预应力空间组合桁架的模态分析  

Model Analysis of the Prestressed Space Composite Truss Structure

作　　者：李春燕[1] 韩建平[1] 

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050

出　　处：《甘肃科学学报》2008年第1期139-142,共4页Journal of Gansu Sciences

基　　金：甘肃省自然科学基金资助项目(3ZS041-A25-023)

摘　　要：利用ANSYS有限元分析软件建立了钢筋混凝土楼板模型和预应力空间组合结构模型,对楼板模型和预应力空间组合结构模型分别进行了模态分析,同时分析了垂跨比、预应力度、拉索截面面积、纵向连接索数和楼板厚度对预应力空间组合结构自振特性的影响.Based on the model analysis method of ANSYS finite element calculation software, the model analysis of reinforced concrete floor and prestressed space composite truss was processed. At the same time, the effect caused by different parameters on the free vibration properties of the prestressed space composite truss was discussed. The parameters included drag-span ratio of cable, the value of prestressing force, the thickness of reinforced concrete floor, the cross area of tightwire and the number of prestressed tight wire. At the end, some useful suggestions were listed.

关 键 词：预应力 空间组合桁架 ANSYS 模态分析 自振特性 

分 类 号：TU398.01[建筑科学—结构工程] O327[理学—一般力学与力学基础]