CN219220434U

CN219220434U - Shield segment

Info

Publication number: CN219220434U
Application number: CN202320795760.0U
Authority: CN
Inventors: 潘倩倩; 谢炜煜; 李宏福
Original assignee: China Railway Construction Wuxi Engineering Technology Development Co ltd; Zhongke Huakun Beijing Technology Co ltd
Current assignee: China Railway Construction Wuxi Engineering Technology Development Co ltd; Zhongke Huakun Beijing Technology Co ltd
Priority date: 2023-04-12
Filing date: 2023-04-12
Publication date: 2023-06-20
Anticipated expiration: 2033-04-12

Abstract

The utility model belongs to the technical field of shield construction, and provides a shield segment, which comprises a segment body, wherein an upper lapping plate and a lower lapping plate are fixedly connected to two opposite side walls of the segment body, which are perpendicular to the axis of the segment body, respectively, the bottom of the upper lapping plate on one segment body and the top of the lower lapping plate of the adjacent segment body are correspondingly arranged, a sealing assembly is arranged between the upper lapping plate and the adjacent segment body on one segment body, a locking part is arranged between the upper lapping plate and the lower lapping plate, circumferential clamping parts are arranged on two opposite side walls of the segment body, which are parallel to the axis direction of the segment body, the two opposite side walls of the segment body are detachably connected through the circumferential clamping parts, and grouting assemblies are arranged on the segment body and correspond to the circumferential clamping parts. The utility model can quickly splice the segments and ensure that the joint between the segments has good waterproof sealing performance.

Description

Shield segment

Technical Field

The utility model belongs to the technical field of shield construction, and particularly relates to a shield segment.

Background

At present, the shield tunneling machine is widely applied to the field of civil engineering such as tunnel excavation. In the working process of the shield tunneling machine, along with the tunneling of the shield tunneling machine, the shield segments need to be installed in the circumferential direction of the excavated segments in time. The shield segment is a key barrier of the tunnel, bears the loads such as soil pressure, underground water pressure and the like, and is a key component for directly influencing the waterproof performance of the tunnel.

The existing shield segment is usually made of high-strength concrete, and in use, segments are installed alternately on the left side and the right side of the segment in sequence from the segment at the lower part, and the segments are fixed by fastening connecting bolts. As disclosed in the patent publication No. CN114542112a, a shield tunnel segment with an assembled tenon is disclosed, and when two adjacent segments are connected, a bolt is inserted into a first bolt hole of one shield tunnel segment from a first hand hole of the shield tunnel segment, and after the first bolt hole and the first hand hole of the other shield tunnel segment, the bolts are fixed by nuts respectively in the first hand holes of the two shield tunnel segments. The pipe pieces can be effectively connected by the fixing mode, but in the construction process, field workers are required to penetrate through a plurality of bolts and tighten a plurality of nuts, so that the workload is large, and the construction progress is slow. In the shield pipeline spliced by the existing shield segments, soil moisture is easy to leak from joints due to the lack of effective waterproof measures, so that the waterproof performance of a tunnel is affected. Therefore, there is a need for a shield segment that can be quickly spliced and that provides a good watertight seal at the junction between segments.

Disclosure of Invention

The utility model aims to provide a shield segment to solve the problems, and achieve the purposes of quickly splicing segments and enabling the joint between segments to have good waterproof sealing performance.

In order to achieve the above object, the present utility model provides the following solutions: the utility model provides a shield constructs section of jurisdiction, includes the section of jurisdiction main part, on the section of jurisdiction main part with on two opposite lateral walls that the axis looks of section of jurisdiction main part is perpendicular respectively fixedly connected with lapping plate and lower lapping plate, one on the section of jurisdiction main part the bottom of last lapping plate with be adjacent the top of lower lapping plate corresponds the setting, one on the section of jurisdiction main part go up the lapping plate with be provided with seal assembly between the section of jurisdiction main part adjacently, go up the lapping plate with be provided with locking portion down between the lapping plate, on the section of jurisdiction main part with be provided with circumference joint portion on two opposite lateral walls that the axis direction of section of jurisdiction main part paralleled, two are adjacent the section of jurisdiction main part passes through circumference joint portion can dismantle the connection, be provided with the grout subassembly in the section of jurisdiction main part with circumference joint portion corresponds the setting.

