TRD试成墙的监测和数据分析方法研究  

Research on Monitoring and Data Analysis Method of TRD Wall

作　　者：俞迪飞 YU Difei(China Railway SIYUAN Survey and Design Group Co.,Ltd Wuhan 430063)

机构地区：[1]中铁第四勘察设计院集团有限公司勘察院,武汉430063

出　　处：《铁道勘测与设计》2023年第4期16-19,共4页Railway Survey and Design

摘　　要：近年来各大城市内基坑工程的数量不断增多,难度和风险也越来越高,因此在使用TRD工法进行基坑支护施工时会在非原位进行成墙试验,并对非原位墙施工时的土体结构进行监测,然后根据监测结果指导原位墙施工。本文以某位于城市闹市区且紧邻地铁的深基坑项目的TRD试成墙监测工作为例,阐述了该项目的基本工况、试成墙的监测内容和监测方法,经过墙体切割和成墙阶段的土体结构监测,获得了土体分层沉降、土体侧向位移和孔隙水压力监测数据,并对监测结果进行了分析,本文的监测方法和监测结果对同类项目具有一定的参考意义。In recent years,the number of foundation pit projects in major cities is increasing,and the difficulty and risk are also increasing.Therefore,when using the TRD method to carry out foundation pit support construction,the wall forming test will be carried out ex-situ,and the soil structure during the construction of the ex-situ wall will be monitored,and then the in-situ wall construction will be guided according to the monitoring results.Taking the TRD test wall monitoring work of a deep foundation pit project located in the downtown area of the city and close to the subway as an example,this paper describes the basic working conditions of the project,the monitoring contents and monitoring methods of the test wall.Through the stage of wall cutting and wall formation,the monitoring data of soil layer settlement,soil lateral displacement and pore water pressure are obtained,and the monitoring results are analyzed.The monitoring methods and results in this paper have certain reference significance for similar projects.

关 键 词：深基坑 TRD工法 分层沉降 侧向位移 孔隙水压力 

分 类 号：TU7[建筑科学—建筑技术科学]