CN217028937U - Hoop connecting device for support assembly - Google Patents
Hoop connecting device for support assembly Download PDFInfo
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- CN217028937U CN217028937U CN202123094535.4U CN202123094535U CN217028937U CN 217028937 U CN217028937 U CN 217028937U CN 202123094535 U CN202123094535 U CN 202123094535U CN 217028937 U CN217028937 U CN 217028937U
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Abstract
The utility model relates to the field of tunnel supporting structures, in particular to a circumferential connecting device for a supporting assembly, which comprises a connecting sleeve, wherein the connecting sleeve is connected with the end part of an adjacent steel pipe through a bolt; the utility model discloses a circumferential connecting device for a support assembly, which uses the circumferential connecting device to connect adjacent steel pipes and overcomes the defects of long installation time consumption, low installation precision, poor joint performance and the like of the traditional adjacent butted steel pipes in the traditional connecting modes of welding, sleeves, flanges and the like; the connecting sleeve and the high-strength bolt are prefabricated in a factory, and the connection can be completed only by screwing the bolt on the spot, so that the assembly and the connection are convenient.
Description
Technical Field
The utility model relates to a tunnel supporting construction field is a hoop connecting device that strut assembly used particularly.
Background
Steel frame support is widely used in various special surrounding rock tunnels and submarine tunnels as a common primary support structure for tunnel engineering construction.
At the present stage, the concrete-sprayed tunnel steel frame support is mainly divided into a profile steel frame and a grid steel frame, wherein the grid steel frame is formed by processing steel bars, and the bearing capacity is low; the section steel frame is formed by processing I-steel or H-shaped steel and the like, and has higher bearing capacity.
However, with the development of underground geotechnical engineering such as tunnel engineering towards ultra-large deep burial trend, especially when the construction is performed under extreme geological conditions such as high ground stress, the existing steel frame can generate serious deformation and damage, such as lateral instability, buckling, distortion, joint crushing and the like of the steel frame.
The steel pipe concrete composite structure can fully utilize the bending resistance and the tensile property of steel and the compressive property of a concrete material, has good stress performance in all directions of a cross section, and is a supporting structure for replacing a steel frame.
One of the research hotspots and difficulties of the concrete-filled steel tube for tunnel support at present is the extension connection mode of two sections of steel tubes.
The concrete-filled steel tube for tunnel support usually adopts methods such as welding, flange connection, sleeve connection and the like, but the fields such as fabricated building and the like also have modes such as threaded connection, splicing and the like, and all have different defects.
Welding: (1) stress concentration, defects and the like exist at the welding seam easily caused by welding, so that the performance of the joint is deteriorated; (2) the welding quality is influenced by environmental conditions such as temperature, humidity and dust in the tunnel, the technical level and physical ability of workers, and the like, so that the joint precision is poor; (3) the tunnel interior welding work load is big, consume man-hour for a long time, still possesses the construction security problem when having high altitude construction.
Flange connection: (1) the flange is usually connected with the end of the steel pipe by welding, and welding defects such as undercut and the like often exist at a welding seam and welding residual stress is generated, so that the welding seam is a weak link of the flange and seriously influences the fatigue life of a joint; (2) the outer diameter of the flange is obviously larger than that of the steel pipe, so that the steel pipe cannot be closely attached to surrounding rocks after installation, the timely bearing capacity of a steel frame is influenced, and waste is caused to the tunnel excavation outline; (3) the concrete-filled steel tube for tunnel support is in a bending state for a long time, the stress of the steel tube is transferred through the flange, and the stress state of the flange is complex and is in a high stress state for a long time. When adjacent steel pipes have relative twisting, bending and dislocation trends, the pre-tightening force of the flange bolts cannot meet the deformation control requirement, so that the steel pipe concrete structure is greatly deformed; (4) the flange of the steel pipe which needs to be internally poured with concrete is a hollow annular flange, has small sectional area and is difficult to bear larger load.
