Multi-directional prestress reinforced type shield segment

Abstract

The utility model discloses a multi -direction prestressed strengthening type shield segment, including standard block, the standard block adjacent side is installed with abutment block, the abut but block adjacent side is installed with the top -sealing block, the standard block, abutment block and top -sealing block all are provided with the anchoring tooth block inside, and all are provided with the prestressed steel bundle inside and run through, the standard block, abutment block and top -sealing block outer wall are equipped with the installation ring, the installation ring outer wall is provided with the installation limiting board, the standard block, abutment block and top -sealing block adjacent two ends all are mutually jointed, the standard block, abutment block and top -sealing block all are provided with multiple groups annular prestress hole and are provided with longitudinal prestress hole in one end, the annular prestress hole and longitudinal prestress hole size are same, the annular prestress hole and longitudinal prestress hole all are provided with the prestressed steel bundle inside, can realize the overall rigidity of tunnel structure, the deformation resistance and ultimate bearing capacity, reduce the deformation and the cracking risk of segment.

Description

TECHNICAL FIELD

[0001] The utility model relates to shield segment technology field especially is related to a multi -direction prestressed reinforcement type shield segment. BACKGROUND

[0002] Shield segment is the main assembly component of shield construction, is the innermost layer barrier of tunnel, bears the role of resisting soil pressure, underground water pressure and some special load, shield segment is the permanent lining structure of shield 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] The existing shield segment has some deficiencies when installing, and the prestress of the shield segment is not strong when installing, which can easily reduce the overall rigidity and bearing capacity of the tunnel structure, thereby causing the risk of segment deformation or cracking, and reducing the strength and service life of the shield segment, and the above problems are improved and upgraded by the multi -direction prestressed reinforcement type shield segment. UTILITY MODEL CONTENT

[0004] The utility model discloses a multi -direction prestressed reinforcement type shield segment to solve the problem in the background art.

[0005] To solve the above problems, the following technical scheme is provided:

[0006] A multi -direction prestressed reinforcement type shield segment is designed, which comprises a standard block, an adjacent block is installed on one side of the standard block, a top sealing block is installed on one side of the adjacent block, anchor tooth blocks are arranged in the standard block, the adjacent block and the top sealing block, and prestressed steel bundles are arranged in the standard block, the adjacent block and the top sealing block, an installation ring is arranged on the outer wall of the standard block, the adjacent block and the top sealing block, installation limiting plates are arranged on the outer wall of the installation ring, and the standard block, the adjacent block and the top sealing block are mutually clamped at two ends.

[0007] Further, a plurality of circumferential prestressed hole channels are formed in the standard block, the adjacent block and the top sealing block, and a longitudinal prestressed hole channel is formed at one end of each of the circumferential prestressed hole channels, and the circumferential prestressed hole channels and the longitudinal prestressed hole channel have the same size.

[0008] Further, prestressed steel bundles are arranged in the circumferential prestressed hole channels and the longitudinal prestressed hole channel, and splicing grooves are formed on the upper and lower sides of the circumferential prestressed hole channels and the longitudinal prestressed hole channel on the outer wall of the standard block, the adjacent block and the top sealing block.

[0009] Further, a plurality of installation limiting plates are fixedly installed on the outer wall of the installation ring, and the installation limiting plates are automatically clamped on each segment.

[0010] Further, the standard block, the abutment block and the capping block are internally fixedly provided with anchor tooth blocks, and the anchor tooth blocks adopt an "upward convex and two sides concave" shape.

[0011] Further, the standard block, the abutment block and the capping block are internally fixedly provided with anchor tooth blocks, and the anchor tooth blocks adopt an "upward convex and two sides concave" shape.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1、The utility model discloses internally setting prestressed steel beam, anchor tooth block, annular prestressed hole, longitudinal prestressed hole and other components, which is favorable to greatly improving the overall rigidity, anti-deformation capacity and ultimate bearing capacity of the tunnel structure, reducing the deformation and cracking risk of the segment, greatly improving the multidirectional prestress of the tunnel structure, reducing the deformation and cracking of the segment, reducing the possibility of leakage at the joint between the segments, improving the waterproof performance of the tunnel, being favorable to the long-term stable operation of the tunnel and prolonging the service life of the shield segment.

[0014] With reference to the following description and drawings, specific embodiments of the utility model are disclosed in detail, and the principle of the utility model can be adopted. It should be understood that the embodiments of the utility model are not limited in scope. The embodiments of the utility model include many changes, modifications and equivalents within the scope of the appended claims and clauses. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0016] Figure 1 It is a schematic diagram of a multidirectional prestress reinforced shield segment overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of a multidirectional prestress reinforced shield segment local split structure of the utility model;

[0018] Figure 3 It is Figure 2 It is a local enlarged split structure schematic diagram.

[0019] In the drawings: 1, standard block; 2, abutment block; 3, capping block; 4, prestressed steel beam; 5, annular prestressed hole; 6, anchor tooth block; 7, mounting ring; 8, splicing groove; 9, clamping groove; 10, longitudinal prestressed hole; 11, anchor groove. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0021] As shown in Figure 1 - Figure 3 The utility model provides a design a multi -direction prestressed reinforcement type shield segment, including standard block 1, the adjacent side of standard block 1 is installed with adjoining block 2, the adjacent side of adjoining block 2 is installed with capping block 3, and the inside of standard block 1, adjoining block 2 and capping block 3 are all provided with anchoring tooth block 6, and are all provided with prestressed steel bundle 4 inside, and the outer wall of standard block 1, adjoining block 2 and capping block 3 is provided with installation ring 7, and the outer wall of installation ring 7 is provided with installation limiting plate, and the adjacent two ends of standard block 1, adjoining block 2 and capping block 3 are all mutually clamped.

