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Method of reference counting before cable tower segmental face machining

A benchmark calculation and cable tower technology, applied to measuring devices, instruments, optical devices, etc., can solve the problems of low marking accuracy, complicated operation process, and unusability

Inactive Publication Date: 2006-11-29
CHINA RAILWAY BAOJI BRIDGE GRP
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Problems solved by technology

The disadvantages of traditional measurement and calculation methods are mainly that the operation process is complicated, the efficiency is low, and the marking accuracy is not high
According to the results of consulting with Japanese experts, it takes about 2 working days to complete the measurement and marking operation of a segment with the traditional method of measuring and calculating lines, which cannot meet the progress requirements of the bridge steel cable tower manufacturing project
In addition, from a technical point of view, it is possible to complete the measurement and calculation of the straight cable tower segment by the traditional measurement and marking method, but the bridge cable tower is a curved cable tower, and the traditional measurement and calculation method cannot be used without improvement

Method used

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  • Method of reference counting before cable tower segmental face machining
  • Method of reference counting before cable tower segmental face machining
  • Method of reference counting before cable tower segmental face machining

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Experimental program
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Embodiment 1

[0039] Embodiment 1: with reference to attached Figure 1~5 . Steel cable tower segmental space measurement method, (1) workpiece state control:

[0040] ① Requirements for supporting reaction force:

[0041] | N 1 - N 2 | N 1 + N 2 ≤ 0.05 ,

[0042] In the formula, N1 and N2 represent the support reaction force, N1-N2 represents the support reaction force difference, N1+N2 represents the support reaction force sum,

[0043] | N 3 - N 4 | N 3 + N 4 ≤ 0.05 In the formul...

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Abstract

The invention relates to follow-up survey meter used three-dimensional laser to measure cable wire tower subsection. It adopts six dimensions surveying calculation processing for measured data by measured data processing program software that it uses the theoretical data of the subsection end face angel point to make three-dimensional data model representation theoretical data model of the theoretical subsection, and uses measured data processing program to process least square method fitting for the theoretical subsection data model representation theoretical data model and the actual model in the same coordinate system. Compared with the traditional measuring method, it can improve measuring scoring precision and reduce its time to two hours.

Description

Technical field: [0001] The invention relates to a method for measuring steel cable tower segments by using a three-dimensional laser tracking measuring instrument, and using measurement data processing program software to perform six-dimensional measurement and calculation processing on the measurement data, which belongs to the field of steel cable tower segment manufacturing. Background technique: [0002] In the field of bridge steel tower segment manufacturing abroad, the traditional measurement and calculation method for end face processing is to measure with a steel tape and draw 8 midpoints on the two port wall plates of the segment with a stylus, to control the force support of the segment and Adjust it to a horizontal state. After uniform temperature, use theodolite, level and other optical measuring instruments to repeatedly measure and correct the marked midpoints, and re-determine 8 new midpoints. On the axial plane of the horizontal bridge and the horizontal br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/00G01B11/00
Inventor 李毅吉敏廷张忠虎秦博龙
Owner CHINA RAILWAY BAOJI BRIDGE GRP
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