Method for improving fireproof performance of vehicle body

Abstract

The invention provides a method for improving the fireproof performance of the vehicle body, comprising the following steps: assuming burning position and burning risk and defining burning damage area of the vehicle body model according to a three-dimensional model of the vehicle body and intensity weak area; utilizing an I-deas intensity finite element to calculate vehicle body distortion amountafter being loaded with predetermined high temperature load in the burning damage area; judging whether the space between lower overhang part and rail surface after the vehicle body deforms satisfiestravelling capacity requirement under safe speed; if not, performing fireproofing treatment on burning damage area of the vehicle body. The invention improves thermal load intensity performance in less computational cost and nonmetallic material expense cost, thus reducing the risk of fire disaster occurrence, and satisfying travelling crane ability; once fire disaster occurs, the passenger evacuating and rescuing time can be gained, thus guaranteeing personal safety and reducing property loss.

Description

technical field [0001] The invention relates to the technical field of car body fire protection for high-speed vehicles, in particular to a method for improving the car body fire performance. Background technique [0002] The technical requirements for fire protection of railway vehicles, EMUs or subway products, such as TB / T3138-2006 technical conditions for flame-retardant materials for rolling stock and UIC564-2, UIC642 International Union of Railways regulations, limit the flame-retardant properties of non-metallic materials, that is, 45° Angle combustion, the method of measuring oxygen index, mainly includes oxygen index, flame retardant requirements and smoke density requirements. However, with only these three indicators, it is difficult to meet the requirements of fire performance during a large fire, especially there is no feasible basis for the fire performance of metal car bodies. That is to say, under the existing technology, once the non-metallic materials in th...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for improving the fireproof performance of the car body, which can solve the problem of preventive fire prevention technical measures taken when the car body itself does not have sufficient strength under thermal load conditions in the prior art, and delay the rapid fire. To avoid the problem of casualties and property losses caused by the non-metallic materials and electrical components in the vehicle, once a fire occurs, the entire vehicle will be burned in a short time, making it impossible to evacuate and escape.

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