Bridge crossing train overturning risk assessment method based on mode superposition method

Abstract

The invention discloses a bridge crossing train overturning risk assessment method based on a mode superposition method. The method comprises the following steps that: establishing a train system equation of motion, establishing a bridge system equation of motion on the basis of the mode superposition method, establishing a simplified wheeltrack contact model, and establishing a train-bridge system integral equation of motion. On the basis of the simplified wheeltrack contact model, the mutual acting force of the wheeltrack can prevent from being iteratively solved, and a basis is provided forthe equation of motion of a combined train system and bridge system; the train-bridge system integral equation of motion can prevent from separating the iterative solving of the equation of motion ofthe combined train system and bridge system, the synchronous solving of a train and bridge response is realized, and train-bridge system response calculation efficiency is improved. By use of the method, the calculation amount of train-bridge system response analysis under an axial wind function is effectively reduced, and a bridge crossing train overturning risk can be quickly evaluated.

Description

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AI Technical Summary

Benefits of technology

This patented technology improves upon current methods by reducing the complexity involved in calculating the movement equations associated with vehicles' axles during normal operation without requiring multiple calculations or recalculation steps. It also simplifies the structure of the wheels used within each carrier frame, resulting in improved safety performance while minimizing weight penalties compared to traditional designs. Overall this results in more efficient use of space inside cars (carriers) due to its ability to accurately predict how well it will behave after being hit from an impact).

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the design of highway systems that require high levels of road traffic while also reducing costs associated therewith. Specifically, it addresses how these systems should work together effectively without causing excessive noise during operation. Additionally, considering the importance of ensuring proper joint connections between components like rails and vehicles helps prevent damage from external forces caused by waves hitting roads when passing across them. Overall, the goal is to improve the performance and efficiency of transportation networks within urban environments where heavy hazards exist.

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