Device and method for measuring high-precision mounting flatness of cable saddle of suspension bridge

Abstract

The invention discloses a device and method for measuring the high-precision installation flatness of a cable saddle of a suspension bridge, and the device comprises a micrometer depth gauge, stainless steel cups and a connecting guide pipe, and the five stainless steel cups with the same size and height are disposed at the four corners and the center of the top surface of a cable saddle grid. The five stainless steel cups are sequentially communicated together anticlockwise through the connecting guide pipe, a proper amount of water is injected into the five stainless steel cups, and the water level is slightly lower than cup openings; the depth micrometer is vertically placed on the cup edge of the central stainless steel cup through the depth micrometer base, the spherical surface of the measuring probe makes contact with the water surface of the central stainless steel cup, and the distance from the water level to the top of the central stainless steel cup is obtained. The measuring device has the advantages that the measuring efficiency can be effectively improved, the overall stability is good, cyclic operation can be realized, the structure is simple, the manufacturing and carrying are convenient, and the material cost is saved. According to the measurement method, the flatness measurement precision and efficiency can be improved.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a device and method for measuring the flatness of high-precision installation of cable saddles of suspension bridges. Background technique [0002] With the continuous development of China's engineering surveying industry, the construction of bridges, buildings, mechanical processing and manufacturing has higher and higher requirements for flatness measurement accuracy, such as suspension bridge saddle manufacturing, installation accuracy, bridge engineering support, flatness of pad stones Etc. measurement, conventional flatness measurement methods mainly include total station triangular elevation measurement and level measurement. However, as the technology and process of suspension bridges become more and more mature, the requirements for measurement accuracy are also getting higher and higher. According to the design institute's green Explanation of the special acceptance in...

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Problems solved by technology

[0002] With the continuous development of China's engineering surveying industry, the construction of bridges, buildings, mechanical processing and manufacturing has higher and higher requirements for flatness measurement accuracy, such as suspension bridge saddle manufacturing, installation accuracy, bridge engineering support, flatness of pad stones Etc. measurement, conventional flatness measurement methods mainly include total station triangular elevation measurement and level measurement. However, as the technology and process of suspension bridges become more and more mature, the requirements for measurement accuracy are also getting higher and higher. According to the design institute's green Explanation of the special acceptance indicators for the manufacture and installation of the suspension bridge roller-type combined cable saddle of the Jujiang Super Bridge: the flatness of the top surface of the grid and the bottom surface of the cable saddle, the main machining accuracy allowable deviation is 0.08mm / m, the main full plane is 0.25mm, and the installation error is full Plane ≤ 0.3mm / full plane; general total station and level measurement are affected by the environment and their own accuracy factors, and it is difficult to meet the requirements of construction, processing and installation accuracy; in special environments, manual auxiliary tape measurement is used, which will lead to measurement accuracy Low and large error; if conventional measurement is used, the measurement accuracy cannot meet the requirements, so it is necessary to develop a high-precision auxiliary device to measure and control the flatness

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