摘要
通过理论推导,得到张弦梁结构的曲线形状及下弦杆的初张力大小,并将该结果应用于某体育馆张弦梁屋盖设计。对该结构屋盖进行屈曲分析、极限承载力分析,分析结果表明,结构在满布1.6倍风吸荷载标准值作用下,下弦杆压曲。结构在满布2.3倍风吸荷载标准值作用下支座水平力达到设计限值。节点分析表明,在设计荷载作用下节点区尚处于弹性阶段,满足承载力设计要求。
In this paper,the curve shape of the beam string structure and the initial tension of the lower chord are obtained by theoretical deduction,and the results are applied to the design of the beam string roof of a gymnasium.The buckling analysis and load bearing capacity analysis of the structure roof show that the lower chord of the structure is buckling under 1.6 times of nominal value of the wind load.The horizontal force of the bearings reaches the design limit when the structure is loaded with 2.3 times of nominal value of the wind load.The joint analysis shows that the joint is still in the elastic stage under the design load,which meets the design requirements of bearing capacity.
作者
朱奇
姚开明
戚向明
ZHU Qi;YAO Kaiming;QI Xiangming(Zhejiang Greenton Architectural Design Co.,Ltd.,Hangzhou 310007,China)
出处
《结构工程师》
2021年第1期221-227,共7页
Structural Engineers
关键词
张弦梁结构
初张力
屈曲分析
极限承载力
beam string structure
initial tension
buckling analysis
load bearing capacity
