大跨度张弦梁结构施工顺序研究  

STUDY ON CONSTRUCTION SEQUENCE OF LARGE-SPAN BEAM STRING STRUCTURES

作　　者：吴曦 于吉圣 张兆平 方星星 张玉磊 常永强 

机构地区：[1]中建钢构有限公司,上海200120

出　　处：《工业建筑》2013年第12期133-137,共5页Industrial Construction

摘　　要：对柔性结构来说,不同的张拉过程和顺序使成型时结构的几何形状和刚度均不同,寻求合理的施加顺序是施工的关键技术。采用数值模拟方法并结合南京会议展览中心工程对大跨度张弦梁结构施工顺序进行研究。以3种典型的施工顺序为例,对施工过程中各梁索力和位移的相互影响进行分析,给出它们的影响曲线。最后,根据不同施工顺序的结构成型状态,提出实际工程中施工方法的选取建议。Geometry and stiffness of assembled flexible structure are different because of changes in tensioning process and construction sequence. Seeking rational applying sequence is the key to the construction technology. Using the finite element simulation method, and combining with the Nanjing expo center project it was studied the construction sequence of large-span beam string structures. As example, three typical construction sequences＇ variation tendency of cable force and displacement was analyzed, and then their curves were given. In the end, according to the structure forming state by different construction sequence, some recommendations for selecting construction method are made.

关 键 词：张弦梁 施工顺序 有限元 钢结构 

分 类 号：TU757[建筑科学—建筑技术科学]