Therefore, in order to solve the above technical problems, a novel connection structure is required to ensure the connection of the adjacent butt-jointed steel pipes in order to facilitate the connection between the adjacent butt-jointed steel pipes.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a connecting device which is convenient for stable connection between adjacent butted steel pipes.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the circumferential connecting device for the support assembly comprises a connecting sleeve, wherein the connecting sleeve is connected with the end part of an adjacent steel pipe through a bolt.
The connecting sleeve comprises an outer sleeve body.
The connecting sleeve also comprises an upper partition plate arranged on the inner wall of the outer sleeve body; the partition plate is positioned in the middle area of the sleeve joint through hole.
The connecting sleeve further comprises an inner sleeve body, the inner sleeve body and the outer sleeve body are coaxially distributed, and the inner sleeve body and the outer sleeve body are connected through a partition plate.
The end part of the inner sleeve body is arc-shaped.
The inner sleeve body, the partition plate and the outer sleeve body are of an integrated structure.
The plate thickness of the outer sleeve body is not less than that of the inner sleeve body.
The utility model has the advantages that:
the utility model discloses a circumferential connecting device for a support assembly, which uses the circumferential connecting device to connect adjacent steel pipes and overcomes the defects of long installation time consumption, low installation precision, poor joint performance and the like of the traditional connecting modes of welding, sleeves, flanges and the like adopted by the traditional adjacent butted steel pipes;
the connecting sleeve and the high-strength bolt are prefabricated in a factory, and the connection can be completed only by screwing the bolt on site, so that the operation is convenient, and meanwhile, the joint of the support assembly has higher rigidity and strength because the structure has enough strength;
in addition, the circumferential connecting device disclosed by the utility model has the advantages of simple structure, quickness and convenience in construction and reliability in connection, and can obviously improve the construction efficiency and the connection quality of concrete-filled steel tube connection.
Drawings
The contents of the various figures of the present specification and the labels in the figures are briefly described as follows:
fig. 1 is a perspective view of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a partial cross-sectional view of the present invention.
Fig. 4 is a schematic view of the structure of the present invention in use.
The labels in the above figures are:
1. the connecting sleeve comprises a connecting sleeve body 11, an outer sleeve body 12, a partition plate 13, an inner sleeve body 14 and a through bolt hole; 2. and (5) connecting the steel pipes.
Detailed Description
The following description of preferred embodiments of the utility model will be made in further detail with reference to the accompanying drawings.
A circumferential connecting device for a support assembly comprises a connecting sleeve 1, wherein the connecting sleeve 1 is connected with the end part of an adjacent steel pipe through a bolt; the annular connecting device is used for connecting adjacent steel pipes, so that the defects that the traditional connecting modes of welding, sleeves, flanges and the like adopted by the traditional adjacent butted steel pipes have long installation time consumption, low installation precision, poor joint performance and the like are overcome; the connecting sleeve 1 and the high-strength bolt are prefabricated in a factory, and the connection can be completed only by screwing the bolt on site, so that the connection stability of adjacent butted steel pipes can be ensured; meanwhile, the joint of the butted steel pipes has higher rigidity and strength; in addition, the circumferential connecting device disclosed by the utility model has the advantages of simple structure, quickness and convenience in construction and reliability in connection, and can obviously improve the construction efficiency and the connection quality of concrete-filled steel tube connection.
Specifically, the circumferential connecting device disclosed by the utility model mainly comprises a connecting sleeve 1, wherein the connecting sleeve 1 is used for bridging the opposite butted steel pipes, so that the bridging of the butted steel pipes is conveniently realized; and the connection between the adjacent butted steel pipes is facilitated, and finally, the steel pipe supporting mechanism and the supporting assembly are convenient to assemble and connect in the tunnel.
Further, the circumferential connecting device comprises a connecting sleeve 1, and the connecting sleeve 1 is connected with the adjacent steel pipes to be connected through bolts; the connecting sleeve 1 is sleeved at the joint of the two steel pipes to be connected in a butt joint mode, and then the two steel pipes 2 to be connected in a butt joint mode can be connected through the bolts in a matched mode.
