临时加撑的时效性及预加力等级对地下连续墙侧移抑制的优化设计研究  

Research on the Optimization Design of Temporary Bracing Timeliness and Preload Levels for Suppressing Lateral Displacement in Diaphragm Walls

作　　者：张恒 王彦朋 高峰 聂晓梅 ZHANG Heng;WANG Yanpeng;GAO Feng;NIE Xiaomei(School of Architecture and Surveying Engineering,Shanxi Datong University,Datong Shanxi,037009)

机构地区：[1]山西大同大学建筑与测绘工程学院,山西大同037009

出　　处：《山西大同大学学报(自然科学版)》2025年第2期88-94,共7页Journal of Shanxi Datong University(Natural Science Edition)

基　　金：山西大同大学基础青年科研基金项目[2022Q35]。

摘　　要：以某地铁车站深基坑工程为背景,研究了基坑施工过程中临时加撑措施对地下连续墙水平位移的抑制规律,并利用ABAQUS建立有限元模型对深基坑施工过程中围护结构出现侧移预警后采取临时加撑措施的时效性及不同预加力等级进行模拟计算。研究表明:在深基坑施工过程中对有侧移预警征兆的地下连续墙提前加装预加力钢支撑干预,相较于其出现侧移预警后再加装钢支撑有更好的控制变形效果,能更有效地减少深基坑工程围护结构失效的概率。研究成果对深基坑围护结构抗侧移变形控制技术发展与施工提供了有益参考。This article,based on a deep foundation pit project at a subway station,investigates the inhibitory effects of temporary bracing measures on the lateral displacement of diaphragm walls during the construction process.A finite element model was developed using the ABAQUS for simulating and calculating the timeliness and different preload levels of implementing temporary bracing measures following lateral displacement warnings in the retaining structures during the construction of deep foundation pits.Research findings indicate that in the process of deep foundation pit construction,the intervention of preloaded steel bracing in advance for diaphragm walls with early warning signs of lateral movement has a better deformation control effect compared to adding steel bracing after the warning.This approach more effectively reduces the likelihood of retaining structure failure in deep foundation pit projects.The research findings offer valuable references for the development and construction of anti-lateral deformation control technologies in deep foundation pit retaining structures.

关 键 词：深基坑 围护结构 临时加撑 数值模拟 优化分析 

分 类 号：TU473[建筑科学—结构工程]