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《Journal of Earthquake Engineering and Engineering Vibration》 2008-01
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Shaking table tests on 3-storey wood-concrete hybrid structure

XIONG Haibei 1,NI Chun 2,LU Xilin 1,JIA Guocheng 1(1.College of Civil Engineering,Tongji University,Shanghai 200092,China;2.FP Innovation Forintek,Vancouver V6T 1W5,Canada)  
When 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 hybrid is less well understood.In this paper,the shaking table tests of full-scale wood hybrid buildings are reported.The 3-storey specimen,6.1m×3.7m in plan,consisting of a symmetric two-storey wood-frame structure on top of a one-storey concrete frame.A total of five different structural configurations representing different stiffness ratios between the wood-frame structure and concrete frame were tested.Shaking was applied in the longitudinal direction by three earthquake ground motions applied successively at peak acceleration levels of 0.1g to 0.5g.The natural frequencies and damping of integral structure were detected before and after each excitation.The accelerations and displacements at every floor,as well as the anchorage forces and uplift displacements between upper wood structures and lower concrete frames were recorded.Based on these test results,some conclusions are drawn that:(1) Models show good performance to resist seismic excitation up to 0.5g.(2)The anchor bolts connections between concrete and wood structure are reliable.(3) The first mode vibrations type is dominant in each of five models,but the second mode vibration is visible in concrete frame with large stiffness ratio.(4) Displacement response of model with larger stiffness ratio is not so strong as that with smaller ratio under ground motion.
【Fund】: 中国-加拿大科技合作项目(20061101)
【CateGory Index】: TU398.9;TU352.11
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