CN212614775U - Bolt buckle type connecting device suitable for steel arch frame section of tunnel - Google Patents
Bolt buckle type connecting device suitable for steel arch frame section of tunnel Download PDFInfo
- Publication number
- CN212614775U CN212614775U CN202020292373.1U CN202020292373U CN212614775U CN 212614775 U CN212614775 U CN 212614775U CN 202020292373 U CN202020292373 U CN 202020292373U CN 212614775 U CN212614775 U CN 212614775U
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- steel
- hinge
- sections
- bolt
- steel arch
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 74
- 239000010959 steel Substances 0.000 title claims abstract description 74
- 238000009412 basement excavation Methods 0.000 claims description 7
- 101150097977 arch-1 gene Proteins 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008093 supporting effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
A bolt buckle type connecting device suitable for steel arch frame sections of a tunnel is characterized in that an arch frame can be divided into n sections of steel arches, wherein n is a positive integer not less than 2, and two adjacent sections of the n sections of steel arches are connected through a hinge type chain. The utility model provides a bolt-buckle formula connecting device for steel bow member festival section in tunnel easily dismantles and detects, and work efficiency is higher, and the security is better.
Description
Technical Field
The utility model relates to the field of underground engineering construction, in particular to a bolt buckle type connecting device suitable for a steel arch frame segment of a tunnel,
background
When a tunnel is tunneled in poor surrounding rocks, a steel arch is one of necessary supporting members, particularly, if a section steel frame is reasonably and timely installed, the supporting effect can be immediately exerted, which is very important for guaranteeing construction safety and controlling formation deformation, and is incomparable with other supporting members. Under the existing conventional method, after each round of tunnel excavation is finished, workers are generally required to complete the positioning of a steel arch under the condition of being close to an excavation surface, and then an arch bridge is installed and arch feet are fixed. The erection method divides the steel arch frame into a plurality of sections, manually erects and installs the sections by sections, and then connects the sections by bolts, so that the construction safety is poor, the speed is low, the occupied operation cycle time is long, and the erection quality is also problematic. The current situation is improved to a certain extent, but the bolt screwing efficiency is not too high, the method has certain danger, and the method is not easy to disassemble and detect.
Disclosure of Invention
In order to overcome the defect that above-mentioned prior art exists, the utility model provides a bolt-lock formula connecting device for steel bow member festival section in tunnel easily dismantles and detects, and work efficiency is higher, and the security is better.
The utility model provides a technical scheme that its technical problem adopted is:
a bolt buckle type connecting device for steel arch frame sections of a tunnel is characterized in that an arch frame can be divided into n sections of steel arches, wherein n is a positive integer not less than 2, and two adjacent sections of the n sections of steel arches are connected through a hinge type chain.
Furthermore, the end part of the hinge type hinge is provided with a hinge shaft and two connecting steel plates which are connected with the hinge shaft and can rotate around the hinge shaft respectively, and the two connecting steel plates are also fixed on the end surfaces of two adjacent steel arches respectively.
Furthermore, corresponding bolt buckle structures are respectively arranged at corresponding positions on the two connecting steel plates; when the steel arch centering is unfolded in place, the adjacent two sections of steel arches are fixed through the bolt buckle structures on the two connecting steel plates, and the fixed support of the steel arch centering is realized.
Furthermore, the hinge shaft of the hinge type hinge is positioned on the inner side of the steel arch frame and is perpendicular to the tunnel excavation surface. Like this, when the steel bow member transversely expandes at the excavation face, when adopting and reserving core soil excavation method, the core soil can hinder the expansion of steel bow member, consequently the utility model relates to a steel bow member is particularly suitable for general tunnel.
The beneficial effects of the utility model are that: 1) the steel arch frame can be integrally folded after being processed, and transportation is convenient. 2) The installation is mainly mechanical installation and is manually assisted in positioning and connection. 3) One steel arch can be installed at one time, and the construction efficiency is high, the speed is high and the cost is low.
