(1 中国航空规划建设发展有限公司，北京 100120； 2 北京工业大学，北京 100124)
［摘要］长春经济开发区的挑篷结构采用塔柱-拉索-钢管桁架结构体系。首先研究了斜拉索布置、预应力度对整体稳定性能的影响，结果表明合理布置斜拉索可以显著提高稳定性能；其次对三种不同的塔柱模型进行稳定分析，结果表明塔柱上设置索撑体系提高了塔柱自身稳定性。计算表明预应力可以有效提高结构承载力和整体稳定性能，节点具有良好的延性性能。罕遇地震作用下的弹塑性时程分析表明，结构在大震作用下拉索仍处于弹性阶段，结构整体尚未进入塑性阶段，具有良好的抗震延性性能。
［关键词］塔柱；拉索；预应力度；稳定性能
Design and research of structural system of tower-cable-pipe truss
Ge Jiaqi1, Wang Shu1, Zhang Guojun1, Ji Jianping1, Hu Yang2(1 China Aviation Planning and Construction Development Co., Ltd., Beijing 100120,China； 2 Beijing University of Technology,Beijing 100124,China)
Abstract:The canopy structure of the stand for Changchun stadium employs a structural system of the cable-stayed pipe truss hanged over the top of two towers. The layout effect of the cable and the prestressing ratio are studied, which indicates that the reasonable layout of the cable can apparently increase the structural overall stability. The overall stability analysis for three different towers is conducted, the result of which shows that the tower with the cable system can raise the tower stability. It indicates that the prestressing can effectively increase the structural bearing capacity and the overall stability. And the finite element analysis for the connection is performed to show the connection with well ductility performance. By operating the elastic-plastic time-history analysis, the cable is still at the elastic stage and the whole structure is not involved in the plastic stage. It indicates that the structure owns a good earthquake-resistance performance.
Keywords:tower; cable; prestressing ratio; stability
作者简介：葛家琪(1964-)，男，研究员，一级注册结构工程师，Email:capdi.gssd@vip.163.com。
参考文献
［1］冯阳，覃阳，甘明，等. 北京2008年奥运会国家体育馆主体结构设计［J］. 建筑结构，2008，38(1)：1-5.
［2］钟文发. 非线性规划理论研究［D］. 北京：北京大学，2007.