CN212837859U - Steel arch frame locking device for unfavorable geological tunnel construction - Google Patents
Steel arch frame locking device for unfavorable geological tunnel construction Download PDFInfo
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- CN212837859U CN212837859U CN202021847684.6U CN202021847684U CN212837859U CN 212837859 U CN212837859 U CN 212837859U CN 202021847684 U CN202021847684 U CN 202021847684U CN 212837859 U CN212837859 U CN 212837859U
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- supporting shoe
- anchor rod
- support body
- steel arch
- tunnel construction
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Abstract
The utility model belongs to the technical field of tunnel engineering struts equipment and specifically relates to a steel arch frame lock foot device for unfavorable geology tunnel construction is related to, comprising a frame body, the support body is the arch, the position both sides that the support body is close to the arch springing are equipped with the supporting shoe, two the one end that the country rock was kept away from to the supporting shoe is provided with jointly and is used for the fixed fastening components of support body and supporting shoe, the anchor rod hole has all been seted up to the supporting shoe, the anchor rod has all been inserted in the anchor rod hole, the anchor rod all with the supporting shoe welding. This application has and arranges the support body both sides in the supporting shoe and need squeeze into the suitable position of stock to fix the supporting shoe in the suitable position of support body through fastening components, and with the welding between supporting shoe and the support body, then squeeze into the country rock with the stock through the anchor rod hole, through with stock and supporting shoe welding, it is fixed with the support body that passes through the supporting shoe with the stock, the support body homoenergetic made to the steel of different shapes can be stable fixed and the effect of locking.
Description
Technical Field
The application relates to the field of tunnel engineering supporting equipment, in particular to a steel arch frame locking device for unfavorable geological tunnel construction.
Background
The hydraulic tunnel engineering generally has the characteristics of long tunnel line, abundant underground water and complex geological conditions, a strong supporting construction mode is usually adopted in the construction process, and a steel arch frame is usually used for supporting surrounding rocks after excavation. The steel arch is anchored in the deep part of the surrounding rock by using a foot-locking anchor rod to prevent the steel arch from sinking or displacing so as to provide larger supporting resistance for the surrounding rock around the tunnel and prevent the surrounding rock from generating harmful excessive deformation. The existing connection between the lock leg anchor pipe and the steel arch is generally realized by welding the lock leg anchor pipe and the steel arch by adhering and spot welding and adding L-shaped short steel bars, and the lock leg anchor pipe is welded on the flange of the section steel, and the connection modes are easy to separate when the stress is large.
The chinese utility model patent that the prior art can refer to the grant bulletin number for CN208073515U discloses a support locking device of tunnel steel arch frame lock foot anchor pipe, including steel arch frame, channel-section steel, lock foot anchor pipe and L shaped steel muscle connecting piece, its characterized in that: welding channel steel along the longitudinal direction on one side of the steel arch frame, which is close to the surrounding rock; the lock leg anchor pipes are driven into surrounding rock at two sides of the steel frame through prefabricated holes in the channel steel, and the lock leg anchor pipes and the channel steel are welded firmly; welding the lock leg anchor pipe to the steel arch frame through an L-shaped steel bar connecting piece at the end part of the lock leg anchor pipe, wherein the L-shaped steel bar connecting piece is formed by bending steel bars; and the steel arch frame is anchored at the deep part of the surrounding rock through a foot locking anchor pipe on the channel steel.
In view of the above-mentioned related art, the inventor believes that the solution designs a firm connection device between the anchor rod and the steel arch by using the shape of the cross section of the steel arch, but the device has the disadvantage that the device is only suitable for the steel arch with the shape, and the applicability is low for the steel arch with the other shape.
SUMMERY OF THE UTILITY MODEL
In order to firmly lock the steel arch centering homoenergetic to various steel, prevent that the steel arch centering from shifting or subsiding, this application provides a steel arch centering locking foot device for unfavorable geological tunnel construction.
