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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >A study on the seismic performance of steel-reinforced concrete frame-concrete core wall high-rise mixed structure by large-scale shaking table tests and numerical simulations
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A study on the seismic performance of steel-reinforced concrete frame-concrete core wall high-rise mixed structure by large-scale shaking table tests and numerical simulations

机译：大型振动台试验与数值模拟研究钢框架混凝土心墙高层混合结构的抗震性能

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摘要

This paper reports a study for the seismic performance of one large-scaled (1/15) model of 30-story steel-reinforced concrete frame-concrete core wall mixed structure. The study was implemented by both shaking table tests, in which the similarity ratio for lateral and gravitational accelerations was kept to 1:1, and numerical nonlinear dynamic analysis. The test observations presented herein include story displacement, interstory drift, natural vibration periods, and final failure mode. The numerical analysis was performed to simulate the shaking table test procedure, and the numerically obtained responses were verified by the test results. On the basis of the numerical results, the progressions of structural stiffness, base shear, and overturning moment were investigated, and the distributions of base shear and overturning moment between frame and core wall were also discussed. The test demonstrates the seismic performance of the steel-reinforced concrete frame-core wall mixed structure and reveals the potential overturning failure mode for high rise structures. The nonlinear analysis results indicate that the peripheral frames could take more shear forces after core wall damaged under severe earthquakes.
机译：本文报道了一种关于30层钢筋混凝土框架-混凝土心墙混合结构的大型（1/15）模型的抗震性能的研究。这项研究是通过两个振动台试验进行的，其中横向加速度和重力加速度的相似比保持为1：1，并进行了数值非线性动力学分析。本文介绍的测试结果包括故事位移，层间漂移，自然振动周期和最终失效模式。进行了数值分析以模拟振动台测试程序，并通过测试结果验证了获得的数值响应。在数值结果的基础上，研究了结构刚度，基础剪力和倾覆力矩的变化规律，并讨论了框架与芯墙之间的基础剪力和倾覆力矩的分布情况。试验证明了钢筋混凝土框架-心墙混合结构的抗震性能，并揭示了高层结构的潜在倾覆破坏模式。非线性分析结果表明，在强烈地震作用下，岩心墙破坏后，周边框架可能承受更大的剪力。

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