CN210768778U

CN210768778U - Steel sleeve structure

Info

Publication number: CN210768778U
Application number: CN201921853190.6U
Authority: CN
Inventors: 孙盼盼; 王平孝; 岳红波; 梁聪; 朱俊涛; 谢有军; 王旭波; 杨猛; 梁磊; 曹雪萌
Original assignee: Third Engineering Co Ltd of China Railway Seventh Group Co Ltd
Current assignee: Third Engineering Co Ltd of China Railway Seventh Group Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-06-16
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses a steel sleeve structure, which belongs to the technical field of subway tunnel construction and solves the problems of installation, disassembly and hoisting operation of receiving and starting the steel sleeve in a closed environment, the structure comprises a transition ring fixed with a portal steel ring, one side of the transition ring, which is far away from the portal steel ring, is fixed with a plurality of sections of barrels arranged in sequence, two adjacent barrels are connected in a sealing way, the barrels comprise a first ring piece, a second ring piece, a third ring piece and a fourth ring piece which are assembled in sequence and then are in a whole circle, and the first ring piece, the second ring piece, the third ring piece and the fourth ring piece are connected in a sealing way; one side that the barrel deviates from the transition ring is equipped with the rear end cap of components of a whole that can function independently package assembly, and the back end cap deviates from one side of transition ring and establishes the bracing that the slope was placed, and the both ends of bracing are connected with rear end cap and connecting seat respectively, and the base is established to the below of barrel, the fourth ring fixed connection of base and barrel. The utility model discloses make things convenient for ann of steel sleeve to tear open and hoist and mount, reduced the risk of steel sleeve construction.

Description

Steel sleeve structure

Technical Field

The utility model belongs to the technical field of subway tunnel construction, concretely relates to steel sleeve structure.

Background

The existing shield machine is started and received by using a steel sleeve, the steel sleeve needs to be lowered to the ground from the ground by using a hoisting well in the installation and positioning process of the steel sleeve, the method is suitable for conventional operation with the hoisting well, but in a special closed environment, when the shield machine is started and received, because a closed section ground pipeline and traffic are recovered, the ground has no hoisting operation condition, the traditional steel sleeve structure and the construction method cannot meet the requirements of the working condition, and the construction difficulty is high.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a steel sleeve structure to solve the not enough of prior art.

The technical scheme of the utility model is that:

a steel sleeve structure comprises a transition ring fixedly connected with a portal steel ring, wherein a plurality of sections of sequentially arranged cylinders are fixedly arranged on one side of the transition ring, which is far away from the portal steel ring, and the adjacent two cylinders are in sealing connection; a rear end cover of a split assembly structure is arranged on one side of the barrel body, which is far away from the transition ring, an inclined strut which is obliquely arranged is arranged on one side of the rear end cover, which is far away from the transition ring, and two ends of the inclined strut are respectively connected with the rear end cover and the connecting seat; the lower part of the barrel is provided with a base for supporting the whole device, and the base is fixedly connected with the fourth ring of the barrel.

Preferably, the bracing is one of jack or pneumatic cylinder, one end and rear end cap fixed connection of jack or pneumatic cylinder, the other end and the connecting seat of jack or pneumatic cylinder are articulated, the connecting seat is fixed on the ground.

Preferably, the inclined strut is one of I-steel or steel support, one end of the inclined strut is fixedly connected with the rear end cover, the other end of the inclined strut is hinged with the connecting seat, and the connecting seat is fixed on the foundation.

Preferably, the transition ring is provided with a grouting hole convenient for grouting.

Preferably, a plurality of independent cavity structures have been seted up in the base, and every cavity structure intussuseption is filled with the compound damping granule that is used for shock insulation damping, compound damping granule includes spherical rubber granule and shot particle that the diameter differs, the diameter scope of spherical rubber granule and shot particle is between 8mm to 11mm, the fill volume of spherical rubber granule and shot particle is duty 75% to 80% of cavity structure volume, four sides and the lower surface of base all are provided with the barb structure of being convenient for with the firm fixed of ground part.

