Numerical Simulation Research on Cover Pressure of Energy Dissipation Wells in Siphon Rainwater Systems of HSR Station Buildings
In certain siphon rainwater inspection wells at high speed railway(HSR)station buildings in China,the covers tend to"dance"during heavy rainfall,leading to significant safety hazards.To address this issue,an investigation was conducted into the problems existing in energy dissipation wells at several HSR station buildings in China.Additionally,construction requirements for energy dissipation wells outlined in current standards were examined.Numerical simulation was conducted using CFD technology to analyze the pressure fluctuations experienced by the covers of siphon rainwater energy dissipation wells within a station building.Furthermore,the influence of air vent measures for energy dissipation wells on the pressure exerted on their covers was analyzed.The simulation results indicate that during intense rainstorms,there is a significant volume of air within the siphon rainwater outlet pipe.Without implementing vent measures for energy dissipation wells,the air accumulates inside,elevating the pressure on well covers and leading to a cover overturning risk.Upon integrating vent measures for energy dissipation wells,the pressure on well covers diminishes,consequently eliminating the risk of cover overturning.
HSR station buildingCFDnumerical simulationsiphon rainwater systemenergy dissipation well
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