CN212837858U - Connecting device for soft rock deformation tunnel steel arch center node - Google Patents
Connecting device for soft rock deformation tunnel steel arch center node Download PDFInfo
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- CN212837858U CN212837858U CN202021157344.0U CN202021157344U CN212837858U CN 212837858 U CN212837858 U CN 212837858U CN 202021157344 U CN202021157344 U CN 202021157344U CN 212837858 U CN212837858 U CN 212837858U
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Abstract
The utility model discloses a connecting device of soft rock deformation tunnel steel bow member node, including steel bow member, connecting portion and steel casing pipe, the connecting portion welding is in on the steel bow member, connecting portion include the same first connecting plate of structure and second connecting plate, first connecting plate and second connecting plate interval parallel weld in connect through longitudinal connection subassembly on the steel bow member, steel casing pipe box is located just connect through horizontal connection subassembly on the steel bow member. The connecting device has the advantages that through the connecting structure with the inner layer and the outer layer, the phenomenon that the stress of the steel arch frame is large can not occur, under the action of the bending moment, the joint of the steel arch frame can not deform greatly, and the phenomenon that the bolt is broken and the connection fails due to the fact that the bending moment at the joint of the steel arch frame is too large is avoided.
Description
Technical Field
The utility model relates to a tunnel construction technical field, concretely relates to soft rock warp connecting device of tunnel steel bow member node.
Background
At present, in tunnel engineering excavation construction, a supporting structure is a commonly used supporting form in the field of tunnel engineering in China, and is particularly widely applied to weak surrounding rocks, such as a soft rock large-deformation tunnel. The steel arch support in the supporting structure is generally made of H-shaped steel or I-shaped steel, has the advantages of high supporting rigidity, large exertion function, simple and quick processing and manufacturing and the like, but is limited by the limits of processing technology and construction method, the steel arch often adopts a sectional installation mode, the processed connection between all arch frame sections is assembled in the tunnel according to the excavation sequence, according to the control requirement of tunnel supporting quality, the requirements of processing precision and installation precision of each steel arch truss are very high, the traditional welding method adopted among all the arch frame sections can not meet the requirement of the tunnel support quality control, and the welding is carried out in the tunnel, so the construction space is small, the operation is inconvenient, the safety is not high, the welding quality is difficult to control, in a soft rock large-deformation tunnel, the steel arch frame is stressed greatly due to the fact that surrounding rock deformation is large and the steel arch frame is connected through bolts; under the action of bending moment, the joint of the steel arch often generates large deformation, so that the connecting bolt is broken or fails, and the joint of the steel arch often is a weak part of the steel arch support.
In the prior art, connecting plates are often arranged at two ends of a steel frame, a plurality of through holes are arranged on the connecting plates, and the connecting plates are connected by fasteners, such as Chinese patent application document with application number of '201820579163.3'; and the left end and the right end of each arch frame section are symmetrically welded with rectangular connecting plates respectively, bolt holes are symmetrically formed in the positions, corresponding to four corners, of each connecting plate, high-strength bolts penetrate through the corresponding bolt holes between the connecting plates on every two adjacent arch frame sections respectively, and high-strength nuts are screwed down to be fixedly connected, for example, Chinese patent application document with application number of '201220485501. X'. In general, the connection of the steel arch node at present mainly adopts the method of arranging connecting plates at two ends of a steel arch and adopting bolts for connection, but the methods cannot solve the problem of connection failure caused by overlarge bending moment at the connection part of the steel arch.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a connecting device of soft rock deformation tunnel steel bow member node has higher connection rigidity and stability, can effectively avoid steel bow member connecting node too big phenomenon that leads to connecting failure of moment of flexure to solve the technical problem who mentions in the background art.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a connecting device of soft rock deformation tunnel steel bow member node, includes steel bow member, connecting portion and steel casing pipe, connecting portion welding is in on the steel bow member, connecting portion include the same first connecting plate of structure and second connecting plate, first connecting plate and second connecting plate interval parallel weld in connect through longitudinal coupling assembling on the steel bow member, the steel casing pipe box is located just connect through transverse coupling assembling on the steel bow member.
