高压旋喷桩在桥梁基础加固中的设计应用

摘要

为设计高压旋喷桩加固桥梁基础,分析了高压旋喷桩的成桩机理,结合工程特点,对旋喷桩直径、长度、数量、布置及相关参数进行设计,高压旋喷桩适用范围广,对周围地基的扰动小,成桩结构形式灵活多样,施工方便,造价较低,因此高压旋喷桩在现有桥梁基础加固中应用越来越广泛。%In order to design high-pressure jet grouting piles for foundation reinforcement of bridges,in forming process of high-pressure jet grouting piles were analysised.In combination with the engineering characteristics,the diameter,length,quantity,arrangements and relevant parameters of high-pressure jet grouting piles had been designed.Because of its wide scope of application,small-disturbance for surrounding foundation,flexible structural pattern,easy construction and lower cost,the application of high-pressure jet grouting piles for foundation reinforcement of bridges become more and more widely.