Tunnel segment and lining adjustable connecting structure

Abstract

The utility model discloses a tunnel segment and lining adjustable connecting structure, which relates to the technical field of tunnel segment construction, and comprises a segment and a prefabricated lining arranged on the inner side of the segment, and a plurality of threaded sleeves are pre-buried in the segment; a supporting sleeve is pre-embedded in the position, corresponding to the threaded sleeve, of the prefabricated lining, a supporting plate is rotatably installed in the supporting sleeve, an eccentric hole is formed in the supporting plate, a screw rod is installed on the threaded sleeve, the other end of the screw rod penetrates through the eccentric hole, and the end of the screw rod is fixedly installed on the outer side of the supporting plate through a connecting piece; a blocking plate is arranged at the end of the supporting sleeve. The structure can be used for reliably connecting the duct piece and the lining, and is high in error adaptability, convenient to install and construct and simple and compact in structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel segment construction technical field, concretely relates to a kind of adjustable connecting structure of tunnel segment and inner lining. BACKGROUND

[0002] Tunnel segment construction is the key link in tunnel construction, especially in the tunnel of shield method construction, in order to improve the safety, durability, fire resistance and toughness of tunnel segment structure, inner lining structure needs to be set in tunnel segment, the connecting mode of existing tunnel segment and prefabricated inner lining mainly includes bolt connection, reinforcement connection, mortise and tenon connection and grouting connection. Bolt connection is usually reserved bolt hole on tunnel segment and prefabricated inner lining respectively, and the two are fastened and connected together by bolt passing through these holes, this way is relatively simple, but two bolt holes exist construction error, actual installation is more difficult;To solve this problem, indirect bolt connection is used during construction, connecting sleeve or nut is embedded on segment first, bolt hole or connecting component corresponding thereto is set on prefabricated inner lining, and connection is realized by screwing bolt into sleeve or nut during installation, adapt to certain construction error, but this way increases the complexity of structure, and the surface of inner lining exists the protrusion of connecting structure, which is not conducive to subsequent construction. Reinforcement connection is that hole is drilled on segment first, structural adhesive is injected after cleaning, then reinforcement is implanted in hole, after structural adhesive solidifies, reliable connection is formed between reinforcement and segment, and prefabricated inner lining is fixed on segment by the connection (such as welding, binding etc.) with these implanted reinforcement, this way is low in construction efficiency, and the overall fatigue resistance of connection is poor. Mortise and tenon connection is that tenon is set on the edge of tunnel segment, groove is set on the corresponding position of prefabricated inner lining, tenon is inserted into groove during installation, and the connection of mutual engagement is formed, but the precision requirement of structure manufacturing is higher, and position is difficult to adjust during installation, and the structure is poor in bending stiffness. CONTENT OF UTILITY MODEL

[0003] The utility model aims at providing a kind of adjustable connecting structure of tunnel segment and inner lining, which can reliably connect segment and inner lining, has strong error adaptability, is convenient for installation construction, structure is simple and compact, and guarantees the bending stiffness and structural strength of overall structure after connection.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] The utility model discloses a kind of tunnel segment and lining adjustable connection structure, including segment and the prefabricated lining being arranged in segment inside, a plurality of threaded sleeves are embedded in the segment;Support sleeve is embedded on the prefabricated lining, corresponding the position of threaded sleeve, support plate is rotatably installed in support sleeve, eccentric hole is provided on the support plate, threaded rod is installed on the threaded sleeve, the other end of the threaded rod passes through the eccentric hole, and the end of threaded rod is fixedly installed outside support plate by connecting piece;Plugging plate is arranged at the end of support sleeve.

[0006] Preferably, a grouting joint is provided between the segment and the prefabricated lining.

[0007] Preferably, an inner offset platform is provided at the end of the support sleeve, and the support plate is arranged on the inner offset platform.

[0008] Preferably, the eccentric hole is a rectangular hole or a waist-shaped hole.

[0009] Preferably, a connecting boss is provided on the support plate, and the eccentric hole is arranged on the connecting boss.

