Displacement real-time monitoring method in steel truss girder pushing process

Abstract

The invention provides a real-time monitoring method for displacement in a steel truss girder incremental launching process, the monitoring method utilizes a real-time monitoring system formed by a total station, a reflecting prism, a monitoring cloud platform and a data processing module for monitoring, the total station automatically and real-timely controls the distance and azimuth angle between a control point and a measuring point on a corresponding steel truss girder, and the real-time monitoring of displacement in the incremental launching process of the steel truss girder is realized. The automatic total station is in cloud connection with the monitoring cloud platform, so that real-time data measured by the automatic total station can be directly uploaded to the detection cloud platform without manual recording or importing; the data processing module can automatically calculate data measured by the total station, and point position errors and precision values of measuring points and control points on the steel truss girder are obtained in real time; the monitoring cloud platform can display all data measured by the automatic total station and data calculated by analysis software in real time, point position errors and precision of measuring points and control points on the steel truss girder can be clearly seen, and follow-up adjustment is facilitated. According to the invention, the monitoring efficiency and real-time performance of structure displacement can be obviously improved, and bridge incremental launching construction with high real-time performance requirements can be met.

Description

technical field [0001] The invention relates to the field of steel truss girder jacking construction control, in particular to a real-time monitoring method for displacement during the steel truss girder jacking process. Background technique [0002] The construction process of continuous steel truss girder jacking is very complicated. How to accurately control the linear posture of the steel truss girder and ensure the structural safety of each member of the steel truss girder is the key to the steel truss girder to form a bridge. However, in the construction process of steel truss girder jacking, there may be lateral displacement deviation due to different slideway resistances, changes in wind direction, temperature difference, and equipment technical differences, which affect the linear posture of steel truss girder and cause certain harm. Therefore, it is necessary to detect the position of the measuring point on the steel truss girder in real time during the pushing pro...

AI Technical Summary

Problems solved by technology

The traditional monitoring method is manual observation, which is time-consuming and labor-intensive, and it is difficult to accurately monitor the position of the measuring point on the steel truss girder at night or when the visibility is low

There is a Chinese utility model with the notification number CN215889415U that proposes a target ball positioning device that assists a three-dimensional laser scanner in monitoring, but the calculation of the result is complicated and the real-time accuracy is not high

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