A Tailored Welding Method for Large Diameter Steel Pipe Sheets

A large-diameter, steel pipe technology, applied in the field of large-diameter steel pipe tailor welding, can solve the problems of affecting the quality of welds, complicated splicing operations, easy to produce vertical welds, etc., to improve weld quality, reduce vertical welds, reduce The effect of welding difficulty

Active Publication Date: 2022-06-28
SINOHYDRO JIAJIANG HYDRAULIC MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The installation and splicing joints of large-section round steel pipes disclosed in this patent document are not suitable for tailor-welding of large-diameter steel pipe pieces. The welding difficulty is high, and vertical welds are likely to occur during the tailor-welding of the segments, which affects the quality of the weld seam, and the splicing operation is complicated.

Method used

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  • A Tailored Welding Method for Large Diameter Steel Pipe Sheets
  • A Tailored Welding Method for Large Diameter Steel Pipe Sheets
  • A Tailored Welding Method for Large Diameter Steel Pipe Sheets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] see Figure 1-Figure 5 , a method for tailor-welding large-diameter steel pipe pieces, comprising the following steps:

[0042] a. Press and fit the inner web on the arched surface of the base 1 of the large-diameter steel pipe piece tailor-welding tool through the inner web presser 5;

[0043] b. The longitudinal partitions are fixed by the longitudinal partition positioning member 4, and the longitudinal partitions are welded to the inner web, and a plurality of longitudinal partitions are fixed in sequence;

[0044] c. Hoist the horizontal partition, insert the horizontal partition between the two longitudinal partitions, pull the positioning rod 14 to snap the positioning bolt 15 into the fixing slot 18 of the positioning groove 16, and after the positioning bolts 15 on both sides are fixed in place, complete The fixing of the transverse partition, and then welding the transverse partition with the inner web and the adjacent longitudinal partition;

[0045] d. Acc...

Embodiment 2

[0048] see Figure 1-Figure 5 , a method for tailor-welding large-diameter steel pipe pieces, comprising the following steps:

[0049] a. Press and fit the inner web on the arched surface of the base 1 of the large-diameter steel pipe piece tailor-welding tool through the inner web presser 5;

[0050] b. The longitudinal partitions are fixed by the longitudinal partition positioning member 4, and the longitudinal partitions are welded to the inner web, and a plurality of longitudinal partitions are fixed in sequence;

[0051] c. Hoist the horizontal partition, insert the horizontal partition between the two longitudinal partitions, pull the positioning rod 14 to snap the positioning bolt 15 into the fixing slot 18 of the positioning groove 16, and after the positioning bolts 15 on both sides are fixed in place, complete The fixing of the transverse partition, and then welding the transverse partition with the inner web and the adjacent longitudinal partition;

[0052] d. Acc...

Embodiment 3

[0056] see Figure 1-Figure 5 , a method for tailor-welding large-diameter steel pipe pieces, comprising the following steps:

[0057] a. Press and fit the inner web on the arched surface of the base 1 of the large-diameter steel pipe piece tailor-welding tool through the inner web presser 5;

[0058] b. The longitudinal partitions are fixed by the longitudinal partition positioning member 4, and the longitudinal partitions are welded to the inner web, and a plurality of longitudinal partitions are fixed in sequence;

[0059] c. Hoist the horizontal partition, insert the horizontal partition between the two longitudinal partitions, pull the positioning rod 14 to snap the positioning bolt 15 into the fixing slot 18 of the positioning groove 16, and after the positioning bolts 15 on both sides are fixed in place, complete The fixing of the transverse partition, and then welding the transverse partition with the inner web and the adjacent longitudinal partition;

[0060] d. Acc...

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Abstract

The invention discloses a large-diameter steel pipe sheet tailor welding method, which belongs to the technical field of tunnel support equipment processing, and is characterized in that it comprises the following steps: a. Pressing and fitting the inner web plate on the large-diameter steel pipe sheet tailor-weld tooling On the arched surface of the base; b. Fix the longitudinal partition and weld the longitudinal partition to the inner web; c. Insert the transverse partition between the two longitudinal partitions, pull the positioning rod to snap the positioning bolt into the positioning groove In the fixed card slot, after the positioning bolts on both sides are fixed in place, the transverse partition, the inner web and the adjacent longitudinal partition are welded together; d. Put a stamp mark on the lower end of the fixed card slot, and finally hoist the outer web and Press and weld with the horizontal and vertical partitions. The present invention converts the vertical welds of all longitudinal partitions into flat welds by adopting the horizontal welding method, which can greatly reduce the vertical welds existing in segment welding, reduce the difficulty of welding, improve the quality of welds, and improve the quality of the entire joint The welding operation is simple and easy.

Description

technical field [0001] The invention relates to the technical field of tunnel support equipment processing, in particular to a tailor welding method for large-diameter steel pipe sheets. Background technique [0002] When excavating large-diameter tunnels, due to the geological conditions and the reliability requirements of the tunnels, steel pipe sheets are used for full end face support. The steel pipe sheet adopts a double-steel plate shear wall structure with transverse and longitudinal partitions. Depending on the installation position of the segment, the transverse baffle has different elevations relative to the bottom end of the single segment. There are a large number of vertical welds in the traditional vertical joining method, which is difficult to weld. In addition, there is also the problem of insufficient positioning accuracy of the transverse partitions and the longitudinal partitions. The relative elevations of the transverse diaphragms of different steel p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/18E21D11/24B23K37/02B23K37/04
CPCE21D11/18E21D11/24E21D11/183B23K37/02B23K37/04
Inventor 赵明周建平周兵代新启李健徐高峰李友明
Owner SINOHYDRO JIAJIANG HYDRAULIC MACHINERY
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