超大直径盾构隧道穿越桥梁桩基影响研究  

Influence of Super-large Diameter Shield Tunneling under Bridge Pile Foundation

作　　者：刘明高 陈仁东 孙和美 姚晓励 Liu Minggao;Chen Rendong;Sun Hemei;Yao Xiaoli(Beijing General Municipal Engineering Design & Research Institute Co.,Ltd Beijing 100082;School of Civil Engineering,Hunan University,Changsha 410082)

机构地区：[1]北京市市政工程设计研究总院有限公司,北京100082 [2]湖南大学土木工程学院,湖南长沙410082

出　　处：《市政技术》2019年第1期67-71,共5页Journal of Municipal Technology

摘　　要：以深圳春风隧道超大直径盾构掘进穿越春风高架桥桩基项目为背景,通过三维数值模拟分析,研究了盾构掘进参数及地基加固措施对桥梁桩基位移及受力的影响。结果表明,掘进参数(如掘进工作面推力和注浆压力)的改变会对桥梁桩基变形与受力产生不同程度的影响,同时桩基加固能有效减小地表和桩基的沉降与弯矩,但会增大桩基轴力。Based on the project of super large diameter shield tunneling through a bridge pile foundation in Shenzhen,the influence of large diameter shield tunneling parameters and foundation reinforcement measures on the displacement and force of bridge pile foundation is studied by means of a 3-d numerical simulation. The analysis results show that the change of tunneling parameters will have a certain effect on the deformation and force of the bridge pile foundation,and the pile foundation reinforcement can effectively reduce the displacement and bending moment of the ground and pile foundation,but axial force of the pile foundation will be increased.

关 键 词：盾构掘进 桥梁桩基 数值模拟 掘进参数 控制措施 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]