Railway T-beam disease influence assessment method and system, terminal equipment and readable storage medium

Abstract

The invention discloses a railway T-beam disease influence assessment method and system and a readable storage medium, and the method comprises the following steps: S1, constructing a spatial vibration analysis model of a train-track-bridge system, and introducing a bridge disease state into the spatial vibration analysis model; S2, performing simulation based on the spatial vibration analysis model into which the disease state is introduced to obtain a [sigma]p-V relationship and a [sigma]c-V relationship; and S3, based on the [sigma]p-V relation, the [sigma]c-V relation and a system transverse vibration stability discrimination criterion, whether system transverse vibration is stable or not is recognized, and if the system transverse vibration is stable, the train runs safely, and derailment does not occur. Meanwhile, the transverse vibration instability critical vehicle speed Vcr and the allowable limit vehicle speed VL are obtained based on the formula that [delta]sigma c = [delta]sigma p, by means of the method, whether the diseases can influence the driving safety or even cause derailment or not can be effectively analyzed, and the derailment-resistant safety degree of the train can be further obtained.

Description

technical field [0001] The invention belongs to the technical field of train safety control, and in particular relates to a railway T-beam disease impact assessment method, system, terminal equipment and readable storage medium. Background technique [0002] Bridges are an important infrastructure for heavy-haul railways, and the double-piece simply supported prestressed concrete T-girder bridge is a common bridge type for heavy-haul railways. As the axle load of freight trains increases, the number of marshalling vehicles increases, the speed of trains increases, the density of trains increases, and they are affected by complex environments such as temperature and rain, the number of existing bridge diseases increases significantly, and the speed of deterioration accelerates. Concrete girders on many railway trunk lines in my country have problems such as concrete beam cracking, increased deflection, and intensified lateral vibration. In the state of disease, the lateral am...

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Problems solved by technology

[0011] The purpose of the present invention is to address the existing situation of lacking the influence of train derailment information under the state of bridge disease. The present invention provides a railway T-beam disease impact assessment method, system, terminal equipment and readable storage medium. The method will bridge disease The state is introduced into the constructed spatial vibration analysis model of the train-track-bridge system and simulated to obtain σ p -V relation and σ c -V relationship, while based on σ p -V relation and σ c The relationship between -V and whether the lateral vibration of the system is stable can be known from the stochastic analysis theory of train derailment energy. As long as the lateral vibration of the freight train-track-bridge system is stable, the safe operation of the freight train can be controlled. Therefore, the method can effectively respond derailment information of trains on the bridge under disease conditions; at the same time, σ c When the train derails, the train-track-bridge system lateral vibration limit resistance does work, which is one of the indicators of the train's anti-derailment safety degree, and the method can be used to effectively know the impact of the disease on the train anti-derailment safety index σ on the bridge c To provide theoretical basis and basic data for formulating rectification measures and proposals with the function of preventing train derailment, so as to ensure the safety and stability of trains on heavy-duty railway bridges

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