A Fine Modeling Method for Surface and Internal Damage of Concrete Structures

Abstract

The invention discloses a refined modeling method of damages at concrete structure surface and inner part, which mainly includes steps of scanning a damaged concrete structure surface by a three-dimensional laser, and acquiring three-dimensional point cloud data; building a three-dimensional model and its coordinate system; scanning and detecting the inner part of the concrete structure without damage face by face, and acquiring a C-SCAN cross section of the inner structures in relative to different depths of the scanning face; matching the C-SCAN cross section with the actual corresponding curve face in a three-dimensional model according to the calibrated coordinate and the three-dimensional model; restructuring the concrete structure three-dimensionally; scanning the concrete structuresurface before damage according to above steps; building a concrete three-dimensional structure before damage; comparatively analyzing the concrete three-dimensional structures before and after damage; accurately positioning and measuring the damage, gap, crack and deformation at the surface and the inner part of the concrete structure. The detecting result forms the C-SCAN cross section drawing in relative to different depths of the scanning face, the inner damage condition is displayed more intuitively.

Description

technical field [0001] The invention belongs to the field of safety monitoring and analysis of concrete buildings, and relates to a fine modeling method for concrete structure surface and internal damage, in particular to a method for detecting concrete structure surface and internal damage based on a three-dimensional laser scanner and an ultrasonic detector. Source data fusion approach for fine modeling of surface and internal damage before and after concrete failure. Background technique [0002] Regardless of roads, bridges, water conservancy ports, other industrial or civil buildings, if there is an earthquake or other external forces, the safety of the concrete structure will inevitably be affected. Knowing the surface and internal damage of the structure is an important guide for taking remedial measures in the next step. The traditional method of concrete damage detection can only carry out corresponding non-destructive detection of surface cracks or internal cracks,...

AI Technical Summary

Problems solved by technology

[0004] At present, after sensing surface and internal damage through non-destructive testing of concrete, there is no effective fine-grained modeling method to visually display the surface and internal damage of the concrete structure

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