Analysis on the Influence of Undercutting Subway Station Blasting Construction on the Stability of Existing Large Building Structure
In order to effectively reduce the disturbance of blasting construction of urban undercutting subway station on existing large buildings and ensure the safety of tunnel construction and adjacent buildings,a three-dimensional numerical model of tunnel-surrounding rock-structure was established by using Midas-GTS finite element software,and the influence of blasting vibration on the stability of Qingdao Conson Gymnasium was evaluated.At the same time,the field monitoring data were compared with the numerical simulation results.The maximum vibration velocity of field monitoring and numerical simulation meets the requirements of the safe allowable vibration velocity range proposed in the specification.It shows that the three-dimensional numerical model constructed in this paper is reasonable,and the design parameters adopted meet the design requirements and engineering practice,which can provide reference for similar engineering in the future.
shallow-buried tunnelsoft and hard uneven geologynumerical simulationblasting vibrationexisting large buildingsstructural stability
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