盾构法隧道近距离侧穿对桥梁桩基的影响

Influence of construction of side-crossing shield tunnel on adjacent bridge pile foundation

以佛莞城际铁路长隆隧道盾构法近距离侧穿东新高速桥梁桩基工程为例,采用数值仿真对盾构法隧道近距离侧穿高速公路桥梁桩基的影响进行研究。研究表明:采用旋喷隔离桩保护既有桥梁桩基,大幅降低了盾构掘进对桥梁桩基的影响。

Based on the Changlong shield tunnel which is a part of Fo-Guan railway project, the numerical simulation method is used to investigate the influence of side-crossing on the adjacent highway bridge pile foundation at a close range. The research results show that it is an effective method to use jet grouting shelter piles to protect the pile foundation of the highway bridge and greatly reduce the influence of shield tunneling on the pile foundation.