Connecting structure of shield tunnel steel pipe piece and concrete pipe piece

Abstract

The utility model discloses a shield tunnel steel pipe piece and concrete pipe piece connecting structure, which comprises a tunnel steel pipe piece, a concrete pipe piece and a quick connecting piece, the side edge of the tunnel steel pipe piece is provided with a positioning groove, a positioning step is arranged in the positioning groove, the side edge of the concrete pipe piece is provided with an expansion sleeve, and the expansion sleeve is connected with the quick connecting piece. The quick connecting piece sequentially comprises a positioning part, a connecting part and an expansion part, the positioning part is arranged in a stepped mode and matched with the positioning step, the two ends of the connecting part are connected with the positioning part and the expansion part respectively, and the expansion part is connected with the expansion sleeve in a matched mode; traditional bolt connection is replaced by the quick connecting piece, the quick connecting piece is provided with the stepped positioning part, the positioning part is connected with the positioning step of the tunnel steel pipe piece in a matched mode, and the expansion part is connected with the expansion sleeve embedded in the concrete pipe piece in a matched mode, so that quick connection between the tunnel steel pipe piece and the concrete pipe piece is achieved. And meanwhile, higher connection precision is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction equipment field especially relates to a kind of connecting structure of shield tunnel steel pipe piece and concrete pipe piece. BACKGROUND

[0002] Tunnel segment is the main assembly component of shield construction, is the innermost layer barrier of tunnel, bears the role of resisting soil pressure, groundwater pressure and some special load.Shield segment is the permanent lining structure of shield method tunnel, and the quality of shield segment is directly related to the overall quality and safety of tunnel, influences the waterproof performance and durability of tunnel.

[0003] Such as the Chinese patent document with patent announcement No.CN114856624A, the disclosed shield tunnel composite segment includes a plurality of arc-shaped reinforced concrete segments, the reinforced concrete segments are pre-buried with steel pipe concrete components;The steel pipe concrete component is composed of arc-shaped steel pipe inner cast concrete, and the surface is provided with corrugation;A plurality of the reinforced concrete segments are connected in turn along the arc length direction, so that the steel pipe concrete component forms a pressure ring;The steel pipe concrete component is provided with a one-way plug-in connector and a pin at both ends thereof along the arc length direction;Every two steel pipe concrete components are fixed by plug-in connector and pin along the arc length direction;Every two reinforced concrete segments are fixed by bolt connection along the arc length direction;This structure forms joint splicing by adopting bolt connection to ensure the rigidity and strength of joint, but the construction speed is slow in the process of connection, and the construction process cannot be guaranteed;

[0004] Such as the Chinese patent document with patent announcement No.CN106968688B, the disclosed shield tunnel composite segment structure and shield tunnel lining, the steel pipe segment of shield tunnel composite segment structure and the steel pipe segment of shield tunnel composite segment structure and shield tunnel ordinary concrete segment are connected by steel bolt, the concrete segment of shield tunnel composite segment structure is connected by cuttable bolt, and the shield tunnel lining in the form of circular ring is formed;Cuttable bolt is male and female bolt, the male and female bolt includes male side structure and female side structure that are locked and anchored with each other;Male side structure includes screw rod, the top of the screw rod is provided with trapezoidal wedge, the female side structure is provided with insertion slot for the screw rod, the top of the insertion slot is provided with elastic lock hole for the trapezoidal wedge insertion, and the end of the elastic lock hole is provided with inclined tooth that engages with the trapezoidal wedge.Trapezoidal wedge passes through elastic lock hole and engages with each other, and when pulling in opposite direction, the inclined tooth engages trapezoidal wedge to form matched lock to prevent withdrawal;Although the connection speed is improved in the above structure, the deviation is prone to appear between segment and segment, and the connection accuracy cannot be guaranteed;

[0005] Therefore, it is necessary to develop a connecting piece which can improve the connecting speed and ensure the connecting precision to solve the existing problems. Technical Contents

[0006] The utility model discloses a kind of connecting structure of shield tunnel steel pipe piece and concrete pipe piece, to solve the problems presented in the above background art.

