Prestress supporting steel ring for reinforcing shield tunnel

Abstract

The utility model relates to the technical field of shield tunnels, in particular to a prestress supporting steel ring for reinforcing a shield tunnel, which comprises assembling ring pieces, a supporting block and a butt-joint sleeve, the assembling ring pieces are sleeved at two ends of the butt-joint sleeve, a hanging plate is welded at the bottom of the butt-joint sleeve, a horizontal connecting plate is welded at the bottom of the hanging plate, and the horizontal connecting plate is connected with the supporting block. Triangular connecting blocks are mounted at the two ends of the bottom of the horizontal connecting plate through bolts; a sliding hole is formed in one side of the triangular connecting block, a sleeving threaded block is connected to the inner side of the assembling ring piece through a fixing block, a pull rod is arranged in the sleeving threaded block in a sleeving mode, and the other end of the pull rod penetrates through the sliding hole in the triangular connecting block and is screwed, tensioned and fixed through a locking nut; according to the prestressed supporting steel ring for reinforcing the shield tunnel, through the two sets of prefabricated assembling ring pieces and the tensioning devices, rapid splicing can be conveniently achieved, the installation time is shortened, the working efficiency is improved, and sinking of surrounding rock in the tunnel is resisted to the maximum extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shield tunnel technical field, concretely relates to a kind of prestressed support steel rings for shield tunnel reinforcement. BACKGROUND

[0002] Tunnel reinforcement prestressed support steel ring, as its name implies, is a kind of device reinforced by prestressed steel ring to tunnel structure. It uses the rigidity of steel ring and prestressed effect to support and reinforce tunnel segment or lining, so as to improve the overall carrying capacity and stability of tunnel. This technology is widely used in the reinforcement and maintenance engineering of subway, highway, railway and other tunnels.

[0003] The existing prestressed support steel ring for shield tunnel reinforcement is not convenient for rapid assembly, and the installation time is long, the work efficiency is low, and the subsidence of surrounding rock in tunnel cannot be resisted to the maximum extent. UTILITY MODEL CONTENT

[0004] In view of the problems in the prior art, the utility model provides a prestressed support steel ring for shield tunnel reinforcement, which is convenient for rapid assembly, shortens the installation time, improves the work efficiency, and maximally resists the subsidence of surrounding rock in tunnel by two groups of prefabricated assembly ring pieces and tensioning devices.

[0005] The utility model solves the technical problems by adopting the technical scheme of a prestressed support steel ring for shield tunnel reinforcement, which comprises assembly ring pieces, supporting blocks and butt joint sleeves, both ends of the butt joint sleeve are sleeved with assembly ring pieces, the bottom of the butt joint sleeve is welded with a hanging plate, and the bottom of the hanging plate is welded with a horizontal connecting plate, and both ends of the bottom of the horizontal connecting plate are provided with triangular connecting blocks through bolts.

[0006] A sliding hole is formed in one side of the triangular connecting block, a sleeve threaded block is connected to the inner side of the assembly ring piece through a fixing block, a pull rod is sleeved in the sleeve threaded block, and the other end of the pull rod penetrates the sliding hole in the triangular connecting block and is screwed and fixed by a locking nut.

[0007] By adopting the above technical scheme, the prestressed support steel ring for shield tunnel reinforcement is convenient for rapid assembly, shortens the installation time, improves the work efficiency, and maximally resists the subsidence of surrounding rock in tunnel by two groups of prefabricated assembly ring pieces and tensioning devices.

[0008] Specifically, locking bolts are installed at both ends of the bottom of the butt joint sleeve through screw holes, and the assembly ring piece is provided with butt joint screw holes corresponding to the locking bolts at the top end.

[0009] By adopting the technical scheme, the locking bolt is screwed into the butt joint screw hole of the assembly ring piece, and two groups of assembly ring pieces are fixed by sleeving.

