基于新型胶凝材料预加固的黏土基坑开挖扰动效应数值模拟分析  

Numerical Simulation Analysis of Disturbance Effects During Excavation in Clay Soil Based on New Cementitious Material Pre-reinforcement

作　　者：杨亚楠 YANG Ya-nan(China Railway 15th Bureau Group Underground Engineering Co.,Ltd.,Yangzhou 225000,China)

机构地区：[1]中铁十五局集团地下工程有限公司,扬州225000

出　　处：《价值工程》2025年第11期82-84,共3页Value Engineering

基　　金：“国家重点研发计划项目(编号:2023YFC3707804)资助”;“中国铁建股份有限公司科技重大专项(2023-A02)”。

摘　　要：为掌握杭州黏土地区基坑开挖引起的地连墙位移及地表沉降响应规律,结合该地区某在建基坑项目监测数据与数值模拟方法,针对该类型地区基坑开挖扰动效应展开研究。研究发现:通过增大地连墙体及支撑的强度,可有效增加对地连墙水平位移及地表沉降的控制;围护结构强度增加所带来的变形控制效果存在边际递减效应,建议地连墙体和支撑的弹性模量取值范围分别为30~35GPa和35~40GPa。In order to clarify the response law of retaining wall displacement and ground settlement caused by excavation in clay soil areas in Hangzhou,combined with monitoring data and numerical simulation methods of a foundation pit project under construction in the region,this study focuses on the disturbance effects of excavation in this area.Research has found that increasing the strength of retaining walls and supports can effectively increase control over horizontal displacement of retaining walls and surface settlement.The deformation control effect caused by the increase in the strength of the structure has a marginal decreasing effect.It is recommended that the elastic modulus values of the retaining wall and support be in the range of 30~35GPa and 35~40GPa,respectively.

关 键 词：黏土地区 监测数据 开挖扰动 数值模拟 

分 类 号：U451[建筑科学—桥梁与隧道工程]