大跨度体内折线预应力钢网架的静力特性分析

Static Characteristic Analysis of Large-span Triangular Pyramidal Simply-supported Internal Broken Line Pre-stressed Steel Space Truss

用有限元分析法对有无预应力的大跨度周边三角锥简支承钢网架进行静力分析与对比。采用有限元软件midas gen对两种网架进行支座反力、变形、节点位移、应力比的对比与分析,得出了两种结构的各项对比图,从而说明了大跨度周边三角锥简支承体内折线预应力钢网架的诸多优点。

The finite element method was used to analyze and compare with or without prestressed large-span around triangular pyramidal simply supported steel space truss. Counteracting force, deformation, node displacement and stress ratio of two kinds of space truss were contrasted and analyzed by using finite element software Midas Gen. The contrast picture of the two structures was obtained to illustrate many advantages of Large span around triangular pyramidal simply supported internal broken line prestressed steel space truss.