Preferably, the locking part comprises a cavity formed in the lower lapping plate and a clamping groove formed in the upper lapping plate, a plurality of openings are formed in the top of the cavity, telescopic blocks are respectively and slidably connected in the openings, flanges are arranged at the bottoms of the telescopic blocks, the flanges are abutted to the inner tops of the cavities, springs are abutted between the telescopic blocks and the bottoms of the cavities, a plurality of telescopic blocks are correspondingly arranged in the clamping grooves, and a pre-blocking assembly is arranged between the telescopic blocks and the lower lapping plate.

Preferably, the pre-blocking assembly comprises two groups of sliding grooves formed in two sides of the lower lapping plate, the two groups of sliding grooves are respectively arranged in parallel with the axis of the duct piece main body, a baffle is connected between the two groups of sliding grooves in a sliding manner, the bottom surface of the baffle is correspondingly arranged with the top surface of the telescopic block, the baffle is far away from a plurality of pushing plates fixedly connected with the side wall of the duct piece main body, and the pushing plates are in butt joint with the side wall adjacent to the upper lapping plate.

Preferably, the circumferential clamping portion comprises a dovetail through groove and a boss, the boss is fixedly connected to one side wall of the duct piece main body, which is parallel to the axial direction of the duct piece main body, the dovetail through groove is formed in the other side wall of the duct piece main body, which is parallel to the axial direction of the duct piece main body, the boss on the duct piece main body and the dovetail through groove on the duct piece main body are correspondingly arranged, and the grouting assembly is communicated with the inside of the dovetail through groove.

Preferably, the grouting assembly comprises a first pouring hole and a second pouring hole, wherein the first pouring hole and the second pouring hole are respectively formed in the inner ring side wall of the duct piece main body and are communicated with the inside of the dovetail through groove.

Preferably, the sealing assembly comprises a sealing rubber strip fixedly connected to the side wall of the upper lapping plate far away from the duct piece main body, and a plurality of deformation grooves are formed in the sealing rubber strip along the extending direction of the sealing rubber strip.

The utility model has the following technical effects: when two adjacent duct pieces are spliced in the axial direction, the duct pieces are pushed to enable the lower lapping plate to slide to the lower side of the upper lapping plate in parallel for lapping, and the locking part is mainly used for automatically locking the lower lapping plate and the upper lapping plate after the lower lapping plate and the upper lapping plate are lapped. The circumferential clamping part has the main function of enabling two adjacent duct pieces to be connected in the circumferential direction simultaneously when the duct pieces are pushed to be assembled; the sealing component has the main function of sealing a gap between the lower lapping plate and the upper lapping plate after being locked, so that the waterproof performance is improved; the main effect of the grouting component is to grouting in the circumferential clamping part, filling up gaps in the circumferential clamping part, and further ensuring waterproof performance. In the whole, the utility model can quickly splice the segments, reduce the construction workload, improve the construction efficiency, ensure that the joint between the segments has good waterproof sealing performance and improve the overall waterproof performance of the tunnel.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a top view of a segment of the present utility model;

FIG. 2 is a right side cross-sectional view of the segment of the present utility model;

FIG. 3 is a left side cross-sectional view of the segment of the present utility model;

FIG. 4 is a front cross-sectional view of a segment of the present utility model;

FIG. 5 is a schematic view of a sealing strip of the present utility model;

