Method for evaluating collapse risk of building in fire

Abstract

The invention discloses a method for evaluating the collapse risk of a building in fire, and relates to the field of constructions. The method for evaluating the collapse risk of the building in the fire disaster comprises the following steps: S10, establishing an equal-proportion three-dimensional model according to actual building data, establishing a fire behavior database, and giving annotation on the three-dimensional model; step S20, carrying out fire simulation analysis, carrying out different assignment on basic data such as an ignition point and an ignition degree of the building, continuously carrying out repeated tests, and establishing a test database; step S30, analyzing the fire test data to obtain weak positions of the building, and sorting the weak positions according to weak degrees; and S40, evaluating the fire risk of the building, and outputting evaluation. The collapse risks of the building in different fire scenes are evaluated and sorted, important reference can be provided for related units, and corresponding protection measures are taken step by step according to the risk degree.

Description

Technical field [0001] The present invention relates to building, and in particular relates to a building method for assessing the risk of collapse during a fire. Background technique [0002] With the substantial increase in the level of urbanization in our country, but also the rapid development of the construction industry, building structure and complicated as well as a variety of new technologies, new technology features have appeared, making the building fire - causing a significant increase. Meanwhile, after the fire also could lead to the collapse of the building, which bring huge risks to personnel and rescue workers trapped, so the need for the buildings collapsed fire risk assessment. [0003] The existing building fire risk assessment collapse little attention to the weak parts in the building, these areas are the most vulnerable to damage when the building is on fire places, collapse is very likely to start from a weak position. Hence the urgent need for building col...

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Problems solved by technology

At the same time, the fire may also lead to the collapse of the building, which brings great risks to the trapped people and rescuers. Therefore, it is necessary to conduct a fire collapse risk assessment of the building

[0003] However, the existing fire collapse risk assessment of buildings rarely pays attention to the weak parts of the building. These parts are the most vulnerable parts of the building when a fire occurs, and the collapse is likely to start from the weak position.

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