高压旋喷桩施工技术在道路路基加固中的应用与效果评估

Application and Effect Evaluation of High Pressure Rotary Jet Pile Construction Technology in Road Subgrade Reinforcement

本文以G6京藏高速公路刘寨柯至响泉口段路基为加固对象,使用高压旋喷桩施工技术的具体操作方法与施工要点信息,并使用单桩承载力这一指标,评估高压旋喷桩施工技术在道路路基加固中应用效果。评估结果显示:高压旋喷桩施工技术使用后,G6京藏高速公路刘寨柯至响泉口段路基单桩承载能力、单桩无侧限抗压强度均合格,说明高压旋喷桩施工技术在道路路基加固中应用效果显著。

This article takes the roadbed of Liuzhaike Xiangquankou section of G6 Beijing Tibet Expressway as the reinforcement object,and uses the specific operation method and construction key information of high pressure rotary jet pile construction technology.The single pile bearing capacity was used as an indicator to evaluate the application effect of high-pressure rotary jet pile construction technology in road subgrade reinforcement.The evaluation results show that after the use of high pressure rotary jet pile construction technology,the single pile bearing capacity and unconfined com‐pressive strength of the subgrade from Liuzhaike to Xiangquankou section of G6 Beijing Tibet Expressway are qualified,indicating that the application effect of high-pressure rotary jet pile construction technology in road subgrade reinforcement is significant.