Implementation method of collapse early warning system under large-space roof fire

Abstract

The invention relates to an implementation method of a collapse early-warning system under a large-space roof fire, which comprises the following steps that: a detection part is arranged on a roof corresponding to a roof structure grid to be detected to obtain near-roof dynamic temperature and dynamic space coordinates of a detected point position, and transmits data to the outside in a wireless and acoustic emission mode; visual early warning is sent out instantly in a light display mode; the disposal part is arranged in a ground safety area around a fire building, receives dynamic temperature data and dynamic space coordinate data, sent by all the detection parts, of the detection point positions close to the roof in a wireless harmony recognition mode, and carries out calculation in combination with manually-input building and roof structure information data. Sound early warning and wireless early warning are sent to related personnel according to different early warning levels; compared with the prior art, the system is used for predicting and early warning the whole collapse process of the area and the whole body, seriously affected by the fire, of the roof from the two perspectives of critical temperature and bearing capacity for the large-space roof, the number of erected instruments is small, and huge public safety benefits are achieved.

Description

technical field [0001] The invention relates to the field of emergency rescue for building fire accidents, in particular to a method for realizing a large-space roof collapse warning system under fire, which is used for roof structures (space grid structures, bent frames, and rigid frame structures) that contain large spaces. ) prediction and early warning of the collapse process under fire, to achieve the purpose of ensuring the safety of building internal users, especially firefighting and rescue personnel. Background technique [0002] In a fire accident, there is a risk of collapse (collapse) of the building structure, which will threaten the safety of users who are not evacuated in time and firefighting and rescue personnel, and will increase property losses at the same time. Forecasting the collapse of building structures in fire accidents is a realistic demand for emergency response to building fire accidents, but it is also a worldwide problem. In general engineerin...

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Problems solved by technology

[0019] The present invention overcomes the problems in the prior art: the devices, technologies and methods used to solve the problem of collapse warning in building fire accidents all focus on the collapse of multi-storey and high-rise buildings under fire (mainly due to horizontal inclination deformation), but not for large space places This kind of roof structure with a large planar area usually collapses under fire (it is not easy to observe around the ground, mainly due to deflection deformation), and the collapse development process of this large-span roof structure is passed through the current method. It is difficult to capture and determine the deformation process and magnitude by observing the lateral deformation of the supporting walls around the building.

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