高压旋喷桩技术应用于坑底加固的实效研究  

EFFECTIVE STUDY ON THE APPLICATION OF HIGH PRESSURE JET GROUTING PILE TECHNOLOGY IN PIT BOTTOM REINFORCEMENT

作　　者：朱煜卿 马春涛 吴兴昌 张林华 王宗生 李森 Zhu Yu-qing;Ma Chun-tao;Wu Xing-chang;Zhang Lin-hua;Wang Zong-sheng;Li Sen

机构地区：[1]中建二局第一建筑工程有限公司,北京100023

出　　处：《建筑技术开发》2025年第2期148-150,共3页Building Technology Development

摘　　要：为有效应对深基坑工程中出现的沉降挑战,以玉环万达广场的大型商业综合体建筑为例,采用高压旋喷法技术进行坑底加固处理。首先通过坑底加固设计计算确定桩长为3.5m、桩径0.55m、桩间距为1.124 m,加固区域总共布置64根。然后从钻机就位、钻孔施工、灰浆制备及旋转喷浆对高压旋喷桩施工工艺流程进行全面的分析。最后对该建筑项目的沉降进行了监测,对比两个季度的数据得出高压旋喷桩在深基坑工程中的加固效果显著。这一系统性的监测与分析流程,旨在全面评估高压旋喷法的实施效果,为类似工程提供宝贵的经验参考。In order to effectively address the settlement challenges in deep foundation pit engineering,this project takes the large commercial complex building of Yuhuan Wanda Plaza as an example and uses high-pressure rotary spraying technology to reinforce the bottom of the pit.Firstly,the pile length is determined to be 3.5 meters,the pile diameter is 0.55 meters,and the pile spacing is 1.124 meters through the bottom reinforcement design calculation.A total of 64 piles are arranged in the reinforcement area.Then,a comprehensive analysis is conducted on the construction process of high-pressure rotary jet grouting piles,including the positioning of the drilling rig,drilling construction,mortar preparation,and rotary spraying.Finally,the settlement of the construction project was monitored,and the data from two quarters were compared to show that the high-pressure rotary jet grouting pile has a significant reinforcement effect in deep foundation pit engineering.This systematic monitoring and analysis process aims to comprehensively evaluate the implementation effect of high-pressure rotary spray method and provide valuable experience reference for similar projects.

关 键 词：商业综合体 高压旋喷桩 坑底加固设计 

分 类 号：TU712.3[建筑科学—建筑技术科学]