摘要
Abstract
When the shield tunnel passes through the bridge,the construction will cause large surface settlement and stress changes,thus increasing the risk of the construction processand having a certain impact on the safety of the project itself and the bridge along the line.Taking the side-crossing bridge of a shield tunnel of a subway line in Qingdao as the object,the stability of the construction of the side-crossing bridge was evaluated by establishing a three-dimensional finite element model of the shield side-crossing bridge,and the laws of soil displacement,segment deformation,piers and piles were studied in combination with the construction technology of the shield side-crossing bridge.The results show that in the process of double-line tunnel excavation,the vertical and horizontal displacements of surface,segment,bridge pier and bridge pile are relatively small,which meet the requirements of the construction code.The research results can provide reference for the construction of similar shield side-through bridges.关键词
地铁/稳定性分析/数值计算/盾构隧道/桥梁施工Key words
subway/stability analysis/numerical calculation/shield tunnel/bridge construction分类
社会科学
