CN212927879U - Spiral tunnel supporting device - Google Patents

Spiral tunnel supporting device Download PDF

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Publication number
CN212927879U
CN212927879U CN202021326966.1U CN202021326966U CN212927879U CN 212927879 U CN212927879 U CN 212927879U CN 202021326966 U CN202021326966 U CN 202021326966U CN 212927879 U CN212927879 U CN 212927879U
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China
Prior art keywords
spiral
steel arch
spiral steel
connecting hole
piece
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CN202021326966.1U
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Chinese (zh)
Inventor
岳喜军
刘洋
白榕
李瑜
高焕
杨丽丽
岳金梅
赵利霞
李江涛
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岳喜军
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Priority to CN202021326966.1U priority Critical patent/CN212927879U/en
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Abstract

The utility model discloses a spiral tunnel supporting device, including the spiral steel bow member, the connecting rod, reinforcing bar net piece, the fixed plate, the connection of two liang of spiral steel bow members is through the grafting recess that self both ends were equipped with the grafting boss that corresponds after steadily closed mutually, rethread connecting rod and fixed plate are fixed, arc reinforcing bar net piece is being welded between the spiral steel bow member, spiral steel bow member both ends side still is equipped with the connecting hole, the connecting rod both ends transversely are equipped with the U type interface of symmetry, the both sides face of U type interface is equipped with communicating connecting hole, the intermediate position is equipped with the engaging lug about the fixed plate, be equipped with the connecting hole in the four corners, the connecting hole that spiral steel bow member both ends were equipped with, the connecting hole that the connecting rod both ends were equipped with, the connecting hole that is equipped with on the engaging lug, all be. The utility model has the advantages that: the structure is reasonable, the installation and operation are simple, the supporting strength is high, the construction is safe and reliable, and the popularization and the use are facilitated.