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of connecting structure of shield tunnel steel pipe piece and concrete pipe piece, including

[0008] Tunnel steel pipe piece, the side of the tunnel steel pipe piece is provided with positioning groove, positioning step is equipped in the positioning groove;

[0009] Concrete pipe piece, the side of the concrete pipe piece is provided with expansion sleeve;

[0010] Quick connecting piece, the quick connecting piece sequentially includes positioning portion, connecting portion and expansion portion, the positioning portion is arranged in steps, and it is compatible with the positioning step, the both ends of the connecting portion are connected with positioning portion, expansion portion, and the expansion portion is connected with the expansion sleeve.

[0011] The positioning portion includes sequentially arranged first positioning section, second positioning section and third positioning section, the diameter of the first positioning section is less than second positioning section, the diameter of second positioning section is less than third positioning section, the both ends of the second positioning section are connected with first positioning section, third positioning section, and the third positioning section is connected with connecting portion.

[0012] The first positioning section, second positioning section and third positioning section are all provided with external thread, and the inner wall of the positioning step is provided with corresponding internal thread of the first positioning section, the second positioning section and the third positioning section.

[0013] The diameter of the connecting portion decreases from middle to both ends, and forms taper surface at both ends.

[0014] Expansion step is distributed on the expansion portion.

[0015] Compared with prior art, the utility model has the beneficial effects that by replacing traditional bolt connection with quick connecting piece, wherein the quick connecting piece is provided with stepped positioning portion, the positioning portion is connected with the positioning step of tunnel steel pipe piece, and the expansion portion is connected with the expansion sleeve embedded in concrete pipe piece, to realize the quick connection between tunnel steel pipe piece and concrete pipe piece, and achieve higher connecting precision. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the connecting state schematic view of the utility model.

[0017] Fig. 2 It is a sectional view schematic diagram of the tunnel steel pipe piece in the utility model.

[0018] Fig. 3 It is a structure schematic diagram of the quick connecting piece in the utility model.

[0019] In the drawing: tunnel steel pipe piece 10, positioning groove 101, positioning step 102, concrete pipe piece 20, expansion sleeve 201, quick connecting piece 30, positioning part 31, first positioning section 311, second positioning section 312, third positioning section 313, connecting part 32, expansion part 33, expansion step 331. DETAILED DESCRIPTION

[0020] Embodiments of the present application will be described in more detail by referring to the attached drawings. While certain embodiments of the application are shown in the drawings, it is understood that the application can be embodied in various forms and should not be construed as being limited to the embodiments set forth in the drawings. Rather, these embodiments are provided so that the present application will be more thoroughly and completely understood. It will be appreciated that the drawings and the embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present application.

[0021] It should be understood that the various steps of the method embodiments of the present application can be performed in different orders and / or in parallel. In addition, the method embodiments can include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0022] The term "comprising" and variations thereof as used herein are used in an open-ended manner to mean "including, but not limited to". The term "connected" can be direct or indirect, and can mean either a direct connection, or an indirect connection via one or more intermediate parts (elements). The term "one embodiment" means "at least one embodiment". The term "another embodiment" means "at least one additional embodiment". The term "some embodiments" means "at least some embodiments". Related definitions are provided below.

[0023] It should be noted that the terms "first", "second", and the like in the description and in the claims do not necessarily mean "different", but are used to distinguish an entity from another, and are used to distinguish the functions performed by the entities, but not to limit the sequence of the functions or the interdependence of the functions.

[0024] Please refer to Figs. 1 to 3 The connecting structure of the shield tunnel steel pipe piece and the concrete pipe piece shown in the drawing comprises a tunnel steel pipe piece 10, a concrete pipe piece 20 and a quick connecting piece 30.

[0025] The side of the tunnel steel pipe piece 10 is provided with a positioning groove 101, the positioning groove 101 is provided with a positioning step 102, the side of the concrete pipe piece 20 is provided with an expansion sleeve 201, the quick connecting piece 30 sequentially comprises a positioning part 31, a connecting part 32 and an expansion part 33, the positioning part 31 is provided in a stepped manner and is matched with the positioning step 102, the connecting part 32 is connected with the positioning part 31 and the expansion part 33 at both ends respectively, and the expansion part 33 is matched and connected with the expansion sleeve 201, in particular, the quick connecting piece 30 is used to replace the traditional bolt connection, the quick connecting piece 30 is provided with the stepped positioning part 31, the positioning part 31 is matched and connected with the positioning step 102 of the tunnel steel pipe piece 10, and the expansion part 33 is matched and connected with the expansion sleeve 201 embedded in the concrete pipe piece 20, so that the quick connection between the tunnel steel pipe piece 10 and the concrete pipe piece 20 is realized, and higher connection accuracy is achieved.

