Bridge jacking automatic monitoring method based on lofting robot

Abstract

The invention discloses a bridge jacking automatic monitoring method based on a lofting robot. The method includes the following steps of selecting a monitoring point of a bridge, fixing a reflectionpatch to the point, guiding a BIM into the lofting robot, selecting a plurality of lofting process points according to the monitoring point, arranging a station for the lofting robot on a constructioncoordinate system, aiming at the reflection patch for lofting, in the jacking process, observing the transverse off-position displayed by a handbook of the lofting robot, and giving an alarm when theoff-position exceeds the limit. The bridge jacking trajectory is automatically tracked through the BIM and the lofting robot, and the jacking off-position conditions are monitored; through the errorconversion of the transverse off-position and the handbook of the lofting robot, the boundary value determining problem is solved; by dividing the jacking distance and marking a plurality of process points, the aim of monitoring the jacking off-position in real time is realized; the lofting robot is used for bridge jacking monitoring, the fusion of the measuring technology and the BIM technology is realized, the working procedure is simplified, and labor cost is reduced.

Description

technical field [0001] The invention relates to the fields of measurement technology and BIM technology, in particular to an automatic monitoring method for bridge pushing based on a lofting robot. Background technique [0002] The bridge jacking method refers to the method that when the bridge crosses the existing line, the beam body is built in sections on one side of the line, and then pushed with a jack to make it pass through the line. The advantage of jacking construction is that no large machinery is required, and only the completed beam section is pushed along the axis through the jack cycle. Therefore, the key to the quality control of bridge jacking construction is to ensure that the lateral displacement of the bridge during the jacking process is within the allowable error range. [0003] The traditional monitoring method of bridge pushing is the total station measurement method, which is divided into relative method and absolute method. The relative measurement...

AI Technical Summary

Problems solved by technology

The above two methods have their own shortcomings. Although the relative method is intuitive, the erection point of the total station must be at the same height as the bridge, and the high-altitude observation operation is dangerous, and once the observation point is occupied, the work must be suspended; although the absolute method can measure Coordinates, but it must be compared with the theoretical point calculation, which cannot reflect the deviation of the push push in real time

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