CN218439398U - Joint bending-resistant tunnel steel arch frame - Google Patents
Joint bending-resistant tunnel steel arch frame Download PDFInfo
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- CN218439398U CN218439398U CN202222749560.XU CN202222749560U CN218439398U CN 218439398 U CN218439398 U CN 218439398U CN 202222749560 U CN202222749560 U CN 202222749560U CN 218439398 U CN218439398 U CN 218439398U
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- splicing
- mounting plate
- splicing unit
- main body
- vault
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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Abstract
The utility model discloses a joint bending-resistant tunnel steel arch center, which comprises a vault splicing unit, a side part upper section splicing unit, a side part middle section splicing unit and a side part lower side splicing unit; the vault splicing unit comprises a vault main body and a vault mounting plate; the vault main body is a hollow arc-shaped cylinder; the lateral part upper segment splicing unit comprises a hollow splicing main body, a splicing part, an upper mounting plate and a lower mounting plate fixed at the lower end of the splicing main body, one end of the splicing part is embedded and sleeved in the splicing main body, and the vault splicing unit, the lateral part upper segment splicing unit, the lateral part middle segment splicing unit and the lateral part lower side splicing unit are sequentially spliced and fixed. The utility model discloses a tunnel box steel bow member is through the further enhancement of connecting portion on the junction, has not only improved the bending resistance and the shear strength of junction, has still improved the intensity of junction for the intensity of the local concatenation section of tunnel box steel bow member obtains improving, has also further improved the wholeness and the support nature of tunnel box steel bow member.
Description
Technical Field
The utility model relates to a tunnel construction technical field especially relates to a connect tunnel steel bow member of bending resistance.
Background
The steel arch is widely applied to tunnel construction as a common primary support measure. In order to facilitate transportation and installation, a ring arch is divided into a plurality of units, and the units are spliced into rings through bolts to support on a construction site. Tunnel supporting construction often receives the bending simultaneously, receives the shear, though the bolt can provide certain shear strength, its bending strength is not high, therefore such concatenation mode has caused the junction to be more weak than other places, and the job site also often is steel bow member joint department and yields first, leads to the bow member to appear buckling deformation, and the bow member junction breaks when serious, causes primary support to destroy or even collapse.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough of prior art, provide a tunnel box-shaped steel bow member that the bending resistance of joint department is better, intensity is better and be convenient for the installation.
In order to achieve the purpose of the utility model, the utility model adopts the technical proposal that: the device comprises a vault splicing unit and side splicing units fixed at two ends of the vault splicing unit; the vault splicing unit comprises a vault main body and vault mounting plates fixed at two ends of the vault main body; the vault main body is a hollow arc-shaped cylinder; the side splicing unit comprises a side upper section splicing unit, a side middle section splicing unit and a side lower side splicing unit which are sequentially connected; the structure of the side upper section splicing unit, the structure of the side middle section splicing unit and the structure of the side lower side splicing unit are the same; the side part upper section splicing unit comprises a hollow splicing main body, a splicing part arranged at the upper end of the splicing main body, an upper mounting plate fixed on the outer side of the splicing part and a lower mounting plate fixed at the lower end of the splicing main body, one end of the splicing part is embedded and fixed in the splicing main body, and the vault splicing unit, the side part upper section splicing unit, the side part middle section splicing unit and the side part lower side splicing unit are sequentially spliced and fixed; the upper mounting plate, the lower mounting plate and the vault mounting plate are identical in structure and size; the vault mounting plate comprises a rectangular plate main body, a rectangular opening arranged on the rectangular plate main body and a plurality of mounting plate bolt holes arranged on the rectangular plate main body; the rectangle opening sets up in the middle part of rectangular plate main part, and the shape of rectangle opening is the same with the shape of grafting portion, and rectangle opening and the outside clearance or interference fit of grafting portion are connected through a plurality of bolts and nut between vault mounting panel and the last mounting panel, last mounting panel and the lower connecting plate.
Further, the vault splicing units and the side upper section splicing units are connected through vault mounting plates and upper mounting plates; the side part upper section splicing unit and the side part middle section splicing unit are connected through an upper mounting plate and a lower connecting plate, and the side part middle section splicing unit and the side part lower side splicing unit are connected through a lower mounting plate and a lower connecting plate.
Further, clearance or interference fit is formed between the insertion part and the splicing main body and between the insertion part and the vault main body.
Furthermore, the length of the insertion part is one fourth of the length of the side part upper section splicing unit, and the insertion length of the insertion part and the side part upper section splicing unit is half of the length of the insertion part.
Furthermore, a plurality of screws are arranged outside the splicing main body and are positioned at the fixing sections of the splicing parts, and blind holes matched with the screws are further formed in the splicing parts.
