摘要
排水管道顶管施工控制不当,导致老桥条形基础出现不均匀沉降。分析了老桥条形基础的安全性,考虑土体损失对条形基础沉降的影响。采用平面应变有限元模型计算顶管施工引起的条形基础的沉降,并提出了地基加固处理措施。加固后条形基础沉降得到有效控制,保证了原桥梁基础的稳定性。
Differential settlement occurred in strip foundation of old bridge due to improper construction of drainage pipeline pipe thrusting. Security of the strip foundation of old bridge was analyzed considering the influence of soil slip on strip foundation. Plane strain finite element model is used to calculate the strip foundation settlement caused by drainage pipeline pipe thrusting construction. A groundsill consolidation method is proposed and strip foundation settlement is under control after groundsill consolidation. The stability of the old bridge is guaranteed.
出处
《工程建设与设计》
2009年第10期85-89,共5页
Construction & Design for Engineering
关键词
顶管施工
土体损失
有限元方法
不均匀沉降
地基
加固
pipe thrusting
ground loss
finite element method
differential settlement
groundsill consolidation
