CN216665628U

CN216665628U - Duct piece for tunnel

Info

Publication number: CN216665628U
Application number: CN202220209221.XU
Authority: CN
Inventors: 程鹏; 张雯雯; 李洋; 罗长明; 李应飞; 魏旭鹏; 李鹏; 王宁
Original assignee: China Railway Engineering Equipment Group Co Ltd CREG
Current assignee: China Railway Engineering Equipment Group Co Ltd CREG
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-06-03
Anticipated expiration: 2032-01-20

Abstract

The utility model discloses a duct piece for a tunnel, which solves the technical problems of low assembly efficiency, poor waterproof performance and high installation cost of the existing tunnel duct piece. Each ring pipe piece comprises at least two pipe pieces which are spliced and matched, a concave-convex matched positioning structure is arranged at the circumferential joint of the adjacent pipe pieces, the adjacent pipe pieces are spliced and positioned through the positioning structure, and a first sealing structure, a second sealing structure, a third sealing structure and a fourth sealing structure are arranged in the radial direction of the positioning structure to form a four-channel waterproof structure of a tunnel structure. The utility model adopts a plurality of waterproof measures, and can effectively prevent the phenomena of water seepage and water leakage in the operation process of the tunnel; the structure concatenation of segment ring adopts location structure, easily the location of assembling of section of jurisdiction, is difficult for producing and assembles error and wrong platform, can also prolong the infiltration route, simultaneously, forms a self-locking effect between pipe segment and the section of jurisdiction, has greatly strengthened section of jurisdiction structural strength, rigidity, stability.

Description

Duct piece for tunnel

Technical Field

The utility model relates to the technical field of tunnel lining, in particular to a duct piece for a tunnel.

Background

The tunnel structure mainly adopts prefabricated assembled concrete lining structure, and this structure is connected into whole with the section of jurisdiction by hoop bolted joint and vertical bolted joint.

The existing tunnel is in construction and service processes, the joint of the duct pieces is often opened or staggered, the structural integrity is affected, and water leakage and even structural damage are caused. If the utility model discloses a shield tunnel lining ring with 2013.04.24 grant bulletin date and CN202900286U grant bulletin number, six Z-shaped duct pieces, an adjacent duct piece and a capping piece which are mutually matched and connected are combined, the number of the duct pieces is large, the duct pieces are assembled for many times, the annular seams are more, and the water resistance is not easy to guarantee; the utility model discloses a public a cut straightly formula section of jurisdiction suitable for shield structure machine that is 2020.06.12, the utility model patent that the bulletin number is CN 210738568U on the bulletin date of authorizing, including No. K section of jurisdiction of dysmorphism section of jurisdiction, No. B section of jurisdiction in right side, No. B section of jurisdiction in left side and No. A section of jurisdiction of a plurality of, need multiple mould during section of jurisdiction production, the cost is higher, and the circumferential weld is more, waterproof difficult assurance. Therefore, the seam of the tunnel segment becomes a key node of the structure bearing capacity and the waterproof performance, and the prior art needs to be improved.

In order to promote the bearing capacity of seam crossing, the utility model discloses a shield constructs section of jurisdiction reinforced structure is 2020.08.21, the utility model discloses that the current grant bulletin date is CN 211314236U, and the both sides of section of jurisdiction body are provided with first connection piece and second connection piece, and the surface of first connection piece is provided with the grafting post, and the grafting post adopts the same material integrated into one piece with first connection piece, and the surface of second connection piece is provided with the joint groove. The section of jurisdiction body both sides are protected through first connection piece and second connection piece, and the inserted column adopts stainless steel, has avoided the damage that causes of colliding with. Although the technical scheme of this patent has improved bearing capacity, its sealed first sealing washer and the second sealing washer that sets up through the upper end of section of jurisdiction body and upper end a week, the concatenation back between the section of jurisdiction body, through the realization of first sealing washer and second sealing washer sealed, its sealing performance remains to be improved.

Disclosure of Invention

Aiming at the defects in the background art, the utility model provides a duct piece for a tunnel, which solves the technical problems of low assembling efficiency, poor waterproof performance and high installation cost of the existing tunnel duct piece.

