施工技术 2014年7月下 128 CONSTRUCTION TECHNOLOGY 第43卷第14期 D0I:10.7672/8gis2014140128 大跨度双向张弦梁结构预应力施工技术 许曙东，贺春林2，张岭，王菲 (1.北京银泰建预应力工程有限公司，北京100085； 2.中建八局（北京）有限公司，北京100044) [摘要]以中关村航空科技园项目双向张弦梁预应力施工为例，介绍了双向张弦梁预应力施工方法及控制要点. 本工程张弦梁双向跨度较大，受力形式复杂，索力控制难度大.基于此，对预应力施工过程进行了施工模拟仿真分 析，同时对施工过程的索力、结构变形等进行监测，并对实测数据与计算结果进行对比，结果表明实测数据和理论 计算结果吻合较好. [关键词]钢结构；张弦梁；预应力；数值模拟；监测 [中图分类号]TU394;TU758 [文献标识码]A [文章编号]1002-8498(2014)14-0128-03 Prestressed Construction of Bidirectional Beam String Structure Xu Shudong' He Chunlin㎡，Zhang Ling' Wang Fei' (1.Beijing Yintaijian Prestressed Engineering Co.Ltd.Beijing 100085 China;2.China Construction Eighth Engineering Division.Co.Ltd.Beijing Branch Beijing 100044 China) Abstract:Combined with the construction of prestressed bidirectional beam string structure in Aerospace Science and Technology Park of Zhongguancun the prestress construction procedure and control points of bidirectional beam string structure are introduced.The project has a large bidirectional span the force in the cross of bidirectional string is plicated and difficult to control so simulation of the construction procedure was done at the same time the monitoring of cable stress and deformation of the structure were done.The measured data and theoretical calculation results were in good agreement. Key words:steel structures;beam string structure;prestressing;simulation;monitoring 1工程概况 中关村航空科技园项目位于北京市海淀区北 三环，一期工程分为1号科研创新楼、2号航空科研 中心.其中2号楼采光顶由双向张弦梁、钢结构屋 盖、玻璃屋面组成.张弦梁长向跨度为47.55m 短 向跨度为44.1m 跨中点矢高4.2m...
大跨度双向张弦梁结构预应力施工技术.pdf