[0010] Specifically, the bottom of the assembly ring piece is provided with a support block through a bottom connecting plate and a bolt.

[0011] Specifically, the two ends of the pull rod are provided with external threads.

[0012] By adopting the technical scheme, the external thread is used to screw the one end of the pull rod into the sleeving threaded block, and the other end of the pull rod is fixed by screwing a locking nut.

[0013] Specifically, the assembly ring piece and the butt joint sleeve are made of stainless steel material.

[0014] The utility model discloses the beneficial effect:

[0015] (1) a kind of pre-stressed support steel ring for reinforcing shield tunnel of the utility model, two groups of assembly ring pieces are mutually butt jointed by butt joint sleeve, locking bolt is screwed into the butt joint screw hole of the assembly ring piece, one end of pull rod is screwed into the sleeving threaded block on one side fixed block, the other end of pull rod is fixed by screwing locking nut through sliding hole, using the tensioning effect of two groups of pull rod, pre-stress is applied to the support steel ring after assembly, maximum degree of resistance tunnel inner wall rock subsidence.

[0016] (2) a kind of pre-stressed support steel ring for reinforcing shield tunnel of the utility model, using support block to the effect of stable support of assembly ring piece, by two groups of prefabricated assembly ring piece and tensioning device, it is convenient to realize quick assembly, shorten the time of installation, improve work efficiency. DRAWINGS

[0017] The utility model is further described below in connection with drawings and examples.

[0018] Figure 1 It is whole structure schematic diagram of the utility model;

[0019] Figure 2 It is explosion drawing of the utility model;

[0020] Figure 3 It is A place structure schematic diagram of the utility model Figure 2 ;

[0021] Figure 4 It is external thread structure schematic diagram of the utility model.

[0022] In the figure: 1, the assembled ring piece; 2, the butt joint sleeve; 3, the external thread; 4, the locking bolt; 5, the hanging plate; 6, the horizontal connecting plate; 7, the bottom connecting plate; 8, the supporting block; 9, the pull rod; 10, the triangular connecting block; 11, the sleeve joint threaded block; 12, the fixed block; 13, the butt joint threaded hole; 14, the sliding hole; 15, the locking nut. DETAILED DESCRIPTION

[0023] 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.

[0024] In order to be used for the prestressed support steel ring of the shield tunnel reinforcement, through two groups of prefabricated assembled ring pieces 1 and tensioning devices, it is convenient to realize quick assembly, shorten the installation time, improve the working efficiency, and resist the subsidence of the surrounding rock in the tunnel to the maximum extent. Figures 1-4 As shown in the utility model, a prestressed support steel ring for shield tunnel reinforcement, comprising assembled ring pieces 1, supporting blocks 8 and butt joint sleeves 2, both ends of the butt joint sleeve 2 are sleeved with assembled ring pieces 1, the bottom of the butt joint sleeve 2 is welded with a hanging plate 5, and the bottom of the hanging plate 5 is welded with a horizontal connecting plate 6, both ends of the bottom of the horizontal connecting plate 6 are installed with triangular connecting blocks 10 through bolts.

[0025] One side of the triangular connecting block 10 is provided with a sliding hole 14, the inner side of the assembled ring piece 1 is connected with a sleeve joint threaded block 11 through a fixed block 12, the sleeve joint threaded block 11 is sleeved with a pull rod 9, the other end of the pull rod 9 penetrates through the sliding hole 14 on the triangular connecting block 10 and is tightly fixed by rotating the locking nut 15.

[0026] In use, the prestressed support steel ring for shield tunnel reinforcement, through two groups of prefabricated assembled ring pieces 1 and tensioning devices, is convenient to realize quick assembly, shorten the installation time, improve the working efficiency, and resist the subsidence of the surrounding rock in the tunnel to the maximum extent.

