Testing device and testing method for fire propagation characteristic for building exterior wall thermal insulation board

Abstract

The invention discloses a testing device and a testing method for fire propagation characteristic for a building exterior wall thermal insulation board. A deformable body is stretched or shortened torealize diverse shapes of a simulated single building, and diverse building wall structures can be rapidly and conveniently constructed, to gather and form a building community; the simulated single building can be rapidly fixed with a bottom platform by location fit of a location bottom seat and a location hole, to realize convenient and fast disassembly and assembly, while accurate and stable location function can be realized for the simulated single building with various sizes and orientations, without generating position shifting under a larger wind speed environment; and the simulated building group modules can also be freely increased and decreased and spliced according to requirements, to construct a test scene of an expected scale, with characteristics of flexibility, convenience,and fastness. The device can be used for large-scale fire propagation performance testing of various complex building communities, and is expected to provide a basis for the improvement of such standards.

Description

technical field [0001] The invention relates to the intersecting fields of materials, environment and safety, in particular to a test device for fire spread characteristics of building exterior wall insulation panels, a test device and testing method for fire spread characteristics of building exterior wall insulation panels. Background technique [0002] Under the advocacy of the concept of energy saving and environmental protection around the world in recent decades, polymer insulation boards have been widely used in urban buildings due to their advantages such as light weight and low price, and play functions such as building energy regulation and wall decoration. effect. However, the polymer materials used in this type of insulation board, such as rigid polyurethane foam board, molded polystyrene foam board, extruded polystyrene foam board, etc., are composed of a large amount of hydrocarbon elements. Without flame retardant treatment in the process, it is very easy to ...

AI Technical Summary

Problems solved by technology

However, in the current research devices and methods on the fire spread of buildings and building groups, most of them are aimed at the combustion of simple-structured polymer insulation boards. The complex and diverse distribution forms of modern building complexes, as well as the deduction process of fire spread after a fire, cannot be used to study various special fire spread conditions and critical criteria between buildings; secondly, the control of environmental boundary conditions is relatively lacking, for example, it cannot reflect the complex The influence of urban environmental wind on the fire spread of buildings, etc.

Therefore, the existing test devices or methods have limited the research on urban building group fires and the analysis of related fire dynamics.

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