CN211666739U - Foot protection device for steel arch frame of tunnel - Google Patents
Foot protection device for steel arch frame of tunnel Download PDFInfo
- Publication number
- CN211666739U CN211666739U CN201922258030.3U CN201922258030U CN211666739U CN 211666739 U CN211666739 U CN 211666739U CN 201922258030 U CN201922258030 U CN 201922258030U CN 211666739 U CN211666739 U CN 211666739U
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- connecting plate
- tunnel
- steel arch
- foot
- protective
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Abstract
The utility model provides a tunnel steel bow member banket device, the device includes: each foot of the arch frame is sleeved with a protective sleeve; a connecting plate is arranged between the protective sleeves sleeved on any two adjacent foot protectors. The utility model discloses in, establish the protective sheath at the footing overcoat of bow member, can avoid the steelframe connecting plate to be polluted by the shotcrete, simultaneously, the connecting plate of placing on two adjacent protective sheaths can guarantee that the construction joint level between the upper and lower step shotcrete is neat to improve construction quality, guarantee that tunnel preliminary bracing is stable and safe. After the construction of the sprayed concrete is finished, the protective sleeve and the connecting plate can be taken out, and the repeated utilization of the tunnel steel arch frame foot protection device is realized. The filler is filled between the protective sleeve and the bottom foot, so that the steel frame connecting plate can be prevented from being polluted and the connecting bolt hole can be prevented from being blocked when the concrete is sprayed.
Description
Technical Field
The utility model relates to a tunnel bow member footing protection technical field particularly, relates to a tunnel steel bow member banket device.
Background
For a long time, in the construction of tunnel engineering, because no anti-pollution measures are taken when the steel arches of the upper and lower steps are connected, the steel arch connecting plate is covered by sprayed concrete, the connection of the joint plate is not firm, and the secondary cleaning of the sprayed concrete is labor-consuming, time-consuming and extremely uneconomical; meanwhile, under the condition that the foot protector is not arranged, the construction joints between the concrete of the upper step and the lower step cannot be guaranteed to be neat, the construction quality of the sprayed concrete of the primary tunnel support is affected, serious persons or longitudinal cracks of the sprayed concrete occur, and the primary tunnel support is stable and safe.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a tunnel steel bow member banket device aims at solving present bow member connecting plate and polluted and the crooked problem of construction joint between the upper and lower step shotcrete by shotcrete.
The utility model provides a tunnel steel bow member banket device, the device includes: each foot of the arch frame is sleeved with a protective sleeve; a connecting plate is arranged between the protective sleeves sleeved on any two adjacent foot protectors.
Further, in the above tunnel steel arch foot protection device, each protection cover includes: a base plate; and the bottom edges of the side plates are connected with the bottom plate and are enclosed into a semi-enclosed structure.
Furthermore, in the tunnel steel arch foot protection device, the opening position of the semi-surrounding structure corresponds to the surrounding rock surface.
Further, in the tunnel steel arch foot protection device, in the semi-enclosed structure, one side plate opposite to the opening is provided with a first handle.
Further, in the above tunnel steel arch foot protection device, the bottom of each protection sleeve is provided with a cushion block.
Furthermore, in the tunnel steel arch foot protection device, each connecting plate is provided with a second handle.
Furthermore, in the tunnel steel arch frame foot protection device, the gap between the protection sleeve and the corresponding foot is filled with filler.
Furthermore, in the tunnel steel arch foot protection device, the protection sleeve is made of steel.
Furthermore, in the tunnel steel arch frame foot protection device, the connecting plate is made of steel.
The utility model discloses in, establish the protective sheath at the footing overcoat of bow member, can avoid the steelframe connecting plate to be polluted by the shotcrete, simultaneously, the connecting plate of placing on two adjacent protective sheaths can guarantee that the construction joint level between the upper and lower step shotcrete is neat to improve construction quality, guarantee that tunnel preliminary bracing is stable and safe. After the construction of the sprayed concrete is finished, the protective sleeve and the connecting plate can be taken out, and the repeated utilization of the tunnel steel arch frame foot protection device is realized. The filler is filled between the protective sleeve and the bottom foot, so that the steel frame connecting plate can be prevented from being polluted and the connecting bolt hole can be prevented from being blocked when the concrete is sprayed.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a front view of a tunnel steel arch foot protection device installed on a footing, according to an embodiment of the present invention;
fig. 2 is a top view of the tunnel steel arch foot protection device provided in the embodiment of the present invention installed on the footing;
fig. 3 is a side view of the tunnel steel arch foot protection device provided by the embodiment of the present invention installed on the footing;
fig. 4 is a schematic structural view of a protective sleeve in the tunnel steel arch foot protection device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a connecting plate in a tunnel steel arch foot protection device provided by the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 3, fig. 1 shows a schematic structural view of a foot protection device for a tunnel steel arch 30 provided by the embodiment, and as shown in fig. 1 to 3, the device comprises: the arch centering 30 comprises a protective sleeve 10 and a connecting plate 20, wherein the arch centering 30 is provided with a plurality of feet, a steel protective sleeve 10 is sleeved outside each foot and a steel frame connecting plate 31 connected with each foot, a cushion block 40 made of concrete is arranged below each protective sleeve 10, and the cushion block 40 is placed on the ground 50. A steel connecting plate 20 is arranged between any two adjacent protective sleeves 10. When the protective sheath 10 is sleeved outside the footing, a gap exists between the protective sheath 10 and the footing, and the gap is filled with a filler, wherein the filler can be sand during specific implementation.
