CRTSIII track plate-based shape size quick calculation method

Abstract

The invention discloses a CRTSIII track plate-based shape size quick calculation method. The method comprises the steps of 1) importing a standard three-dimensional design model of a CRTSIII track plate in point cloud processing software; 2) by utilizing the point cloud processing software, establishing a direct plane feature, a direct plane circle feature and a direct boundary comparison point ofthe three-dimensional model of the track plate; 3) by utilizing the point cloud processing software and the established direct plane feature, direct plane circle feature and direct boundary comparison point, establishing features such as an auxiliary point feature, an auxiliary linear feature, an auxiliary plane feature and the like of a CRTSIII track plate shape size detection item; 4) by utilizing the point cloud processing software and the established point feature, plane circle feature, linear feature and plane feature, establishing a direct distance feature and a direct angle feature ofthe CRTSIII track plate shape size detection item; and 5) by utilizing the point cloud processing software, cutting the direct plane feature of the three-dimensional model of the track plate.

Description

technical field [0001] The invention relates to the field of detection of high-speed railway track slabs, in particular to a fast calculation method for the external dimensions of CRTS III track slabs of high-speed railways. Background technique [0002] CRTSⅢ track slab is a major scientific and technological achievement independently developed by my country with completely independent intellectual property rights. It has the characteristics of good durability, high stability and obvious economic advantages. The overall structure of CRTSⅢ slab ballastless track is a new type of unit slab ballastless track structure with retaining shoulders, mainly composed of steel rails, fasteners, prefabricated track slabs, self-compacting concrete with reinforcement (self-leveling concrete adjustment layer), limit stops , middle isolation layer (geotextile) and reinforced concrete base and other parts. The structure of the CRTSⅢ ballastless track slab is similar with minor differences, ...

AI Technical Summary

Problems solved by technology

Although the calculation method realizes the automatic calculation of the deviation of the appearance size of the CRTSⅢ track slab, this method still has the following disadvantages: (1) When obtaining the original data, the device needs to be manually installed on the slab to be tested, which cannot achieve complete Automatic detection; (2) The number of photogrammetry points arranged by this method is limited, and based on the limited number of laser points, it is impossible to realize the refined 3D reconstruction of the surface model of the track slab

However, its point cloud processing and calculation process has not fully applied the achievements of point cloud processing software at home and abroad, and a large amount of development work needs to be completed, making the implementation process difficult

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