杭州江东大桥多段复合竖曲线钢梁顶推施工分析研究与实践

该文以杭州江东大桥为实例,建立有限元分析模型,对多段复合竖曲线连续钢箱梁顶推施工过程进行动态分析,在掌握临时墩反力和钢箱梁内力变化规律的基础上,优化临时墩初始标高设置和临时支座标高调整方案,为设置多段复合竖曲线钢箱梁的顶推施工提供理论指导。

Analysis, Study and Practice of Multi-section Composite Vertical Curve Steel Beam Jacking Construction of Hangzhou Jiangdong Bridge

Taking Hangzhou Jiangdong Bridge as a case,the article sets up the finite element model,and dynamically analyzes the jacking construction process of multi-section composite vertical curve continuous steel box beam. On the basis to master the changing rules of the reaction of the temporary pier and the inner forces of the steel box beam,the article optimizes the scheme for the initial elevation of temporary pier and the elevation adjustment of temporary support so as to provide the theoretical guidance for the jacking construction of multi-section composite vertical curve steel box beam.