摘要
以平顶山市城东河路湛河桥主桥——斜靠式钢筋混凝土拱桥为研究对象,采用有限元程序Midas/civil建立了该拱桥空间有限元计算模型.考虑了内外拱肋施工完毕、系杆梁张拉、吊杆张拉等施工阶段,对该斜靠式拱桥施工阶段的空间稳定性进行了计算,对比了两种施工工序对该桥梁结构空间稳定性的影响.计算结果表明,该拱桥施工阶段最小稳定系数为7.28,满足拱桥稳定性的要求.所得结论已为该拱桥施工监控直接服务,并对同类桥梁建造有较大的参考价值.
The main bridge of Zhanhe River located in Pingdingshan city is a double X-shape reinforced concrete arch bridge. With the aid of the Midas/civil finite element software, the three-dimensional finite element model of the Zhanhe Bridge is established according to the actual construction stages and the design construction stages. The stability safety coeffcients for different construction stages, such as arch-rib completed,tie bar beam tensioning and suspender tensioning are calculated. The numerical results indicate that the 1st order stability factors of the smallest bridge in the whote construction process is 7.28, which meets the requirement of arch ridge stability. The main results are useful for the design, construction and maintenance of the same bridges.
出处
《郑州大学学报（理学版）》
CAS
北大核心
2009年第4期103-107,共5页
Journal of Zhengzhou University:Natural Science Edition
基金
国家自然科学基金资助项目
编号50748028
关键词
斜靠式拱桥
稳定性分析
有限元法
施工阶段
double X-shape arch bridge
stability analysis
finite element method
construction stage
