A Calculation Method for the Overlapping Area of Cracks in Asphalt Pavement
A technology that affects areas and calculation methods. It is used in calculation, image analysis, image enhancement, etc., and can solve problems such as difficulty in obtaining crack location information, lack of calculation methods, and overestimation of crack severity.
Active Publication Date: 2022-03-11
BUREAU OF TRAFFIC CONSTR ENG QUALITY SUPERVISE OF INNER MONGOLIA AUTONOMOUS REGION
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Problems solved by technology
However, in the on-site inspection, it is found that the affected areas of adjacent cracks or intersecting cracks overlap, which will lead to double calculation of the affected area of cracks, resulting in overestimation of the severity of cracks, which will lead to unnecessary investment in maintenance funds; at the same time, accurate The calculation of the overlapping area affected by intersecting or adjacent cracks can also estimate the amount of crack repair materials more accurately, providing a basis for scientific and reasonable allocation of maintenance funds
[0004] However, there is no calculation method for the overlapping area of the fracture affected area, mainly due to the limitation of detection technology, it is difficult to obtain accurate fracture location information
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[0054] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0055] In the present invention, * expresses the multiplication sign. The embodiments of the present invention take the actual measurement data of adjacent cracks and intersecting cracks in the on-site detection of asphalt pavement as an example.
[0056] see figure 1 , the present invention specifically comprises the following steps:
[0057] 1. Establishment of linear equations for adjacent strike points of fractures
[0058] Table 1 Detection data of adjacent cracks (sample 1)
[0059]
[0060]
[0061] Table 2 Intersecting fracture detection data (sample 2)
[0062]
[0063] According to the order of the coordinate data of the strike points of each fracture in Table 1 and Table 2, for example, connect the two adjacent fracture strike points of Fracture 1 under Sample 1 in sequence (x1 i ,y1 i ),like figure 2 As shown, the linear equ...
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A calculation method for the overlapping area of the affected area of asphalt pavement cracks. The coordinates of the obtained crack trend points are connected in sequence with two adjacent trend points, and the corresponding linear equation parameters are determined. The boundary line equation obtained by extension; from the boundary line equation, the boundary of the affected area is obtained, and the two intersect each other. Through the orderly connection of each intersection point, the affected area of a single crack is determined, and by analogy, each of the multiple cracks is determined. The affected area of the crack; from the determined affected area of each crack in the multiple cracks, the boundary lines and boundary points of the affected areas of two adjacent or intersecting cracks are taken to perform the intersection and union operation of polygons, and the boundary point sequence of the overlapping area is determined and Calculate the overlap area. The present invention practices the calculation of the overlapping area in a process-based method, and the applicability includes not only intersecting cracks but also adjacent cracks, which is of great significance to the maintenance and repair of joint-filling and sealing road sections.
Description
technical field [0001] The invention belongs to the field of asphalt pavement disease detection and evaluation, and in particular relates to a method for calculating the overlapping area of cracks in the asphalt pavement. Background technique [0002] Cracks, as one of the most important types of damage to asphalt pavement, are produced by the repeated action of traffic load and temperature stress, and are the main form of early damage to the pavement, almost accompanying the entire life cycle of the asphalt pavement. According to the current situation survey of highway pavement damage types in some provinces and cities in my country according to the "Highway Technical Condition Evaluation Standard", cracks often account for more than 60% of pavement damage. Structural defects such as cracks and pits will reduce the service life and increase maintenance costs. Among them, the load-type cracks are mainly due to the fact that the pavement is in the state of stress-strain ove...
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IPC IPC(8): G06T7/62G06T7/00
CPCG06T7/0004G06T7/62G06T2207/30108
Inventor 张洪伟王学营刘振正赵晓亮谢春磊李喆于晓光刘恒
Owner BUREAU OF TRAFFIC CONSTR ENG QUALITY SUPERVISE OF INNER MONGOLIA AUTONOMOUS REGION