Environmental Wind Field Simulation System Applied to Fire Performance Test of Building Exterior Wall

Abstract

The invention discloses an environment wind field simulation unit and an environment wind field simulation system applied to fireproof performance test of a building exterior wall. The unit comprises a shell, and a transmission fan, electric air valves, a rectifying grating and an air supply duct which are sequentially distributed in the shell, wherein the transmission fan at least corresponds to the three electric air valves, the quantities of the rectifying grating and the air supply duct are equal to that of the electric air valves in a one-to-one correspondence manner, and a spherical nozzle is arranged on the tai lend of each air supply duct. The system comprises a plurality of environment wind field simulation units, a support and universal wheels for supporting and moving the units, and a control system used for controlling the air supply speed and direction of the system. Through the reasonable structural design, not only can the environment wind fields at different heights of the whole building exterior wall can be simulated in a reduced-scale manner, but also the environment wind field outside the firing layer can be simulated on a full-scale manner, thus providing basis and guarantee for accurately conducting the fireproof performance test of high-rise or ultrahigh-rise buildings.

Description

technical field [0001] The invention relates to the technical field of fire protection engineering, in particular to an environmental wind field simulation system applied to the fire performance test of building exterior walls. Background technique [0002] With the development of social economy and the intensification of urbanization, the carrying capacity of urban land resources has been challenged unprecedentedly. The intensive use of land resources and the efficient integration of building space have become an inevitable development trend, and many high-rise and super high-rise buildings have emerged as the times require. . However, with the huge building volume, dense personnel distribution and high fire load, once a fire breaks out, its hazards are by no means comparable to ordinary single or multi-storey buildings, and it is easy to cause heavy casualties and property losses. Therefore, carrying out fire test research on high-rise and super high-rise buildings has an...

AI Technical Summary

Problems solved by technology

Although the device for environmental wind field simulation uses a mobile air curtain system, which can simulate the outdoor environmental wind field on any floor, it cannot realize the simultaneous reproduction of the environmental wind field of the entire building exterior wall. In addition, the air supply angle cannot be changed. It can only be perpendicular to the outer wall of the building, and the range of air supply speed is only 0-8m / s, which makes it difficult to reflect the wind field of the outdoor environment on the upper floors of super high-rise buildings

At the same time, the geometric shape of the air supply surface of the environmental wind field simulation device in the above two patents is relatively simple, and it is impossible to generate an environmental wind field with multiple distribution rules, and it cannot be well applied to building exterior walls with complex geometric shapes.

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