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Geometric Nonlinear Analysis of the Rib-Hoisting for Long-Span CFST Arch Bridge

机译:长跨度CFST拱桥罗纹吊装的几何非线性分析

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This paper is concentrated on the geometric nonlinear static analysis of the rib-hoisting for concrete filled steel tubular (CFST) long-span arch bridges. Applying the Updated Lagrangian Formulation (U. L. Formulation) a geometric nonlinear static finite element analysis program of cables, bars and beams is presented. Based on the progressive algorithm, the program of the finite element considering geometric nonlinear condition has been made to analyze the construction process of rib-hoisting for Nannidu Arch Bridge, which lies in Enshi city, Hubei province. The calculated value considering the nonlinear effect is very close to the measured value.
机译:本文集中在混凝土填充钢管(CFST)长跨度拱桥的肋升式的几何非线性静态分析上。 介绍了更新的拉格朗日配方(U.L.配方),提出了电缆,条和梁的几何非线性静态有限元分析程序。 基于渐进算法,考虑了几何非线性条件的有限元的程序,分析了湖北省恩施市的Nannidu Arch Bridge的Rib-Hoisting施工过程。 考虑非线性效果的计算值非常接近测量值。

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