A method for measuring the amount of grouting at the bottom of an ellipse based on a three-dimensional scanner

Abstract

The invention discloses a three-dimensional scanner-based method for measuring the amount of grouting at the bottom of an ellipse, which comprises the following steps: marking a steel bar reference point on a concrete ellipse; establishing a Cartesian coordinate system with the center of the concrete ellipse as a coordinate origin, Select several control reference points and measure the coordinate positions of each control reference point; scan the concrete ellipse to obtain its scanned image and find the coordinate value of the reference center point, and convert it to the coordinate value in the Cartesian coordinate system; And get the coordinate position of each reinforcement reference point; construct a point triangulation according to its coordinate position, and stretch to obtain a three-dimensional triangulation; extend the elliptical steel plate outward to obtain a three-dimensional steel plate structure; Coordinate system combination, take the common part of the two graphics, and calculate the volume of the common part as the grouting amount. The invention has uniform measurement points for the elliptical concrete bottom surface, convenient measurement, and meets the cost control requirements of on-site construction.

Description

technical field [0001] The invention belongs to the technical field of construction, and in particular relates to a method for measuring the amount of grouting at an elliptical bottom based on a three-dimensional scanner. Background technique [0002] The CAP1400 project is a major national scientific research project and a symbol of independent innovation of my country's third-generation nuclear power technology. Larger passive large advanced pressurized water reactor nuclear power units. [0003] In the design drawing of CAP1400, the space between the bottom of CVBH and the external foundation layer A (theoretical thickness 100mm) needs to be filled with grouting material to provide a supporting surface for CVBH, but the narrow gap is a spherical surface, and the theoretical grouting amount of the spherical surface is 32.2 m 3 , The actual grouting amount is affected by the deviation of the construction size of the A-layer concrete. The total station is used for measureme...

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Problems solved by technology

[0003] According to the design drawings of CAP1400, the gap between the bottom of the CVBH and the external foundation A layer (theoretical thickness 100mm) needs to be filled and compacted with grouting materials to provide a support surface for the CVBH, but the narrow gap space is a spherical surface, and the theoretical grouting volume of the spherical surface is 32.2 m 3 , the actual amount of grouting is affected by the size deviation of the A-layer concrete construction. The total station is used for measurement. There are many measurement points, and the inspection takes a long time, which is not conducive to the optimization of the construction period and cannot ensure the quality of work.

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