The technical scheme of the application is realized as follows: a duct piece for a tunnel comprises a plurality of sections of pipe segments which are matched in a splicing mode, and the duct segments are spliced to form a ring. The circumferential joint of adjacent pipe segments is provided with a concave-convex matched positioning structure, and the adjacent pipe segments are spliced in a positioning mode through the positioning structure. The radial direction of the positioning structure is provided with a first sealing structure, a second sealing structure, a third sealing structure and a fourth sealing structure, so that a four-way waterproof structure of the tunnel structure is formed. First seal structure includes the waterproof sticky tape that is close to the hole wall, constitutes tunnel structure's first waterproof construction, and second seal structure includes water swelling sealing rod, constitutes tunnel structure's second way waterproof construction, and third seal structure includes waterproof sealing pad, forms tunnel structure's third way waterproof construction, and fourth seal structure includes the inboard waterproof mortar of being close to the pipe section, forms tunnel's fourth way waterproof construction. The positioning structure not only plays a role of positioning structure, but also can prolong the water seepage path, and further improves the waterproof effect.

Furthermore, every ring pipe piece includes first section of jurisdiction and the second section of jurisdiction that mutually supports and assemble, and first section of jurisdiction and second section of jurisdiction link to each other and seal through the location structure that the tip set up, in pipe jacking method contact passageway, adopt two section of jurisdiction sections to constitute the construction of ring pipe piece, and not only waterproof performance is good, and the efficiency of construction is high moreover, with low costs.

Further, after the positioning structures are matched, a clearance fit section is arranged between the end parts of the two adjacent pipe segments at the joint, the clearance fit section comprises a large clearance section and a small clearance section which are connected, and the water-swelling water stop strip is arranged in the large clearance section. When the water of hole wall passes through waterproof sticky tape entering seam, the rivers of infiltration can get into big clearance section through the little clearance section, arouse the water swelling sealing rod when realizing the pressure drop, and then realize that the developments arouse the second and say the manger plate structure.

Further, the clearance fit section is located between location structure and the hole wall, big clearance section is close to location structure, little clearance section is close to the hole wall, waterproof sealing pad sets up between location structure and water-swelling sealing rod. The waterproof sealing gasket can act synchronously with the water-swelling water stop strip, can stop water simultaneously, can play a role in stopping water before the water-swelling water stop strip is completely excited, and can continue to play a role in stopping water after the water-swelling water stop strip fails.

Furthermore, at the joint from the positioning structure to the inner side of the segment, the end parts of two adjacent segments are closely matched, so that a certain sealing effect can be achieved, and the connection reliability and the bearing capacity of the tunnel can be enhanced.

Further, location structure includes arc wall and location stick, the arc wall sets up the both ends that are used for the concatenation at the section of jurisdiction, and in same seam crossing, two arc walls and same location stick joint cooperation on two adjacent section of jurisdiction.

Furthermore, the profile of the section of the arc-shaped groove is semicircular or minor arc-shaped, and the peripheral surface of the positioning rod is attached to the inner wall of the arc-shaped groove.

Furthermore, the positioning structure comprises an arc groove and an arc protrusion, wherein at the same joint, the end part of one pipe segment is provided with the arc groove, and the end part of the other pipe segment is provided with the arc protrusion.

Further, the pipe segment has the same structure, one end of the pipe segment is provided with an arc groove, and the other end of the pipe segment is provided with an arc protrusion.

Further, the segment of pipe includes a segment of pipe one and a segment of pipe two, and the both ends of segment of pipe one concatenation all set up the arc recess, the both ends of segment of pipe two concatenations all set up the arc is protruding.

Further, the cross-sectional profile of the arc-shaped groove is semicircular or inferior arc-shaped, and the peripheral surface of the arc-shaped protrusion is attached to the inner wall surface of the arc-shaped groove.

The segment structure of the utility model adopts a plurality of waterproof measures, which can effectively prevent the water leakage phenomenon of the tunnel in the operation process; the structure concatenation of section of jurisdiction ring adopts location structure, easily the location of assembling of section of jurisdiction, is difficult for producing and assembles error and wrong platform, can also prolong the infiltration route, has further improved water-proof effects. Meanwhile, a self-locking effect is formed between the pipe segment and the pipe segment, and the structural strength, rigidity and stability of the pipe segment are greatly enhanced.

