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Analysis of prestressing construction technology of bidirectional string beam structure in large stadiumChinese Full Text

LUO Ju-lin ;ZHANG Peng ;ZHU Zi-kang;

Abstract: 双向张弦梁结构施工稳定性对保证大型场馆施工安全具有重要意义,为此,分析大型场馆双向张弦梁结构预应力施工技术。以威海国际经贸交流中心项目中的多功能展厅双向张弦梁结构为施工对象,设计7榀张弦梁,制定张拉方案。根据方案对7榀张弦梁进行张拉,通过有限元模拟张拉方案获取每一施工步骤下双向张弦梁变化,并监测实际张拉时的拉索索力变化。经实验验证:实际施工时的拉索索力与有限元模拟结果基本一致,未出现较大误差,说明该索力能够有效保障张拉过程顺利实现;仿真测试下,每一张拉阶段每榀张弦梁各部位的横向位移、竖向位移均保持在合理范围内,不会对大型场馆结构造成严重影响;且在张拉时张弦梁的轴力与弯矩较低,使张弦梁具备较高的抗拉与抗弯性能,还能够保持较低的起拱值,保证大型场馆施工的安全性;施工完成后双向张弦梁的应力分布在158.1~-248.1MPa,符合施工安全要求。 
  • DOI:

    10.14189/j.cnki.cm1981.2023.12.003

  • Series:

    (C) Architecture/ Energy/ Traffic/ Electromechanics, etc

  • Subject:

    Architecture and Engineering

  • Classification Code:

    TU757

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