CN220415391U - I-steel embedded connecting component of tunnel supporting steel arch frame - Google Patents
I-steel embedded connecting component of tunnel supporting steel arch frame Download PDFInfo
- Publication number
- CN220415391U CN220415391U CN202321992727.3U CN202321992727U CN220415391U CN 220415391 U CN220415391 U CN 220415391U CN 202321992727 U CN202321992727 U CN 202321992727U CN 220415391 U CN220415391 U CN 220415391U
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- Prior art keywords
- steel
- channel
- channel steel
- arch
- tunnel supporting
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 145
- 239000010959 steel Substances 0.000 title claims abstract description 145
- 238000010276 construction Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 210000001503 joint Anatomy 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses an embedded connecting member of a tunnel supporting steel arch frame I-steel, which is arranged between a first I-steel and a second I-steel and comprises a first channel steel, a second channel steel and a third I-steel; the first channel steel and the second channel steel are welded on two sides of the third I-steel respectively, the first channel steel is fixedly connected with the first I-steel through a bolt assembly, and the second channel steel is fixedly connected with the second I-steel through a bolt assembly. The connecting member has the advantages of simple structure, modularized production, convenient and quick connection construction process, labor hour saving and high connection strength.
Description
Technical Field
The utility model relates to the technical field of tunnel support, in particular to a tunnel support steel arch I-steel embedded connecting component.
Background
In tunnel construction engineering, the primary support type of the tunnel is very important to the influence of structural stability, and the support of the steel arch frame manufactured by the section steel becomes the main stream of application. The tunnel steel arch centering used at present is formed by combining and assembling I-steel section by section to form a set of whole, and is used for supporting the tunnel, preventing soil and rock mass above the tunnel from collapsing down and ensuring construction safety. In order to ensure the strength, rigidity and bearing capacity of the steel arch, the adopted I-steel is of larger specification, the wing plates and the web plates of the I-steel are thicker, the overall dimension is larger, the whole steel arch is formed by welding a plurality of sections of I-steel, and the manufactured steel arch is heavier. In order to facilitate the transportation and installation of the steel arch, generally, a steel arch is divided into a plurality of sections, and then assembled during primary support construction, two adjacent sections of steel arch units are connected through connecting joints, the existing connecting piece is generally connected with the steel arch units through connecting steel plates and bolts, for example, the two ends of each section of steel arch unit are welded with the connecting steel plates, connecting through holes are drilled in the connecting steel plates, and bolts penetrate through the connection of the two connecting steel plates and are fastened through nuts during construction. The steel plate bolt fixing connection mode needs to temporarily process arch frame closed units with different length specifications according to field requirements, and is time-consuming and labor-consuming and poor in field operability. In order to improve the stability of connection, four bolts are generally required to be used for connection, and in connection construction, bearing construction is required before bolting the bolts, the efficiency is relatively low, and construction staff often install the bolts for convenience, so that the connection part is easy to lose efficacy under the action of load, the construction safety is seriously jeopardized, and the bearing capacity of the primary support of the tunnel is seriously influenced.
Disclosure of Invention
The utility model aims to provide the I-steel embedded connecting member for the tunnel supporting steel arch, which has the advantages of simple structure, modularized production, convenient and quick connecting construction process, labor hour saving and high connecting strength.
In order to achieve the purpose of the utility model, the technical scheme adopted is as follows:
the connecting component is arranged between the first I-steel and the second I-steel and comprises a first channel steel, a second channel steel and a third I-steel; the first channel steel and the second channel steel are welded on two sides of the third I-steel respectively, the first channel steel is fixedly connected with the first I-steel through a bolt assembly, and the second channel steel is fixedly connected with the second I-steel through a bolt assembly.
Therefore, the first I-steel and the second I-steel are fixedly connected through the connecting component, the connecting component replaces the traditional connecting plate structure, and three parts of the connecting component are prefabricated and welded in a factory to form a whole.
The bolt assembly includes a bolt, a flat washer, a spring washer, and a nut. And the bolt component passes through the reserved matching bolt holes of the channel steel and the I-steel web plate and bolts and fixes the channel steel and the I-steel web plate.
The appearance height of the first channel steel and the second channel steel is equal to the distance between the upper flange plate and the lower flange plate of the first I-steel and the second I-steel. The channel steel is matched and embedded into the space between the upper flange plate and the lower flange plate of the I-steel, and the mortise-tenon joint effect is formed at the joint by utilizing the shape of the profile steel, so that the mechanical property of the joint is greatly improved.
