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柱承式钢筋混凝土立筒群仓的动力特性分析

DOI: 10.13197/j.eeev.2014.03.151.gongyq.020, PP. 151-156

Keywords: 钢筋混凝土立筒群仓,变截面Timoshenko梁,动力特性分析,半无限大弹性地基,常微分方程求解器

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Abstract:

为了分析柱承式钢筋混凝土立筒群仓的动力特性,本文将其简化为支撑在半无限大弹性地基上的变截面Timoshenko梁组合体。选取组合体中性层的挠度和横截面绕中性轴的转角为基本未知函数,将其自由振动问题,通过能量原理转化为由这两个未知函数组成的常微分方程组,然后利用常微分方程求解器(ODEsolver)求其数值解,得其自振频率和振型,并将数值解与相应的试验数据进行对比,以验证简化模型的正确性以及数值方法的有效性与精度。

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