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首页> 外文期刊>Journal of Performance of Constructed Facilities >Using Metallic Dampers to Improve Seismic Performance of Soft-Story RC Frames: Experimental and Numerical Study
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Using Metallic Dampers to Improve Seismic Performance of Soft-Story RC Frames: Experimental and Numerical Study

机译：使用金属阻尼器来改善软体故事RC框架的地震性能：实验和数值研究

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摘要

The poor seismic response of gravityload-designed reinforced concrete (RC) frames with a soft story can be effectively controlled by using metallic dampers as passive energy dissipation devices. However, the absence of adequate large-scale test results and numerical tools for the accurate prediction of the seismic response of strengthened RC frames impedes their application in construction practice. This study presents a strengthening technique for the RC frame with a soft story using combined metallic yielding devices. Pseudodynamic testing of a two-story large-scale test specimen has been conducted to investigate its seismic response under varying amplitudes of a selected ground motion. A quasistatic cyclic test has been conducted to evaluate the collapse resistance of the strengthened specimen. In addition, a numerical model using computer software OpenSees has been developed to predict the seismic response of the strengthened RC frame. Both cyclic pushover and nonlinear dynamic analyses have been conducted to predict the seismic response and the collapse resistance of the strengthened specimen. The results of the numerical study matched reasonably well with the experimental findings.
机译：通过使用金属阻尼器作为被动能量耗散装置，可以有效地控制具有软故事的难以理解的钢筋混凝土（RC）框架的差的地震响应。然而，没有足够的大规模测试结果和用于精确预测强化RC帧的地震反应的数值工具阻碍了它们在施工实践中的应用。本研究介绍了使用组合金属产量器件具有软故事的RC帧的强化技术。已经进行了两层大规模试样的假影能测试，以研究所选择的地面运动的变化幅度下的地震反应。已经进行了Quasistatic循环试验以评估强化样品的塌陷性。另外，已经开发了一种使用计算机软件开放的数值模型来预测增强的RC帧的地震响应。已经进行了循环推进器和非线性动态分析以预测加强标本的地震反应和塌陷性。数值研究的结果与实验结果相当好。

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