[0027] As shown in the utility model, Figure 1 , 3 The utility model also includes that the bottom of the butt joint sleeve 2 is installed with locking bolts 4 through screw holes, and the top end of the assembled ring piece 1 is provided with butt joint threaded holes 13 corresponding to the locking bolts 4.

[0028] In use, the locking bolts 4 are screwed into the butt joint threaded holes 13 of the assembled ring pieces 1, and two groups of assembled ring pieces 1 are fixed by sleeve jointing.

[0029] As shown in the utility model, Figure 1 The utility model also includes that the bottom of the assembled ring piece 1 is installed with supporting blocks 8 through bottom connecting plates 7 and bolts.

[0030] In use, the bottom connecting plate 7 and the bolt are used to fix the assembled ring piece 1 on the supporting block 8, so that the stable supporting effect is achieved.

[0031] As shown in the drawings, Figure 4 The utility model also includes that the both ends of the pull rod 9 are provided with external threads 3.

[0032] In use, the external threads 3 are used to screw one end of the pull rod 9 into the sleeving threaded block 11, and the other end of the pull rod 9 is fixed by screwing the locking nut 15.

[0033] As shown in the drawings, Figure 1 The utility model also includes that the assembled ring piece 1 and the butt joint sleeve 2 are made of stainless steel material.

[0034] In use, the stainless steel material is corrosion resistant, not easy to rust, high in strength, and remarkable in anti-deformation effect.

[0035] In use, the two groups of assembled ring pieces 1 are mutually butted by the butt joint sleeve 2, the locking bolt 4 is screwed, the locking bolt 4 is screwed into the butt joint screw hole 13 of the assembled ring piece 1, one end of the pull rod 9 is screwed into the sleeving threaded block 11 on the one side fixing block 12, the other end of the pull rod 9 is fixed by screwing the locking nut 15 through the sliding hole 14, the pre-stress is applied to the assembled supporting steel ring by the tensioning effect of the two groups of pull rods 9, and the sinking of the surrounding rock in the tunnel is resisted to the maximum extent;

[0036] The supporting block 8 is used to achieve the stable supporting effect on the assembled ring piece 1, and the two groups of prefabricated assembled ring pieces 1 and the tensioning device are used to realize the rapid assembly, shorten the installation time, and improve the work efficiency.

[0037] The basic principle, main features and advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pre-stressed support steel ring for shield tunnel reinforcement, characterized in that, Including assembly ring piece (1), support block (8) and butt joint sleeve (2), both ends of butt joint sleeve (2) are sleeved with assembly ring piece (1), the bottom of butt joint sleeve (2) is welded with hanging plate (5) and the bottom of hanging plate (5) is welded with horizontal connecting plate (6), the bottom of horizontal connecting plate (6) is installed with triangular connecting block (10) through bolt at both ends, One side of triangular connecting block (10) is provided with sliding hole (14), the inside of assembly ring piece (1) is connected with sleeve thread block (11) through fixed block (12), sleeve thread block (11) is sleeved with pull rod (9), the other end of pull rod (9) penetrates sliding hole (14) on triangular connecting block (10) and is fixed by locking nut (15) screwing.

2. The pre-stressed support steel ring for reinforcing a shield tunnel according to claim 1, characterized in that, The bottom of butt joint sleeve (2) is installed with locking bolt (4) through screw hole at both ends, the bottom of assembly ring piece (1) top is provided with butt joint screw hole (13) corresponding with locking bolt (4).

3. The pre-stressed support steel ring for reinforcing a shield tunnel according to claim 1, characterized in that, The bottom of assembly ring piece (1) is installed with support block (8) through bottom connecting plate (7) and bolt.

4. The pre-stressed support steel ring for reinforcing a shield tunnel according to claim 1, characterized in that, Both ends of pull rod (9) are provided with external thread (3).

5. The pre-stressed support steel ring for reinforcing a shield tunnel according to claim 1, characterized in that, Assembly ring piece (1) and butt joint sleeve (2) are made of stainless steel material.

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