The application provides a steel arch frame lock foot device for unfavorable geological tunnel construction adopts following technical scheme:
the utility model provides a steel bow member lock foot device for unfavorable geology tunnel construction, includes the support body, the support body is the arch, the position both sides that the support body is close to the arch foot are equipped with the supporting shoe, two the one end that the country rock was kept away from to the supporting shoe is provided with jointly and is used for the fixed fastening components of support body and supporting shoe, the anchor rod hole has all been seted up to the supporting shoe, all inserted the stock in the anchor rod hole, the stock all with the supporting shoe welding.
Through adopting above-mentioned technical scheme, arrange the supporting shoe in the suitable position of stock need be squeezed into to the support body both sides, and fix the supporting shoe in the suitable position of support body through fastening components, and with the welding between supporting shoe and the support body, because support body and supporting shoe laminating, the face of weld is bigger, easily welding, can make the supporting shoe be connected inseparabler with the support body simultaneously, then squeeze into the country rock with the stock through the stock hole, through welding stock and supporting shoe, can realize the fixing between stock and supporting shoe and the support body, simultaneously, it is fixed with the support body to pass through the supporting shoe with the stock, can be used for the support body that different steel were made, all can be stable fixed and locking to the support body that different steel were made.
Preferably, the fastening assembly comprises a sliding hole formed in one end, far away from the surrounding rock, of the supporting block, a threaded rod is fixedly connected to the position, close to the sliding hole, of the other supporting block, the threaded rod is connected with the sliding hole in a sliding mode, and a nut is connected to one end, close to the sliding hole, of the threaded rod in a threaded mode.
Through adopting above-mentioned technical scheme, through passing the threaded rod slide opening, screw up the nut of one end, the fastening effect through the nut is all to applying fastening force to being close to the support body with two supporting shoes, realizes the fastening effect to the support body.
Preferably, the number of the fastening components is two, and the two fastening components are located at two ends of the supporting block parallel to the frame body.
Through adopting above-mentioned technical scheme, two fastening component's setting is located the support body both ends respectively, and the fastening component through both ends can make the fastening effect to the support body more stable.
Preferably, a fixing plate is arranged on one side, close to the frame body, of the sliding hole, the fixing plate is fixedly connected with the supporting block, the fixing plate is perpendicular to the supporting block, and the fixing plate is arranged in an arc shape equal to the radian of the frame body.
Through adopting above-mentioned technical scheme, when placing the support body both sides with the supporting shoe, with the fixed plate laminating to the support body on, increase and the area of contact of support body, for the welding provides abundant face of weld, prevent the stress fracture.
Preferably, a gasket made of an elastic material is arranged between the nut and the supporting block, and the gasket is in sliding connection with the threaded rod.
Through adopting above-mentioned technical scheme, the gasket can produce deformation when screwing up the nut, makes the effect of fastening better.
Preferably, the one end that the country rock was kept away from to the stock is close to the position fixedly connected with welded plate in anchor rod hole, will after the stock is squeezed into in the country rock, the welded plate can with the supporting shoe laminating.
Through adopting above-mentioned technical scheme, when welding stock and supporting shoe, through welding the welding plate to the supporting shoe, can increase area of contact, make the welding effect better, the lock foot is more firm, difficult disconnection.
Preferably, the anchor rod hole is in a strip shape, and the anchor rod hole and the frame body are arranged at a certain angle.
Through adopting above-mentioned technical scheme, the angle setting in anchor rod hole can make the angle when squeezing into the stock specific, prevents that the angle that the stock was squeezed into is not good to lead to the effect of lock foot not good.
Preferably, the anchor rod is arranged in a hollow mode, and one end, far away from the supporting block, of the anchor rod is provided with a grouting hole.
Through adopting above-mentioned technical scheme, carry out the slip casting to the stock through the slip casting pore pair stock of stock, can further fix the steel bow member, especially erect to the steel bow member of unfavorable geology section, the slip casting can effectively prevent the steel bow member displacement of sinking, plays effectual supporting effect.
Preferably, the anchor rod is externally provided with an external thread.
