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Earthquakes and Structures Volume 13, Number 3, September 2017, pages 289-297 DOI: http://dx.doi.org/10.12989/eas.2017.13.3.289 |
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Seismic reliability evaluation of steel-timber hybrid shear wall systems |
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Zheng Li, Minjuan He, Frank Lam, Ruirui Zhou and Minghao Li
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| Abstract | ||
| This paper presents seismic performance and reliability evaluation on steel-timber hybrid shear wall systems composed of steel moment resisting frames and infill light frame wood shear walls. Based on experimental observations, damage assessment was conducted to determine the appropriate damage-related performance objectives for the hybrid shear wall systems. Incremental time-history dynamic analyses were conducted to establish a database of seismic responses for the hybrid systems with various structural configurations. The associated reliability indices and failure probabilities were calculated by two reliability methods (i.e., fragility analysis and response surface method). Both methods yielded similar estimations of failure probabilities. This study indicated the greatly improved seismic performance of the steel-timber hybrid shear wall systems with stronger infill wood shear walls. From a probabilistic perspective, the presented results give some insights on quantifying the seismic performance of the hybrid system under different seismic hazard levels. The reliability-based approaches also serve as efficient tools to assess the performance-based seismic design methodology and calibration of relative code provisions for the proposed steel-timber hybrid shear wall systems. | ||
| Key Words | ||
| steel-timber hybrid structures; seismic reliability; shear walls; fragility analysis; response surface method | ||
| Address | ||
| Zheng Li, Minjuan He and Ruirui Zhou: Department of Structural Engineering, Tongji University, Shanghai, 200092, China Frank Lam: Department of Wood Science, University of British Columbia, Vancouver, Canada Minghao Li: Department of Civil & Natural Resources Engineering, University of Canterbury, Christchurch, New Zealand | ||