钢支撑伺服系统对基坑围护结构水平位移控制的技术研究

Technical Research on Horizontal Displacement Control of Foundation Pit Enclosure by Steel Support Servo System

在地铁设计过程中,对于如何保证深基坑施工安全一直是一项重要研究内容,尤其是在中心城区范围环境复杂,施工过程中对基坑变形有较高的控制要求。本文以长沙地铁6号线工程花桥站主体基坑为例,针对主体基坑临近220kV高压线塔开挖过程中伺服液压系统的运用,通过限元数值模拟结果与实测数据的对比分析,结果表明采用钢支撑伺服系统对于基坑变形有较好的控制效果,能够显著减小围护结构变形及对周边建构筑物的影响。

In the process of subway design,how to ensure the safety of deep foundation pit construction has always been an important research content,especially in the complex environment of the central urban area,and there are high control requirements for the foundation pit deformation during the construction process.This paper takes the main foundation pit of Huaqiao Station of Changsha Metro Line 6 Project as an example,aiming at the application of the servo hydraulic system in the excavation process of the main foundation pit near the 220kV high-voltage line tower,through the comparative analysis of the finite element numerical simulation results and the measured data,the results show that The steel support servo system has a good control effect on the deformation of the foundation pit,and can significantly reduce the deformation of the envelope structure and the impact on the surrounding buildings.