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首页> 外文会议>International Conference on Structures and Building Materials >Dynamic Load-Displacement Behavior Simulation of RC Columns Considering Strain Rate and Nonlinearity Effects
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Dynamic Load-Displacement Behavior Simulation of RC Columns Considering Strain Rate and Nonlinearity Effects

机译：考虑应变率和非线性效应的RC色谱柱动态负载 - 位移行为模拟

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In this study, numerical simulations on the dynamic load-displacement behavior of typical RC columns under dynamic loadings considering the strain rate effect and the influence of shear deformation, geometrical nonlinearity, plastic hinge zone were performed with a dynamic fiber element model, where the dynamic constitutive model of concrete considering the strain rate effects proposed by the CEB-FIP code (1990) was employed. The developed dynamic fiber element models with and without the consideration of shear deformation were employed to simulate the load-displacement behavior of RC column specimens with different shear span to depth ratios and under different loading speeds. The simulation results were compared with test measurements. Results show that difference between the simulation results with and without the consideration of shear deformation can be detected, especially for specimens with small shear span to depth ratios. The simulation results are closer to the test measurements for all of the specimens when shear deformation is considered. The shear deformation effect on the dynamic load-displacement behavior of short columns subjected to dynamic loadings is needed to be considered.
机译：在本研究中，考虑应变速率效应和剪切变形，几何非线性，塑料铰链区的动态载荷，几何非线性，塑料铰链区的动态负荷下典型RC色谱柱动态载荷 - 位移行为的数值模拟。采用了考虑CEB-FIP码（1990）提出的应变率效应的具体模型。使用具有和不考虑剪切变形的发达的动态纤维元件模型来模拟RC柱样品的负载 - 位移行为，其具有不同的剪切跨度和不同的装载速度。将仿真结果与测试测量进行比较。结果表明，可以检测到仿真结果与不考虑剪切变形的仿真结果之间的差异，尤其适用于具有小剪切跨度的试样进行深度比率。考虑剪切变形时，模拟结果更接近所有样本的测试测量。需要考虑对经受动态载荷的短柱的动态载荷 - 位移行为的剪切变形效果。

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