Preferably, the rear end cover comprises a plurality of fan-shaped pieces, and the fan-shaped pieces are sequentially assembled to form a shape of a whole circle or a rectangle and are used for sealing one end of the cylinder body, which is far away from the steel ring of the tunnel door.

Preferably, the sealing connection is in the structural form: the concave-convex structure that makes things convenient for the block to connect all is provided with on the face of being connected of first ring piece, second ring piece, third ring piece and fourth ring piece, the mounting hole that a plurality of connecting pieces of being convenient for pass through is still seted up on the concave-convex structure, is provided with the sealed pad of rubber and sealed glue between concave-convex structure's the face of being connected.

Preferably, the connecting member includes one of a connecting bolt or a combination of a connecting bolt and a pin.

Compared with the prior art, the utility model discloses a steel sleeve structure has solved and has carried out the ann that steel sleeve received and originated, tear open and hoist and mount the problem of operation in airtight environment, adopts the split and subtracts the compound structure that the heavy slow vibration for free weight and size reduce, made things convenient for greatly that ann of steel sleeve tears open and hoist and mount, reduced the risk of steel sleeve construction, tear open for the ann of closed finite space steel sleeve, hoist and mount provide the operation facility, and the work efficiency is improved, and the security has been guaranteed, therefore, the clothes hanger is strong in practicability, and is worth promoting.

Drawings

Fig. 1 is a schematic view of the overall structure of a steel sleeve of the present invention;

fig. 2 is a schematic sectional view of a steel sleeve according to the present invention.

Detailed Description

The utility model provides a steel sleeve structure, the following combines fig. 1 to fig. 2 to explain the utility model.

Example 1

As shown in fig. 1 and 2, the utility model provides a steel sleeve structure, include the transition ring 3 with portal steel ring fixed connection, one side of transition ring 3 deviating from portal steel ring is fixed and is provided with barrel 4 of a plurality of sections that arrange in proper order, sealing connection between two adjacent barrel 4, barrel 4 is including assembling first ring piece 41, second ring piece 42, third ring piece 43 and fourth ring piece 44 that the back is whole circle in proper order, sealing connection between first ring piece 41, second ring piece 42, third ring piece 43 and the fourth ring piece 44; a rear end cover 2 of a split assembly structure is arranged on one side of the barrel 4, which is far away from the transition ring 3, an inclined strut 1 which is obliquely arranged is arranged on one side of the rear end cover 2, which is far away from the transition ring 3, and two ends of the inclined strut 1 are respectively connected with the rear end cover 2 and the connecting seat; a base 6 for supporting the whole device is arranged below the cylinder 4, and the base 6 is fixedly connected with a fourth ring sheet 44 of the cylinder 4.

The adopted sealing connection structure form is specifically as follows: all be provided with the concave-convex structure that makes things convenient for the block to connect on the face of being connected of first ring piece 41, second ring piece 42, third ring piece 43 and fourth ring piece 44, the mounting hole that a plurality of connecting pieces of being convenient for 5 pass through is still seted up on the concave-convex structure, is provided with the sealed pad of rubber and sealed glue between concave-convex structure's the face of being connected.

Wherein, the connecting piece 5 can adopt one of connecting bolts or a combination of the connecting bolts and pins.

Furthermore, the bracing 1 is one of I-steel or steel shotcrete, the one end and the rear end cap 2 fixed connection of bracing 1, the other end and the connecting seat of bracing 1 are articulated, the connecting seat is fixed on the ground.

Furthermore, a grouting hole convenient for grouting reinforcement is formed in the transition ring 3.