Further, in the present invention, the connecting sleeve 1 includes an outer sleeve 11; the outer sleeve body 11 is an external supporting and limiting structure, so that the splicing and limiting of the steel pipes to be installed are facilitated, the dislocation of the two steel pipes to be connected 2 during butt joint is avoided, and the problem of dislocation and separation between the connecting sleeve 1 and the adjacent steel pipes to be connected 2 is also avoided; the outer sleeve body 11 is provided with a sleeve through hole; the sleeve-joint through holes provide places for the insertion of the adjacent steel pipes 2 to be connected, and meanwhile, the arrangement of the subsequent inner sleeve body 13 and the partition plate 12 in the outer sleeve body 11 is facilitated.
Furthermore, the connecting sleeve 1 also comprises a partition plate 12 arranged on the inner wall of the outer sleeve body 11; due to the arrangement of the partition plate 12, a good axial limiting function is achieved; the problem that the connecting sleeve 1 slides along the adjacent steel pipes 2 to be connected, and then the problem that the connecting sleeve 1 slides to be incapable of realizing stable connection between the adjacent steel pipes 2 to be connected is solved; in addition, in the utility model, the partition plate 12 is positioned in the middle area of the sleeving through hole; by the arrangement mode, the upper part and the lower part of the connecting sleeve 1 can form a sink groove structure, and the sink groove structure can be used for inserting and connecting the corresponding steel pipes 2 to be connected, so that the stability of connection between the connecting sleeve 1 and the adjacent steel pipes 2 to be connected can be well ensured.
Further, in the utility model, the connecting sleeve 1 further comprises an inner sleeve body 13, the inner sleeve body 13 and the outer sleeve body 11 are coaxially distributed, and the inner sleeve body 13 is connected with the outer sleeve body 11 through a partition plate 12; the inner sleeve body 13 plays a role in supporting and limiting, the inner sleeve body 13 is inserted into the end part of the steel pipe 2 to be connected, the inner sleeve body 13 serves as a plug connector structure, and based on the arrangement, the stability of connection between the connecting sleeve 1 and the adjacent steel pipe 2 to be connected can be better ensured.
Further, in the utility model, the end part of the inner sleeve body 13 is arc-shaped; the end part of the inner sleeve body 13 is arc-shaped, namely the plane of the end part of the inner sleeve body 13 is arc-shaped, so that the arrangement has good guiding effect, the steel pipe 2 to be connected is conveniently inserted in the sleeve of the connecting sleeve 1, and the inner sleeve body 13 is also conveniently inserted in the through hole at the end part of the steel pipe 2 to be connected; in other words, the connection assembly between the connecting sleeve 1 and the steel pipe 2 to be connected can be facilitated through the optimized design of the end structure of the inner sleeve body 13.
Furthermore, in the present invention, the inner sheath 13, the partition plate 12 and the outer sheath 11 are of an integrated structure; due to the design mode, the integrity of the connecting sleeve 1 is well guaranteed, and meanwhile, the actual processing and production of the connecting sleeve 1 are facilitated.
Further, in the present invention, the plate thickness of the outer jacket body 11 is not less than the plate thickness of the inner jacket body 13; such design can guarantee adapter sleeve 1 and adjacent steel pipe connection stability simultaneously, can also reduce the use amount of material, is favorable to product manufacturing cost's reduction.
The specific embodiment is as follows:
in the actual production process, the support assembly comprises a plurality of steel pipe support mechanisms; each supporting steel pipe mechanism comprises an annular steel pipe and supporting concrete; and the circumferential steel pipe comprises a plurality of steel pipes 2 to be connected; when the device is used in actual production, the steel pipes 2 to be connected, which are butted with each other, are connected through a circumferential connecting device.
In addition, in order to facilitate the connection between the steel pipes 2 to be connected and the adjacent circumferential connecting devices, through bolt holes 14 are distributed on the side walls of the two ends of each steel pipe 2 to be connected and used for connecting the adjacent steel pipes 2 to be connected.
The annular connecting device comprises a connecting sleeve 1 and a bolt.