1, a duct piece main body; 2. dovetail through grooves; 3. a chute; 4. a telescopic block; 5. a baffle; 6. a first pouring hole; 7. a second pouring hole; 8. an upper lapping plate; 9. a sealing rubber strip; 10. a boss; 11. a spring; 12. a pushing plate; 13. a deformation groove; 14. a lower lap plate; 15. a clamping groove; 16. an opening.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Referring to fig. 1 to 5, the utility model provides a shield segment, which comprises a segment body 1, wherein an upper lapping plate 8 and a lower lapping plate 14 are fixedly connected to two opposite side walls of the segment body 1, which are perpendicular to the axis of the segment body 1, respectively, the bottom of the upper lapping plate 8 on one segment body 1 and the top of the lower lapping plate 14 of the adjacent segment body 1 are correspondingly arranged, a sealing assembly is arranged between the upper lapping plate 8 on one segment body 1 and the adjacent segment body 1, a locking part is arranged between the upper lapping plate 8 and the lower lapping plate 14, two opposite side walls of the segment body 1, which are parallel to the axis direction of the segment body 1, are provided with circumferential clamping parts, the two adjacent segment bodies 1 are detachably connected through the circumferential clamping parts, a grouting assembly is arranged on the segment body 1, and the grouting assembly is correspondingly arranged with the circumferential clamping parts.

When carrying out the axial splice to two adjacent pipe pieces, through using the shield segment kludge that commonly used to promote the pipe piece, make the parallel below that slides to last overlap plate 8 of lower overlap plate 14 overlap joint, the main effect of locking portion is automatic lock down lower overlap plate 14 and last overlap plate 8 after lower overlap plate 14 and last overlap plate 8 overlap joint, prevents taking place axial displacement between two pipe pieces. The circumferential clamping part has the main function of enabling two adjacent duct pieces to be connected in the circumferential direction simultaneously when the duct pieces are pushed to be assembled; the sealing component has the main function of sealing a gap between the lower lapping plate 14 and the upper lapping plate 8 after being locked, so that the waterproof performance is improved; the main effect of the grouting component is to grouting in the circumferential clamping part, filling up gaps in the circumferential clamping part, and further ensuring waterproof performance. In the whole, the utility model can quickly splice the segments, and simultaneously can ensure that the joint between the segments has good waterproof sealing performance and improve the overall waterproof performance of the tunnel.

In a further optimization scheme, the duct piece main body 1, the upper lapping plate 8 and the lower lapping plate 14 are all made of basalt fiber composite materials.

The basalt fiber composite material has the advantages of low density, good elongation at break, higher tensile elastic modulus, high mechanical strength, good heat insulation performance and water absorption, is particularly suitable for being used in tunnels, and is beneficial to meeting the requirements of tunnel construction on water resistance, heat insulation and durability.

Further optimizing scheme, locking portion is including seting up the cavity in lower lapping plate 14 and seting up the screens recess 15 in last lapping plate 8, and a plurality of openings 16 have been seted up at the top of cavity, and sliding connection has flexible piece 4 in a plurality of openings 16 respectively, and the bottom of flexible piece 4 is provided with the flange, and the inboard top butt of flange and cavity has spring 11 with the butt between the bottom of flexible piece 4 and cavity, and a plurality of flexible pieces 4 correspond the setting with screens recess 15, are provided with the fender subassembly in advance between a plurality of flexible pieces 4 and the lower lapping plate 14.

Further optimizing scheme, keep off the subassembly in advance including seting up two sets of spouts 3 in lower overlap plate 14 both sides, two sets of spouts 3 respectively with the axis parallel arrangement of segment main body 1, sliding connection has baffle 5 between two sets of spouts 3, the bottom surface of baffle 5 corresponds the setting with the top surface of a plurality of expansion blocks 4, fixedly connected with a plurality of push plates 12 on the lateral wall that segment main body 1 was kept away from to baffle 5, a plurality of push plates 12 are close to the lateral wall looks butt of overlap plate 8 with adjacent segment main body 1.

