东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (8): 1201-1204.DOI: -

• 论著 • 上一篇    下一篇

斜拉桥成桥及施工阶段的索力优化

张文献;刘旭光;李东炜;欧丹;   

  1. 东北大学资源与土木工程学院;中铁九局;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-08-15 发布日期:2013-06-22
  • 通讯作者: Zhang, W.-X.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50778035);;

Optimizing cable tension during construction and completion of a cable-stayed bridge

Zhang, Wen-Xian (1); Liu, Xu-Guang (1); Li, Dong-Wei (2); Ou, Dan (1)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China; (2) Zhong Tie Ninth Bureau, Shenyang 110200, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-08-15 Published:2013-06-22
  • Contact: Zhang, W.-X.
  • About author:-
  • Supported by:
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摘要： 为了在斜拉桥成桥过程中合理优化施工索力,以期实现设计思想,利用MIDAS/Civil软件对在建的某斜拉桥进行了有限元分析,实现了对该桥成桥阶段和施工阶段的索力模拟计算.分别采用刚性支承连续梁法、零位移法、弯曲能量最小法确定恒载初始索力,并对这些方法加以比较;认为仅用上述的一种方法对索力进行优化,局限性很大,提出利用综合法计算成桥索力,可达到满意的优化效果.采用正装分析法对各施工工况进行仿真,绘制出施工阶段的索力时程曲线,用于该桥施工控制过程,获得了满意效果.

关键词: 斜拉桥, 索力优化, 成桥状态, 索力时程曲线, 有限元分析, 正装分析

Abstract: To rationally optimize the cable tension in the construction process of a cable-stayed bridge so as to realize the idea of design, the software MIDAS/Civil was used for FEA to a cable-stayed bridge being constructed. Then, the cable tension during construction and completion of the bridge was calculated through numerical simulation. With the methods of rigid support continuous beam, zero-displacement and bending energy minimization used separately to determine the initial cable tension under the dead load, the different results were compared with each other and supposed that using a single method mentioned above to optimize the cable tension is significantly limited. A comprehensive method is therefore proposed to calculate the cable tension, by which a favorable optimization result is available. Each construction step is simulated by the orderly-erecting analysis, then the relevant time-dependent cable tension curve was plotted to control the construction process of the bridge, thus providing a satisfactory effect.

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