Research on Seismic Behavior of Wood-Concrete Hybrid Structure

Abstract eng:
While there is a relatively large body of technical information on the seismic performance of wood-frame buildings to resist seismic ground motions, the quantitative assessment of seismic resistance of wood-concrete hybrid structure is less well understood. In this paper, the shake table tests on 3-storey full-scale wood-concrete hybrid buildings, consisted of a symmetric two-storey wood-frame construction on top of a one-storey concrete frame were briefly introduced. A total of five specimens with different structural configurations representing different stiffness ratios between the wood-frame construction and concrete frame were tested on the shaking table. The natural frequencies, damping ratios and the seismic performances of accelerations and displacements at each floor were discussed. The elastic numerical calculations of these specimens under earthquake actions are performed. Based on these test data and calculation results, some conclusions are drawn. In general, it is found that seismic response is greater for specimens with smaller stiffness ratio.

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