tall timber buildings. The structure features buckling restrained brace (BRB) hold-downs, balloon-type CLT walls, and coupling beams with replaceable shear links. This study investigates the probabilistic seismic performance (including economic loss, downtime, and resilience index) of a 20-story CLT-CW building. A three-dimensional (3D) structural model is developed to perform incremental dynamic analysis using 30 pairs of ground motion records that represent the seismicity of Vancouver, Canada. Intensity- and time-based loss assessments are conducted to estimate probability distributions of seismic losses according to the FEMA P-58 methodology. Post-earthquake recovery trajectories of the housing function are also presented to calculate the seismic resilience indices under different intensities. The results reveal that the coupling beams contribute the most to repair cost among all structural components. In light of the replaceability and energy dissipating role of coupling beams, the efficiency and resiliency of the CLT-CW building are validated.
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页码:727 / 747
页数:21
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