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Self-Centering Steel-Timber Hybrid Shear Wall: Experimental Test and Parametric Analysis
1Department of Disaster Mitigation for Structures, Tongji University, Shanghai 200092, China.
A novel self-centering steel-timber hybrid shear wall (SC-STHSW) system enhances earthquake resilience using post-tensioned technology. This innovative structural system demonstrates excellent self-centering and energy dissipation capabilities for mid-rise and high-rise buildings.
Area of Science:
- Structural Engineering
- Materials Science
- Earthquake Engineering
Background:
- Increasing interest in timber for mid-rise/high-rise buildings due to environmental and structural benefits.
- Steel-timber hybrid shear walls (STHSW) show promise as lateral resisting systems.
- Existing STHSW systems have limitations in earthquake resilience.
Purpose of the Study:
- To propose and evaluate a new self-centering (SC)-STHSW system incorporating post-tensioned (PT) technology.
- To assess the seismic performance of the SC-STHSW system, focusing on self-centering capacity and energy dissipation.
- To provide design recommendations for the practical application of the SC-STHSW system.
Main Methods:
- Experimental testing of a full-scale SC-STHSW specimen under cyclic loading.
- Development and validation of a numerical model in OpenSees using experimental data.
- Parametric analysis to evaluate the influence of various design parameters on system performance.
Main Results:
- The SC-STHSW system exhibited satisfactory self-centering capacity and energy dissipation.
- Numerical model validation confirmed its accuracy in predicting system behavior.
- Parametric analysis identified key factors influencing self-centering, energy dissipation, and ultimate strength.
Conclusions:
- The proposed SC-STHSW system effectively addresses the earthquake resilience limitations of traditional STHSW.
- A self-centering ratio greater than 0.5 is recommended for optimal self-centering performance.
- The study supports the adoption of this innovative steel-timber hybrid system in practical engineering.
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