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提出了一种可用于非线性密肋复合墙结构的基于动力可靠度计算的设计方法。首先,根据三角级数模型生成平稳高斯随机地震动过程,由时间包络函数可得非平稳随机地震动过程,其中功率谱密度函数采用Clough-Penzien模型,其参数采用与《建筑抗震设计规范》对应的地震动随机模型参数。其次,根据密肋复合墙结构的力学性能试验,建立密肋复合墙体的恢复力模型并确定其参数。随后对密肋复合墙结构进行动力分析,应用子集模拟法对其进行动力可靠度计算,并给出基于动力可靠度计算设计方法的执行框图。最后,应用所提方法对6层密肋复合墙结构进行了计算,结果表明密肋复合墙结构基于动力可靠度计算的设计方法是可行的。
A design method based on dynamic reliability calculation for nonlinear multi-ribbed composite wall structure is proposed. Firstly, the steady-state Gaussian random ground motion is generated according to the trigonometric series model, and the nonstationary ground motions are obtained from the time envelope function. The Clough-Penzien model is used for the power spectral density function, and the parameters are in accordance with the Code for Design of Seismic Design of Buildings Corresponding ground motion stochastic model parameters. Secondly, according to the mechanical performance test of the multi-ribbed composite wall, the restoring force model of the multi-ribbed composite wall is established and its parameters are determined. Then, the dynamic analysis of the multi-ribbed composite wall structure is carried out, and the sub-set simulation method is used to calculate the dynamic reliability of the multi-ribbed composite wall structure. The execution block diagram of the design method based on dynamic reliability calculation is given. Finally, the proposed method is used to calculate the structure of 6-layer multi-ribbed composite wall. The results show that the design method of multi-ribbed composite wall based on dynamic reliability calculation is feasible.