【摘要】 基于某大跨度悬索式管桥设计方案,根据其结构特点,应用ANSYS分析软件建立了三维有限元模型,对模型进行了静力、模态和风振反应的有限元分析。静力计算结果表明,悬索管桥各构件均处于较低的应力状态;通过模态分析获得了悬索管桥结构的前20阶固有频率;风振动态分析结果表明,悬索管桥结构位移响应曲线与各个时刻输入的风荷载数据趋势类同,主索上的应力响应峰值较小,管桥的应力响应峰值明显增大。更多还原

【Abstract】 Based on design scenario of some longspan suspension pipe bridge and its structure performance. 3D finite element model isestablished with ANSYS software,and finite element analysis on the model’s static force, mode and wind vibration reaction iscarried out. Static calculation results show that each member of suspension pipe bridge are at lower stress state: inherentfrequency of front 20 ranks of the bridge’s structure are obtained by mode analysis; dynamic analysis results of wind vibrationdisplay (hat displace respond curve of the structure are equal to the trend of wind load data inputted at every moment, stressrespond peak value on main cable are lower, and stress respond peak value on pipe bridge are obviously higher.更多还原