宁台温高速公路软基段桥梁边孔桥墩位移问题分析与处理

胡向前¹   冯  钟²   裴胜利²

摘要:高速公路软基段桥梁边孔墩位移的工程案例并不多见，而宁台温高速公路温州乐清段采用塑料排水板处理软基段的部分桥梁边孔墩出现了较为显著的位移。本文通过对边孔墩位移的监测和路基沉降观测的数据建立了路基沉降和边孔墩位移的关系曲线，辅之以对软基特性和桩基受力的分析，得出边孔墩位移的原因，并提出问题的处理方案。

关键词：塑板桩、软基、路基沉降、桥墩位移

The analysis and solution of bridge pier moving problem in N.T.W expressway soft clay ground

Hu Xiang-qian  Feng Zhong  Pei Sheng-li

Abstract:  Bridge pier moving is not a popular problem in expressway with soft clay ground，but such  problem was found in Ning taiwen expressway. Using original data of roadbed subsidence and bridge pier moving in Ning taiwen expressway, their relative curve is created.   With the addition of analyzing the characteristics of soft clay ground and the force acting on pile foundation. The reasons of bridge pier moving are found and suggestions to solve the problem are presented.

key word：plastic drain bar、soft clay ground、roadbed subsidence 、bridge pier moving