An air chamber and a method, device, equipment and medium for evaluating performance of the air chamber
By arranging air chambers at intervals and solving the governing equations of the tunnel and air chambers using the method of characteristics, the problems of insufficient accuracy and high cost of air chamber models in existing technologies have been solved, enabling accurate assessment and efficient mitigation of micro-pressure waves on high-speed trains.
Patent Information
- Application Number
- CN202610543475.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-22
- Publication Date
- 2026-07-17
AI Technical Summary
The lumped parameter model of the air chamber in the existing technology fails to accurately simulate the high amplitude and large gradient compression wave generated by high-speed trains. Moreover, the air chamber array method of continuous arrangement or only arrangement upstream of the tunnel exit is costly, prone to blockage, and affects the stability of the mitigation effect.
By employing an intermittent arrangement of air chambers and combining the principles of mass and momentum conservation, the governing equations for the tunnel and air chambers are established. These equations are then converted into ordinary differential equations using the method of characteristics, and coupled equations are established and solved to accurately evaluate the mitigation effectiveness of the air chambers against micro-pressure waves.
It significantly improves the accuracy of evaluating the mitigation effect of micro-pressure waves on high-speed trains, reduces engineering costs, reduces the number of air chambers, and improves the stability of mitigation effectiveness, making it suitable for high-speed train operating environments.
Smart Images
Figure CN122413533A_ABST