When the protective sleeve is used, firstly, a plurality of cushion blocks 40 are placed between the footing and the ground 50, then the protective sleeve 10 is inserted between the footing and the cushion blocks 40, the footing and the steel frame connecting plate 31 connected with the footing are all clamped into the protective sleeve 10, finally, the connecting plate 20 is placed on two adjacent protective sleeves 10, and the gap between the protective sleeve 10 and the footing is filled with sand. And after the concrete spraying construction is finished, the protective sleeve 10 and the connecting plate 20 are quickly pulled out.
In this embodiment, protective sheath 10 is established to the footing overcoat at bow member 30, can avoid steelframe connecting plate 31 to be polluted by the shotcrete, and simultaneously, the connecting plate 20 of placing on two adjacent protective sheaths 10 can guarantee that the construction joint level between the upper and lower step shotcrete is neat to improve construction quality, guarantee tunnel preliminary bracing stability and safety. After the construction of the sprayed concrete is finished, the protective sleeve 10 and the connecting plate 20 can be taken out, and the repeated utilization of the tunnel steel arch frame foot protection device is realized. The filler is filled between the protective sleeve 10 and the bottom foot, so that the steel frame connecting plate 31 can be prevented from being polluted and the connecting bolt hole can be prevented from being blocked when the concrete is sprayed.
Referring to fig. 4, each sleeve 10 includes: bottom plate 11 and a plurality of curb plate 12, bottom plate 11 level are placed, and each curb plate 12 is vertical to be placed, and the base of each curb plate 12 all is connected with bottom plate 11, and simultaneously, each curb plate 12 encloses on bottom plate 11 and establishes into a semi-enclosed structure. Referring again to fig. 1 and 3, the protective casing 10 is inserted into the bottom of the steel frame connecting plate 31 through the opening 14 of the semi-enclosed structure, so that the bottom plate 11 and the side plates 12 enclose the bottom and the steel frame connecting plate 31, and after the insertion, the opening 14 of the semi-enclosed structure is positioned corresponding to the surrounding rock surface 60. Referring again to fig. 4, of the side panels 12, one side panel 12 opposite to the opening 14 of the semi-enclosed structure is provided with a first pull tab 13, and the first pull tab 13 is located at the outer side of the semi-enclosed structure, so that the protective case 10 can be easily withdrawn by the first pull tab 13. Referring to fig. 5, a second pull handle 21 is welded to an upper surface of each connection plate 20, and the connection plate 20 can be easily withdrawn by the second pull handle 21.
In conclusion, in this embodiment, the protective sleeves 10 are sleeved on the bottom of the arch frame 30, so that the steel frame connecting plates 31 can be prevented from being polluted by sprayed concrete, and meanwhile, the connecting plates 20 placed on two adjacent protective sleeves 10 can ensure that the construction joints between the sprayed concrete of the upper step and the sprayed concrete of the lower step are neat in level, thereby improving the construction quality and ensuring the stability and safety of the primary tunnel support. After the construction of the sprayed concrete is finished, the protective sleeve 10 and the connecting plate 20 can be taken out, and the repeated utilization of the tunnel steel arch frame foot protection device is realized. The filler is filled between the protective sleeve 10 and the bottom foot, so that the steel frame connecting plate 31 can be prevented from being polluted and the connecting bolt hole can be prevented from being blocked when the concrete is sprayed.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A tunnel steel arch foot protection device is characterized by comprising:
each foot of the arch frame is sleeved with one protective sleeve;
the connecting plate, arbitrary adjacent two the banket overcoat is established all set up one between the protective sheath the connecting plate.
2. The tunnel steel arch foot protector of claim 1, wherein each of the protective sleeves comprises:
a base plate;
and the bottom edge of each side plate is connected with the bottom plate and is enclosed into a semi-enclosed structure.
3. The tunnel steel arch foot guard according to claim 2,
the opening position of the semi-surrounding structure corresponds to the surrounding rock surface.
4. The tunnel steel arch foot guard according to claim 2 or 3,
in the semi-surrounding structure, one side plate opposite to the opening of the semi-surrounding structure is provided with a first handle.
5. The tunnel steel arch foot guard according to claim 1,
and a cushion block is arranged at the bottom of each protective sleeve.
6. The tunnel steel arch foot guard according to claim 1,
and each connecting plate is provided with a second handle.
7. The tunnel steel arch foot guard according to claim 1,
and a gap between the protective sleeve and the corresponding foot is filled with filler.
8. The tunnel steel arch foot guard according to claim 1,
the protective sleeve is made of steel.
9. The tunnel steel arch foot guard according to claim 1,
the connecting plate is made of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922258030.3U CN211666739U (en) | 2019-12-16 | 2019-12-16 | Foot protection device for steel arch frame of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922258030.3U CN211666739U (en) | 2019-12-16 | 2019-12-16 | Foot protection device for steel arch frame of tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211666739U true CN211666739U (en) | 2020-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922258030.3U Active CN211666739U (en) | 2019-12-16 | 2019-12-16 | Foot protection device for steel arch frame of tunnel |
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| Country | Link |
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| CN (1) | CN211666739U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339016A (en) * | 2021-06-08 | 2021-09-03 | 中交一公局集团有限公司 | Device for controlling connection accuracy and primary support flatness of upper and lower steel plates in tunnel |
-
2019
- 2019-12-16 CN CN201922258030.3U patent/CN211666739U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339016A (en) * | 2021-06-08 | 2021-09-03 | 中交一公局集团有限公司 | Device for controlling connection accuracy and primary support flatness of upper and lower steel plates in tunnel |
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