Drawings
FIG. 1 is a schematic view of the arrangement structure of the present invention;
FIG. 2 is a schematic view of a hinge type hinge and a bolt hole at the joint of adjacent steel arches of the present invention;
FIG. 3 is the schematic view of the plug of the present invention
FIG. 4 is a schematic view of the rear side of the steel arch after the installation of the joint
FIG. 5 is a schematic view of the inner side of the steel arch after the steel arch joint is installed
In the figure, 1-steel arch, 2-hinge, 3-hinge shaft, 4-connecting steel plate, 5-bolt hole, 6-bolt head, 7-bolt and 8-bolt tail.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 5, the snap-in type connecting device for the steel arch frame segments of the tunnel comprises five steel arches 1, wherein two adjacent steel arches 1 in the five steel arches 1 are connected through a hinge type hinge 2. The hinge type hinge 2 comprises a hinge shaft 3 and two connecting steel plates 4 which are connected with the hinge shaft 3 and can respectively rotate around the hinge shaft, and the two connecting steel plates 4 are respectively and fixedly connected with the end surfaces of two adjacent steel arches 1. Bolt holes 5 are formed in the two connecting steel plates 4; when the steel arch 1 is unfolded in place, the adjacent two sections of steel arches 1 are structurally fixed with the bolt holes 5 and the bolts 7, so that the fixed support of the steel arch 1 is realized. And a hinge shaft 3 of the hinge type hinge 2 is positioned on the inner side of the steel arch 1 and meets the condition that the hinge shaft 3 is vertical to the tunnel excavation surface.
The installation method of the bolt-button type connecting device suitable for the steel arch truss segment of the tunnel comprises the following steps:
(1) taking five sections of steel arches 1, sequentially connecting the five sections of steel arches by hinge type hinge joints 2 to form a whole, and then completely folding and conveying the steel arches to the bottom of the arch;
(2) lifting the top of the steel arch 1 frame by using a telescopic arm operation vehicle, erecting the folded steel arch 1 frame at a designed position, and then automatically unfolding;
(3) after the steel arch 1 frame is erected and positioned, welding and fixing the arch springing of the newly erected steel arch 1 frame and the arch springing of the steel arch 1 frame which is fixedly installed in the past by adopting steel bars;
(4) closing and fixing a hinge type hinge 2 between two adjacent sections of steel arches 1, and completely closing an upper steel plate and a lower steel plate;
(5) two bolts 7 are respectively inserted into the bolt holes 5 at two sides of the steel plate.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (3)
1. The bolt buckle type connecting device is suitable for steel arch frame sections of tunnels and is characterized in that an arch frame is divided into n sections of steel arches, wherein n is a positive integer not less than 2, and two adjacent sections of the n sections of steel arches are connected through a hinge type chain; the hinge type hinge is characterized in that a hinge shaft and two connecting steel plates which are connected with the hinge shaft and can rotate around the hinge shaft respectively are arranged at the end part of the hinge type hinge, and the two connecting steel plates are also fixed on the end surfaces of two adjacent steel arches respectively.
2. The bolt-buckle type connecting device for the steel arch section of the tunnel according to claim 1, wherein the two connecting steel plates are respectively welded with corresponding bolt-buckle structures at corresponding positions; when the steel arch frame is unfolded in place, the adjacent two sections of steel arches are fixed by the bolt buckle structure, so that the fixed support of the steel arch frame is realized.
3. The bolt-snap type connecting device for a steel arch section of a tunnel according to claim 1, wherein the hinge shaft of the hinge type hinge is located at an inner side of the steel arch such that the hinge shaft is perpendicular to the tunnel excavation surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020292373.1U CN212614775U (en) | 2020-03-11 | 2020-03-11 | Bolt buckle type connecting device suitable for steel arch frame section of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020292373.1U CN212614775U (en) | 2020-03-11 | 2020-03-11 | Bolt buckle type connecting device suitable for steel arch frame section of tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212614775U true CN212614775U (en) | 2021-02-26 |
Family
ID=74707975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020292373.1U Expired - Fee Related CN212614775U (en) | 2020-03-11 | 2020-03-11 | Bolt buckle type connecting device suitable for steel arch frame section of tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212614775U (en) |
-
2020
- 2020-03-11 CN CN202020292373.1U patent/CN212614775U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210226 |