跳格布置对环形交叉索桁结构静动力性能的影响  

Influence of grid-jumping arrangement on static and dynamic performance of annular crossed cable-truss structure

作　　者：薛素铎[1] 鲁建 李雄彦[1] 刘人杰 XUE Su-duo;LU Jian;LI Xiong-yan;LIU Ren-jie(College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100124,China;School of Civil Engineering,Yantai University,Yantai 264000,China)

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]烟台大学土木工程学院,山东烟台264000

出　　处：《吉林大学学报（工学版）》2020年第5期1687-1697,共11页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51778017);北京市自然科学基金项目(8172011).

摘　　要：分析了环形交叉索桁结构(ACCTS)的结构特点,提出了3种压杆跳格布置方案,并从预应力分布、荷载状态、抗屈曲能力、用钢量等方面与原方案进行了对比研究,确定了最优跳格布置顺序。最后,对最优方案与原方案二者的静、动力性能进行了系统的对比研究。研究结果表明:在不改变原结构静、动力性能的情况下,最优跳格方案不仅节约了用钢量、提高了结构的抗屈曲能力,而且简化了结构体系、降低了施工成形难度。本文研究对ACCTS在实际中的推广有一定的促进作用。Based on ACCTS,the features of ACCTS were firstly described in detail. Secondly,three arrangement schemes of struts grid-jumping were proposed,which were compared with the original scheme in terms of pre-stress distribution,load condition,buckling resistance,steel consumption and so on,and the optimal grid-jumping order was determined. Finally,based on the optimal scheme and original scheme,the static and dynamic performances of two schemes were systematically comparatively studied. The research results show that under the condition that the static and dynamic performances of the original structure are unchanged,the optimal scheme after grid-jumping not only saves the amount of steel and improves the anti-buckling ability of the structure,but also simplifies structure system and reduces the construction difficulty by means of gridjumping optimization. This research can promote the application of ACCTS in practical engineering.

关 键 词：土木工程 环形交叉索桁结构 跳格布置 荷载分析 用钢量 静动力性能 

分 类 号：TU394[建筑科学—结构工程]