Description

Spiral tunnel supporting device
Technical Field
The utility model belongs to tunnel construction supporting device, concretely relates to spiral tunnel supporting device.
Background
At present, composite lining tunnel technology is commonly used in highway, railway and water conservancy tunnel construction. The primary support of the composite lining tunnel, the main structure includes the anchor bolt sprays the concrete, steel bar deeping and separates the steel bow member with certain interval, the steel bow member interval is generally 0.6-1.2 meters, adopt this way steel bow member have steel bar deeping and spray concrete, but the rigidity and intensity of part between the bow members are compared with the bow member and different greatly, especially in the tunnel enters and exits section, bad geology and integrity of the support of the special ground land, become the weak link of the whole primary support system; in addition, the steel arch is generally connected by welding steel plates at two ends of an arch section and then connecting the steel plates by bolts in the construction process, when the steel plates are welded on the arch section, the material of a heat affected zone formed by steel materials near a welding seam due to the high-temperature welding action becomes brittle, the bearing capacity, rigidity and usability of the structure become poor, and the welded structure is large in rigidity, so that local cracks are easily expanded to the whole body once being generated.
In view of this, how to design a more scientific and reasonable's tunnel supporting device, it is to make the work progress safer, stable the utility model discloses the main problem that solves.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above problem, provide a tunnel supporting device that rational in infrastructure, the bulk joint performance is good, construction safe and reliable.
The technical scheme for realizing the aim is as follows: the utility model provides a spiral tunnel supporting device, includes steel bow member, transverse connection pole, fixed plate, fixing bolt and reinforcing bar net piece, the steel bow member is the spiral arc form, the steel bow member by the repeated spiral cooperation of multisection arc spiral steel bow member and through fixed plate and fixing bolt connection phase composition, the arc spiral steel bow member of repeated spiral connection is connected fixed plate and fixing bolt through transverse connection pole and is consolidated the connection.
Furthermore, a connecting lug is arranged in the middle of the upper end face of the fixing plate, a connecting hole is formed in the side part of the connecting lug, U-shaped interfaces are respectively arranged at two ends of the transverse connecting rod, a connecting hole is formed in the side part of each U-shaped interface, and the connecting lug is connected with the U-shaped interfaces in a nested manner; and the central line positions corresponding to the four corners of the fixing plate are provided with connecting holes for fixing the spiral steel arch piece.
Furthermore, the two ends of the spiral steel arch piece are respectively provided with an inserting groove and an inserting boss, and the lower plane of the spiral steel arch piece is respectively provided with a corresponding connecting hole for connection and fixation.
Furthermore, the spiral steel arch piece is provided with connecting holes at two ends, connecting holes at two ends of the transverse connecting rod, connecting holes on the connecting lugs, and connecting holes on the fixing plate, which are mutually aligned and then are connected through the fixing bolt to form the whole spiral supporting device.
Furthermore, the outer ring of the steel arch frame is wrapped with an arc-shaped steel bar net piece, the support strength of the spiral steel arch frame can be enhanced through the arrangement of the steel bar net piece, and the adsorption force on the tunnel surface can be enhanced through the steel bar net piece when the concrete is sprayed.
Furthermore, the pitch interval of the steel arch is 0.8-1 m.
The utility model has the advantages that: the structure is reasonable, the installation and operation are simple, the supporting strength is high, the construction is safe and reliable, and the popularization and the use are facilitated.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of the transverse connection portion of the present invention;
FIG. 3 is an enlarged schematic view of the vertical connection portion of the present invention;
FIG. 4 is an enlarged schematic view of the spiral steel arch and two ends of the spiral steel arch of the present invention;
fig. 5 is the utility model discloses a steel arch covers the local structure sketch map of reinforcing bar net piece.
In the figure: 1. the steel arch 101, the inserting groove 102, the inserting boss 103, the arc spiral steel arch piece 104, the connecting hole 2, the transverse connecting rod 201, the U-shaped interface 3, the fixing plate 301, the connecting lug 4, the fixing bolt 5 and the steel mesh sheet.
Detailed Description
In order to facilitate understanding of those skilled in the art, the embodiments of the present invention will be further described with reference to the accompanying drawings.
The spiral tunnel supporting device comprises a steel arch 1, a transverse connecting rod 2, a fixing plate 3, a fixing bolt 4 and a reinforcing mesh 5, wherein the steel arch 1 is in a spiral arc shape, the steel arch 1 is formed by repeatedly spirally matching a plurality of sections of arc spiral steel arch pieces 103 and is connected and combined through the fixing plate 3 and the fixing bolt 4, and the pitch interval of the steel arch 1 is 0.8-1 m;
the arc spiral steel arch member 103 which is repeatedly spirally connected is connected with the fixing plate 3 and the fixing bolt 4 through the transverse connecting rod 2 for reinforcement connection; a connecting lug 301 is arranged in the middle of the upper end face of the fixing plate 3, a connecting hole is formed in the side portion of the connecting lug 301, U-shaped interfaces 201 are respectively arranged at two ends of the transverse connecting rod 2, a connecting hole is formed in the side portion of each U-shaped interface 201, and the connecting lug 301 is connected with the U-shaped interfaces 201 in an embedded mode; connecting holes are formed in the central line positions corresponding to the four corners of the fixing plate 3 and used for fixing the spiral steel arch piece 103; two ends of the spiral steel arch piece 103 are respectively provided with an inserting groove 101 and an inserting boss 102, and the lower plane of the spiral steel arch piece is respectively provided with a corresponding connecting hole for connection and fixation.
In a preferred embodiment, the connecting holes arranged at the two ends of the spiral steel arch member 103, the connecting holes arranged at the two ends of the transverse connecting rod 2, the connecting holes arranged on the connecting lugs 301 and the connecting holes arranged on the fixing plate 3 are aligned with each other and then are connected with each other through the fixing bolts 4 to form a whole spiral supporting device.
In a preferred embodiment, in another embodiment, the arc-shaped steel mesh 5 is wrapped on the outer ring of the steel arch 1, and the arrangement of the steel mesh 5 can not only enhance the supporting strength of the spiral steel arch, but also enhance the adsorption force on the tunnel surface through the steel mesh when the concrete is sprayed.
When the device is used, firstly, the splicing groove 101 and the splicing boss 102 which are arranged at the connecting ends of the two spiral steel arches 1 are aligned and spliced, then the connecting rod 2 is aligned to the connector of the two spiral steel arches, then the connecting lug 301 which is arranged on the fixing plate 3 is aligned to the U-shaped connector 201 which is arranged on the connecting rod 2, the bolts 4 are respectively arranged in the connecting holes which are arranged on the two side surfaces, finally, the connecting holes which are arranged on the four inner corners of the fixing plate 3 are aligned to the connecting holes which are arranged on the side surfaces of the connecting rod 2 and the connecting holes which are arranged on the side surfaces of the spiral steel arches, and then the connecting holes are fastened by the bolts to form the connection of the two spiral steel arches, and the spiral steel arches are repeatedly connected according to the.
Further, in another embodiment, the arc-shaped reinforcing mesh 5 is wrapped outside the spiral steel arch frame, the supporting strength of the spiral steel arch frame can be enhanced through the arrangement of the reinforcing mesh 5, and the adsorption force on the tunnel surface can be enhanced through the reinforcing mesh when concrete is sprayed, so that the overall stability is enhanced.
The above is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby; all the simple equivalent changes and modifications made according to the claims and the contents of the creation specification of the present invention should still fall within the scope covered by the present invention.