Further, the steel bow member is the I shape bow member, the steel bow member includes first vertical steel sheet, binding steel plate and the vertical steel sheet of second, first vertical steel sheet with the vertical steel sheet parallel arrangement of second, binding steel plate's first end with first vertical steel sheet is connected, binding steel plate's second end with the vertical steel sheet of second is connected.
Further, the lengths of the first vertical steel plate, the connecting steel plate and the second vertical steel plate are equal.
Furthermore, a plurality of first transverse through holes are formed in the first vertical steel plate and the second vertical steel plate.
Furthermore, the first connecting plate and the second connecting plate are both steel base plates, and a pair of longitudinal through holes are formed in the end faces, located on the two outer sides of the steel arch frame, of the first connecting plate and the second connecting plate.
Further, longitudinal coupling assembling includes longitudinal connection reinforcing bar and vertical locking bolt, longitudinal connection reinforcing bar's both ends seted up with vertical locking bolt complex external screw thread, longitudinal connection reinforcing bar wears to locate the cooperation of vertical through-hole vertical locking bolt realizes the connection of first connecting plate and second connecting plate.
Furthermore, the steel sleeve comprises two first flat plates arranged in parallel and two second flat plates arranged in parallel, the first flat plates and the second flat plates are sequentially connected end to form the steel sleeve, and a plurality of pairs of second transverse through holes which are parallel to each other are uniformly formed in the first flat plates.
Further, the transverse connection assembly comprises a transverse connection steel bar and a transverse locking bolt, external threads matched with the transverse locking bolt are arranged at two ends of the transverse connection steel bar, and the transverse connection steel bar sequentially penetrates through the second transverse through hole and the first transverse through hole to be matched with the transverse locking bolt to realize connection of the steel sleeve and the steel arch frame.
The utility model has the advantages that:
the utility model discloses a connecting device of soft rock deformation tunnel steel bow member node, the steadiness that welding connection portion realized steel bow member and connecting portion through longitudinal coupling subassembly on its steel bow member is connected, and the steel casing pipe is established again in the outside of the structure that steel bow member and connecting portion constitute, has further strengthened the stability of steel bow member node to realize through horizontal coupling subassembly that the steadiness between steel casing pipe and the steel bow member is connected. Compared with the prior art only adopt bolt or welded mode, and the utility model discloses a through the connection of the inside and outside two-layer connection structure realization node of the aforesaid, the great phenomenon of steel bow member atress can not appear, under the moment of flexure effect, the steel bow member junction can not produce great deformation yet, has avoided the too big bolt of leading to of steel bow member junction node moment of flexure to break and the emergence of the phenomenon of connection inefficacy.
Drawings
FIG. 1 is a schematic view of the installation structure of the steel arch and the connecting portion of the present invention;
FIG. 2 is a schematic structural view of the steel casing of the present invention;
FIG. 3 is a schematic view of the installation structure of the steel arch, the connecting portion and the steel sleeve of the present invention;
FIG. 4 is a side view of the overall structure of the present invention;
in the figure, 1-steel arch, 101-first vertical steel plate, 102-connecting steel plate, 103-second vertical steel plate, 2-connecting part, 201-first connecting plate, 202-second connecting plate, 3-steel sleeve, 301-first flat plate, 302-second flat plate, 4-first transverse through hole, 5-longitudinal through hole, 6-longitudinal connecting steel bar, 7-second transverse through hole, 8-transverse connecting steel bar and 9-transverse locking bolt.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
Referring to fig. 1-4, the present invention provides a technical solution:
referring to fig. 1-4, a connecting device for a steel arch node of a soft rock deformation tunnel comprises a steel arch, a connecting part and a steel sleeve, wherein the connecting part is welded on the steel arch, the connecting part comprises a first connecting plate and a second connecting plate which are identical in structure, the first connecting plate and the second connecting plate are welded on the steel arch at intervals in parallel and are connected through a longitudinal connecting assembly, and the steel sleeve is sleeved on the steel arch and is connected through a transverse connecting assembly.
The utility model discloses a connecting device of soft rock deformation tunnel steel bow member node, the steadiness that welding connection portion realized steel bow member and connecting portion through longitudinal coupling subassembly on its steel bow member is connected, and the steel casing pipe is established again in the outside of the structure that steel bow member and connecting portion constitute, has further strengthened the stability of steel bow member node to realize through horizontal coupling subassembly that the steadiness between steel casing pipe and the steel bow member is connected. Compared with the prior art only adopt bolt or welded mode, and the utility model discloses a through the connection of the inside and outside two-layer connection structure realization node of the aforesaid, the great phenomenon of steel bow member atress can not appear, under the moment of flexure effect, the steel bow member junction can not produce great deformation yet, has avoided the too big bolt of leading to of steel bow member junction node moment of flexure to break and the emergence of the phenomenon of connection inefficacy.
