摘要
以实际深层输水隧洞工程的超深大直径竖井为研究背景,采用数值模拟的方法,对地连墙和灌注桩两种竖井基坑支护结构进行比选研究。通过模拟竖井基坑不同支护结构在关键工序施工和正常运行条件下的应力应变特性,对比分析其可靠度和安全性,为竖井基坑的支护设计提供科学依据。数值模拟试验结果表明,地连墙支护结构具备更好的变形和受力特性,拟作为推荐方案。
Taking a super-deep large-diameter shaft in a actual deep underground water conveyance tunnel project as the research background,the method of numerical simulation is used to compare two supporting structures of continuous concrete wall and bored pile for the shaft foundation pit.By simulating the stress-strain characteristics of different supporting structure of the shaft foundation under key construction process and normal operation condition,the reliability and safety of two schemes are compared and analyzed to provide a scientific basis for the supporting structure design of shaft foundation pit.The simulation results show that the continuous concrete wall supporting structure has better deformation and stress-strain characteristics and is proposed as the recommended design scheme.
作者
冯艳
罗毅
FENG Yan;LUO Yi(PowerChina Zhongnan Engineering Corporation Limited,Changsha 410014,Hunan,China)
出处
《水力发电》
CAS
2021年第10期56-60,共5页
Water Power
关键词
超深大直径竖井
基坑
支护方案
地连墙
灌注桩
应力应变
数值模拟
super-deep large-diameter shaft
foundation pit
supporting
continuous concrete wall
bored pile
stress-strain
numerical simulation
