CN211144522U - Snap-in connection for steel arch segments of tunnels - Google Patents
Snap-in connection for steel arch segments of tunnels Download PDFInfo
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- CN211144522U CN211144522U CN201921249223.6U CN201921249223U CN211144522U CN 211144522 U CN211144522 U CN 211144522U CN 201921249223 U CN201921249223 U CN 201921249223U CN 211144522 U CN211144522 U CN 211144522U
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Abstract
A buckle type connecting device suitable for a steel arch section of a tunnel is characterized in that the steel arch is divided into n sections of steel arches, wherein n is a positive integer not less than 2, two adjacent sections of steel arches in the n sections of steel arches are connected through a hinge type chain hinge, the hinge type chain hinge comprises a chain hinge shaft positioned at the end part and two connecting steel plates which are connected with the chain hinge shaft and can respectively rotate around the chain hinge shaft, and the two connecting steel plates are also respectively fixed on the end surfaces of the two adjacent sections of steel arches; the two connecting steel plates are connected in a snap-fit manner. The utility model discloses the security is higher and work efficiency is higher.
Description
Technical Field
The utility model belongs to the technical field of the underground works construction and specifically relates to a buckle formula connecting device suitable for steel bow member festival section in tunnel is related to.
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 conventional method, after each round of tunnel excavation is finished, workers are generally required to complete positioning of the steel arch under the condition of approaching 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 lower and lower not enough of work efficiency of security that has had steel to encircle locate mode, the utility model provides a higher and higher buckle formula connecting device who is applicable to the steel bow member festival section in tunnel of work efficiency of security.
The utility model provides a technical scheme that its technical problem adopted is:
a buckle type connecting device suitable for a steel arch section of a tunnel is characterized in that two adjacent steel arches in the n steel arches are connected through a hinge type chain hinge, the hinge type chain hinge comprises a chain hinge shaft positioned at the end part and two connecting steel plates which are connected with the chain hinge shaft and can rotate around the chain hinge shaft respectively, and the two connecting steel plates are also fixed on the end surfaces of the two adjacent steel arches respectively; the two connecting steel plates are connected in a snap-fit manner.
Furthermore, a buckling position is arranged on one of the connecting steel plates, a buckling head is arranged on the other connecting steel plate, and the buckling position is matched with the buckling head.
Preferably, the clamping position and the buckling head are at least two groups.
In the scheme, when the steel arch centering is unfolded in place, the adjacent two sections of steel arches are fixed through the buckle structures on the two connecting steel plates, so that the fixed support of the steel arch centering is realized.
And a hinge shaft of the hinge type hinge is positioned on the inner side of the steel arch frame and is vertical 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 block diagram of a snap-in connection of a steel arch segment suitable for use in a tunnel.
Figure 2 is a schematic view of a hinge.
In the figure, 1-steel arch, 2-hinge, 3-hinge shaft, 4-connecting steel plate, 5-buckle position and 6-buckle head.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 and 2, a clip type connecting device for a steel arch section of a tunnel, the steel arch being divided into n sections of steel arches 1, where n is a positive integer not less than 2, is characterized in that two adjacent sections of steel arches in the n sections of steel arches are connected by a hinge type hinge 2, the hinge type hinge 2 includes a hinge shaft 3 located at an end portion and two connecting steel plates 4 connected to the hinge shaft and rotatable around the hinge shaft respectively, and the two connecting steel plates 4 are further fixed at end surfaces of the two adjacent sections of steel arches 1 respectively; the two connecting steel plates 4 are connected in a snap-fit manner.
Furthermore, a buckling position 5 is arranged on one of the connecting steel plates, a buckling head 6 is arranged on the other connecting steel plate, and the buckling position 5 is matched with the buckling head 6.
Preferably, the number of the buckling positions 5 and the buckling heads 6 is at least two.
In the scheme, when the steel arch centering is unfolded in place, the adjacent two sections of steel arches are fixed through the buckle structures on the two connecting steel plates 4, so that the fixed support of the steel arch centering is realized.
And a hinge shaft of the hinge type hinge 2 is positioned on the inner side of the steel arch frame and is vertical 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 structure of the snap-in connecting device of the embodiment is shown in fig. 1 and fig. 2, and comprises five sections of steel arches 1, wherein two adjacent sections of steel arches 1 are connected through a hinge type hinge 2 in the five sections of steel arches 1. 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. The two connecting steel plates 4 are respectively provided with 5 and welded; when the steel arch 1 frame is unfolded in place, the adjacent two sections of steel arches 1 are structurally fixed with the buckling positions 5 and the buckling heads 6 of the buckles, so that the fixed support of the steel arch 1 frame 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.
A method of installing a snap-in connection for a steel arch segment for a tunnel, comprising the steps of:
(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) and welding other parts except the arch springing on the newly erected steel arch frame with the previously installed steel arch 1 frame by adopting steel bars.
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 (4)
1. A buckle type connecting device suitable for a steel arch section of a tunnel is characterized in that two adjacent steel arches in the n steel arches are connected through a hinge type chain hinge, the hinge type chain hinge comprises a chain hinge shaft positioned at the end part and two connecting steel plates which are connected with the chain hinge shaft and can rotate around the chain hinge shaft respectively, and the two connecting steel plates are also fixed on the end surfaces of the two adjacent steel arches respectively; the two connecting steel plates are connected in a snap-fit manner.
2. A snap-on connection for a steel arch segment of a tunnel according to claim 1, wherein one of the connection steel plates is provided with a snap-on location and the other connection steel plate is provided with a snap-on head, said snap-on location cooperating with said snap-on head.
3. A snap-on connection adapted for use in a steel arch segment of a tunnel according to claim 2, wherein the snap-on locations and snap-on heads are at least two or more sets.
4. A snap-on connection for a steel arch section of a tunnel according to any one of claims 1 to 3, wherein the hinge axis of the hinge is located on the inner side of the steel arch and is perpendicular to the tunnel excavation face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921249223.6U CN211144522U (en) | 2019-08-05 | 2019-08-05 | Snap-in connection for steel arch segments of tunnels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921249223.6U CN211144522U (en) | 2019-08-05 | 2019-08-05 | Snap-in connection for steel arch segments of tunnels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211144522U true CN211144522U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921249223.6U Active CN211144522U (en) | 2019-08-05 | 2019-08-05 | Snap-in connection for steel arch segments of tunnels |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486056A (en) * | 2019-08-05 | 2019-11-22 | 浙江工业大学 | The buckle-type attachment device and its installation method of steel arch-shelf segment suitable for tunnel |
-
2019
- 2019-08-05 CN CN201921249223.6U patent/CN211144522U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486056A (en) * | 2019-08-05 | 2019-11-22 | 浙江工业大学 | The buckle-type attachment device and its installation method of steel arch-shelf segment suitable for tunnel |
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