摘要
第十三届全国冬季运动会冰上运动中心——速滑馆钢屋盖采用张弦桁架结构形式。为了对体系的形成过程进行安全控制,采用大型通用有限元软件ANSYS对张弦桁架屋面结构进行了详细的施工仿真分析,确定出合理的张拉施工方案。重点介绍了交叉索索力及长度的确定、流水式预应力施工模拟分析及温度变化对张拉施工的影响分析。模拟分析和实测结果表明,提出的流水式预应力施工方案确保了结构施工过程的稳定与安全,同时结构成型态的预应力拉索索力和结构变形符合设计要求;一端张拉、一端固定的张拉形式可以减少设备的投入,实际张拉效果较为理想;交叉拉索预应力的确定原则较为合理,温度变化对张拉施工的影响较小,可以忽略。
The roof of Urumchi Speed-skating Gymnasium is a truss string structure.For the safety of construction process of structural system,the structure of truss roof is modeled and a reasonable tension construction scheme is determined using finite element software ANSYS.This paper presents the determination of cross cable force and length,the pipeline analysis of prestressed construction,and the influence of temperature change on tensioning construction.The experimental and analytical results show the proposed pipeline prestressed construction method is capable of providing sufficient stability and security during the construction.Also,the prestressing cable force and structural deformation of the structure can meet the design requirements.The tension form of one end tension and one end of fixed can reduce the investment of equipment,and the actual outcome is better.The determination principle of crossing cable prestress is reasonable,and the temperature change has negligible effect on tensile construction.
出处
《建筑钢结构进展》
CSCD
北大核心
2016年第1期80-88,共9页
Progress in Steel Building Structures
关键词
张弦桁架结构
流水式施工
施工模拟分析
交叉拉索
truss string structure
pipeline construction
the analysis of construction simulation
cross cable