[0010] Preferably, the connecting piece is a steel plate or a nut, and a through hole matched with the threaded rod is provided on the steel plate.

[0011] Preferably, a structural protrusion is provided on the outer side of the threaded sleeve and the support sleeve.

[0012] Preferably, the plugging plate is sealingly connected with the end of the support sleeve.

[0013] In the utility model, the segment and the prefabricated lining are fixedly connected through the threaded rod, the overall structure after connection has strong bending stiffness and structural strength, and the grouting joint between the segment and the prefabricated lining is connected through grouting, so that the segment and the prefabricated lining are tightly bonded together and jointly bear the pressure of the surrounding soil of the tunnel and other loads, the force transmission effect is improved, and the waterproof sealing effect is achieved to prevent groundwater and the like from infiltrating into the tunnel.

[0014] The support sleeve can adapt to the installation error and manufacturing error of the center position of the threaded sleeve, the end of the threaded rod can be fixed by rotating the support plate to make the eccentric hole correspond to the threaded sleeve, the segment and the prefabricated lining are firmly connected, the end of the support sleeve is sealingly connected by the plugging plate to avoid leakage during grouting, the structural strength of the support plate is improved by the connecting boss to further improve the bending resistance, and the connecting boss protrudes towards the segment side, so that the exposed length of the threaded rod can be locked by double nuts, the connection is convenient and stable. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1It is a whole structure schematic view of the utility model;

[0016] Figure 2 It is a local structure enlarged schematic view of the utility model A;

[0017] Figure 3 It is a support plate structure overhead schematic view of the utility model;

[0018] Figure 4 It is a connecting piece structure overhead schematic view of the utility model;

[0019] Figure 5 It is another embodiment of the utility model support plate installation screw rod state section schematic view;

[0020] In the drawing: 1, segment; 2, prefabricated lining; 3, threaded sleeve; 4, support sleeve; 5, grouting seam; 6, support plate; 7, eccentric hole; 8, inner staggered platform; 9, connecting boss; 10, structure protrusion; 11, screw rod; 12, connecting piece; 13, plugging plate. DETAILED DESCRIPTION

[0021] The utility model will be further described below in conjunction with the drawings:

[0022] As Figures 1 to 5 Indicated, a kind of tunnel segment and lining adjustable connecting structure, including segment 1 and the prefabricated lining 2 of being set in segment 1 inner side, segment 1 and prefabricated lining 2 are concrete structure.In the preset position of segment 1, multiple threaded sleeves 3 are embedded and set, the end of threaded sleeve 3 is flush with the inner wall of segment 1 or slightly lower than the inner wall of segment 1.In one preferred embodiment, structure protrusion 10 is provided on the outer side of threaded sleeve 3, the setting of structure protrusion 10 can improve the connecting strength of threaded sleeve 3 and segment 1, guarantee the stability of connection.

[0023] Support sleeve 4 is embedded and set on prefabricated lining 2, corresponding the position of threaded sleeve 3, the diameter of support sleeve 4 is not less than twice the diameter of threaded sleeve 3, can adapt to certain amount of manufacturing error, facilitate the position adjustment between segment 1 and prefabricated lining 2.Structure protrusion 10 is also provided on the outer side of support sleeve 4, the setting of structure protrusion 10 can improve the connecting strength of support sleeve 4 and prefabricated lining 2, guarantee the stability of connection.

[0024] The support plate 6 is rotatably arranged in the support sleeve 4, and the eccentric hole 7 is arranged on the support plate 6; when the support plate 6 is installed, the support plate 6 is rotated so that the eccentric hole 7 corresponds to the threaded sleeve 3. In the embodiment, the eccentric hole 7 is a rectangular hole or a waist-shaped hole. An inner stepped surface 8 is arranged at the end of the support sleeve 4, and the support plate 6 is arranged on the inner stepped surface 8. In a preferred embodiment, a connecting boss 9 is integrally arranged on the support plate 6, and the eccentric hole 7 is arranged on the connecting boss 9. A connecting groove is arranged in the support sleeve 4, and the support plate 6 is rotatably arranged in the connecting groove; of course, the connecting groove can not be arranged, the support plate 6 is rotated to align the eccentric hole 7 with the center of the threaded sleeve 3, and then the support plate 6 is welded in the support sleeve 4.

