某钢管桁架设计计算若干问题的讨论

Discussions of Some Problem about the Some Steel Pipe Truss in Design and calculation

某工程钢管桁架计算分析表明,杆间荷载产生的次弯矩效应不容忽略,按现行STS版本建模时可采用增设节点的办法处理。本文对桁架设计中减少次弯矩的调整思路、对半铰结构计算模型及对桁架腹杆设置的讨论可供类似工程参考。

The calculation and analysis about the engineering of steel pipe truss show that effect of secondary bend caused by the load beteen rod can t be neglected,and current edition of STS to set up the mold can be adopt by adding the node of rod.This text about the adjustment way of thinking that reducing secondary bend,and the discussion between the mold of semi-hinge structure in calculation and consideration on the steel truss web in design can be provided as similar engineering reference.