Furthermore, at least three mounting plate bolt holes are respectively formed in the two sides of the rectangular plate main body in the length direction, and the mounting plate bolt holes are distributed in a linear array mode.
Further, the sections of the vault splicing unit, the splicing main body and the splicing part are rectangular.
Further, the vault mounting plate is welded and fixed with the vault main body, and the upper mounting plate, the lower mounting plate and the splicing main body are welded and fixed.
The utility model has the advantages that:
1. the utility model discloses a tunnel box-type steel bow member is connected each concatenation unit through grafting portion and the mode that the mounting panel combines and is encircleed, further strengthen the connection through the mounting panel again between each section concatenation unit, connect each concatenation unit through this kind of combination connected mode, make tunnel box-type steel bow member when bearing country rock pressure, the shear force and the moment of flexure of every section concatenation unit junction of tunnel box-type steel bow member will be born by bolt and grafting portion jointly, the intensity of further promotion junction, the wholeness and the support nature of tunnel box-type steel bow member are improved.
2. The utility model discloses a tunnel box steel bow member is through the further enhancement of connecting portion on the junction, has not only improved the bending resistance and the shear strength of junction, has still improved the intensity of junction for the intensity of the local concatenation section of tunnel box steel bow member obtains improving, has also further improved the wholeness and the support nature of tunnel box steel bow member.
3. The utility model discloses a vault concatenation unit and the lateral part concatenation unit connection of a plurality of sections, between vault concatenation unit and the lateral part concatenation unit connection, between each section lateral part concatenation unit, all peg graft through grafting portion and main part, utilize the mounting panel on lateral part concatenation unit connection and each section lateral part concatenation unit to connect simultaneously, high durability and convenient installation, and is convenient to install, connect fixed reliable, very big easy to assemble, fall into the design of a plurality of vault concatenation units and lateral part concatenation unit with tunnel box steel bow member, make the production of tunnel box steel bow member more modularization, the manufacturing degree of difficulty has been reduced, not only convenient transportation, and convenient anytime and anywhere's equipment.
Drawings
Fig. 1 is a schematic view of the overall appearance structure of the present invention;
FIG. 2 is a schematic view of the overall appearance structure of the present invention;
FIG. 3 is a schematic structural view of each segment of the splicing units of the present invention;
fig. 4 is a schematic structural diagram of the vault splicing unit of the present invention;
FIG. 5 is a schematic structural view of the middle-side splicing unit of the present invention;
fig. 6 is a schematic diagram of the construction of the dome mounting endplate.
The main part symbols in the figures are explained as follows:
1. a vault splicing unit; 11. a dome body; 12. installing an end plate on the vault; 121. a rectangular plate main body; 122. a rectangular opening; 123. mounting plate bolt holes;
2. a side splicing unit; 21. a side upper section splicing unit; 22. splicing sheets at the middle sections of the side parts; 23. a splicing unit at the lower section of the side part; 211. splicing the main bodies; 212. a plug-in part; 213. an upper mounting plate; 214. and a lower mounting plate.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art within the spirit and scope of the present invention as defined and defined by the appended claims.
The joint bending-resistant tunnel steel arch comprises a vault splicing unit 1 and side splicing units fixed at two ends of the vault splicing unit 1; the vault splicing unit 1 comprises a vault main body 11 and vault mounting plates 12 fixed at two ends of the vault main body 11; the vault main body 11 is a hollow arc-shaped cylinder; the side splicing unit 2 comprises a side upper section splicing unit 21, a side middle section splicing unit 22 and a side lower side splicing unit 23 which are connected in sequence; the structure of the side upper section splicing unit 21, the structure of the side middle section splicing unit 22 and the structure of the side lower side splicing unit 23 are the same; the side upper section splicing unit comprises a hollow splicing main body 211, a splicing part 212 arranged at the upper end of the splicing main body 211, an upper mounting plate 213 fixed on the outer side of the splicing part 212 and a lower mounting plate 214 fixed at the lower end of the splicing main body 211, one end of the splicing part 212 is embedded and sleeved in the splicing main body 211, and the vault splicing unit 1, the side upper section splicing unit 21, the side middle section splicing unit 22 and the side lower side splicing unit 23 are sequentially spliced and fixed. The inserting part 212 and the splice main body 21 and the inserting part 212 and the dome main body 11 are in clearance fit or interference fit.