Further, a plurality of independent cavity structures have been seted up in base 6, and every cavity structure intussuseption is filled with the compound damping granule that is used for shock insulation damping, compound damping granule includes spherical rubber granule and shot particle that the diameter differs, the diameter scope of spherical rubber granule and shot particle is between 8mm to 11mm, the fill volume of spherical rubber granule and shot particle is duty-cycled cavity structure volume 75% to 80%, four sides and the lower surface of base 6 all are provided with the barb structure of being convenient for with the firm fixed of ground part.

By adopting the mode of arranging the damping particles in the independent cavity, when vibration is generated, the damping particles are utilized to buffer the vibration, so that the amplitude of the vibration is reduced, the influence of the vibration generated at the periphery on the structure of the steel sleeve is isolated, and the transmission of the vibration generated inside the steel sleeve to the outside is blocked.

Furthermore, the rear end cover 2 comprises a plurality of fan-shaped pieces, and the fan-shaped pieces are sequentially assembled to form one of a full circle or a rectangle and are used for sealing one end of the barrel 4, which is far away from the steel ring of the tunnel door.

Example 2

On the basis of the embodiment 1, the structure of the inclined strut 1 is further optimized and designed so as to improve the safety and stability of the whole structure and improve the adaptability. Specifically, the bracing 1 adopts one of jack or pneumatic cylinder, and the one end and the rear end cap 2 fixed connection of jack or pneumatic cylinder, the other end and the connecting seat of jack or pneumatic cylinder are articulated, the connecting seat is fixed on the ground.

On the whole, the utility model discloses a split structure, monomer weight reduction can conveniently hoist and mount and transport, and its construction assembly method includes following step:

s1, when concrete is poured on the side wall of the main body of the subway station, pre-embedding the portal circular steel ring according to design coordinates and elevations in advance, and welding the transition ring 3 and the portal circular steel ring by using steel plates;

s2, hoisting the base 6 to the side of the transition ring 3, which is far away from the portal circular steel ring, so that the base 6 is close to the transition ring 3;

s3, placing the fourth ring piece 44 above the base 6, connecting the fourth ring piece 44 with the base 6 by a connecting piece, and then welding again to enable the fourth ring piece 44 and the base 6 to form a whole; sequentially assembling a first ring piece 41 and a third ring piece 43 on two sides of a fourth ring piece 44, assembling a second ring piece 42 between the first ring piece 41 and the third ring piece 43 to form the cylinder body 4, putting a rubber sealing gasket in a connecting seam in advance before assembling all the cylinder body 4 ring pieces to be assembled, smearing a sealing glue on the rubber sealing gasket, and then sealing and connecting through a connecting piece 5;

s4, repeating S3, and assembling the barrel 4 with the residual number of sections;

s5, assembling the fan-shaped sheets with the cylinder body in sequence according to the sequence of gradually mounting from bottom to top, connecting the fan-shaped sheets with the cylinder body by using high-strength bolts, forming a rear end cover 2 structure by using a plurality of fan-shaped sheets, and sealing all connecting joints by using a compound mode of rubber sealing gaskets and sealing glue;

s6, connecting the transition ring 3 with the cylinder 4 close to the transition ring 3 by using a high-strength bolt, and fixing the transition ring 3 and the portal circular steel ring by full welding;

s7, welding a plurality of inclined strut vertexes at one end of the rear end cover 2 departing from the cylinder body 4, propping one end of the inclined strut 1 on the inclined strut vertexes, and welding the other end of the inclined strut 1 on the embedded steel plate of the connecting seat.

The utility model discloses have the application in the engineering, specific illustration is as follows:

the Suzhou subway 5 number line is marked 5, the bamboo garden road station is a subway 3 and 5 number line transfer station, the top plate of the station is completely backfilled, the ground recovery pipeline is moved and changed to a traffic lane, the 5 number line is constructed on a bottom plate under the existing line 3 number line, and the operation environment is fully closed.

