Simulation experiment device of high-rise building three-dimensional fire behaviors under effect of environment wind

Abstract

The invention discloses a simulation experiment device of high-rise building three-dimensional fire behaviors under the effect of environment wind. The device comprises a high-rise building model, a rotary platform, a direction adjustable wind hole, a three-dimensional movable thermoelectric coupling frame and a fire source simulating device. The high-rise building model is a cuboid shell and is divided into four chambers, wherein the ignition experiment chamber is provided with the fire source simulating device and a size adjustable building window model. The bottom of the high-rise building model is connected with the rotary platform and matched with the external direction adjustable wind hole so that environment wind in any direction at any wind speed can be simulated. The three-dimensional movable thermoelectric coupling frame is of a combined rectangular structure, and the parameter measurement function of any position of an external wall surface can be achieved. The simulation experiment device for studying high-rise building three-dimensional fire spreading under the effect of environment wind is established for the first time, a wind direction adjusting system is safe, convenient to use and precise, the experiment device is provided with a complete parameter measuring system, and the complete process of a high-rise building from fire starting, flame spreading to final spreading towards the upper layer and adjacent side of the building can be studied.

Description

technical field [0001] The invention belongs to the technical field of fire safety, and specifically relates to a simulation experiment device for the three-dimensional fire behavior of high-rise buildings under the action of environmental wind, which is an experiment and research on the evolution law of the three-dimensional fire behavior and flame characteristic parameters of high-rise buildings under the action of complex environmental wind equipment. Background technique [0002] With the continuous development of cities in our country, in order to alleviate the shortage of land, more and more high-rise buildings are gradually rising, with higher and higher heights, more and more complex structures, and more and more diversified functions, followed by prominent high-rise buildings. The problem of building fires is becoming more and more serious. In recent years, there have been many large-scale building fire incidents, all of which have formed a "three-dimensional fire ...

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Problems solved by technology

[0003] In 2010, the welding slag ignited the surrounding combustible materials in the teacher’s apartment on Jiaozhou Road, Jing’an, Shanghai, due to unlicensed welders operating in violation of regulations, causing a sudden fire on the scaffolding

There is no doubt that the external ambient wind will have a significant impact on the fire dynamics, smoke spread, and thermodynamic behavior of the overflow flame, resulting in fire development characteristics different from those studied under traditional no-wind conditions

[0005] Under the action of strong external environmental wind, it will intensify the process of overflowing flames "from outside to inside", and promote the development of three-dimensional fire spread behavior in high-rise buildings, thus causing serious fire spread accidents

At the same time, due to the complex and changeable wind direction of the ambient wind, it is very easy to generate side wind and blow the flame to the adjacent layer, causing more serious spread.

At present, there are few domestic studies on the behavior of three-dimensional fire spread in high-rise buildings (flame overflowing from the outside to the inside), especially the research on the three-dimensional fire spread behavior under the action of wind in complex environments is almost blank. and fire scene fighting and emergency dispatch urgently need corresponding prediction models as auxiliary decision support

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