Method for automatically monitoring displacement of building structure in fire disaster

A technology for automatic monitoring of building structures, applied in measuring devices, radio wave measurement systems, radio wave reflection/re-radiation, etc., can solve problems such as the inability to quickly obtain horizontal displacement and vertical displacement components at the fire scene, and achieve an improved situation The effect of synchronization accuracy, reliable early warning results, and flexible deployment

Pending Publication Date: 2022-01-11
应急管理部四川消防研究所
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Problems solved by technology

However, when the microwave interferometry device is used to monitor according to the traditional method, since the measurement is the distance change in the line of sight direction, the horizontal displacement and vertical displacement components cannot be quickly obtained at the fire scene, and the accuracy and convenience in practical applications are relatively large. question

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  • Method for automatically monitoring displacement of building structure in fire disaster
  • Method for automatically monitoring displacement of building structure in fire disaster

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Embodiment

[0029] Such as figure 1 , 2 As shown, the automatic monitoring method for the displacement of a building structure in a fire disclosed by the present invention comprises the following steps:

[0030] Firstly, the 3D digital model of the monitoring building is pre-established. The model mainly includes load-bearing structures such as beams and columns, forming a digital mirror image of the building;

[0031] Then carry out numerical simulation analysis on the actual building to obtain the displacement and collapse modes of the building structure under different fire scenarios, reveal the weak parts of the building structure that are vulnerable to fire, such as steel structure beams and columns, and establish a fire collapse database, including the main information as follows: : The fire scenarios most likely to collapse, and the displacement and temperature thresholds of structural weak links in each scenario; and store them in the monitoring terminal.

[0032] Then, accordin...

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Abstract

The invention discloses a method for automatically monitoring the displacement of a building structure in a fire disaster, which can quickly and automatically monitor the horizontal displacement and vertical displacement of multiple points in a fire disaster environment. The method comprises the following steps: (S1) establishing a 3D digital model to form a digital mirror image of a building; (S2) establishing a building fire collapse database; (S3) installing a contact type temperature sensor and a plurality of beacons; (S4) arranging a ground displacement telemetering device and a high-altitude displacement telemetering device; (S5) measuring the distance between the ground telemetering device and the high-altitude telemetering device in real time and the distance between the ground telemetering device and the high-altitude telemetering device and the beacon monitoring point position; (S6) calculating building displacement and matching a fire scene; and (S7) carrying out threshold value comparison and alarming. Through the design, the unmanned aerial vehicle is adopted to carry the radar, deployment is more flexible, and the method is not limited by terrains; and the vertical displacement information of the key part is easier to obtain from the overhead view. Therefore, the method is suitable for popularization.

Description

technical field [0001] The invention relates to the technical field of fire monitoring, in particular to an automatic monitoring method for building structure displacement in a fire. Background technique [0002] With the development of society, people have higher and higher requirements for monitoring the vibration and deformation of large and high-rise buildings, especially for the real-time and non-contact monitoring methods of building structure displacement in fire. [0003] In the event of a fire, the high temperature generated by the fire will damage the building structure and cause the building to deform to a certain extent. When the deformation reaches a certain level, the building may collapse, which will seriously threaten the safety of fire rescue personnel in the fire. Therefore, real-time and accurate monitoring of the displacement and deformation of key parts is an important means for early warning of collapse. It is especially important that the horizontal a...

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Application Information

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IPC IPC(8): G01S13/88G08B21/24
CPCG01S13/88G08B21/24
Inventor 蒋亚强
Owner 应急管理部四川消防研究所
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