[0022] Preferably, the inside of standard block 1, adjoining block 2 and capping block 3 is all provided with multiple groups of annular prestressed hole 5, and the longitudinal prestressed hole 10 is all provided with longitudinal prestressed hole 10 at one end, the size of annular prestressed hole 5 and longitudinal prestressed hole 10 is same, the inside of annular prestressed hole 5 and longitudinal prestressed hole 10 is provided with prestressed steel bundle 4, and the outer wall of standard block 1, adjoining block 2 and capping block 3 is provided with splicing groove 8 on the upper and lower sides of annular prestressed hole 5 and longitudinal prestressed hole 10.

[0023] Through the setting of multiple groups of annular prestressed hole 5 and longitudinal prestressed hole 10, and the inside is all penetrated by prestressed steel bundle 4, it is convenient to tension prestressed steel bundle 4 by tensioning equipment, so that the segment is subjected to multiple prestressed pressure and transmission, the hardness of the segment is improved, and the two ends of standard block 1, adjoining block 2 and capping block 3 are engaged and fixed in pairs.

[0024] Preferably, the outer wall of installation ring 7 is fixedly provided with multiple installation limiting plates, the installation limiting plates are automatically clamped on each segment, the inside of standard block 1, adjoining block 2 and capping block 3 is fixedly provided with anchoring tooth block 6, the shape of anchoring tooth block 6 adopts "upper convex and both sides concave" shape, the inside surface of standard block 1, adjoining block 2 and capping block 3 is provided with multiple anchoring grooves 11, and one end is provided with clamping groove 9 on one side of longitudinal prestressed hole 10.

[0025] Through the setting of installation ring 7 and multiple installation limiting plates, it is convenient to automatically clamp and install the segments in pairs, pre-tighten them, and the middle of anchoring tooth block 6 is convex on the upper side and concave on the both sides, which provides reliable support for the anchoring of prestressed steel bundle 4, and improves the prestressed pressure of the segment.

[0026] The use principle and use process of the utility model: first, the operator passes through one end clamping groove 9 mutual clamping splicing by making machine to standard block 1, adjoining block 2 and capping block 3 in turn, make it form a ring, install ring 7 on the outer wall of duct piece while splicing, finally through a plurality of groups of installation limiting plate to the automatic clamping of duct piece, when the fastening of each assembly of duct piece is completed, through tensioning equipment to the tensioning of prestressed steel strand 4, make duct piece receive pre-stress, simultaneously set up multiple degrees of ring direction prestressed hole 5 and longitudinal prestressed hole 10 cooperation, simultaneously duct piece is equipped with anchorage tooth block 6 or anchorage groove 11, for the end of prestressed steel strand 4, guarantee the application and transmission of prestress, under the action of more prestress, the stress distribution in the structure of duct piece is optimized, ring direction prestress can resist the ring direction pressure that tunnel receives, improve the ring direction carrying capacity of duct piece, longitudinal prestress helps to enhance the longitudinal connection between duct piece, improve the overall longitudinal stiffness of tunnel, make duct piece structure when receiving external load, can more evenly transmit force to the whole structure system, reduce local stress concentration.

[0027] In the description of the utility model, it is necessary to explain that, unless another explicit provision and limitation, the term "installation", "set with", "connection" and the like, should do broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integral connection, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be the communication of two elements inside. For ordinary skilled in the art, can understand the specific meaning of the above-mentioned term in the utility model according to specific situation.

[0028] In the description of the embodiment, the orientation or position relationship of the terms "upper", "lower", "right", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

Claims

1. A multi-directional prestressed reinforced shield tunnel segment, characterized in that, The standard block (1) is provided with an adjacent block (2) on one side of the standard block (1) and a capping block (3) on one side of the adjacent block (2). Anchoring teeth (6) are provided inside the standard block (1), the adjacent block (2) and the capping block (3), and prestressed steel strands (4) are provided through them. An installation ring (7) is provided on the outer wall of the standard block (1), the adjacent block (2) and the capping block (3). An installation limiting plate is provided on the outer wall of the installation ring (7). The two adjacent ends of the standard block (1), the adjacent block (2) and the capping block (3) are interlocked with each other.

2. The multi-directional prestressed reinforced shield tunnel segment according to claim 1, characterized in that, The standard block (1), adjacent block (2) and capping block (3) each have multiple sets of circumferential prestressed ducts (5) inside, and each has a longitudinal prestressed duct (10) at one end. The circumferential prestressed ducts (5) and the longitudinal prestressed ducts (10) have the same size.

3. A multi-directional prestressed reinforced shield tunnel segment according to claim 2, characterized in that, Both the circumferential prestressed duct (5) and the longitudinal prestressed duct (10) are equipped with prestressed steel strands (4). The outer walls of the standard block (1), adjacent block (2) and capping block (3) are provided with splicing grooves (8) on the upper and lower sides of the circumferential prestressed duct (5) and the longitudinal prestressed duct (10).

4. A multi-directional prestressed reinforced shield tunnel segment according to claim 1, characterized in that, Multiple installation limiting plates are fixedly installed on the outer wall of the installation ring (7), and the installation limiting plates are automatically snapped onto each segment.

5. A multi-directional prestressed reinforced shield tunnel segment according to claim 1, characterized in that, Anchoring teeth (6) are fixedly installed inside the standard block (1), adjacent block (2) and capping block (3). The anchoring teeth (6) are shaped as "convex on top and concave on both sides".

6. A multi-directional prestressed reinforced shield tunnel segment according to claim 5, characterized in that, The inner surfaces of the standard block (1), adjacent block (2) and capping block (3) are provided with multiple anchoring grooves (11), and one end is provided with a snap-fit ​​groove (9) on the side of the longitudinal prestressed duct (10).

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