A method for manufacturing a main girder with a hanging point pierced through an I-shaped weather-resistant steel side

A manufacturing method and technology of weathering steel, applied in bridges, buildings, etc., can solve the problems of high manufacturing precision, high welding process requirements, and complex structure of side main girders

Active Publication Date: 2021-02-09
CHINA RAILWAY SHANQIAO GRP CO LTD
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  • Application Information

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Problems solved by technology

[0002] The steel-concrete composite beam is becoming a popular structural form for long-span bridges. The side main girder is connected with the beam and the air nozzle as a whole. The structure of the side main girder is complicated and requires high manufacturing precision. The side main girder is made of weathering steel, which requires high welding process and requires a large amount of welding.

Method used

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  • A method for manufacturing a main girder with a hanging point pierced through an I-shaped weather-resistant steel side
  • A method for manufacturing a main girder with a hanging point pierced through an I-shaped weather-resistant steel side
  • A method for manufacturing a main girder with a hanging point pierced through an I-shaped weather-resistant steel side

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Embodiment

[0035] see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , which is a method for manufacturing the main girder with the I-shaped weathering steel side with the hanging point pierced by the embodiment of the present invention, such as figure 1 As shown, the method includes the production of unit elements, and each unit element is manufactured according to the design requirements, and the unit elements include a web unit, an upper horizontal plate unit, a lower horizontal plate unit, a nozzle partition joint plate unit, and a beam web joint plate unit, web vertical stiffener unit, and web transverse stiffener unit; when the web unit is manufactured, the steel plate is first cut to the required size, and after cutting, it is flattened and corrected. The milling machine mills the slope, processes the groove and assembles it and welds it. After passing the weld seam flaw detection, it is p...

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Abstract

The invention discloses a method for manufacturing a main girder with an I-shaped weather-resistant steel edge with a hanging point passing through. The method comprises unit unit manufacturing, I-shaped assembly welding, and assembly welding of an air nozzle partition plate joint plate unit, a beam web joint plate unit, and a web joint plate unit. The vertical stiffener unit of the plate, the transverse stiffener unit of the web plate, the milling hole of the lifting point pulling plate, welding the shear nails, cutting the two cut ends in the factory, marking the center of the lifting point pulling plate as the reference after welding the shear nails, and cutting The datum end of the upper horizontal plate element, web element and lower horizontal plate element. The method provided by this application decomposes each assembly unit in a modular manner, the assembly and welding sequence is reasonable, the welding process is advanced, the degree of automation is high, the welding deformation is small, and the assembly accuracy is high. And precision, achieved good economic results.

Description

technical field [0001] The invention relates to the technical field of large-span steel-concrete combined beams, in particular to a method for manufacturing a main girder with an I-shaped weather-resistant steel edge through which lifting points pass. Background technique [0002] The steel-concrete composite beam is becoming a popular structural form for long-span bridges. The side main girder is connected with the beam and the air nozzle as a whole. The structure of the side main girder is complex and requires high manufacturing precision. The side main girder is made of weathering steel with high welding process requirements and a large amount of welding, which is difficult and difficult. Therefore, a reasonable welding sequence and welding process is the key to ensure the geometric accuracy of the rod. Contents of the invention [0003] The invention provides a method for manufacturing a main girder with an I-shaped weather-resistant steel side through which a hanging...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00E01D1/00
CPCB23P15/00E01D1/00
Inventor 李华冰尹春明张帆孙树松乔新旺
Owner CHINA RAILWAY SHANQIAO GRP CO LTD
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