2016年5月上 施工技术 第45卷第9期 CONSTRUCTIONTECHNOLOCY 71 DOI: 10. 7672/sgjs2016090071 空间预张力结构施工误差及敏感性分析* 崔宇红'，郑小飞'，陈联盟²，闫相明3，周--4 （1.三箭建设工程集团有限公司，浙江温州325000；2.温州大学建筑工程学院，浙江温州325035； 3.中厦建设有限公司，浙江温州325000；4.常州工学院土木与建筑学院，江苏常州213002） [摘要】分析预张力结构施工张拉过程中的误差特点，基于ANSYS软件数值模拟及模型试验，通过调整杆件长度 和同时调整外圈拉索长度模拟杆件长度误差及支座节点径向位置偏差来分析结构误差敏感性。
研究表明，不同构 件具有不同的长度误差敏感性，本结构中环索误差敏感性最强，槐杆最弱，脊索拉索居中；支座节点径向误差较杆 件长度偏差具有更为显著的误差敏感性，其误差效应相当于将外圈拉索分别伸长相同长度引起的索内力偏差之 和；试验结果与ANSYS理论分析结果基本接近。
[关键词]预应力；预张力结构；拉索；误差；数值分析；试验 [中图分类号]TU394 [文献标识码]A [文章编号〕1002-8498（2016）09-0071-03 ConstructionErrorAnalysisandErrorSensitivityResearchonthe PrestressingSpatial Structures Cui Yuhong'，ZhengXiaofei'，Chen Lianmeng²，YanXiangming”，Zhou Yiyi (1.Sanjian Construction Group Co.Ld.，Wenzhou，Zhejang325000,China;2.College ofArchitecture and CiuilEngineering，Wenzhou University,Wenzhou，Zhejang 325035,China;3.Zhongsha Construction Co.,Ld.， Wenzhou，Zhejiang325000,China;4.College of Ciuil Engineering and Architecture，Changzhou Institute of Technology，Changzhou,Jiangsu 213002，China） Abstract:The construction error characteristic and allowance range of the prestressing structure was analyzed and then the error sensitivity of element length error and joints position error were studied by the ANSYS software numerical simulation and model experiment respectively，where the element length error was simulated by imposing the temperature action on every member. The study results indicated that different elements had different length error sensitivity.The error sensitivityof the hoop cable was the most sensitive，that f theridge cablesanddiagonalcableswerelowerand the struts werethe lowestThe error sensitivity of the joint position was more obvious than that of the element length error sensitivity. The experimental results performed almost consistent with the theoretical results. Key words:prestressing;prestressed structures; cables;errors；simulation;testing 0引言 于预张力结构尤其是群索预张力结构，如果能通过 已有理论分析及试验研究表明，精确控制构件 精确控制对拉索建立预张力，那么体系亦可建 原长并按原长进行组装，预张力结构将能达到理想...
