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-  2018 

基于三维离散单元法庞贝古城柱廊的动力特性分析 Seismic responses of Pompeii colonnade structure based on three-dimensional distinct element method

Keywords: 柱廊,离散单元法,简谐波,地震波,动力响应

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Abstract:

为探索意大利庞贝古城双层柱廊结构的地震动力响应,建立了一个典型的双层柱廊结构的三维实体模型,并用三维离散元程序3DEC对柱廊结构进行了地震动力模拟计算,分析了简谐波及实测地震波的频率、加速度幅值及荷载施加方向等对柱廊结构稳定性的影响规律.数值模拟结果表明:在简谐波作用下,柱廊结构的变形随着加速度幅值的增加而变大,低频波比高频波更容易导致柱廊结构发生破坏,位移较大的部位出现在横梁和下层石柱,横梁可以削弱向上传播的动力荷载,柱廊结构在平面外方向的抗震能力低于平面内方向

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