摘要
为研究地铁盾构隧道侧穿对邻近桥梁桩基的影响,采用midas GTS NX有限元数值分析软件,模拟盾构隧道开挖实际施工工况,分析桥梁桩基在盾构掘进过程中的变形情况。结果表明,软弱地层中区间隧道施工对邻近桥梁的变形有一定影响,桥梁最大竖向变形为4.25 mm,最大水平变形为2.19 mm,相邻墩台沉降差值2.39mm,数值计算与现场实测数据基本一致,桥梁结构变形满足控制要求。
In order to research the impact of subway shield tunnel construction on adjacent bridge pile foundations,Mi-das GTS NX finite element numerical analysis software was used to simulate the actual construction conditions of shield tunnel excavation and analyze the deformation of bridge pile foundations during shield tunneling.The results show that the construction of intermediate tunnels in weak strata has a certain impact on the deforma-tion of adjacent bridges.The maximum vertical deformation of the bridge is 4.25 mm,the maximum horizontal deformation is 2.19 mm,and the settlement difference between adjacent piers and abutments is 2.39 mm.The numerical calculation is basically consistent with the on-site measured data,and the deformation of the bridge structure meets the control requirements.
作者
李建强
于祺
张家威
LI Jianqiang;YU Qi;ZHANG Jiawei(Tianjin Binhai New Area Rail Transit Investment&Development Co.Ltd.,Tianjin 300450,China;Tianjin Municipal Engineering Design&Research Institute Co.Ltd.,Tianjin 300392,China)
出处
《天津建设科技》
2025年第2期25-28,共4页
Tianjin Construction Science and Technology
作者简介
李建强(1979-),男,高级工程师,从事地铁建设管理工作。