The rear end of the first channel steel cannot exceed the front end of the second I-steel, and the front end of the second channel steel cannot exceed the rear end of the first I-steel. The setting of connection structure like this, when first I-steel and second I-steel butt joint, first I-steel rear end stretches into to first channel-section steel front end, and second channel-section steel rear end stretches into second I-steel front end, does not need the workman to drag the top all the time just can the mounting bolt after forming first channel-section steel and second channel-section steel lock joint, reduces the degree of difficulty that the workman installs the connection.
The utility model has the following advantages:
1. the connecting method of the embedded connecting member of the I-steel of the tunnel supporting steel arch frame adopts mortise and tenon type mutual buckling, has simple structure, welds the first channel steel and the second channel steel with the third I-steel in a factory, does not need bolt butt joint during site construction, can realize high-strength connection by only installing one bolt, and has strong bearing capacity after connection, strong joint shearing capacity and more excellent stress performance. The butt joint precision is high, can effectively transfer the load, has guaranteed the stability of steel bow member, has solved the condition that general steel bow member connection constructor needs to install a plurality of bolts to and few installation bolts, has improved the security of construction.
2. After the connecting component is buckled with the first I-steel and the second I-steel, a worker is not required to drag the top all the time to install the bolts, and the difficulty of installation and connection of the worker is reduced. The third I-steel in the connecting component can be manufactured by cutting the surplus materials of the steel arch, so that the material is saved, and the modularized assembly manufacturing can be realized.
Drawings
FIG. 1 is a schematic diagram of the connection structure of the present utility model with a first I-steel and a second I-steel;
fig. 2 is an external structural schematic view of the connection member;
FIG. 3 is an exploded view of the connection structure of the various parts;
FIG. 4 is a schematic view of the connection structure of the working states of the parts;
the names corresponding to the serial numbers in the figures are:
1-first I-steel; 2-second I-steel; 3-third I-steel; 4-a first channel steel; 5-a second channel steel; 6-bolt assembly.
Detailed Description
Example 1
The connecting component is arranged between the first I-steel 1 and the second I-steel 2 and comprises a first channel steel 4, a second channel steel 5 and a third I-steel 3; the first channel steel 4 and the second channel steel 5 are welded on two sides of the third I-steel 3 respectively, the first channel steel 4 is fixedly connected with the first I-steel 1 through a bolt assembly 6, and the second channel steel 5 is fixedly connected with the second I-steel 2 through a bolt assembly.
The bolt assembly 6 comprises a bolt, a flat washer, a spring washer and a nut.
The heights of the appearance of the first channel steel 4 and the second channel steel 5 are equal to the distance between the upper flange plate and the lower flange plate of the first I-steel 1 and the second I-steel 2.
The rear end of the first channel steel 4 does not exceed the front end of the second I-steel 2, and the front end of the second channel steel 5 does not exceed the rear end of the first I-steel 1.
Claims (4)
1. The utility model provides a tunnel support steel bow member I-steel embedded connecting element which characterized in that: the connecting component is arranged between the first I-steel (1) and the second I-steel (2) and comprises a first channel steel (4), a second channel steel (5) and a third I-steel (3); the first channel steel (4) and the second channel steel (5) are welded on two sides of the third I-steel (3) respectively, the first channel steel (4) and the first I-steel (1) are fixedly connected through a bolt assembly (6), and the second channel steel (5) and the second I-steel (2) are fixedly connected through the bolt assembly.
2. A tunnel supporting steel arch i-steel embedded connection member according to claim 1, wherein: the bolt assembly (6) comprises a bolt, a flat washer, a spring washer and a nut.
3. A tunnel supporting steel arch i-steel embedded connection member according to claim 1, wherein: the heights of the appearance of the first channel steel (4) and the second channel steel (5) are equal to the distance between the upper flange plate and the lower flange plate of the first I-steel (1) and the second I-steel (2).
4. A tunnel supporting steel arch i-steel embedded connection member according to claim 1, wherein: the rear end of the first channel steel (4) does not exceed the front end of the second I-steel (2), and the front end of the second channel steel (5) does not exceed the rear end of the first I-steel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321992727.3U CN220415391U (en) | 2023-07-27 | 2023-07-27 | I-steel embedded connecting component of tunnel supporting steel arch frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321992727.3U CN220415391U (en) | 2023-07-27 | 2023-07-27 | I-steel embedded connecting component of tunnel supporting steel arch frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220415391U true CN220415391U (en) | 2024-01-30 |
Family
ID=89654111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321992727.3U Active CN220415391U (en) | 2023-07-27 | 2023-07-27 | I-steel embedded connecting component of tunnel supporting steel arch frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220415391U (en) |
-
2023
- 2023-07-27 CN CN202321992727.3U patent/CN220415391U/en active Active
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