2014年7月下施工技术 第43卷第14期CONSTRUCTIONTECHNOLOGY83 DOI;10. 7672/sgjs2014140083 某体育场施工张拉方案及张拉模拟分析* 朱博莉,马建勋',郭彦林²,张强3 3.河北金环钢结构工程有限公司,河北石家庄050000) [摘要】斜拉结构是一种典型的刚柔组合结构,广泛应用于大跨度体育场馆屋盖结构等公共建筑中。
对于由刚性 屋盖和柔性拉索以及枪杆等组成的斜拉结构而言,预应力施工张拉通常采用逐步张拉成型的施工方法,张拉过程 中预应力的控制、结构力与形的控制以及张拉方案的确定是施工张拉要解决的核心问题。
分析制定张拉施工方案 所应遵循的原则,并以某体育场屋盖结构为例,对拟定的两种张拉顺序和两种张拉阶次进行张拉施工模拟分析,同 时依据数值分析结果评估各种张拉方案的优缺点,为该体育场屋盖钢结构张拉施工方案的最终确定提供依据。
[关键词]体育场;斜拉结构;找力分析;倒拆分析法;张拉;数值模拟 [中图分类号】TU311;TU758[文献标识码]A[文章编号]1002-8498(2014)14-0083-07 ConstructionTensioningScheme andSimulation AnalysisofCable-stayedSteelStructure Zhu Boli',Ma Jianxun',Guo Yanlin²,Zhang Qiang” (1.SchoolofHumanSelements and CivilEngineering,Xi'anJiaotongUniversity,Xi'an,Shaanxi710049,China; 2.Department ofCivilEngineering,Tsinghua University,Bejing100084,China; 3.Hebei Jinhuan Steel Construction Engineering Co.,Lud.,Shijiazhuang,Hebei 050000,China) Abstract:As a structural bination of cables and steel roof,a cable-stayed structure is widely used to the stadium roof in the large span structure of the public buildings.For the cable-stayed structure consisted of rigid steel roof,flexible cables and masts,the cable tensioning has to be carried out during the construction process step by step.In the cable tensioning process, the control of both the cable forces and the structural displacements at key points should be satisfied according to the technical requirements specified by architectural and structural designers.Accordingly,thispaper presents thebasic principles for determining the optimal tensioning scheme and simulation tensioning analysis of cable-stayed structure. As a typical example, the two tensioning sequences and two prestressed grading tensioning schemes are carefully investigated respectively in a stadium.Comparisons between simulation tensioning analytical results for these tensioning schemes are made and the best tensioning scheme was found for this practical engineering construction. Key words:stadiums;cable-stayed structure;force-findin...