Through adopting above-mentioned technical scheme, the external screw thread of stock can increase the contact of stock and thick liquid, increase anchoring force.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the supporting block and the frame body are welded, the welding area of the fixing plate is increased, so that the supporting block and the frame body are welded firmly, two anchor rods are driven into the surrounding rock at a specific angle through the limiting of the anchor rod hole after winding, the anchoring and locking effects are achieved, then the welding plate is attached to the supporting block, the welding area is provided, the welding is firmer, the whole process is easy and convenient to operate, and the steel arch centering device has a better stable locking effect on steel arch centering with different shapes;
2. through the slip casting in to the stock, can realize the secondary of stock and fix, erect to the steel bow member of unfavorable geology section, can effectively prevent that the steel bow member from sinking the displacement, play effectual supporting effect.
Drawings
Fig. 1 is a schematic structural diagram of the present embodiment.
Fig. 2 is a cross-sectional view of the protruding fastener component of this embodiment.
Fig. 3 is a partial sectional view of the protruding anchor in this embodiment.
Description of reference numerals: 1. a frame body; 2. a support block; 21. a fastening assembly; 211. a slide hole; 212. a threaded rod; 213. a nut; 22. a fixing plate; 23. an anchor rod hole; 3. an anchor rod; 31. welding the plate; 32. grouting holes; 33. and (4) threading.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a steel arch locking foot device for unfavorable geological tunnel construction. Referring to fig. 1 and 2, a steel arch frame lock foot device for unfavorable geological tunnel construction includes support body 1, support body 1 is the arch, support body 1 all is equipped with supporting shoe 2 near the both sides of country rock, the one end that the rock stratum was kept away from to two supporting shoes 2 is equipped with two fastening components 21 jointly, fastening components 21 is including seting up in the slide opening 211 that a supporting shoe 2 kept away from country rock one end relative position, another supporting shoe 2 is close to the position fixedly connected with threaded rod 212 of slide opening 211, threaded rod 212 and slide opening 211 sliding connection, the one end threaded connection that the threaded rod 212 is close to slide opening 211 has nut 213. During the use, put supporting shoe 2 respectively in support body 1 both sides, insert threaded rod 212 in two slide holes 211, through with nut 213 threaded connection to threaded rod 212 both ends to tighten nut 213 realize will support fast and support the fixed of position between body 1.
Referring to fig. 1 and 2, a fixing plate 22 is disposed at one side of the sliding hole 211 close to the frame body 1, the fixing plate 22 is fixedly connected to the supporting block 2, the fixing plate 22 is perpendicular to the supporting block 2, and the fixing plate 22 is disposed in an arc shape equal to the radian of the frame body 1. When placing supporting shoe 2 in both sides, fixed plate 22 can provide great welding area with the laminating of support body 1, then welds supporting shoe 2 and support body 1 together through the welding, realizes the stability of connecting.
Referring to fig. 1 and 3, all set up on the supporting shoe 2 and be the anchor rod hole 23 of certain angle with support body 1, all be equipped with stock 3 in the anchor rod hole 23, stock 3 all welds with supporting shoe 2, and the equal fixedly connected with weld plate 31 in position that the one end that the country rock was kept away from to stock 3 is close to anchor rod hole 23, and back in beating into the country rock with stock 3, weld plate 31 can laminate with supporting shoe 2. Through the welding with stock 3 and the welding of supporting shoe 2 together, can play stable effect, welded plate 31 has increased the face of weld, can prevent the atress fracture, and anchor rod hole 23 can control 3 the angle of squeezing into of stock, prevents that stock 3 from squeezing into and produce the deviation, and it is not good to lead to the firm effect of lock foot.
Referring to fig. 1 and 3, the anchor rod 3 is a hollow structure, a grouting hole 32 is formed in one end of the anchor rod 3, which is far away from the supporting block 2, and a thread 33 is formed on the outer side wall of the anchor rod 3. Slip casting is carried out to stock 3 through the slip casting hole 32 of stock 3, can further fix the steel bow member, especially erects to the steel bow member of unfavorable geology section, and the slip casting can effectively prevent the steel bow member displacement of sinking, plays effectual supporting effect.
