长沙捞刀河景观桥施工计算与分析

CALCULATION AND ANALYSIS OF THE CONSTRUCTION OF LAODAO RIVER LANDSCAPE BRIDGE IN CHANGSHA

在捞刀河景观桥施工过程中,钢箱梁及其支架体系是相互作用的一个整体,对整体结构进行计算既能使支架承受的荷载大小及分布更符合实际,又能考虑钢箱梁支架的不均匀沉降对连续钢箱梁内力重分布的影响。采用MIDAS/Gen有限元软件建立整体模型,对钢箱梁及其支架体系进行施工计算分析,然后根据计算分析结果对结构安全性进行评价并给出合理的施工建议。分析结果表明:钢箱梁及其支架体系结构安全。

In the construction of Laodao River landscape bridge,the steel box girder and its support system interact with each other as a whole. Integral calculation method not only obtain the actual value and distribution of the loads of support system,but also considers the impact of uneven settlement of the support on the force of continuous steel box girder. The3 D model was established with the help of the finite element analysis software MIDAS/Gen in order to carry out simulation calcaulation analysis of the steel box girder and its support system. According to the results of calculation analysis,the structural safety was evaluated,and reasonable construction suggestions were proposed. The results showed that the steel box girder and its support system were safe.