In the present embodiment, the upper mounting plate 213, the lower mounting plate 214, and the dome mounting plate 12 are the same in structure and size; the dome mounting plate 12 comprises a rectangular plate body 121, a rectangular opening 122 arranged on the rectangular plate body 121 and a plurality of mounting plate bolt holes 123 arranged on the rectangular plate body 121; the rectangular opening 122 is arranged in the middle of the rectangular plate main body 121, the shape of the rectangular opening 122 is the same as that of the inserting part 212, the rectangular opening is in clearance or interference fit with the outside of the inserting part 212, the length of the rectangular plate main body 121 is slightly larger than that of the box-shaped steel section, and the width positions of the mounting plate bolt holes 123 are reserved on two sides of the width of the rectangular plate main body 121; the dome mounting plate 12 is connected with the upper mounting plate 213 and the upper mounting plate 213 is connected with the lower connecting plate 214 through a plurality of bolts and nuts, and the bolts are preferably M24 bolts. The upper mounting plate 213 is fixed outside the main body 211, and when the inserting part 212 is mounted on the upper mounting plate 213, one side of the upper mounting plate 213 is welded and fixed to the upper mounting plate 213, so that the connection strength between the upper mounting plate 213 and the main body 211 is increased.
In the present embodiment, the dome splicing unit 1 and the side upper segment splicing unit 21 are connected by the dome mounting plate 12 and the upper mounting plate 213; the side upper section splicing unit 21 and the side middle section splicing unit 22 are connected through an upper mounting plate 213 and a lower connecting plate 214, and the side middle section splicing unit 22 and the side lower side splicing unit 23 are connected through a lower connecting plate 214. The vault splicing unit 1, the lateral part upper segment splicing unit 21, the lateral part middle segment splicing unit 22 and the lateral part lower side splicing unit 23 are fixedly connected through the mounting bolts and the bolt sleeves, and the stability of the joint of the steel arch frames is improved, so that the connection between the splicing units is more convenient.
In the present embodiment, the length of the insertion part 212 is preferably one fourth of the length of the side upper segment splicing unit 21, and the insertion length of the insertion part 212 and the side upper segment splicing unit 21 is preferably one half of the length of the insertion part 212. The lengths of the lateral upper section splicing unit 21, the lateral middle section splicing unit 22 and the lateral lower side splicing unit 23 are the same, the length of the splicing part 212 is preferably one fourth of that of the lateral upper section splicing unit 21, when the splicing units are stably connected, the material of the splicing part 212 is saved, the splicing part 212 adopts a hollow rectangular metal beam or I-steel or C-shaped steel, and the radian of the splicing part 212 is adapted to the radians of the lateral upper section splicing unit 21, the lateral middle section splicing unit 22 and the lateral lower side splicing unit 23. The side upper section splicing unit 21, the side middle section splicing unit 22 and the side lower side splicing unit 23 are connected to form a complete arc.
In this embodiment, a plurality of screws are disposed outside the main body 21, the plurality of screws are located at the fixing section of the insertion portion 212, and blind holes matched with the screws are further disposed on the insertion portion 212. The screws have the functions that when the inserting part 212 is fixed on the splicing main body 21, the splicing main body 21 and the inserting part 212 are fixed in advance through the screws, and the inserting part 212 can be fixed in a surrounding manner by matching with a plurality of screws, so that the connection stability between the inserting part 212 and the splicing main body 21 is improved; when the upper mounting plate 213 on the mating part 212 is attached to the mating body 21, the upper mounting plate 213 and the mating body 21 may be welded to each other, thereby further fixing the upper mounting plate 213 and the mating body 21.
In this embodiment, at least three mounting plate bolt holes 123 are respectively disposed on two sides of the rectangular plate body 121 in the length direction, and the mounting plate bolt holes 123 are distributed in a linear array.
In the present embodiment, the dome mosaic unit 1, the mosaic main body 21 and the inserting part 212 have a rectangular cross section.
In this embodiment, the dome mounting plate 12 is welded to the dome main body 11, and the upper mounting plate 213 and the lower mounting plate 214 are welded to the splice main body 211. When each side splicing unit is connected, after each splicing part 212 is spliced and fixed with the splicing main body 21, the upper mounting plate 213 and the lower mounting plate 214 are ensured to be parallel or attached as much as possible, and the upper mounting plate 213 and the lower mounting plate 214 are conveniently connected and fixed by using bolt sleeves, so that the splicing units on the two sides of the side splicing unit and the vault splicing unit have the same inclination angle, and the specific inclination angle is determined according to actual construction. The cross-sectional areas of the side upper section splicing unit 21, the side middle section splicing unit 22 and the side lower section splicing unit 23 are preferably 220mm in length, 110mm in width and 12mm in wall thickness.