When the two segments are connected in the axial direction, the baffle plate 5 on the segment to be spliced is positioned above the telescopic blocks 4, so that the telescopic blocks 4 sink into the openings 16 and compress the springs 11, and the pushing plate 12 on the baffle plate 5 extends out of the edge of the lower lapping plate 14. During splicing, the shield segment erector continuously moves the segment by pushing the upper lapping plate 8 of the segment to enable the lower lapping plate 14 to approach the adjacent segment fixed in place and enabling the pushing plate 12 on the baffle plate 5 to abut against the side wall of the segment main body 1 of the adjacent segment, the pushing plate 12 pushes the baffle plate 5 to slide in the chute 3 and gradually exposes a plurality of telescopic blocks 4 on the segment, when the lower lapping plate 14 of the segment abuts against the side wall of the adjacent segment, the baffle plate 5 does not shield the telescopic blocks 4 any more, and the telescopic blocks 4 are ejected out under the action of springs and extend into the clamping grooves 15 of the upper lapping plate 8 of the adjacent segment, so that the axial locking of the two segments is completed.

Further optimizing scheme, circumference joint portion includes forked tail logical groove 2 and boss 10, and boss 10 fixed connection is on the lateral wall that the axis direction of section of jurisdiction main part 1 and section of jurisdiction main part 1 paralleled, and forked tail logical groove 2 is offered on the other lateral wall that the axis direction of section of jurisdiction main part 1 and section of jurisdiction main part 1 paralleled, and boss 10 on a section of jurisdiction main part 1 and forked tail logical groove 2 on the adjacent section of jurisdiction main part 1 correspond the setting, grout assembly and forked tail logical inslot 2 intercommunication.

When two segments are connected in the circumferential direction, first, the lug boss 10 or the dovetail through groove 2 of the segment is aligned with the dovetail through groove 2 or the lug boss 10 on the segment adjacent in the circumferential direction, the segment to be spliced is pushed by using the shield segment splicing machine, and the lug boss 10 at the joint of the two segments is slidably clamped into the dovetail through groove 2, so that the splicing in the circumferential direction can be completed.

Further optimizing scheme, the grout subassembly includes first pouring hole 6 and second pouring hole 7, and first pouring hole 6 and second pouring hole 7 are seted up respectively on the inner circle lateral wall of section of jurisdiction main part 1 and are linked together with the inside of forked tail logical groove 2.

After the splicing of the segments is completed, cement can be poured into the first pouring hole 6, and after the cement overflows into the second pouring hole 7, the pouring is completed, so that the filling of the connecting gap between the dovetail through groove 2 and the boss 10 can be completed.

Further optimizing scheme, seal assembly includes joint strip 9, and joint strip 9 fixed connection is kept away from on the lateral wall of section of jurisdiction main part 1 on last overlap plate 8, has seted up a plurality of deformation grooves 13 along joint strip 9's extending direction in the joint strip 9.

The main function of the deformation grooves 13 is to ensure that the sealing rubber strip 9 has certain mechanism rigidity, and can ensure that the sealing rubber strip 9 can smoothly deform when two duct pieces are spliced, fill gaps at the joint and ensure good waterproof performance.

The working procedure of this embodiment is as follows: when the tunnel duct piece is paved, the baffle plates 5 on the paved duct piece are all positioned above the telescopic blocks 4, after the shield duct piece erector grabs a duct piece, the duct piece is placed in front of the position where the duct piece is to be installed, the operation equipment enables the boss 10 or the dovetail through groove 2 of the duct piece to be aligned with the dovetail through groove 2 or the boss 10 on the adjacent duct piece, then the operation equipment pushes the upper lapping plate 8 of the duct piece to enable the duct piece to move towards the rear and fixed in place, and the boss 10 slides and clamps in the dovetail through groove 2 in the moving process, so that the clamping in the circumferential direction is completed. The pipe piece is pushed continuously, the pushing plate 12 on the pipe piece is abutted with the pipe piece adjacent to the axial direction, so that in the pipe piece moving process, the baffle plate 5 moves backwards relative to the telescopic blocks 4, the telescopic blocks 4 are exposed gradually, when the baffle plate 5 does not block the telescopic blocks 4 any more, the telescopic blocks 4 are ejected upwards under the action of the elasticity of the bottom springs of the telescopic blocks, and are clamped into the clamping grooves 15 of the upper lapping plates 8 of the adjacent pipe piece, and locking in the axial direction is completed. And then, pouring cement into the first pouring hole 6 until the cement overflows from the second pouring hole 7, and completing filling of the connecting gap between the dovetail through groove 2 and the boss 10, so that the assembly work of the duct piece can be completed.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims

