A Method for Group Control of Urban Pipeline Construction Site

Abstract

The invention belongs to the field of pipeline engineering, relates to a method for controlling the assembling in an urban pipeline construction site and aims to solve the problem that a constructionsite is lack of a fast and accurate pipeline assembling control method. The method comprises the following steps: carrying out site measurement by adopting spatial point measurement equipment, thus obtaining real site measurement data; transmitting the data to a PC (Personal Computer) side through WIFI (Wireless Fidelity) wireless communication, and rapidly computing the measurement data, thus obtaining an accurate angle and an accurate pose of an elbow, the size of a transition pipe and the shape of a pipe opening; then drawing an outer circle of the pipe opening of the transition pipe into atwo-dimensional expansion drawing, printing the two-dimensional expansion drawing, and providing site guidance for guiding the cutting of the transition pipeline. According to the method disclosed bythe invention, a measurement process is simplified, and the working efficiency of pipeline assembling is increased, so that very high practical value and good market application prospect are obtained.

Description

technical field [0001] The invention belongs to the field of pipeline engineering, and relates to a method for group control on urban pipeline construction sites. Background technique [0002] In the construction of urban pipeline projects, the pipelines to be connected will often cross, and the connection of the cross-connection through elbows and transition pipes is an important link for all pipelines to form a whole. Among them, there are many restrictions on the construction of large-diameter pipeline connections. The environment, terrain, geological soil conditions, and climate are all important factors that restrict construction. The axis of the existing pipeline does not coincide with the axis of the connecting elbow. The straight cut of the transition pipe cannot meet the requirements of the assembly. The transition pipe needs to be cut obliquely. When the bevel cut size is inaccurate or the on-site cutting method is not complete, repeated revisions or even Re-cut. ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems of low efficiency and poor precision of existing urban pipeline construction site group control methods, the present invention proposes a method for urban large-diameter pipeline construction site group control, using non-contact measuring equipment (such as total station ) to obtain the real three-dimensional coordinates of the existing pipeline space points, and construct a cylindrical parameter model; based on the coordinates of the measured points on the pipe wall, use the Jacobian iterative algorithm and the cylindrical parameter model for fitting to obtain the spatial equation of the existing pipeline, and then determine the elbow Angle and pose; based on the coordinates of the measurement points on the nozzle, the Jacobian iterative algorithm and the space plane equation are used for fitting to obtain the nozzle equation connected at both ends of the transition pipe, and the two planes are transformed into a unified coordinate system to determine the size of the transition pipe And draw the two-dimensional expansion diagram of the outer circle of the nozzle to provide a basis for the cutting of the transition pipe

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