Referring to fig. 1, the steel arch is an i-shaped steel arch, the steel arch includes a first vertical steel plate, a connection steel plate and a second vertical steel plate, the first vertical steel plate and the second vertical steel plate are arranged in parallel, a first end of the connection steel plate is connected with the first vertical steel plate, and a second end of the connection steel plate is connected with the second vertical steel plate.
The utility model discloses a first vertical steel sheet, steel core and the vertical steel sheet of second adopt interconnect's mode, and the overall structure's of multiplicable steel bow member stability is convenient for install longitudinal connecting portion and longitudinal connecting assembly moreover.
Referring to fig. 1, the first vertical steel plate, the connecting steel plate and the second vertical steel plate have the same length.
The utility model discloses a three component part of I-shaped steel bow member, the length of first vertical steel sheet, connecting steel plate and the vertical steel sheet of second equals promptly, steadiness when can guaranteeing each I-shaped steel bow member and be connected with connecting portion, and the intensity of single pin I-shaped steel bow member itself can be strengthened to the connecting steel plate.
Referring to fig. 1, a plurality of first transverse through holes are formed in the first vertical steel plate and the second vertical steel plate.
The utility model discloses a plurality of first horizontal through-holes on first vertical steel sheet and the vertical steel sheet of second are used for with horizontal coupling assembling's connection.
Referring to fig. 1, the first connecting plate and the second connecting plate are both steel backing plates, and a pair of longitudinal through holes are formed in end faces, located on two outer sides of the steel arch, of the first connecting plate and the second connecting plate.
The utility model discloses first connecting plate and second connecting plate adopt the steel backing plate that hardness is high to make, and the vertical through-hole of seting up on its terminal surface is used for being connected with vertical coupling assembling.
Referring to fig. 1, the longitudinal connection assembly includes a longitudinal connection steel bar and a longitudinal locking bolt, wherein external threads matched with the longitudinal locking bolt are formed at two ends of the longitudinal connection steel bar, and the longitudinal connection steel bar penetrates through the longitudinal through hole and is matched with the longitudinal locking bolt to realize connection between the first connection plate and the second connection plate.
The utility model discloses a vertical coupling assembling adopts the cooperation mode of vertical connecting reinforcement and vertical locking bolt to realize the connection of first connecting plate and second connecting plate, the mounting means is simple swift, can save the time limit for a project improvement work efficiency.
Referring to fig. 2, the steel sleeve comprises two first flat plates arranged in parallel and two second flat plates arranged in parallel, the first flat plates and the second flat plates are sequentially connected end to form the steel sleeve, and a plurality of pairs of second transverse through holes which are parallel to each other are uniformly formed in the first flat plates.
The utility model discloses a steel casing pipe adopt first flat board with the cavity structures that the end to end constitutes in proper order of second flat board can overlap the periphery of locating the steel bow member as steel casing pipe, the horizontal through-hole of second be used for with horizontal coupling assembling's connection.
Referring to fig. 3-4, the transverse connection assembly includes a transverse connection steel bar and a transverse locking bolt, wherein external threads matched with the transverse locking bolt are formed at two ends of the transverse connection steel bar, and the transverse connection steel bar sequentially penetrates through the second transverse through hole and the first transverse through hole to be matched with the transverse locking bolt to realize connection of the steel sleeve and the steel arch frame.
The utility model discloses transverse connection subassembly adopts transverse connection reinforcing bar and transverse locking bolt's cooperation mounting means, realizes being connected of steel sleeve and steel bow member, and this kind of construction mode is simple swift, can save the time limit for a project improvement work efficiency.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (8)
1. The utility model provides a connecting device of soft rock deformation tunnel steel bow member node which characterized in that: including steel bow member (1), connecting portion (2) and steel casing pipe (3), connecting portion (2) welding are in on the steel bow member (1), connecting portion (2) are including first connecting plate (201) and second connecting plate (202) that the structure is the same, first connecting plate (201) and second connecting plate (202) interval parallel weld in connect through vertical coupling assembling on the steel bow member (1), steel casing pipe (3) cover is located just connect through horizontal coupling assembling on the steel bow member (1).
