Emergency evacuation simulation method based on multi-evacuation factor non-uniform floor field model

Abstract

The invention discloses an emergency evacuation simulation method based on a multi-evacuation-factor non-uniform floor field model, and the method comprises the steps: taking an overlapping area of a circle with an exit as a circle center and an integral multiple of the width of the exit as a radius, and each cell as a basis for setting a field value of a static floor field; restriction factors are introduced to reflect the relation of influence factors between a dynamic floor field and a static floor field, floor field value setting is expanded to a three-dimensional space, static floor field value setting methods under four different evacuation scenes are displayed, an improvement thought is provided for irrationality of static floor field value setting, and the scene application range of a floor field model is expanded. An evacuation simulation experiment is carried out through MATLAB, a result shows that the sensitivity of the model to a guiding effect is obviously superior to that of a typical floor field model, and an evacuation simulation result is beneficial to providing support for formulating an evacuation induction strategy for a typical emergency scene.

Description

technical field [0001] The invention relates to the field of emergency evacuation modeling and simulation, in particular to an emergency evacuation simulation method based on a non-uniform floor field model with multiple evacuation factors. Background technique [0002] With the acceleration of urbanization, the density of urban people gradually increases, and large-scale crowded public places increase. In order to ensure the rapid and efficient evacuation of crowds in emergencies, reduce casualties, and reduce economic and property losses, emergency evacuation and simulation of crowds in emergencies has gradually become an important research content. [0003] In order to approach the actual evacuation on site, objectively present the effect of crowd evacuation, and improve the feasibility of calculation, experts and scholars have constructed many evacuation models. Generally speaking, emergency evacuation models are mainly divided into macro models and micro models. Among ...

AI Technical Summary

Problems solved by technology

[0004] First, the setting considerations for the field value of the static floor are too single, and other environmental factors that affect the efficiency of pedestrian evacuation are rarely considered

[0005] Second, the setting method of the field value of the existing static floor does not meet the standard of the uniqueness of the pedestrian movement path, and the field value set in different ways for a single cell has different values

[0006] Third, there is a relationship between the factors that affect the values ​​of the dynamic and static floor fields, but the coefficients between the existing dynamic and static floor fields lack connection, resulting in a lack of systematicness and integrity in the model

[0007] Fourth, the application scenarios of the existing floor field models are limited to two-dimensional planes, which limits the application range of the model

[0008] Therefore, there is a lack of a comprehensive, comprehensive and accurate floor field model that can objectively quantify the factors affecting evacuation in multiple evacuation scenarios, and provide a rationalized field value calculation and setting method

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