The steel sleeve is a barrel-shaped structure with an opening at one end, the total receiving length of the whole steel sleeve is 11170mm, and the steel sleeve consists of 1 transition connecting ring with the length of 700mm, 4 sections of barrel bodies, a rear end cover with the length of 2500mm and 1 rear end cover with the length of 470mm, a left I-steel support, a right I-steel support and the like.

The steel sleeve part needs to be installed with a gantry crane in advance for hoisting towards the bottom plate to be matched, only one hoisting hole is reserved at the east end of the bamboo garden path layer, the size of the reserved hoisting hole is 4000mm × 5000mm, the clearance between the station layer and the top plate is 4950mm, the space is narrow, and only the gantry crane with the maximum hoisting tonnage of 10 tons can be installed. The size of a construction site is rechecked in advance, the steel sleeve disassembly scheme is determined to be up and down 100 degrees, and the steel sleeve disassembly scheme is determined to be left and right 80 degrees, so that the size of a single component is reduced, the hoisting weight is also reduced, and the maximum weight of each component is ensured not to be more than 10 tons.

The steel sleeve component is transported to the south end of the ground of the bamboo garden road station, and is placed to the line No. 3 to bear one layer of medium plate through the truck crane, and then is horizontally transported to the east end 10 tons of gantry cranes through the cooperation of the forklift and the plate trailer, and each component is gradually lifted to the east end to bear three layers of base plates through the gantry cranes.

The bamboo garden road negative three-layer bottom plate east-west direction total length is 170m, treat that all parts of steel sleeve hang and put to the bottom plate after, need the level to transport to west end, every 10m carries out the manual work through the water drill on No. 5 line negative two-layer medium plate and gets the hole, installation electric block and chain block, supplementary cooperation lifts by crane each part of steel sleeve and transports to west end, the work degree of difficulty is big, the construction period is long, the unable hoist and mount and the transportation of conventional large-scale steel sleeve.

On west end burden double-deck medium plate in advance, the hole is got to the installation position top of steel sleeve, adopts the water to bore and carries out the manual work, provides the hoisting point for the equipment of steel sleeve.

After all parts of the steel sleeve are transported to the west end, the first section of the cylinder body base is hoisted in place through the electric hoist, then the cylinders are installed according to bilateral symmetry, and finally the top cylinder is installed. The barrel body is connected by adopting a high-strength bolt, and a bolt gap is sealed by adopting a rubber sealing gasket and a vulcanizing sealant.

And (3) installing a second section of barrel, a third section of barrel and a fourth section of barrel by adopting the same method steps as 7, connecting the barrels by adopting high-strength bolts, and sealing gaps of the bolts by adopting rubber sealing gaskets and vulcanizing sealant.

After the barrel is installed, a rear end cover is installed, the rear end cover is decomposed into 4 parts according to 90 degrees on average and is installed step by step from bottom to top, the rear end cover is connected with the barrel through high-strength bolts, and bolt gaps are sealed through rubber gaskets and vulcanizing sealants.

And (3) installing a tunnel portal transition ring, wherein the transition ring is consistent with the decomposition method of the barrel body, the transition ring is decomposed at an angle of up to down 100 degrees and left to right 80 degrees, one end of the transition ring is connected with the barrel body through a high-strength bolt, and the other end of the transition ring is welded and fixed with the tunnel portal embedded steel ring through an arc-shaped steel plate. Two side supports and a rear inclined support are arranged on two sides of the steel sleeve barrel body and the rear end cover, the bottom of the inclined support is welded on the pre-buried steel plate of the bottom plate, the top of the inclined support is welded at a reserved position of the rear end cover, and the steel sleeve is assembled.

The utility model discloses take the ann's way of tearing open of subsection, segmentation with steel sleeve barrel, transition ring and rear end cap part is whole to be assembled, reduced the size and the hoist and mount weight of each part of steel sleeve, greatly reduced the construction degree of difficulty of operation under airtight space, be convenient for hoist and mount, horizontal transport and installation, construction operations such as demolish, this operating mode and construction method are internal first case, do not have relevant precedent to supply the reference.

