深基坑开挖卸荷对邻近隧道变形影响及伺服控制效果分析
THE INFLUENCE OF DEEP FOUNDATION PIT EXCAVATION UNLOADING ON ADJACENT TUNNEL DEFORMATION AND THE ANALYSIS OF SERVO CONTROL EFFECT
何佳 1逯菲菲 1程李 1田磊1
作者信息
- 1. 北京华科软科技有限公司,北京 100048
- 折叠
摘要
采用基于有限元方法的数字化模型准确模拟并分析地下基坑有无伺服控制情况下对坑外隧道变形的影响.研究结果表明,增设伺服控制后,隧道的变形减小,整体的水平位移和竖向位移均显著降低,其中最大水平位移值减小55.5％,最大竖向位移值减小了56％,通过轴力伺服系统能实现对围护结构侧向变形的精细化主动控制.
Abstract
This paper accurately simulates and analyzes the influence of the underground foundation pit on the out-of-pit tunnel deformation with and without the servo control by digital model based on finite element method.The results show that after adding servo control,the deformation of the tunnel is reduced,and the overall horizontal and vertical displacements are significantly reduced,in which the maximum horizontal displacement value is reduced by 55.5％and the maximum vertical displacement value is reduced by 56％,and the axial servo system can realize the fine active control of lateral deformation of the enclosure structure.
关键词
深基坑/隧道变形/有限元模型/伺服控制Key words
deep foundation pit/tunnel deformation/finite element model/servo control引用本文复制引用
出版年
2024
NETL
NSTL
万方数据