Pipe ring flatness measuring method based on total station

Abstract

The invention discloses a pipe ring flatness measuring method based on a total station. According to the pipe ring flatness measuring method, two forced centering points are selected in advance, and coordinates of a plurality of measuring points on the end surface of a pipe ring are detected at the two points by using the total station; and the flatness deviation of each measuring point can be calculated by utilizing a plane formula and a point-to-surface distance formula. The steps are simple, the operation is convenient, the flatness of the end surface of the pipe ring can be flexibly and quickly calculated, the measuring precision is high, and the measuring cost is low.

Description

technical field [0001] The invention relates to the field of shield tunneling, in particular to a method for measuring the flatness of pipe rings based on a total station. Background technique [0002] With the development of society, shield method construction is widely used in projects such as subways, highway tunnels, South-to-North Water Diversion, and comprehensive pipe corridors. advantage. In the excavation process of shield tunneling, the assembly quality of the segment is extremely important, which is related to the quality of the finished tunnel, and the flatness of the pipe ring is the most important. [0003] In shield tunneling construction, the prefabricated lining structure in the shield machine is called a segment, and multiple segments can be assembled into a complete pipe ring, and the flatness of the end face of the pipe ring facing the tunneling direction is called the pipe ring flatness. In shield construction, there are many factors that affect the fl...

AI Technical Summary

Problems solved by technology

Among them, the API measurement method uses a laser tracker to measure the flatness of the pipe ring. Although the measurement accuracy of this method is acceptable, the laser tracker is expensive and the cost is high. It needs to be warmed up for 30 minutes, and the power cannot be cut off when changing stations, so the measurement flexibility is poor; while the VMT guide system measurement method uses the cylinder stroke to calculate the flatness of the pipe ring, and the accuracy and calibration error of the stroke sensor will seriously affect the measurement accuracy. The calculation accuracy of the flatness of the pipe ring. At the same time, the jacking shoe of the oil cylinder cannot completely press the end face of the pipe ring, which will also have a great impact on the calculation of the flatness, which makes the measurement accuracy of this method poor.

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