Analysis & Monitoring of Large Diameter Shield Tunnel Through Existing Old Buildings
Based on Chunfeng Tunnel through existing Datan Building and No.2 and No.3 Customs staff dormitory buildings in Shenzhen,the deformation of these old buildings were analyzed during shield tunnel construction pro-cess by combining numerical analysis with on-site monitoring.The main impact area scope and settlement deforma-tion volume were discussed.The research results show that the numerical analysis can better reflect the impact;The field monitoring results show that the impact area of shield tunneling on the settlement(uplift)of buildings is about 40 m before and behind the buildings after the reinforcement of the sleeve raft pipe grouting stratum.The maximum settlement(uplift)value meets the requirements of the control value.That sleeve valve pipe pre-grouting reinforce-ment has obvious control effect on pile displacement and building group settlement.
shield tunnelingnumerical simulationon site monitoringgrouting reinforcementpile foundation
国家科技期刊平台
NSTL
万方数据
维普
