CN218405453U - Large-tonnage steel pipe supporting structure - Google Patents
Large-tonnage steel pipe supporting structure Download PDFInfo
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- CN218405453U CN218405453U CN202222121695.1U CN202222121695U CN218405453U CN 218405453 U CN218405453 U CN 218405453U CN 202222121695 U CN202222121695 U CN 202222121695U CN 218405453 U CN218405453 U CN 218405453U
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Abstract
The utility model provides a large-tonnage steel pipe bearing structure, include the steel pipe and set up in the angle steel in the steel pipe outside. The angle steel is finished equilateral angle steel, and 4 angle steels are uniformly, symmetrically and completely arranged on the outer side of the steel pipe; the angle steel length is the same as the steel pipe length, the end part of the angle steel flange is tightly attached to the outer side of the steel pipe, and the angle steel flange and the steel pipe are welded together by a through long angle welding seam with the same steel pipe length, so that the steel pipe and the angle steel form integral stress, the support rigidity and the bearing capacity of the steel pipe can be effectively improved, the distance between the steel pipe supports is enlarged, the number of the steel supports in foundation pit support is reduced, the construction operation space is increased, the construction efficiency is improved, the investment is saved, and the steel pipe support structure is simple in process, low in manufacturing cost and convenient to popularize.
Description
Technical Field
The utility model belongs to the technical field of underground works excavation supporting, concretely relates to large-tonnage steel pipe bearing structure.
Background
In the current underground deep foundation pit supporting engineering, the steel pipe support is widely adopted due to the advantages of light weight, high mounting and dismounting speed, recyclability and the like. However, as the foundation pit engineering is deeper and deeper, the water and soil pressure outside the foundation pit is higher and higher, and the stress requirement of the foundation pit support cannot be met gradually due to the limited axial bearing capacity of the existing steel pipe support. In order to solve the problem of insufficient bearing capacity of the steel pipe supports, the steel pipe supports are usually horizontally or vertically encrypted or a double-spliced steel pipe support form is directly adopted to ensure the safety and stability of a foundation pit support system, so that the number of the steel pipe supports is increased, the investment of the foundation pit support is increased, the effective space between the steel pipe supports is reduced, the construction efficiency is influenced, and the construction period of foundation pit engineering is increased.
Disclosure of Invention
In order to overcome the problem that exists among the background art, the utility model provides a large-tonnage steel pipe bearing structure through set up the angle steel in the current steel pipe support outside, increases steel pipe support cross sectional area, improves steel pipe rigidity and stability, and then improves the axial pressurized bearing capacity that the steel pipe supported, draws vertical and horizontal interval between the adjacent steel shotcrete big, reduces steel shotcrete quantity in the excavation supporting, increases construction operation space, improves the efficiency of construction.
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
a large-tonnage steel tube supporting structure comprises a steel tube and angle steel arranged on the outer side of the steel tube; the angle steel is arranged on the outer side of the steel pipe and is arranged along the longitudinal length of the steel pipe; and the flanges of the angle steel are welded with the steel pipe by fillet welds, so that the steel pipe and the angle steel form integral stress, the support rigidity and stability of the steel pipe are improved, and the axial compression bearing capacity of the steel pipe support is improved.
Furthermore, the angle steel adopts finished product equal-edge angle steel on the steel market, special customization is not needed, the angle steel is selected as far as possible from the type with larger cross-sectional area, and the preferred type is not smaller than L200 multiplied by 16.
Furthermore, 4 angle steels are selected and uniformly and symmetrically arranged on the outer side of the steel pipe, and the flange end parts of the angle steels are tightly attached to the outer side of the steel pipe.
Furthermore, the size of a welding leg of the fillet weld between the end part of the angle steel flange and the steel pipe needs to be determined according to stress calculation, the minimum size of the welding leg is not less than 8mm, and the maximum size of the welding leg is not more than the wall thickness of the steel pipe and is not more than the thickness of the angle steel flange.
Further, the angle steel and the fillet weld are arranged along the longitudinal length of the steel pipe, and the length of the angle steel and the length of the fillet weld are equal to the length of the steel pipe.
Further, the steel pipe is a circular steel pipe with the diameter of 609mm or 800mm and the wall thickness of 16mm or 20 mm.
The utility model has the advantages that:
1. the utility model discloses support the outside at current steel pipe and add and establish 4 angle steels to set up the fillet weld and carry out welded connection with steel pipe and angle steel, angle steel and fillet weld set up along the vertical logical length of steel pipe, under the prerequisite of not destroying existing steel pipe bearing structure, can effectively increase steel pipe support area, improve steel pipe support rigidity and stability, increase the axial pressurized bearing capacity that the steel pipe supported, and then can draw vertical and horizontal interval between the big steel shotcrete, reduce steel shotcrete quantity in the excavation supporting, increase construction operating space, improve the efficiency of construction, practice thrift the investment.
2. The utility model discloses a steel pipe and angle steel are ripe product on the market, need not special customization, simple process, and the cost is lower, facilitate promotion.
