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Title: Natural Hazards Research Summit 2022: Establishing Fragility Curves for Seismic Resilience of Mass Timber Buildings with Self-Centering Cross-Laminated Timber Shear Walls
Driven by demand for sustainable buildings and a reduction in construction time, mass timber buildings, specifically cross-laminated timber (CLT), is being more widely used in mid-rise buildings in the US. Low damage post-tensioned self-centering (SC) CLT shear walls (SC-CLT walls) provide an opportunity to develop seismically resilient CLT buildings. Previous research focused primarily on the lateral-load response under unidirectional loading of isolated self-centering timber walls, without considering the interaction with the adjacent building structural components, i.e., the floor diaphragms, collector beams, and gravity load system. Buildings response under seismic loading is multidirectional and there are concerns that multidirectional loading may be more damaging to SC-CLT wall panels and the adjacent building structural components than unidirectional loading, which affects the potential seismic resilience of buildings with SC-CLT walls. A series of lateral-load tests of a 0.625-scale timber sub-assembly was conducted at the NHERI Lehigh Large-Scale Multi-Directional Hybrid Simulation Experimental Facility to investigate the the lateral-load response and damage of SC-CLT walls and the capability of the adjacent building structural components i.e., the floor diaphragms, collector beams, and gravity load system to accommodate the building response and the controlled-rocking of the SC-CLT walls under multidirectional lateral loading.  more » « less
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Author(s) / Creator(s):
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Publisher / Repository:
Date Published:
Subject(s) / Keyword(s):
["Cross-laminated timber","Self-centering","Multidirectional lateral loading","Lateral-load response","Damage states","Repair","Fragility functions","Earthquake performance."]
Medium: X
Sponsoring Org:
National Science Foundation
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  3. null (Ed.)
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