环形交叉索桁结构的静力性能分析(英文)  

Static behaviour analysis for annular crossed cable-truss structures

作　　者：刘人杰[1] 薛素铎[1] 李雄彦[1] 

机构地区：[1]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124

出　　处：《空间结构》2014年第1期89-96,共8页Spatial Structures

基　　金：supported by National Natural Science Foundation of China(51378031);National Natural Science Foundation of Beijing(8132022)

摘　　要：基于平面索桁结构提出了一种新型的空间索杆结构,命名为环形交叉索桁结构.该结构可以显著改善车辐式索桁结构抗连续倒塌性能较弱的不足.基于ANSYS软件,采用非线性弧长法,分析了环形交叉索桁结构的静力性能.分析中考虑了满跨均布荷载、半跨均布荷载以等多种工况组合以及预应力变化对结构性能的影响.研究结果表明环形交叉索桁结构具有整体刚度好、内力分布合理等优势,预应力变化对结构刚度影响显著.环形交叉索桁结构的提出可为其它索杆结构的改良提供参考.A new-type cable-strut structure, named annular crossed cable-truss structure （ACCTS） is proposed in the paper which originated from plane cable-truss. The ACCTS enables to overcome the shortages of poor for progressive collapse resistance of the in-used annular open- web cable-truss structure （AOCTS）. The static mechanical behaviour of the ACCTS was analyzed in detail by ANSYS. The uniformly distributed load for whole-span and half-span were considered for the geometrical non-linear analysis. Numerical results show that the new structure shares excellent properties such as good global stiffness, reasonable distribution of internal force and variation of pre-stressing influences structural stiffness obviously. It can provide a reference for improvement of cable-strut structures.

关 键 词：索杆结构体系 环形交叉索桁结构 静力性能 连续倒塌 

分 类 号：TU394[建筑科学—结构工程] TU312.3