Drawings
Fig. 1 is a schematic structural view of the large-tonnage steel pipe supporting structure of the present invention.
Fig. 2 is a three-dimensional schematic diagram of the angle steel of the present invention.
The labels in the figures are: 11-steel pipe, 12-angle steel and 13-fillet weld.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following will make a detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings to facilitate understanding of the skilled person.
The large-tonnage steel pipe supporting structure shown in fig. 1 and 2 comprises a steel pipe 11 and angle steel 12 arranged on the outer side of the steel pipe; the angle steels 12 are preferably finished equiangular angles on the market, do not need special customization, are arranged in 4 numbers, and are uniformly and symmetrically arranged on the outer side of the steel pipe 11, and the flange end parts of the angle steels 12 are tightly attached to the outer side of the steel pipe 11; the end parts of the flanges of the angle steel 12 are welded and connected with the steel pipe 11 by using fillet welds 13, the leg size of the fillet welds 13 is determined according to stress calculation, the minimum leg size is not less than 8mm, and the maximum leg size is not more than the wall thickness of the steel pipe 11 and not more than the flange thickness of the angle steel 12; the angle steel 11 and the fillet weld 13 are both arranged along the longitudinal length of the steel pipe 12, and the lengths of the angle steel 12 and the fillet weld 13 are equal to the length of the steel pipe 11.
The steel pipe 11 is preferably a circular steel pipe with the diameter of 609mm or 800mm and the wall thickness of 16mm or 20mm, and the angle steel 12 is selected as large as possible in cross-sectional area, preferably not less than L200X 16.
The specific manufacturing implementation method of the embodiment is as follows:
1. selecting proper angle steel 12 according to the size of the steel pipe 11, specifically: the steel pipe 11 with the diameter 609mm and the wall thickness 16mm selects angle steel 12 with the model number of L200 multiplied by 16 or L200 multiplied by 18; the steel pipe 11 with the diameter of 800mm and the wall thickness of 16mm or 20mm adopts angle steel 12 with the model of L200 multiplied by 20 or L200 multiplied by 24.
2. And removing the antirust paint on the surface of the welded part of the steel pipe 11, installing the angle steel 12 to a preset position, fixing by spot welding, and then performing the fillet weld 13 arranged in the full length in a segmented and symmetrical manner according to the requirements of construction specifications, so that the influence of the fillet weld 13 on the steel pipe 11 is reduced as much as possible.
3. And (4) inspecting the construction quality of the fillet weld 13, and after the fillet weld 13 is qualified, performing secondary spraying on the damaged surface antirust paint. After the welding is finished and the quality is qualified, the steel pipe 11 and the angle steel 12 form an integrated steel pipe supporting structure.
It should be noted that the above-mentioned preferred embodiments illustrate rather than limit the technical solution of the present invention, and that, although the present invention has been described in detail with reference to the above-mentioned preferred embodiments, it should be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the present invention defined by the claims.
Claims (5)
1. The utility model provides a large-tonnage steel pipe bearing structure which characterized in that: comprises a steel pipe (11) and angle steel (12) arranged on the outer side of the steel pipe; angle steel (12) set up 4, and evenly, symmetrically arrange the steel pipe (11) outside, angle steel (12) edge of a wing tip is hugged closely steel pipe (11) outside adopts fillet weld (13) welded connection between angle steel (12) edge of a wing and steel pipe (11), makes steel pipe (11) and angle steel (12) form whole atress, improve steel pipe support rigidity, stability and bearing capacity.
2. The large-tonnage steel tube supporting structure as recited in claim 1, wherein: finished product equal-edge angle steel on the market is selected as the angle steel (12), special customization is not needed, and the model is not less than L200 multiplied by 16.
3. The large-tonnage steel pipe supporting structure defined in any one of claims 1-2, wherein: the fillet weld (13) needs to be determined according to stress calculation, the minimum leg size is not less than 8mm, and the maximum leg size is not greater than the wall thickness of the steel pipe (11) and not greater than the flange thickness of the angle steel (12).
4. The large-tonnage steel pipe supporting structure defined in any one of claims 1-2, wherein: the angle steel (12) and the fillet weld (13) are arranged along the longitudinal length of the steel pipe (11), and the length of the angle steel (12) and the length of the fillet weld (13) are equal to the length of the steel pipe (11).
5. The large-tonnage steel pipe supporting structure defined in any one of claims 1-2, wherein: the steel pipe (11) is a circular steel pipe with the diameter of 609mm or 800mm and the wall thickness of 16mm or 20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222121695.1U CN218405453U (en) | 2022-08-12 | 2022-08-12 | Large-tonnage steel pipe supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222121695.1U CN218405453U (en) | 2022-08-12 | 2022-08-12 | Large-tonnage steel pipe supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218405453U true CN218405453U (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222121695.1U Active CN218405453U (en) | 2022-08-12 | 2022-08-12 | Large-tonnage steel pipe supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218405453U (en) |
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2022
- 2022-08-12 CN CN202222121695.1U patent/CN218405453U/en active Active
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