论文部分内容阅读
结合某海堤与高速公路高架桥相互交叉(叠交)可能产生的一系列问题,运用三维非线性有限元方法对海堤和高架桥交叉段及其地基进行数值模拟。针对两种不同的施工工序进行了计算分析,研究了不同施工工序下两工程交叉段内海堤施工对高架桥桥桩基础应力变形的影响。研究表明,对先施工桥梁后施工海堤的方案,桥桩内会产生较大的应力和侧向位移,不宜实施;而对海堤施工完成后再修建桥梁的施工方案,桥桩基础的应力得到了很好地改善,其侧向位移也显著减小。海堤和高架桥的施工工序安排对桥梁桩基础的应力变形有重要影响,必须合理选择,优化设计。研究成果可为类似桥堤交汇工程施工组织计划提供科学地指导。
Combined with a series of problems that may occur when a seawall and highway viaduct cross each other, the three-dimensional nonlinear finite element method is used to simulate the cross section of the seawall and viaduct and its foundation. According to the calculation and analysis of two different construction procedures, the influence of the seawall construction on the stress and deformation of the viaduct and bridge pile foundation in the cross sections of the two projects under different construction procedures was studied. The research shows that for the first construction of the seawall after the construction of the bridge, large stress and lateral displacement will occur in the bridge pile, so it is not suitable to implement it. However, the construction plan of the bridge after the construction of the sea wall is completed, the stress of the bridge pile foundation Has been well improved, its lateral displacement is also significantly reduced. The construction procedures of seawall and viaduct have an important influence on the stress and deformation of the bridge pile foundation, and must be properly selected and optimized. The research results can provide scientific guidance for the similar bridge construction project organization.