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Earthquake damage structure interlayer residual deformation detection method based on unmanned aerial vehicle camera shooting

A technology of residual deformation and detection method, applied in measurement devices, photo interpretation, instruments, etc., can solve the problems of difficulty in obtaining earthquake damage information, limited evaluators, and large workload, so as to reduce the probability of human misjudgment and reduce Detection time, the effect of multi-angle detection

Active Publication Date: 2021-09-24
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

At present, this detection method has the following limitations: the number of assessors is limited and the workload is heavy; the traditional damage detection method needs to be carried out with the help of precision instruments, which is not suitable for the assessment of a large number of buildings after the earthquake; the complex terrain of the earthquake-stricken area seriously affects the quality of the assessment work. For safety reasons, buildings with serious earthquake damage should not be approached, and it is difficult to obtain sufficient earthquake damage information

Method used

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  • Earthquake damage structure interlayer residual deformation detection method based on unmanned aerial vehicle camera shooting
  • Earthquake damage structure interlayer residual deformation detection method based on unmanned aerial vehicle camera shooting
  • Earthquake damage structure interlayer residual deformation detection method based on unmanned aerial vehicle camera shooting

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Embodiment

[0026] In this embodiment, a two-story self-build concrete frame structure building is selected, with a total height of 7.3 meters (the first floor is 4 meters), the frame width is 1.8 meters, and the length is 2 meters.

[0027] A method for detecting residual deformation between layers of earthquake-damaged structures based on unmanned aerial vehicle photography, such as Figure 4 shown, including the following steps:

[0028] S1. Make the UAV fly according to the set flight route and take a comprehensive picture of the building;

[0029] like figure 1 As shown, the flight path includes 4 horizontal arc flight paths, which need to be converted 3 times; the starting position and end position of each transverse arc flight path are the same; the arc flight paths are equally spaced from bottom to top distributed;

[0030] At the starting position of each horizontal arc-shaped flight path, the flight speed and shooting time interval are fixed until the horizontal arc-shaped fl...

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Abstract

The invention provides an earthquake damage structure interlayer residual deformation detection method based on unmanned aerial vehicle camera shooting. The method comprises the following steps: an unmanned aerial vehicle flyig according to a set flight route and comprehensively shooting a building; transmitting a shot picture to a ground control platform; and after the ground control platform receives the picture, performing three-dimensional reconstruction on the shot building by using an image recognition technology and a three-dimensional reconstruction technology, and calculating an inter-story displacement angle of the building so as to complete the detection of the inter-story residual deformation of the seismic damage structure. According to the invention, limitation of terrains can be broken through, and omnibearing and multi-angle detection is realized; meanwhile, the probability of man-made misjudgment can be reduced through image recognition; moreover, the unmanned aerial vehicle is convenient and fast to photograph, and the detection time can be greatly reduced.

Description

technical field [0001] The invention relates to the field of detection of earthquake-damaged building structures, in particular to a method for detecting residual deformation between layers of earthquake-damaged structures based on unmanned aerial vehicle photography. Background technique [0002] my country is an earthquake-prone country. When a strong earthquake occurs, a large number of buildings will be damaged. Accurate and rapid earthquake damage identification and safety assessment of earthquake-damaged buildings after the earthquake will be of great significance for earthquake damage assessment, post-disaster rescue and reconstruction, etc. At present, the seismic damage assessment of buildings at earthquake sites in my country is mainly carried out by professionals with the help of instruments and equipment on site. At present, this detection method has the following limitations: the number of assessors is limited and the workload is heavy; the traditional damage d...

Claims

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Application Information

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IPC IPC(8): G01B11/00G01B11/16G01C11/08
CPCG01B11/002G01B11/16G01C11/08
Inventor 侯爽陈华儒吴承治张钜键符明东陈麟君
Owner SOUTH CHINA UNIV OF TECH
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