The implementation principle of the steel arch locking device for the unfavorable geological tunnel construction is as follows: through welding supporting shoe 2 and support body 1, fixed plate 22 has increased welding area, it is firm to make welding between supporting shoe 2 and the support body 1, squeeze into the country rock with specific angle around spacing with two stock 3 through stock hole 23 after the winding, play the effect of anchor locking, then laminate through welded plate 31 and supporting shoe 2, it is more firm to weld when providing welding area can, through to stock 3 interior slip casting, can realize stock 3's secondary is fixed, effectively prevent that the steel bow member that the geology is bad to cause from subsiding.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a steel arch frame lock foot device for unfavorable geology tunnel construction which characterized in that: including support body (1), support body (1) is the arch, the position both sides that support body (1) is close to the hunch foot are equipped with supporting shoe (2), two the one end that country rock was kept away from in supporting shoe (2) is provided with jointly and is used for fastening components (21) fixed with support body (1) and supporting shoe (2), anchor rod hole (23) have all been seted up in supporting shoe (2), anchor rod (3) have all been inserted in anchor rod hole (23), anchor rod (3) all with supporting shoe (2) welding.
2. The steel arch locking foot device for the unfavorable geological tunnel construction according to the claim 1, characterized in that: the fastening component (21) comprises a sliding hole (211) which is formed in one end, far away from the surrounding rock, of the supporting block (2), a threaded rod (212) is fixedly connected to the position, close to the sliding hole (211), of the other supporting block (2), the threaded rod (212) is in sliding connection with the sliding hole (211), and a nut (213) is connected to one end, close to the sliding hole (211), of the threaded rod (212) in a threaded mode.
3. The steel arch locking foot device for the unfavorable geological tunnel construction according to the claim 2, characterized in that: the two fastening components (21) are arranged, and the two fastening components (21) are positioned at two ends of the support block (2) which are parallel to the frame body (1).
4. The steel arch locking foot device for the unfavorable geological tunnel construction according to the claim 2, characterized in that: one side of the sliding hole (211) close to the frame body (1) is provided with a fixing plate (22), the fixing plate (22) is fixedly connected with the supporting block (2), the fixing plate (22) is perpendicular to the supporting block (2), and the fixing plate (22) is arranged in an arc shape equal to the radian of the frame body (1).
5. The steel arch locking foot device for the unfavorable geological tunnel construction according to the claim 2, characterized in that: a gasket made of elastic material is arranged between the nut (213) and the supporting block (2), and the gasket is in sliding connection with the threaded rod (212).
6. The steel arch locking foot device for the unfavorable geological tunnel construction according to the claim 1, characterized in that: the equal fixedly connected with in position that the one end of country rock was kept away from in stock (3) was close to anchor rod hole (23) welds board (31), works as will back in the country rock is squeezed into in stock (3), weld board (31) can with supporting shoe (2) laminating.
7. The steel arch locking foot device for the unfavorable geological tunnel construction according to the claim 1, characterized in that: the anchor rod hole (23) is in a strip shape, and the anchor rod hole (23) and the frame body (1) are arranged at a certain angle.
8. The steel arch locking foot device for the unfavorable geological tunnel construction according to the claim 1, characterized in that: the anchor rod (3) is arranged in a hollow mode, and a grouting hole (32) is formed in one end, far away from the supporting block (2), of the anchor rod (3).
9. The steel arch locking foot device for the unfavorable geological tunnel construction according to the claim 8, characterized in that: the anchor rod (3) is externally provided with threads (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021847684.6U CN212837859U (en) | 2020-08-28 | 2020-08-28 | Steel arch frame locking device for unfavorable geological tunnel construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021847684.6U CN212837859U (en) | 2020-08-28 | 2020-08-28 | Steel arch frame locking device for unfavorable geological tunnel construction |
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| CN212837859U true CN212837859U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021847684.6U Active CN212837859U (en) | 2020-08-28 | 2020-08-28 | Steel arch frame locking device for unfavorable geological tunnel construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991824A (en) * | 2022-08-08 | 2022-09-02 | 中铁九局集团第七工程有限公司 | Fixing device for controlling angle of advanced small guide pipe in tunnel and construction method |
-
2020
- 2020-08-28 CN CN202021847684.6U patent/CN212837859U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991824A (en) * | 2022-08-08 | 2022-09-02 | 中铁九局集团第七工程有限公司 | Fixing device for controlling angle of advanced small guide pipe in tunnel and construction method |
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