A high-altitude large-span network frame sliding positioning installation and monitoring method

Abstract

The invention provides a high-altitude large-span net rack sliding positioning mounting method and further provides a high-altitude large-span net rack sliding positioning mounting monitoring method.The effect that in construction through a sliding method, bolted spherical joints are quickly and accurately positioned is achieved. A high-altitude large-span net rack of a steel structure is positioned through a three-dimensional laser scanning system, the positions of all the bolted spherical joints of a whole splicing platform can be synchronously determined at a time, quickness and convenience are achieved, as for a traditional method, a total station and a theodolite are used for measuring the mounting positions of the bolted spherical joints one by one, and thus the time and labor are wasted. The problem that as for construction of a high-altitude large-span steel structure net rack through the sliding method, deformation monitoring for the net rack lacks in the process that the netrack separates from a sliding operating frame is solved, displacement deformation of key joints of the net rack is monitored through the three-dimensional laser scanning system, by comparing the deformation result of finite element calculation, the state of the net rack is judged advantageously, it is ensured that net rack deformation is within the controllable range, the construction risk is lowered, and construction safety is ensured.

Description

technical field [0001] The invention belongs to the field of construction, and in particular relates to a sliding positioning installation and monitoring method of a high-altitude large-span network frame. Background technique [0002] As a variety of forms, beautiful and economical building structure, long-span space steel structure is widely used in public buildings. At the same time, the unique and complex structural form of the long-span space steel structure also brings opportunities and challenges to the site construction. [0003] Compared with general steel structure components, there are some construction difficulties in the installation of long-span steel grid structures: (1) Stability problems, the problem that the steel grid structure is prone to deviate from the hoisting position during the hoisting process, resulting in the inability of the components to be fast and accurate (2) The amount of high-altitude work is heavy. Due to the limit value of the hoisting ...

AI Technical Summary

Problems solved by technology

Before the network frame is assembled, it is necessary to accurately locate the position of the network frame support. During the sliding construction process of the sliding operation frame, it is necessary to monitor the steel structure network frame detached from the sliding operation frame. Traditionally, a total station is used for monitoring. The positioning method needs to measure the position of each grid support in turn, which is time-consuming and laborious. At the same time, it is difficult to ensure the simultaneous monitoring of each key point. The deformation of the steel structure grid is not taken seriously, and it is impossible to give early warning for large deformations.

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