[0026] Specifically, the positioning part 31 comprises a first positioning section 311, a second positioning section 312 and a third positioning section 313 arranged in sequence, the diameter of the first positioning section 311 is smaller than that of the second positioning section 312, the diameter of the second positioning section 312 is smaller than that of the third positioning section 313, the two ends of the second positioning section 312 are connected with the first positioning section 311 and the third positioning section 313 respectively, and the third positioning section 313 is connected with the connecting part 32, so that the positioning accuracy between the quick connecting piece 30 and the tunnel steel pipe piece 10 is further improved, the subsequent assembly accuracy is ensured, and the multi-section design also meets the requirement of tensile bearing capacity.

[0027] Specifically, the first positioning section 311, the second positioning section 312 and the third positioning section 313 are all provided with external threads, and the inner wall of the positioning step 102 is provided with internal threads corresponding to the first positioning section 311, the second positioning section 312 and the third positioning section 313.

[0028] Specifically, the diameter of the connecting part 32 decreases from the middle part to both ends, and a taper surface is formed at both ends, so that the overall strength of the quick connecting piece 30 is improved, and the connection strength is ensured.

[0029] Specifically, the expansion part 33 is distributed with a plurality of expansion steps 331.

[0030] In use, the positioning sections 311, 312 and 313 of the positioning part 31 are first screwed with the positioning step 102, the quick connecting piece 30 is twisted into the positioning groove 101, the quick connecting piece 30 is tightly connected with the tunnel steel pipe piece 10,

[0031] When the two are connected, the tunnel steel pipe piece 10 is installed corresponding to the concrete pipe piece 20, the expansion part 33 of the quick connecting piece 30 is inserted into the expansion sleeve 201 embedded in the concrete pipe piece 20, and the expansion sleeve 201 and the expansion part 33 are expandedly connected, that is, the connection between the tunnel steel pipe piece 10 and the concrete pipe piece 20 is completed.

[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A connection structure between steel segments and concrete segments in a shield tunnel, characterized in that: The application relates to a tunnel steel segment (10) provided with a positioning groove (101) at the side edge, wherein a positioning step (102) is arranged in the positioning groove (101); a concrete segment (20) provided with an expansion sleeve (201) at the side edge; and a quick connecting piece (30) sequentially comprising a positioning part (31), a connecting part (32) and an expansion part (33), wherein the positioning part (31) is arranged in a stepped mode and is matched with the positioning step (102), the connecting part (32) is connected with the positioning part (31) and the expansion part (33) at two ends respectively, and the expansion part (33) is matched and connected with the expansion sleeve (201). The positioning part (31) comprises a first positioning section (311), a second positioning section (312) and a third positioning section (313) arranged in sequence, the diameter of the first positioning section (311) is smaller than that of the second positioning section (312), the diameter of the second positioning section (312) is smaller than that of the third positioning section (313), the two ends of the second positioning section (312) are connected with the first positioning section (311) and the third positioning section (313) respectively, and the third positioning section (313) is connected with the connecting part (32). The first positioning section (311), the second positioning section (312) and the third positioning section (313) are all provided with external threads, and the inner wall of the positioning step (102) is provided with internal threads matched with the first positioning section (311), the second positioning section (312) and the third positioning section (313). The diameter of the connecting part (32) decreases from the middle part to the two ends, and taper surfaces are formed at the two ends.

2. The connecting structure of a shield tunnel steel segment and a concrete segment according to claim 1, characterized in that: The expansion part (33) is distributed with a plurality of expansion steps (331).

3. The connection structure of a shield tunnel steel segment and a concrete segment according to claim 2, characterized in that: ​ 4. The connecting structure of a shield tunnel steel segment and a concrete segment according to claim 1, characterized in that: ​ 5. The connecting structure of a shield tunnel steel segment and a concrete segment according to claim 1, characterized in that: ​

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