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索杆张力结构的动力特性和非线性地震响应分析

, PP. 186-190

Keywords: 索杆张力结构,非线性,预应力,动力响应

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Abstract:

索杆张力结构是以拉索和压杆为基本单元构成的自平衡体系,并通过预应力提供结构刚度的一类新型空间结构。通过修正的拉格朗日方程推导了索杆张力结构的增量运动方程,且采用Ne-wmark常平均加速度法求解方程,在每个时间步内应用了修正的牛顿拉斐逊法。应用此方法对索杆张力柱面网壳的自振特性及其在地震作用下的非线性动力响应进行了数值模拟分析。

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