Claims (6)

1. The utility model provides a spiral tunnel supporting device, includes steel bow member (1), transverse connection pole (2), fixed plate (3), fixing bolt (4) and reinforcing bar net piece (5), its characterized in that: the steel arch (1) is in a spiral arc shape, the steel arch (1) is formed by repeatedly spirally matching a plurality of sections of arc spiral steel arch pieces (103) and connecting and combining the arc spiral steel arch pieces through a fixing plate (3) and a fixing bolt (4), and the arc spiral steel arch pieces (103) which are repeatedly spirally connected are connected with the fixing plate (3) and the fixing bolt (4) through a transverse connecting rod (2) to be reinforced and connected.
2. A spiral tunnel support apparatus according to claim 1, wherein: a connecting lug (301) is arranged in the middle of the upper end face of the fixing plate (3), a connecting hole is formed in the side portion of the connecting lug (301), U-shaped interfaces (201) are respectively arranged at two ends of the transverse connecting rod (2), a connecting hole is formed in the side portion of each U-shaped interface (201), and the connecting lug (301) is connected with the U-shaped interfaces (201) in a nested mode; the corresponding central line position of four corners on the fixed plate (3) is provided with a connecting hole for fixing the spiral steel arch piece (103).
3. A spiral tunnel support apparatus according to claim 2, wherein: two ends of the spiral steel arch piece (103) are respectively provided with an inserting groove (101) and an inserting boss (102), and the lower plane of the spiral steel arch piece is respectively provided with a corresponding connecting hole for connection and fixation.
4. A screw-type tunnel supporting apparatus according to claim 1, 2 or 3, wherein: the spiral steel arch piece is characterized in that the spiral steel arch piece is a spiral supporting device which is integrally connected through a fixing bolt (4) after connecting holes arranged at two ends of the spiral steel arch piece (103), connecting holes arranged at two ends of the transverse connecting rod (2), connecting holes arranged on the connecting lugs (301) and connecting holes arranged on the fixing plate (3) are aligned with each other.
5. A spiral tunnel support apparatus according to claim 1, wherein: the outer lane parcel of steel bow member (1) be provided with arc reinforcing bar net piece (5), can not only strengthen spiral steel bow member's support intensity through the setting of this reinforcing bar net piece (5), see through reinforcing bar net piece when concrete sprays moreover and can strengthen the adsorption affinity on the tunnel face.
6. A spiral tunnel support apparatus according to claim 1, wherein: the pitch interval of the steel arch (1) is 0.8-1 m.
CN202021326966.1U 2020-07-08 2020-07-08 Spiral tunnel supporting device Active CN212927879U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021326966.1U CN212927879U (en) 2020-07-08 2020-07-08 Spiral tunnel supporting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021326966.1U CN212927879U (en) 2020-07-08 2020-07-08 Spiral tunnel supporting device

Publications (1)

Publication Number Publication Date
CN212927879U true CN212927879U (en) 2021-04-09

Family

ID=75328837

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021326966.1U Active CN212927879U (en) 2020-07-08 2020-07-08 Spiral tunnel supporting device

Country Status (1)

Country Link
CN (1) CN212927879U (en)

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