Mounting, measuring and positioning device for steel pipe arch segments and construction method

Abstract

The invention relates to the field of the constructing of bridge engineering, and discloses a mounting, measuring and positioning device for steel pipe arch segments and a construction method for the mounting, measuring and positioning device for the steel pipe arch segments. The construction method comprises the following steps that reflective patches are symmetrically arranged on the upstream side and the downstream side of each of the steel pipe arch segments, wherein an included angle between the reflective patches and a waist line of an arch rib of the corresponding steel pipe arch segment is a mounting included angle of the arch rib of the corresponding steel pipe arch segment; and measurement is completed in the manner of being matched with a tacheometry through the reflective patches, so that each of the steel pipe arch segments is accurately positioned. According to the construction method disclosed by the invention, mounting of the steel pipe arch segments can be accurately controlled, time for measuring is shortened, measuring data is stable, and a measuring staff does not need to construct or operate on the arch ribs, so that the safety risk is low; and long-term observation can also be real-time performed on the erected arch rib segment, and a data support is provided for the closure of the steel pipe arches.

Description

Technical field [0001] The invention relates to the field of bridge engineering construction, in particular to installation, measurement and positioning construction of steel pipe arch sections. Background technique [0002] Steel tube arch bridges are mostly suitable for mountainous river valleys and complex terrain. The terrain of the bridge site area is steep. The conventional measurement method for the installation and positioning of steel tube arch segments is that when each segment of the arch rib is hoisted, the surveyor uses the scaffold platform to reach the top surface of the arch rib A small prism is placed at the midpoint of the structure for measurement and positioning, which poses a high safety risk during the operation. The stability of the measurement personnel holding the prism in the middle affects the measurement accuracy, and each measurement needs to determine the stability and safety of the arch rib before measuring on the arch rib. ,low efficiency. Summary...

AI Technical Summary

Problems solved by technology

[0002] Steel pipe arch bridges are mostly suitable for mountainous valleys and complex terrains. The terrain of the bridge site area is steep. The conventional measurement method for the installation, measurement and positioning of steel pipe arch segments is that when hoisting the arch ribs of each segment, the surveyors go to the top surface of the arch ribs through the scaffolding platform. A small prism is placed on the middle point of the structure for measurement and positioning, which poses a high safety risk during the operation. The stability of the center of the prism held by the surveyor affects the measurement accuracy, and each measurement needs to judge the stability and safety of the arch rib before going to the arch rib for measurement operations. The working time is long ,low efficiency

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