Method for evaluating blast vibration damage of building based on 3D laser scanning

A three-dimensional laser and evaluation method technology, applied in the direction of optical devices, instruments, measuring devices, etc., can solve problems such as cracks, load-bearing structure damage, wall deformation, etc., and achieve the effect of broad application prospects

Active Publication Date: 2019-02-15
DACHANG CONSTR GRP +1
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Problems solved by technology

For example, the load-bearing structure of a high oil tower will be damaged under the loads of blasting, wind, and waves; when the buildings and buildings are affected by nearby blasting disturbances and daily temperature changes, t

Method used

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  • Method for evaluating blast vibration damage of building based on 3D laser scanning
  • Method for evaluating blast vibration damage of building based on 3D laser scanning

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Embodiment Construction

[0021] Attached below figure 1 , 2 , to further describe the present invention.

[0022] attached figure 1 , this embodiment takes a load-bearing wall as an example.

[0023] When the ground buildings are affected by vibration, some load-bearing parts will be deformed, cracks will appear, and the structure will be damaged. According to the structure of the building, cracks are divided into two categories: cracks at the load-bearing place and cracks at the powder layer. The cracks at the load-bearing place mainly affect the stability of the structure, while cracks at the powder layer are generally caused by factors such as temperature or natural settlement. Has little effect. First, use 3D laser scanning to obtain the 3D coordinate data of the building as a whole and carry out modeling to obtain complete information on the surface of the building and determine the length and width of the cracks in the load-bearing parts.

[0024] According to the defined local fracture den...

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Abstract

The invention discloses a method for evaluating blast vibration damage of a building based on 3D laser scanning. The method uses a 3D laser scanning technology to scan the building, obtains comprehensive point cloud data of the building, and performs processing and modeling to obtain distribution patterns, length and width expansions of surface cracks in all load-bearing parts. A new local crack density is defined, and the local load-bearing structural damage of the building is judged by the local crack density. The statistics of each load-bearing structural damage are conducted to obtain theoverall local crack density so as to evaluate the overall damage of the building. The vibration displacement of a geometric centerline of the building can also be obtained at the same time by using the 3D laser line scanning. This method can also measure the continuity of a target object, and can obtain a real-time damage state of the building structure. The method can quickly give structural damage results in the judgment of building damage in the fields of mine, water conservancy and hydropower, transportation and the like, thereby having a broad application prospect.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a method for evaluating building blasting vibration damage based on three-dimensional laser scanning. Background technique [0002] Now buildings are damaged by natural or man-made factors. For example, the load-bearing structure of a high oil tower will be damaged under the loads of blasting, wind, and waves; when the buildings and buildings are affected by nearby blasting disturbances and daily temperature changes, the load-bearing parts such as walls will be deformed and cracks will appear. The structure is damaged; bridges and other buildings are subjected to vehicle loads and temperatures, and cracks will also occur, causing structural damage. Therefore, whether it is a major civil engineering project or a general civil building, as time goes by, the accumulation of structural damage and the attenuation of its resistance will inevitably be caused by natural...

Claims

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Application Information

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IPC IPC(8): G01B11/00G01B11/16
CPCG01B11/00G01B11/16
Inventor 管志强严鹏沙广张中雷王林桂卢文波朱敏杰熊勇陈明王高辉
Owner DACHANG CONSTR GRP
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