摘要
文章探讨了某地下室一层软土基坑复合土钉支护结构失稳的原因,并提出了处理措施。通过采用有限差分数值软件模拟复合土钉支护结构,运用软件内置的强度折减程序,计算了基坑失稳及处理后的安全系数,并与实际工程进行对比分析。借助有限差分数值软件在土钉、桩、壳体等结构单元分析方面的优势,提取了基坑失稳前后及处理后各单元及单元节点的力学参数并进行对比。研究结果表明,邻近基坑边的工程灌注桩能够有效减少土钉支护结构的变形并提升其稳定性。
The causes for the instability of a composite soil nailing support structure in a soft clay foundation pit for a certain first basement are analyzed,and the remedial measures are proposed.The paper simulated the composite soil nail support structure with finite difference numerical software,used the software’s built-in strength reduction program to calculate the safety factors for the excavation pit before and after stabilization,and then compared and analyzed with actual engineering data.Leveraging the advantages of finite difference numerical software in analyzing structural units such as soil nails,piles,and shells,the mechanical parameters of each unit and node before and after the failure of the excavation pit,as well as after the remedial measures,were extracted and compared.The research results indicate that the engineering cast-in-place piles near the edge of the excavation pit can effectively reduce the deformation of the soil nail support structure and enhance its stability.
出处
《城市建筑》
2025年第20期182-186,共5页
Urbanism and Architecture
关键词
复合土钉支护结构
基坑
强度折减法
composite soil nailing support structure
foundation pit
strength discount method
