多场耦合视角下深基坑降水数值模拟研究进展及模型适用性分析  

Research Progress and Model Applicability Analysis of Numerical Simulation of Deep Foundation Pit Dewatering from the Perspective of Multi-field Coupling

作　　者：汪先国 WANG Xianguo(China Railway Eleventh Bureau Group Co.,Ltd.,Wuhan,Hubei 430079,China)

机构地区：[1]中铁十一局集团有限公司,湖北武汉430079

出　　处：《水利与建筑工程学报》2025年第2期89-97,共9页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学基金青年项目(51309100);河南省科技攻关项目(222102320231)。

摘　　要：数值模拟技术已成为深基坑降水引起周边土体渗流场、应力场变化分析的重要方法。本文在系统收集国内外深基坑降水数值模拟研究相关文献的基础上,详细综述了模拟软件差异、本构模型选取、多场耦合分析的关键技术方法。通过对摩尔-库仑模型、修正剑桥模型、硬化土模型的运算特性差异进行分析,阐述了目前针对降水问题水-土耦合的主流建模方法及边界条件设置机制,以及黏土、砂土、粉土等土体材料的扰动特性差异;归纳了解决地下水迁徙、降水漏斗形成、周边建(构)筑物扰动等不同问题的软件表现特性,提出不同特殊工况的模拟方案。指出目前关于数值模拟在反演求参、与地理信息数据库结合方面的研究成果较少,有必要对该领域广泛开展研究。With the development and deep application of computer technology,numerical simulation technology has become an important way to analyze the changes in the surrounding soil seepage field and stress field caused by deep excavation dewatering.A detailed research progress was provided on the key technical methods for simulating software differences by selecting constitutive models and multi field coupling analysis.This workconcludes the main modeling methods and boundary condition settings for water soil coupling in precipitation problems,as well as the differences in disturbance characteristics of soil materials such as clay,sand,and silt,based on the differences in computational characteristics among the Moore Coulomb model,modified Cambridge model,and hardened soil model.The differences in software performance in solving different problems such as groundwater migration,precipitation funnel formation,and disturbance of surrounding buildings,and proposed simulation schemes for different special working conditions was also summarized.Finally,it is suggested that there are relatively few research results on numerical simulation in inversion and parameter calculation,as well as its integration with geographic information databases.It is suggested to conduct extensive research in this field.

关 键 词：基坑降水 数值模拟 本构模型 渗流场变化 有限元法 

分 类 号：TU433[建筑科学—岩土工程]