A three-dimensional spreading simulation method of building group fire

A simulation method and technology for building complexes, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as affecting the accuracy of fire simulation results, inability to consider elevation differences, etc., to reduce the possibility and improve the applicability Effect

Active Publication Date: 2019-03-29
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

Two-dimensional fire spread cannot take into account the elevation difference of the terrain where the building is located, which will affect the accuracy of fire simulation results

Method used

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  • A three-dimensional spreading simulation method of building group fire
  • A three-dimensional spreading simulation method of building group fire
  • A three-dimensional spreading simulation method of building group fire

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Embodiment Construction

[0037] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0038] The invention provides a three-dimensional fire spread simulation method for building groups, such as figure 1 As shown, the method includes the following steps:

[0039] Firstly, the indoor fire development model is established, then the three-dimensional fire spread model between buildings is established, and finally the fire spread simulation of buildings is carried out; the indoor fire development model includes the temperature-time curve and the heat release rate-time curve; the three-dimensional fire spread model between buildings Including thermal radiation model, thermal plume model and ignition conditions; building group fire spread simulation simulates the fire spread of building groups by combining the indoor fire development model and ...

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Abstract

The invention provides a three-dimensional spreading simulation method of building group fire, and belongs to the technical field of civil engineering disaster prevention and mitigation. This method firstly establishes the indoor fire development model, then establishes the three-dimensional fire spread model between buildings, and finally simulates the fire spread of buildings. In the indoor firedevelopment model, fire development is divided into four stages: fire, explosion, full development, decay, which are described by temperature and heat release rate curves, and different structural types are described by different curve parameters; The three-dimensional fire spread model is composed of heat radiation model, heat plume model and ignition condition. The calculation of heat radiationand heat plume is based on three-dimensional coordinate system. Fire spread simulation of buildings refers to the combination of indoor fire development model and three-dimensional fire spread modelbetween buildings to simulate the fire spread of buildings. The invention can consider the influence of the three-dimensional terrain on the building fire spreading, gives the spreading influence range, and provides an important decision reference for fire rescue and prevention.

Description

technical field [0001] The invention relates to the technical field of disaster prevention and reduction in civil engineering, in particular to a three-dimensional fire spread simulation method for building groups. Background technique [0002] Buildings are the main places where people produce and live, and they are also places where wealth is highly concentrated. Once a building fire spread accident occurs, it will cause heavy economic losses and casualties. In recent years, there have been many major fire spread accidents in buildings, such as the Dukezong ancient city fire in Shangri-La in 2014, which burned a house area of ​​59,980.66 square meters and caused an economic loss of about 89,839,300 yuan. Building group fire simulation can give the detailed process of fire spread, and according to the simulation results, targeted measures such as fire hazard screening and fire isolation can be carried out to reduce the possibility of large-scale fire spread, which is of gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 许镇薛巧蕊魏炜
Owner UNIV OF SCI & TECH BEIJING
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