劲性支撑穹顶结构设计施工一体化分析  

ANALYSIS OF DESIGN AND CONSTRUCTION INTEGRATION OF RIGID BRACING DOME

作　　者：高占远[1,2] 薛素铎[1] 李雄彦[1] 何永发[1] 

机构地区：[1]北京工业大学空间结构研究中心,北京100124 [2]清华大学土木工程系,北京100084

出　　处：《工业建筑》2015年第1期56-61,共6页Industrial Construction

基　　金：国家自然科学基金资助项目(51378031);北京市自然科学基金项目资助(8132022);城市与工程安全减灾教育部重点实验室和工程抗震与结构诊治北京市重点实验室重点项目(USDE201401)

摘　　要：劲性支撑穹顶结构是一种新型的预应力空间结构,上层为索网体系,下部为刚性杆支撑体系,除撑杆外均为高强钢拉杆。从工程应用的角度,提出劲性支撑穹顶结构的设计施工一体化分析方法和步骤,并指出其中的关键问题。指出几何形状确定的关键参数是跨度、矢高、环向等分数、径向分格数以及节点坐标,依据工程实际、相关规范以及高强度钢拉杆材料的具体要求,确定各参数。并给出一种新型的撑杆下节点及关键参数的确定方法、中心场地拼装逐步张拉提升的施工方法和安装步骤。最后应用FEDR(finite element dynamic relaxation)法对施工过程进行成形分析。研究成果可为劲性支撑穹顶结构工程实际的设计与施工提供必要的理论参考。Rigid bracing dome is a new type of prestressed space structure , its upper part is a cable net system , and the lower part is a rigid rods supporting system , and the rigid rods of lower part are high strength steel tie rod except the brace rod.From the perspective of engineering application , the methods and steps for analysis of design and construction integration were given , and the key problems were pointed out .The key parameters for determining the geometric shape are span , rise, circumferential equivalent fraction , total number of radial divisions and node coordinate , and the parameters should be determined according to the concrete requirements of engineering practice , relevant specifications and high-strength steel tie rod materials .A new node of brace rod was given and determining method of key parameters also was given . The construction methods of node-by-node assembling and integral tensioning and lifting and concrete installation steps were provided .Simulation analysis was conducted on the construction process by FEDR (finite element dynamic relaxation ) method.The research results provided necessary theoretical reference for design and construction of engineering practice of rigid bracing dome .

关 键 词：劲性支撑穹顶结构 设计施工 一体化分析 FEDR法 中心场地拼装逐步张拉提升法 

分 类 号：TU399[建筑科学—结构工程] TU765