Dynamic simulation test system for train running safety on railway bridge under earthquake

Abstract

The invention discloses a dynamic simulation test system for ensuring running safety of a train on a railway bridge under an earthquake. The dynamic simulation test system comprises a bridge model and a train model, wherein a supporting frame component for supporting the bridge model and adjusting an inclination angle and a horizontal position of the bridge model is arranged at the bottom of the bridge model; track boards are paved on the bridge surface of the bridge model; train tracks for guiding a running route of the train model and central tracks for preventing the train model from falling off are paved on the track boards; the train tracks are parallel to the central tracks; the bridge model comprises a first supporting section for adjusting a preset speed of the train model through the inclination angle, a test section for performing a train-bridge coupling vibration test and a second supporting section for stopping the running of the train model according to the inclination angle; the first supporting section and the second supporting section are respectively connected to two ends of the test section. The weak action of the bridge, which is caused by the upper train, and strong action of bridge vibration, which is caused by a vibration table, are mutually coupled to realize a train and earthquake mixing simulation system.

Description

technical field [0001] The invention relates to the technical field of train simulators on railway bridges, in particular to a dynamic simulation test system for trains running safely under earthquake action. Background technique [0002] Although my country's railway industry started late, it has developed rapidly, and now it ranks among the top in the world in terms of total mileage and operating speed. Due to my country's vast territory and complex geological conditions, railways inevitably cross many harsh geographical areas such as mountains, valleys, rivers and lakes, so bridges account for a large proportion of railway lines, especially in recent years for high-speed railway lines. In order to meet the requirements of track smoothness and stability, high-speed railways often use viaducts for several kilometers or even more than ten kilometers, which makes it very likely that trains will be on the bridge when an earthquake occurs. Train derailment or overturning accid...

AI Technical Summary

Problems solved by technology

The research on train running stability and vehicle-bridge coupling vibration under earthquake is still limited to theoretical analysis and numerical simulation, lack of experimental verification, the main reason is that there are few related test equipment and test technology

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