[0025] In a more preferred embodiment, two or three threaded sleeves 3 are embedded in the pipe segment 1 at corresponding positions of one support sleeve 4, and the interval between the two adjacent threaded sleeves 3 is greater than the diameter of one support sleeve 4 and less than twice the diameter of the support sleeve 4, thereby further improving the adaptability to installation errors and manufacturing errors.

[0026] The threaded sleeve 3 is screwed with a screw rod 11, and the other end of the screw rod 11 passes through the eccentric hole 7 and is located on the other side of the support plate 6. After connection, the end of the screw rod 11 is fixedly installed on the outer side of the support plate 6 through a connecting piece 12. The connecting piece 12 is a steel plate, and a through hole matched with the screw rod 11 is arranged at the center position of the steel plate. The through hole of the steel plate is sleeved on the screw rod 11, the steel plate is welded and fixed with the screw rod 11, and then the steel plate is fixed on the surface of the support plate 6 to realize fixed connection. The connecting boss 9 provides a fixed installation space for the screw rod 11, facilitates the use of nuts for fixation, and reduces welding work.

[0027] A plugging plate 13 is arranged at the end of the support sleeve 4, and the plugging plate 13 is sealingly connected with the end of the support sleeve 4 through full welding. The connection structure of the pipe segment 1 and the prefabricated lining 2 is sealed by the plugging plate 13, which facilitates subsequent grouting work.

[0028] After the pipe segment 1 and the prefabricated lining 2 are connected, a grouting joint 5 is arranged between the pipe segment 1 and the prefabricated lining 2, and the grouting joint 5 is grouted after assembly to integrate the pipe segment 1 and the prefabricated lining 2.

[0029] The above embodiments are only a number of descriptions of the concept and implementation of the present application, and are not limiting. Under the concept of the present application, technical solutions without substantial changes are still within the protection scope.

Claims

1. An adjustable connection structure between tunnel segments and lining, comprising tunnel segments and a prefabricated lining disposed inside the tunnel segments, characterized in that: Multiple threaded sleeves are pre-embedded in the tube segment; a support sleeve is pre-embedded on the prefabricated liner at the position corresponding to the threaded sleeve; a support plate is rotatably installed in the support sleeve; an eccentric hole is provided on the support plate; a screw is installed on the threaded sleeve; the other end of the screw passes through the eccentric hole; the end of the screw is fixedly installed on the outside of the support plate by a connector; a sealing plate is provided at the end of the support sleeve.

2. The adjustable connection structure between tunnel segments and lining according to claim 1, characterized in that: A grouting joint is provided between the pipe segment and the precast lining.

3. The adjustable connection structure between tunnel segments and lining according to claim 1 or 2, characterized in that: An inner misalignment is provided at the end of the support sleeve, and the support plate is disposed on the inner misalignment.

4. The adjustable connection structure between tunnel segments and lining according to claim 1, characterized in that: The eccentric hole is a rectangular hole or an oblong hole.

5. The adjustable connection structure between tunnel segments and lining according to claim 1, characterized in that: A connecting boss is provided on the support plate, and the eccentric hole is provided on the connecting boss.

6. The adjustable connection structure between tunnel segments and lining according to claim 5, characterized in that: The connector is a steel plate or a nut, and the steel plate has a through hole that matches the screw.

7. The adjustable connection structure between tunnel segments and lining according to claim 1 or 5, characterized in that: Structural protrusions are provided on the outer sides of both the threaded sleeve and the support sleeve.

8. The adjustable connection structure between tunnel segments and lining according to claim 5, characterized in that: The sealing plate is sealed to the end of the support sleeve.

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