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Experimental and numerical analyses on dynamic properties of materials in shaking table test

机译：振动台试验中材料动态性能的实验与数值分析

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This paper presents a study on the effects of strain rate on two kinds of materials in shaking table test under seismic loading. Firstly, the dynamic compressive tests of microconcrete are undertaken using the large static and dynamic test system under the strain rate (10~(-5)/s ～ 10~(-2)/s) of seismic action. From the results of the test, Dynamic Increasing Factors (DIF) which are functions of strain rate and quasi-static strength of microconcrete are proposed. Secondly, the dynamic tensile properties of iron wire were also studied under the seismic strain rate. Moreover, DIF are gotten based on the yield and ultimate tensile strength. Finally, considering the strain rate effects of microconcrete and iron wire, the dynamic properties of the two materials are analyzed using dynamic finite element method. For the purpose of illustration, the seismic performance of Reinforced Concrete (RC) frame-wall scale model was investigated by nonlinear time history analytical method using the proposed DIF. The results of this paper may serve as a reference for design of the dynamic scale model.
机译：本文介绍了在地震载荷下振动台试验中菌株对两种材料的影响研究。首先，使用大的静态和动态测试系统在地震作用的应变率（10〜（ - （-5）/ s〜10〜（2）/ s）下使用大的静态和动态测试系统进行的动态压缩试验。从试验结果，提出了一种是作为应变率和微电子仪的函数的动态增加因子（DIF）。其次，还在地震应变率下研究了铁丝的动态拉伸性能。此外，基于产率和极限拉伸强度得到不同的差异。最后，考虑到微循环和铁线的应变率效应，使用动态有限元法分析了两种材料的动态性质。出于说明的目的，通过使用所提出的DIF的非线性时间历史分析方法研究了钢筋混凝土（RC）框架级模型的地震性能。本文的结果可以作为动态规模模型的设计参考。

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