摘要
天津市于家堡交通枢纽站房屋盖为大跨、无柱单层网壳钢结构,外形为由正、反螺旋线编织而成的贝壳形双曲面,平面尺寸约为143m×81m。网壳网格为不规则空间四边形,所有箱形截面杆件均以不同角度交汇于节点。通过对该穹顶结构在各种作用效应下的强度、变形、整体稳定及支座的设计、节点有限元分析、防倒塌分析,保证了结构的安全。
The single layer lattice steel roof of Tianjin Yujiapu transport hub has plan dimension of 143m×81m.This doubly curved roof consists of a series of space spirals in clockwise and counter clockwise direction.The box section beams follow the spirals and form the large column free space.As the shell is double curved and grids are formed by irregular space quadrilaterals,all the elements meet in different angles.The roof structural system,design standard,loading,dynamic analysis and global stability,progressive collapse design,and connection finite element analysis were presented to guarantee the safety and reliability of the roof.
出处
《建筑结构》
CSCD
北大核心
2012年第10期13-17,共5页
Building Structure
关键词
单层网壳
大跨钢结构
螺旋线
整体稳定
几何及材料非线性
支座
有限元分析
single-layer lattice roof
large span steel structure
spiral
global stability
geometric and material nonlinearity
bearing
FEA