Drawings

In order to illustrate the embodiments of the utility model more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings may be derived from them by a person skilled in the art without inventive effort.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of embodiment 1;

FIG. 3 is an enlarged view of the seal at the seam of example 1;

FIG. 4 is a schematic structural view of embodiment 2;

in the figure: 1 is the section of jurisdiction, 2 is seal structure, 21 is waterproof adhesive tape, 22 is for meeting water inflation sealing rod, 23 is waterproof sealing pad, 24 is waterproof mortar, 3 is location structure, 31 is the arc arch, 32 is the arc recess, 33 is the location stick, 34 is the arc wall, 41 is big clearance section, 42 is the little clearance section.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

Example 1, a segment for a tunnel, as shown in fig. 1, each ring segment comprises a plurality of segments 1 which are spliced and matched, and the segments 1 are spliced and then looped. Each circular pipe piece at least comprises two pipe segments 1, and in different tunnel construction schemes, the circular pipe pieces can be selected according to construction requirements, for example, each circular pipe piece can comprise a plurality of pipe segments divided according to equal angles or unequal angles, and the embodiment takes two pipe segments 1 in each circular ring as an example for introduction. The circumferential joint of the adjacent pipe segments 1 is provided with a concave-convex matched positioning structure 3, and the adjacent pipe segments 1 are positioned and spliced through the positioning structure 3.

As shown in fig. 2, the positioning structure 3 includes an arc-shaped groove 32 and an arc-shaped protrusion 31, and at the same joint, the end of one pipe segment 1 is provided with the arc-shaped groove 32, and the end of the other pipe segment 1 is provided with the arc-shaped protrusion 31. The pipe segment 1 has the same structure, one end of the pipe segment 1 is provided with an arc groove 32, and the other end is provided with an arc protrusion 31. Or the pipe section 1 comprises a first pipe section and a second pipe section, wherein the two ends of the first pipe section are both provided with the arc-shaped groove 32, and the two ends of the second pipe section are both provided with the arc-shaped protrusion 31.

Further, the cross-sectional profile of the arc-shaped groove 32 is semicircular or slightly arc-shaped, and the outer circumferential surface of the arc-shaped protrusion 31 is fitted to the inner wall surface of the arc-shaped groove 32.

As shown in fig. 3, a first sealing structure, a second sealing structure, a third sealing structure and a fourth sealing structure are arranged in the radial direction of the positioning structure 3, so as to form a four-way waterproof structure of a tunnel structure. The positioning structure 3 not only plays a role of a positioning structure, but also can prolong a water seepage path, and further improves the waterproof effect. First seal structure includes and is close to the waterproof sticky tape 21 of hole wall, constitutes tunnel structure's first waterproof construction, and second seal structure includes and meets water expansion sealing rod 22, constitutes tunnel structure's second way waterproof construction, and the third seal structure includes waterproof sealing pad 23, forms tunnel structure's third way waterproof construction, and the fourth seal structure includes and is close to 1 inboard waterproof mortar 24 of pipe section, forms tunnel's fourth way waterproof construction. The waterproof sealing gasket 23 is an ethylene propylene diene monomer sealing gasket, the waterproof mortar 24 is polymer cement waterproof mortar, and a PE film is pasted at the joint of the segment 1 before the polymer cement waterproof mortar is coated.

Specifically, when two pipe segments 1 splice, location structure 3 cooperation back is provided with the clearance fit section between the tip of two adjacent pipe segments 1 of seam crossing, and the clearance fit section is including continuous big clearance section 41 and little clearance section 42, meet water inflation sealing rod 22 and set up in big clearance section 41. When water on the wall of the hole enters the joint through the waterproof adhesive tape 21, the infiltrated water flow enters the large gap section 41 through the small gap section 42, the water swelling water stop strip 22 is excited while pressure drop is realized, and then the second water retaining structure is dynamically excited.

At the seam crossing of location structure 3 to section of jurisdiction section 1 inboard, the tip of two adjacent pipe segments 1 pastes tight fit, can play certain sealed effect, can strengthen the bearing capacity of connecting reliability and tunnel again. The clearance fit section is located between location structure 3 and the hole wall, big clearance section 41 is close to location structure 3, little clearance section 42 is close to the hole wall, waterproof sealing pad 23 sets up between location structure 3 and water-swelling sealing rod 22. The waterproof gasket 23 can synchronize with the water-swelling seal rod 22, and can stop water at the same time, or play a role in stopping water before the water-swelling seal rod 22 is completely excited, or continue to play a role in stopping water after the water-swelling seal rod 22 fails.

