Design method for improving the fire safety performance of underground commercial facilities supporting transportation buildings

Abstract

The invention relates to a design method for improving the fire safety performance of underground commercial facilities supporting traffic buildings, which belongs to the technical field of disaster prevention and mitigation of building structures and protection, and includes sunken squares, refuge walkways and underground commercial facilities. In the square, the two ends of the refuge walkway are connected to the sunken square. The underground centralized commercial area is divided into different commercial areas by the refuge corridor in the sunken square; the commercial area and the refuge corridor are separated by a firewall and a smoke-proof front room. The commercial facilities in each commercial area are divided into fire compartments according to their functions. There are no less than 2 safety exits in each fire compartment, which can lead to sunken squares or different refuge walkways, or directly evacuate to the outdoor area through the evacuation stairwell. The central part of the underground centralized commercial area forms evacuation passages at both ends that can lead to the outdoors, sunken squares or refuge walkways.

Description

technical field [0001] The invention relates to a design method for improving the fire safety performance of underground commercial facilities supporting traffic buildings, and belongs to the technical field of disaster prevention, reduction and protection of building structures. Background technique [0002] As the pace of urban construction continues to accelerate, the development and utilization of underground space is gradually increasing. The scale of the underground commercial area is getting bigger and bigger, and the total construction area even reaches tens of thousands of square meters. The smoke exhaust and fire fighting and rescue conditions in the underground space are relatively poor, and the fire load of commercial facilities is relatively high. Once a disaster such as fire occurs, it is easy to cause heavy casualties and property losses. [0003] The density of people in commercial facilities is high, and a large number of people need to be evacuated in case...

AI Technical Summary

Problems solved by technology

Because the above-ground space may have functions such as large-scale transportation and comprehensive development, the evacuation stairwells leading to the outdoors in the underground commercial area are often difficult to meet the minimum width requirements for evacuation, or barely meet the code requirements

And limited by the ground design conditions, the scope of setting up a sunken plaza to solve the problem of evacuation is very limited

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