Building overall-deformation monitoring method based on three-dimensional laser scanning technology

Abstract

The invention discloses a building overall-deformation monitoring method based on a three-dimensional laser scanning technology. The method includes the following steps: obtaining building point cloud data, segmenting the point cloud data, regularizing the data, performing deformation analysis on a point cloud model and judging a building overall-deformation condition. The building overall-deformation monitoring method based on the three-dimensional laser scanning technology is capable of rapidly extracting three-dimensional space characteristics of the point cloud model from the building mass point cloud data and the space characteristics have rotation and translation invariance so that attitude of the building in a three-dimensional space can be expressed uniquely and according to the variance condition of the three-dimensional space characteristics of the building point cloud model, the overall deformation condition of the building, such as sedimentation, inclination and rotation and the like in the three-dimensional space can be analyzed and judged. The building overall-deformation monitoring method based on the three-dimensional laser scanning technology makes full use of complete point cloud data of the surface of the building to analyze the overall deformation condition of the building and the measurement and analysis technology based on faces effectively prevents locality and one-sidedness brought by a deformation analysis result in traditional deformation monitoring based on points.

Description

technical field [0001] The invention relates to the field of construction, in particular to a method for monitoring deformation of a building. Background technique [0002] The overall displacement of the building includes overall translation, lifting, rotation and tilting, etc., which mainly reflects the overall deformation of the building. At present, the monitoring technology of the overall displacement of buildings has developed from traditional geodetic technology to GPS technology, and the corresponding monitoring methods and theoretical research have been relatively in-depth, and the point displacements measured by these methods are relatively accurate, but The above methods are all single-point monitoring, that is to say, only the observation points established on important parts of the building are monitored. The disadvantage is that the number of monitoring points is small, and it is difficult to find the deformation of the area without monitoring points. Destruct...

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Problems solved by technology

At present, the monitoring technology of the overall displacement of buildings has developed from traditional geodetic technology to GPS technology, and the corresponding monitoring methods and theoretical research have been relatively in-depth, and the point displacements measured by these methods are relatively accurate, but The above methods are all single-point monitoring, that is to say, only the observation points established on important parts of the building are monitored. The disadvantage is that the number of monitoring points is small, and it is difficult to find the deformation of the area without monitoring points. Destruction will seriously affect the continuity of the data, and there is a lack of overall analysis of the overall deformation of the building, such as the inclination of the entire wall and the deformation of the housing structure.

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