Example 2, a segment for a tunnel, as shown in fig. 4, is different from the example in that: location structure 3 includes arc wall 34 and positioning rod 33, arc wall 34 sets up the both ends that are used for the concatenation at pipe section 1, and at same seam crossing, two arc walls 34 on two adjacent pipe sections 1 cooperate with same positioning rod 33 joint. The profile of the cross section of the arc-shaped groove 34 is semicircular or slightly arc-shaped, and the peripheral surface of the positioning rod 33 is attached to the inner wall of the arc-shaped groove 34.

The other structure of this embodiment is the same as embodiment 1.

Embodiment 3, a segment for tunnel, in the construction of connecting channel of pipe jacking method, each ring segment comprises two pipe segments 1, and the two pipe segments 1 are connected and sealed by two positioning structures 3 at the end. In the pipe jacking method connecting channel, two pipe sections 1 are adopted to form the circular pipe sheet construction, so that the waterproof performance is good, the construction efficiency is high, and the cost is low.

The other structure of this embodiment is the same as

embodiment

1 or 2.

Nothing in this specification is intended to be exhaustive of all conventional and well known techniques.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A section of jurisdiction for tunnel, every ring of jurisdiction is including a plurality of sections concatenation complex pipe segment (1), its characterized in that: the circumference seam crossing of adjacent pipe section (1) is provided with unsmooth complex location structure (3), and the radial direction of location structure (3) is provided with first seal structure, second seal structure, third seal structure, fourth seal structure, first seal structure includes waterproof sticky tape (21) that are close to the hole wall, and the second seal structure includes water swelling sealing rod (22), and the third seal structure includes waterproof sealing pad (23), fourth seal structure is including being close to inboard waterproof mortar (24) of pipe section (1).

2. The duct piece for a tunnel according to claim 1, wherein: each ring pipe piece comprises a first pipe piece and a second pipe piece which are matched and assembled with each other, and the first pipe piece and the second pipe piece are connected and sealed through a positioning structure (3) arranged at the end part.

3. The duct piece for a tunnel according to claim 2, wherein: after location structure (3) cooperation, be provided with the clearance fit section between the tip of two adjacent pipe sections of seam department (1), the clearance fit section is including big clearance section (41) and little clearance section (42) that link to each other, meet water inflation sealing rod (22) and set up in big clearance section (41).

4. The segment for a tunnel according to claim 3, wherein: the clearance fit section is located between location structure (3) and the hole wall, big clearance section (41) are close to location structure (3), little clearance section (42) are close to the hole wall, waterproof sealing pad (23) set up between location structure (3) and meet water inflation sealing rod (22).

5. The segment for a tunnel according to any one of claims 1 to 4, wherein: at the joint between the positioning structure (3) and the inner side of the pipe segment (1), the ends of two adjacent pipe segments (1) are closely matched.

6. The duct piece for a tunnel according to claim 5, wherein: location structure (3) include arc wall (34) and location stick (33), arc wall (34) set up the both ends that are used for the concatenation in pipe section (1), and at same seam crossing, two arc walls (34) on two adjacent pipe sections (1) cooperate with same location stick (33) joint.

7. The duct piece for a tunnel according to claim 6, wherein: the profile of the section of the arc-shaped groove (34) is semicircular or minor arc-shaped, and the peripheral surface of the positioning rod (33) is attached to the inner wall of the arc-shaped groove (34).

8. The duct piece for a tunnel according to claim 5, wherein: the positioning structure (3) comprises an arc-shaped groove (32) and an arc-shaped protrusion (31), wherein at the same joint, the end part of one pipe segment (1) is provided with the arc-shaped groove (32), and the end part of the other pipe segment (1) is provided with the arc-shaped protrusion (31).

9. The duct piece for a tunnel according to claim 8, wherein: the pipe segments (1) are identical in structure, one end, spliced with the pipe segments (1), of each pipe segment is provided with an arc groove (32), and the other end of each pipe segment is provided with an arc protrusion (31).

10. The duct piece for a tunnel according to claim 8, wherein: the pipe section (1) comprises a pipe section I and a pipe section II, wherein the two ends of the pipe section I are spliced to form the arc-shaped groove (32), and the two ends of the pipe section II are spliced to form the arc-shaped protrusion (31).

11. The segment for a tunnel according to any one of claims 8 to 10, wherein: the cross section profile of the arc-shaped groove (32) is semicircular or inferior arc-shaped, and the peripheral surface of the arc-shaped bulge (31) is attached to the inner wall surface of the arc-shaped groove (32).