Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A welding process and technology of steel box girder, applied in welding equipment, welding accessories, manufacturing tools, etc., can solve the problems of welding accuracy and unsatisfactory quality of welding seam and welding points, so as to improve the overall quality, eliminate stress, and improve the overall anti-stress effect
Inactive Publication Date: 2021-10-15
TUNNEL ENG CO LTD OF CHINA RAILWAY 18TH BUREAU GRP
View PDF14 Cites 3 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0005] The object of the present invention is to provide a kind of construction welding process of steel box girder, to solve the welding process used in the construction welding process of the existing steel box girder proposed in the above-mentioned background technology, the welding precision and the quality of welding seam welding spot are not ideal question
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0032]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] see Figure 1-3 , an embodiment provided by the present invention:
[0034] A steel box girder construction welding process, comprising the steps of:
[0035] Step 1. Steel material selection: the user pre-selects Q345qc steel plate as the main body of the steel box girder, and the main steel materials of the steel box girder are the top plate 1, the outer web 2, the curved bottom plate 3, the outer middle web 4, the bottom plate 5, and the partition 6...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Property
Measurement
Unit
thickness
aaaaa
aaaaa
elongation at break
aaaaa
aaaaa
Login to view more
Abstract
The invention discloses a steel box girder construction welding process. The steel box girder construction welding process comprises the following steps that 1, steel material selection is achieved: a Q345qc steel plate is selected by a user as a steel box girder main body in advance, the main body steel of the steel box girder comprises a top plate, an outer side web plate, an arc-shaped bottom plate, an outer side middle web plate, a bottom plate, a partition plate, an inner side middle web plate and an inner side web plate, and an auxiliary material steel plate selects a high-carbon steel material; auxiliary material steel plates are reinforcing rib plates, top plate vertical ribs and bottom plate vertical ribs. According to the steel box girder construction welding process, precise selection is carried out from material selection through flow matching of steel material selection, steel material pretreatment, frame gap position adjustment, frame positioning, main frame welding, welding spot and welding seam primary flaw detection, auxiliary frame welding, welding spot and welding seam secondary flaw detection, section repair welding and welding spot and welding seam three-time flaw detection; and meanwhile, the overall quality of the foundation steel material is improved, a main frame and an auxiliary frame are welded in a sectional type welding mode, flaw detection is conducted in time after each stage is completed, and the welding quality of all the stages is improved.
Description
technical field [0001] The invention relates to the technical field of steel box girders, in particular to a construction welding process for steel box girders. Background technique [0002] Steel box girder, also known as steel plate box girder, is a common structural form of long-span bridges. It is generally used on bridges with large spans. It is called steel box girder because it looks like a box. The characteristics of steel box girder: In span cable-supported bridges, the steel box main girder has a span of hundreds of meters to thousands of meters, and is generally divided into several beam sections for manufacture and installation. Its cross-section has wide and flat shape characteristics, and its aspect ratio reaches 1:10. about. [0003] In the construction of large-scale infrastructure facilities such as bridges and cross-bridge expressways, steel box girders are required. However, steel box girders are manufactured by welding multiple steel plate parts, and the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/18B23K9/32
CPCB23K9/16B23K9/18B23K9/32
Inventor 饶国东郭少杰吴晓志端木梦婷田凌峰
Owner TUNNEL ENG CO LTD OF CHINA RAILWAY 18TH BUREAU GRP