The utility model discloses a steel sleeve structure adopts split and subtracts the compound construction that heavy slow shakes for free weight and size reduce, have made things convenient for ann of steel sleeve to tear open and hoist and mount greatly, have reduced the risk of steel sleeve construction, tear open for ann of closed finite space steel sleeve, hoist and mount and provide the operation facility, improved work efficiency, the practicality is strong, is worth promoting.

The above disclosure is only for the preferred embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be considered by those skilled in the art shall fall within the protection scope of the present invention.

Claims

1. The steel sleeve structure is characterized by comprising a transition ring (3) fixedly connected with a portal steel ring, wherein a plurality of sections of barrel bodies (4) which are sequentially arranged are fixedly arranged on one side of the transition ring (3) away from the portal steel ring, two adjacent barrel bodies (4) are in sealing connection, each barrel body (4) comprises a first ring sheet (41), a second ring sheet (42), a third ring sheet (43) and a fourth ring sheet (44) which are sequentially assembled into a whole circle, and the first ring sheet (41), the second ring sheet (42), the third ring sheet (43) and the fourth ring sheet (44) are in sealing connection; a rear end cover (2) of a split assembly structure is arranged on one side of the barrel (4) departing from the transition ring (3), an inclined strut (1) which is placed in an inclined manner is arranged on one side of the rear end cover (2) departing from the transition ring (3), and two ends of the inclined strut (1) are respectively connected with the rear end cover (2) and the connecting seat; a base (6) used for supporting the whole device is arranged below the barrel body (4), and the base (6) is fixedly connected with a fourth ring piece (44) of the barrel body (4).

2. A steel sleeve structure as claimed in claim 1, wherein the brace (1) is one of a jack or a hydraulic cylinder, one end of the jack or the hydraulic cylinder is fixedly connected with the rear end cover (2), the other end of the jack or the hydraulic cylinder is hinged with a connecting seat, and the connecting seat is fixed on the foundation.

3. The steel sleeve structure as claimed in claim 1, wherein the bracing (1) is one of an i-steel or a steel support, one end of the bracing (1) is fixedly connected with the rear end cover (2), the other end of the bracing (1) is hinged with a connecting seat, and the connecting seat is fixed on a foundation.

4. A steel sleeve structure according to claim 1, characterized in that the transition ring (3) is provided with grouting holes for facilitating grouting.

5. The steel sleeve structure as claimed in claim 1, wherein a plurality of independent cavity structures are formed in the base (6), each cavity structure is filled with composite damping particles for vibration isolation and vibration damping, the composite damping particles comprise spherical rubber particles and shot particles with different diameters, the diameter range of the spherical rubber particles and the shot particles is 8mm to 11mm, the filling volume of the spherical rubber particles and the shot particles occupies 75% to 80% of the volume of the cavity structure, and barb structures convenient for being firmly fixed with a foundation part are arranged on four side surfaces and the lower surface of the base (6).

6. A steel sleeve structure as claimed in claim 1, characterised in that the rear end cap (2) comprises a plurality of segments which are assembled in sequence to form one of a full circle or a rectangle for closing the end of the cylinder (4) remote from the steel ring of the portal.

7. A steel casing structure as claimed in claim 1, characterised in that the sealing connection is in the form of: the concave-convex structure that makes things convenient for the block to connect all is provided with on the face of being connected of first ring piece (41), second ring piece (42), third ring piece (43) and fourth ring piece (44), a plurality of mounting holes that connecting piece (5) of being convenient for pass through are still seted up to concave-convex structure, are provided with the sealed pad of rubber and sealed glue between concave-convex structure's the face of being connected.

8. A steel casing structure as claimed in claim 7, characterised in that the coupling (5) comprises one of a coupling bolt or a combination of a coupling bolt and a pin.