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Method for measuring steel structure welding deformation based on gridding

A technology for welding deformation and steel structure, which is applied in the field of steel structure welding, to achieve the effect of reducing calculation workload, low cost, and simple system requirements

Inactive Publication Date: 2012-07-25
CHINA CONSTR IND & ENERGY ENG GRP CO LTD +1
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Problems solved by technology

[0006] The purpose of the present invention is to provide a grid-based method for measuring welding deformation of steel structures that overcomes the deficiencies of the existing methods of measuring welding deformation of steel structures and meets the requirements of efficiency in actual industrial use and deformation control of welded steel structures

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  • Method for measuring steel structure welding deformation based on gridding
  • Method for measuring steel structure welding deformation based on gridding

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Embodiment Construction

[0026] When measuring welding deformation of steel structures:

[0027] The first step is to design the grid: design grids of different shapes and sizes according to different sizes of steel structures and different welding deformation measurement requirements. The grid form can be designed as dot matrix grid, square grid, and circle as required grid etc. For example, when measuring the deformation of fillet welds, a lattice grid should be used, and the diameter of the lattice is preferably one-thirtieth of the plate thickness; when measuring girth welds, a circular grid should be used, and the diameter of the circle is the thickness of the plate. One-fifth of the plate thickness is appropriate; when measuring the butt weld, it is appropriate to use a square bar grid, and the width of the square bar is preferably one-twentieth of the plate thickness.

[0028] The second step, wire mesh mold making: According to the grid design drawing, reasonably select the mold material, man...

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Abstract

The invention discloses a method for measuring steel structure welding deformation based on gridding, which is characterized in that the procedures of the measuring method comprise: designing gridding, manufacturing a silk screen mould, printing the gridding, fixing a shooting point, sampling and shooting, reconstructing gridding information, creating a deformation coordinate system, comparing corresponding images and calculating deformation. By means of the operation steps, the method disclosed by the invention can measure the deformation dimension and the size of deformation generated during the welding process, and the method has the advantages of being convenient in operation, large in measuring information quantity, accurate and reliable in result, high in efficiency and having no limit on steel structure dimension, non-contact measurement availability.

Description

technical field [0001] The invention relates to the field of steel structure welding, in particular to a grid-based method for measuring welding deformation of steel structures. Background technique [0002] With the rapid development of construction engineering, the design of steel structures is becoming more and more complex, and the requirements for the control of welding deformation are getting higher and higher. Therefore, the need for measuring the deformation of steel structures during welding is also increasing. Common methods for measuring welding deformation of steel structures include: direct measurement method of tape measure and ruler, measuring shrinkage deformation and longitudinal deflection deformation caused by welding; strain gauge measurement method, measuring local displacement and strain of the structure caused by welding; digital camera measurement method, Measure shrinkage deformation of welded structures. [0003] The main disadvantage of the direct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16
Inventor 徐越兰李本勇覃鑫胡晓勇郭海玲宁文华余骁彬王维王亚婷蒋俊车昌盛王洋张新明
Owner CHINA CONSTR IND & ENERGY ENG GRP CO LTD
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