The working principle and the process thereof are as follows: during installation, the upper mounting plate 213 outside the inserting part 212 is welded in the middle, the lower mounting plate 214 is welded and fixed at the bottom of the splicing main body 21, and the arch mounting plates 12 are welded and fixed at two sides of the arch main body 11; then, the upper mounting plate 213 and the splicing main body 21 are subjected to reinforced welding; then, the fixing and side lower-side splicing unit 23, the side middle-section splicing unit 22 and the side upper-section splicing unit 21 are sequentially inserted and connected through the upper mounting plate 213, the lower mounting plate 214 and the bolt sleeve; and finally, inserting and fixing the two groups of assembled side splicing units at two ends of the vault splicing unit 1, and connecting the vault mounting plate 12, the upper mounting plate 213 and the bolt sleeve.
Claims (8)
1. The joint bending-resistant tunnel steel arch center is characterized by comprising a vault splicing unit (1) and side splicing units fixed at two ends of the vault splicing unit (1);
the vault splicing unit (1) comprises a vault main body (11) and vault mounting plates (12) fixed at two ends of the vault main body (11); the vault main body (11) is a hollow arc-shaped cylinder;
the side splicing unit (2) comprises a side upper section splicing unit (21), a side middle section splicing unit (22) and a side lower side splicing unit (23) which are sequentially connected; the side upper section splicing unit (21), the side middle section splicing unit (22) and the side lower side splicing unit (23) have the same structure;
the side upper section splicing unit comprises a hollow splicing main body (211), a splicing part (212) arranged at the upper end of the splicing main body (211), an upper mounting plate (213) fixed at the outer side of the splicing part (212) and a lower mounting plate (214) fixed at the lower end of the splicing main body (211), one end of the splicing part (212) is embedded and sleeved in the splicing main body (211), and the vault splicing unit (1), the side upper section splicing unit (21), the side middle section splicing unit (22) and the side lower side splicing unit (23) are sequentially spliced and fixed; the upper mounting plate (213), the lower mounting plate (214) and the vault mounting plate (12) are identical in structure and size; the vault mounting plate (12) comprises a rectangular plate main body (121), a rectangular opening (122) arranged on the rectangular plate main body (121) and a plurality of mounting plate bolt holes (123) arranged on the rectangular plate main body (121); the rectangular opening (122) is arranged in the middle of the rectangular plate main body (121), the rectangular opening (122) is the same as the insertion part (212) in shape, the rectangular opening is in clearance fit with the outside of the insertion part (212) or in interference fit with the outside of the insertion part, and the dome mounting plate (12) is connected with the upper mounting plate (213), the upper mounting plate (213) and the lower mounting plate (214) through a plurality of bolts and nuts.
2. The bend-resistant tunnel steel arch of claim 1, wherein the crown splice unit (1) and the side upper segment splice unit (21) are connected by a crown mounting plate (12) and an upper mounting plate (213); the side upper section splicing unit (21) and the side middle section splicing unit (22) are connected through an upper mounting plate (213) and a lower mounting plate (214) between the side middle section splicing unit (22) and the side lower side splicing unit (23).
3. The joint moment-resistant tunnel steel arch according to claim 1, wherein a clearance or interference fit is provided between the spigot portion (212) and the splice body (211), and between the spigot portion (212) and the dome body (11).
4. The steel arch for a tunnel with a joint bending resistance according to claim 1, wherein the length of the insertion portion (212) is one quarter of the length of the side upper segment splicing unit (21), and the insertion length of the insertion portion (212) and the side upper segment splicing unit (21) is one half of the length of the insertion portion (212).
5. The tunnel steel arch of claim 1, wherein the splicing main body (211) is provided with a plurality of screws at the outer portion thereof, and a plurality of the screws are located at the fixing section of the insertion part (212), and the insertion part (212) is further provided with blind holes for fitting the screws.
6. The joint moment-resistant tunnel steel arch according to claim 1, wherein said rectangular plate body (121) is provided with at least three mounting plate bolt holes (123) on both sides in the length direction, respectively, said mounting plate bolt holes (123) being arranged in a linear array.
7. Joint moment-resistant tunnel steel arch according to claim 1, characterised in that the cross-section of the vault-splicing unit (1), the splicing body (211) and the splicing section (212) is rectangular.
8. The bend-resistant tunnel steel arch according to claim 1, wherein the arch mounting plate (12) is welded to the arch body (11), and the upper mounting plate (213), the lower mounting plate (214) are welded to the splice body (211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222749560.XU CN218439398U (en) | 2022-10-18 | 2022-10-18 | Joint bending-resistant tunnel steel arch frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222749560.XU CN218439398U (en) | 2022-10-18 | 2022-10-18 | Joint bending-resistant tunnel steel arch frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218439398U true CN218439398U (en) | 2023-02-03 |
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ID=85068546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222749560.XU Active CN218439398U (en) | 2022-10-18 | 2022-10-18 | Joint bending-resistant tunnel steel arch frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218439398U (en) |
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2022
- 2022-10-18 CN CN202222749560.XU patent/CN218439398U/en active Active
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