Continuous measurement and monitoring system for cantilever-method construction line font of linear bridge and monitoring method

Abstract

The invention discloses a continuous measurement and monitoring system for a cantilever-method construction line font of a linear bridge. The system comprises reflecting drones, mounting upright pillars and a laser distance measurement devices. The invention further discloses a continuous monitoring method utilizing the continuous measurement and monitoring system. The continuous monitoring method comprises the following steps: (1) adjusting the positions of a first reflecting drone and a second reflecting drone by an operator; (2) measuring the actual offset of the second reflecting drone by virtue of a first laser distance measurement device; and (3) verifying a horizontal degree and rotation angle of the first laser distance measurement device by taking the actual position of the second reflecting drone as a basis, measuring the actual offsets of the first reflecting drone and a third reflecting drone by virtue of a second laser distance measurement device, and when a suspension basket is moved and is stopped after being moved in place, carrying out continuous monitoring on the offset of the suspension basket. The continuous measurement and monitoring system is simple in structure and convenient to measure, can be used for continuously measuring in a moving process of the suspension basket and is applicable to the suspended casting construction of most linear bridges.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a monitoring system and a monitoring method in the cantilever construction of straight-line bridges. Background technique [0002] The main work contents of cantilever construction with hanging basket include: pouring the starting beam section (block 0#) on the top of the pier, assembling the hanging basket on the starting beam section and segmenting the hanging beam section in turn; closing the side span and middle span. The bottom of the 0# block is supported by the pier column, which is the pier column of the 0# block. [0003] When the cantilever pouring method is used for construction, the No. 0 block beam section at the top of the pier is cast in-situ by vertical formwork on the bracket. The construction bracket can be supported by the pier body, cap or the ground respectively according to the height of the pier body, the form of the cap and the terrain conditi...

AI Technical Summary

Problems solved by technology

[0007] Since the alignment monitoring of the hanging basket construction includes the elevation and coordinate measurement of multiple steps such as the installation and removal of the hanging basket, concrete pouring of the cantilever section, and prestressed tendon tensioning, the measurement frequency is high, the data volume is large, and the measurement points are many; Some surveys require professionals, professional equipment, and surveys at a certain time point in a good construction environment. Due to the particularity of the survey, the labor intensity is heavy and the tasks are heavy, and it is impossible to do all-weather and full-time surveys. monitor

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