2. The soft rock deformation tunnel steel arch node connection device of claim 1, wherein: steel bow member (1) is the I shape bow member, steel bow member (1) includes first vertical steel sheet (101), binding steel sheet (102) and second vertical steel sheet (103), first vertical steel sheet (101) with second vertical steel sheet (103) parallel arrangement, binding steel sheet (102) first end with first vertical steel sheet (101) are connected, binding steel sheet (102) second end with second vertical steel sheet (103) are connected.
3. The soft rock deformation tunnel steel arch node connection device of claim 2, wherein: the lengths of the first vertical steel plate (101), the connecting steel plate (102) and the second vertical steel plate (103) are equal.
4. The soft rock deformation tunnel steel arch node connection device of claim 2, wherein: a plurality of first transverse through holes (4) are formed in the first vertical steel plate (101) and the second vertical steel plate (103).
5. The soft rock deformation tunnel steel arch node connection device of claim 1, wherein: the steel arch frame is characterized in that the first connecting plate (201) and the second connecting plate (202) are steel base plates, and a pair of longitudinal through holes (5) are formed in the end faces, located on the two outer sides of the steel arch frame (1), of the first connecting plate (201) and the second connecting plate (202).
6. The soft rock deformation tunnel steel arch node connection device of claim 5, wherein: longitudinal connection subassembly includes longitudinal connection reinforcing bar (6) and vertical locking bolt, the both ends of longitudinal connection reinforcing bar (6) seted up with vertical locking bolt complex external screw thread, longitudinal connection reinforcing bar (6) are worn to locate vertical through-hole (5) cooperation vertical locking bolt realizes the connection of first connecting plate (201) and second connecting plate (202).
7. The soft rock deformation tunnel steel arch node connection device of claim 4, wherein: the steel casing pipe (3) comprises two first flat plates (301) arranged in parallel and two second flat plates (302) arranged in parallel, the first flat plates (301) and the second flat plates (302) are sequentially connected end to form the steel casing pipe (3), and a plurality of pairs of second transverse through holes (7) which are parallel to each other are uniformly formed in the first flat plates (301).
8. The connecting device of the soft rock deformation tunnel steel arch node of claim 7, characterized in that: transverse connection subassembly includes transverse connection reinforcing bar (8) and transverse locking bolt (9), the both ends of transverse connection reinforcing bar (8) seted up with transverse locking bolt (9) complex external screw thread, transverse connection reinforcing bar (8) are worn to locate in proper order second transverse through-hole (7) and first transverse through-hole (4) cooperation transverse locking bolt (9) are realized steel casing pipe (3) and steel bow member (1) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021157344.0U CN212837858U (en) | 2020-06-19 | 2020-06-19 | Connecting device for soft rock deformation tunnel steel arch center node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021157344.0U CN212837858U (en) | 2020-06-19 | 2020-06-19 | Connecting device for soft rock deformation tunnel steel arch center node |
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| CN212837858U true CN212837858U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021157344.0U Active CN212837858U (en) | 2020-06-19 | 2020-06-19 | Connecting device for soft rock deformation tunnel steel arch center node |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320377A (en) * | 2021-12-06 | 2022-04-12 | 中铁十七局集团第三工程有限公司 | Steel frame anchoring type soft rock temporary support system |
| CN114562294A (en) * | 2022-03-29 | 2022-05-31 | 成都理工大学 | Tunnel lets pressure to strut restriction energy-absorbing controller that hinders |
-
2020
- 2020-06-19 CN CN202021157344.0U patent/CN212837858U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320377A (en) * | 2021-12-06 | 2022-04-12 | 中铁十七局集团第三工程有限公司 | Steel frame anchoring type soft rock temporary support system |
| CN114562294A (en) * | 2022-03-29 | 2022-05-31 | 成都理工大学 | Tunnel lets pressure to strut restriction energy-absorbing controller that hinders |
| CN114562294B (en) * | 2022-03-29 | 2023-03-10 | 成都理工大学 | Tunnel lets pressure to strut restriction energy-absorbing controller that hinders |
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