The connecting sleeve 1 comprises a partition plate 12 (in a circumferential plate structure), an inner sleeve body 13 and an outer sleeve body 11; it can be regarded as the H-shaped section rotates around the neutral axis.
The inner sleeve body 13 and the outer sleeve body 11 are distributed with through bolt holes 14 which are arranged at intervals.
Inserting the steel pipe 2 to be connected into the connecting sleeve 1, rotating the connecting sleeve 1 to align the connecting sleeve 1 with the bolt hole on the corresponding steel pipe 2 to be connected, and then connecting through the bolt.
In addition, the connecting sleeve 1 can be in a straight line or a curve shape, namely the connecting sleeve 1 can be a straight cylinder or an arc cylinder, and is determined according to the shapes of two sections of steel pipes 2 to be connected with the connecting sleeve.
In addition, in the present invention, concrete is supported (i.e., poured concrete), which is high-fluidity, slightly-expanded fine aggregate concrete.
Longitudinal connection (beam assembly) exists among the steel pipe support mechanisms, so that the steel pipe concrete forms a space frame structure, the steel pipe support mechanisms cooperatively deform and integrally bear force, and the steel pipe concrete support mechanisms have good bearing performance in the longitudinal direction and the radial direction of the tunnel.
The longitudinal connection (beam assembly) adopts a thin steel pipe 2 to be connected, and two ends of the thin steel pipe 2 to be connected are respectively connected with two steel pipe concretes through welding.
Compared with other concrete-filled steel tubes for supporting, the annular connecting device is used for connection, and the defects that the traditional connection modes such as welding, the connecting sleeve 1 and the flange are long in installation time consumption, low in installation precision, poor in joint performance and the like are overcome.
The connecting sleeve 1 and the high-strength bolt are prefabricated in a factory, and the connection can be completed only by screwing the bolt on site, so that the joint has higher rigidity and strength. The annular connecting device has the characteristics of simple structure, quickness and convenience in construction, reliability in connection and capability of remarkably improving the construction efficiency and the connection quality of concrete-filled steel tubes.
It is clear that the specific implementation of the utility model is not restricted to the above-described embodiments, but that various insubstantial modifications of the inventive process concept and technical solutions are within the scope of protection of the utility model.
Claims (1)
1. The circumferential connecting device for the support assembly is characterized by comprising a connecting sleeve, wherein the connecting sleeve is connected with the end part of an adjacent steel pipe through a bolt;
the connecting sleeve comprises an outer sleeve body; the outer sleeve body is provided with a sleeving through hole;
the connecting sleeve also comprises an upper partition plate arranged on the inner wall of the outer sleeve body; the partition plate is positioned in the middle area of the sleeve joint through hole;
the connecting sleeve also comprises an inner sleeve body, the inner sleeve body and the outer sleeve body are coaxially distributed, and the inner sleeve body and the outer sleeve body are connected through a partition plate;
the end part of the inner sleeve body is arc-shaped;
the inner sleeve body, the partition plate and the outer sleeve body are of an integrated structure;
the plate thickness of the outer sleeve body is not less than that of the inner sleeve body;
the connecting sleeve is in a curve shape;
the support assembly comprises a plurality of steel pipe support mechanisms; each supporting steel pipe mechanism comprises an annular steel pipe and supporting concrete; and the circumferential steel pipe comprises a plurality of steel pipes to be connected; the steel pipes to be connected which are butted with each other are connected through a circumferential connecting device;
and the adjacent supporting steel pipe mechanisms are connected through a beam assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123094535.4U CN217028937U (en) | 2021-12-10 | 2021-12-10 | Hoop connecting device for support assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123094535.4U CN217028937U (en) | 2021-12-10 | 2021-12-10 | Hoop connecting device for support assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217028937U true CN217028937U (en) | 2022-07-22 |
Family
ID=82441360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123094535.4U Active CN217028937U (en) | 2021-12-10 | 2021-12-10 | Hoop connecting device for support assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217028937U (en) |
-
2021
- 2021-12-10 CN CN202123094535.4U patent/CN217028937U/en active Active
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