1. The utility model provides a shield constructs section of jurisdiction which characterized in that: including segment main part (1), on segment main part (1) with on the axis looks vertically of segment main part (1) two opposite lateral walls respectively fixedly connected with go up strap (8) and down strap (14), one on segment main part (1) go up the bottom of strap (8) and be adjacent on segment main part (1) the top of strap (14) down corresponds the setting, one on segment main part (1) go up strap (8) with be adjacent be provided with seal assembly between segment main part (1), go up strap (8) with be provided with locking portion down between strap (14), on segment main part (1) with on two opposite lateral walls that the axis direction of segment main part (1) paralleled are provided with circumference joint portion, two adjacent segment main part (1) are passed through circumference joint portion can dismantle the connection, be provided with the grout subassembly on segment main part (1), the grout subassembly with circumference joint portion corresponds the setting.

2. The shield segment of claim 1, wherein: the locking part comprises a cavity formed in the lower lapping plate (14) and a clamping groove (15) formed in the upper lapping plate (8), a plurality of openings (16) are formed in the top of the cavity, telescopic blocks (4) are connected in a sliding mode in the openings (16), flanges are arranged at the bottoms of the telescopic blocks (4), springs (11) are abutted to the bottoms of the telescopic blocks (4) and the cavities, the telescopic blocks (4) and the clamping grooves (15) are correspondingly arranged, and a pre-blocking assembly is arranged between the telescopic blocks (4) and the lower lapping plate (14).

3. The shield segment of claim 2, wherein: the baffle assembly is in including seting up two sets of spouts (3) of lower overlap plate (14) both sides, two sets of spout (3) respectively with the axis parallel arrangement of section of jurisdiction main part (1), two sets of sliding connection has baffle (5) between spout (3), the bottom surface of baffle (5) and a plurality of the top surface of flexible piece (4) correspond the setting, baffle (5) are kept away from fixedly connected with a plurality of push plates (12) on the lateral wall of section of jurisdiction main part (1), a plurality of push plate (12) are close to with adjacent section of jurisdiction main part (1) the lateral wall looks butt of last overlap plate (8).

4. The shield segment of claim 1, wherein: circumference joint portion includes forked tail logical groove (2) and boss (10), boss (10) fixed connection be in on section of jurisdiction main part (1) with on the lateral wall that the axis direction of section of jurisdiction main part (1) paralleled, forked tail logical groove (2) are seted up on section of jurisdiction main part (1) with on the another lateral wall that the axis direction of section of jurisdiction main part (1) paralleled, one on section of jurisdiction main part (1) boss (10) with adjacent on section of jurisdiction main part (1) forked tail logical groove (2) correspond the setting, grout subassembly with inside intercommunication of forked tail logical groove (2).

5. The shield segment of claim 4, wherein: the grouting assembly comprises a first pouring hole (6) and a second pouring hole (7), wherein the first pouring hole (6) and the second pouring hole (7) are respectively formed in the inner ring side wall of the duct piece main body (1) and are communicated with the inside of the dovetail through groove (2).

6. The shield segment of claim 1, wherein: the sealing assembly comprises a sealing rubber strip (9), the sealing rubber strip (9) is fixedly connected to the side wall, far away from the duct piece main body (1), of the upper lapping plate (8), and a plurality of deformation grooves (13) are formed in the sealing rubber strip (9) along the extending direction of the sealing rubber strip (9).