Segment dislocation measuring device and method

Abstract

The invention discloses a segment dislocation measuring device and method. The device comprises a first measuring ruler (1) and a second measuring ruler (2); the first measuring ruler and the second measuring ruler are both rulers with scale marks; the 0 scale mark end of the first measuring ruler is connected with the 0 scale mark end of the second measuring ruler; an angle between the first measuring ruler and the second measuring ruler is 180 degrees-theta; and a dislocation quantity a is equal to a scale reading L*sin (180 degrees-theta). The method includes the following steps that: the scale mark side of the first measuring ruler is attached onto a first segment (3); step 2, the first measuring ruler slides along the first segment toward a second segment, so that the scale mark sideof the second measuring ruler contacts with the edge of the upper end of the second segment; and step 3, the dislocation quantity a is calculated through the scale reading L. With the device and method of the invention adopted, measurement errors and measurement work intensity can be decreased, accurate and timely dislocation data are provided for a shield formed tunnel, the analysis of the causeof dislocation is assisted, construction parameters are adjusted, and a preliminary basis is provided for high-quality formed tunnels.

Description

technical field [0001] The invention relates to a measuring tool and method in shield tunneling construction, in particular to a segment offset measuring device and method. Background technique [0002] In shield construction technology, the quality of the formed tunnel is an important basis for measuring the quality of the main project. The quality parameters of the formed tunnel include water seepage, damage, misalignment, ellipticity, elevation, horizontal position, etc. The important acceptance items of the tunnel acceptance must meet the 100% pass rate required by the design and specification in order to pass the project acceptance. Segment misalignment is the dimensional deviation formed between adjacent segments of the same ring or adjacent ring segments after the assembly is completed. There are many factors that affect the size of the misalignment, such as: shield posture, segment bolt tightening, synchronization Timely and accurate mastering of segment mislocation...

AI Technical Summary

Problems solved by technology

[0004] 1. When measuring the segment misalignment, due to the measuring principle of the feeler gauge, the feeler gauge needs to be attached to the lower arc surface of the segment, and the steel ruler is close to the raised segment, but the segment is an arc The surface of the feeler gauge is linear, so that the arc surface of the tube and the feeler gauge cannot be closely fitted, resulting in measurement errors; and the longer the feeler gauge length, the less tightly the fit and the greater the error , resulting in errors in the measured data, the measurement is inconvenient and requires both hands to complete the operation

[0005] 2. During the measurement process, it is necessary to hold the steel ruler in one hand and the feeler gauge in the other hand, which is inconvenient to operate, and it requires the cooperation of a second person to save the image data, which consumes manpower

Images