Shield tunnel reinforcing structure

Abstract

The utility model discloses a shield tunnel reinforcing structure, relates to the field of tunnel reinforcing structures, and aims to solve the problems that in the prior art, tunnel segments are prone to cracking, leakage and the like due to factors such as long service cycle, severe environment influence and the like, so that structural performance is degraded, and tunnel safety is threatened. Rectangular-section arc-shaped open grooves are formed in the front end and the rear end of the middle of the inner side end face of the tunnel segment structure body correspondingly, a plurality of bolt holes are formed in the middle of the end face in each rectangular-section arc-shaped open groove at equal intervals, and a high-strength chemical bolt is fixed in each bolt hole. An arc-shaped reinforcing steel plate is connected to the position, between the two arc-shaped open grooves with the rectangular sections, of the end face of the inner side of the tunnel segment structure body, a filling layer is arranged between the upper end face of the arc-shaped reinforcing steel plate and the end face of the interior of the tunnel segment structure body, and the front end and the rear end of the arc-shaped reinforcing steel plate are fixedly connected with arc-shaped flange plates with the L-shaped sections. The two arc-shaped flange plates with the L-shaped sections are inserted into the two arc-shaped open grooves with the rectangular sections correspondingly.

Description

Technical Field

[0001] The utility model relates to the field of tunnel reinforcement structures, in particular to a shield tunnel reinforcement structure. Background Art

[0002] Tunnels are engineering structures buried in the ground, and are a form of human use of underground space. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, and military tunnels. The shield method is a fully mechanized construction method in the dark excavation method. It pushes the shield machine into the ground, supports the surrounding rock with the shield shell and segments to prevent collapse into the tunnel, and excavates the soil in front of the excavation face with a cutting device, transports it out of the cave with an excavation machine, and pressurizes it at the rear with a jack, and assembles prefabricated concrete segments to form a mechanized construction method for the tunnel structure.

[0003] Tunnel segments are prone to cracks, leakage and other problems due to long service life and harsh environment, which leads to degradation of structural performance and threatens tunnel safety. Therefore, the market urgently needs to develop a shield tunnel reinforcement structure to help people solve existing problems. Utility Model Content

[0004] The purpose of the utility model is to provide a shield tunnel reinforcement structure to solve the problem mentioned in the above background technology that tunnel segments are prone to cracks, leakage and other problems due to long service life and harsh environmental influences, which leads to the degradation of structural performance and threatens tunnel safety.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shield tunnel reinforcement structure, including a tunnel segment structure main body, a crack position indication is provided in the middle of one end face of the tunnel segment structure main body, rectangular cross-section arc grooves are arranged at both ends of the middle of the inner end face of the tunnel segment structure main body, a plurality of bolt holes are arranged at equal intervals in the middle of the end face inside the rectangular cross-section arc groove, a high-strength chemical bolt is fixed in each bolt hole, an arc-shaped reinforcement steel plate is connected to the inner end face of the tunnel segment structure main body and between two rectangular cross-section arc grooves, a filling layer is arranged between the upper end face of the arc-shaped reinforcement steel plate and the inner end face of the tunnel segment structure main body, an L-shaped arc flange plate is fixedly connected to the front and rear ends of the arc-shaped reinforcement steel plate, two L-shaped arc flange plates are respectively inserted into two rectangular cross-section arc grooves, and arc pressure plates are fixedly connected to the outer sides of the L-shaped arc flange plates.

[0006] Preferably, a plurality of injection holes are reserved at equal intervals on the arc-shaped reinforcement steel plate, and the filling layer is made of anti-cracking mortar and a waterproofing agent is added.

[0007] Preferably, a plurality of first fixing holes are evenly spaced in the middle of the L-shaped arc-shaped flange plate, and one end of the high-strength chemical bolt extends into the interior of the rectangular arc-shaped slot and passes through the first fixing hole on the L-shaped arc-shaped flange plate and is threadedly connected to a first nut.

[0008] Preferably, a first anti-loosening gasket is provided between the first nut and the inner end surface of the L-shaped arc-shaped flange plate.

[0009] Preferably, the lower end of the high-strength chemical bolt passes through the first nut and is fixedly connected with an extension screw.

[0010] Preferably, a plurality of second fixing holes are evenly spaced in the middle of the arc-shaped pressure plate, the extended screw is threadedly connected with a second nut after passing through the second fixing hole, and a second loosening gasket is arranged between the second nut and the inner end surface of the arc-shaped pressure plate.

[0011] Preferably, a first arc-shaped waterproof pad is arranged between the front end of the upper end of the arc-shaped pressure plate and the inner end surface of the tunnel segment structure body, and a second arc-shaped waterproof pad is arranged between the rear end of the upper end of the arc-shaped pressure plate and the inner end surface of the L-shaped arc-shaped flange plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, by setting up an arc-shaped reinforcing steel plate, an arc-shaped reinforcing steel plate is connected to the inner end face of the main body of the tunnel segment structure and between two rectangular-section arc-shaped grooves, a filling layer is arranged between the upper end face of the arc-shaped reinforcing steel plate and the inner end face of the main body 1 of the tunnel segment structure, a plurality of injection holes are reserved at equal intervals on the arc-shaped reinforcing steel plate, the filling layer adopts anti-crack mortar and is added with waterproofing agent, the crack position inside the main body of the tunnel segment structure is supported by the arc-shaped reinforcing steel plate, and the overall strength is increased and the waterproofing is improved by the filling layer.

[0014] 2. In the utility model, through the arrangement of the L-section arc flange plate, the front and rear ends of the arc-shaped reinforcement steel plate are fixedly connected with the L-section arc flange plate, the two L-section arc flange plates are respectively inserted into the two rectangular-section arc grooves, and a plurality of first fixing holes are evenly spaced in the middle of the L-section arc flange plate. One end of the high-strength chemical bolt extends to the inside of the rectangular-section arc groove and passes through the first fixing hole on the L-section arc flange plate and is threadedly connected with the first nut. The two L-section arc flange plates are fixed by the high-strength chemical bolt and then the arc-shaped reinforcement steel plate is fixed.

[0015] 3. In the utility model, through the arrangement of the first arc-shaped waterproof pad and the second arc-shaped waterproof pad, the first arc-shaped waterproof pad is arranged between the front end of the upper end of the arc-shaped pressure plate and the inner end face of the tunnel segment structure body, and the second arc-shaped waterproof pad is arranged between the rear end of the upper end of the arc-shaped pressure plate and the inner end face of the L-shaped arc-shaped flange plate. The first arc-shaped waterproof pad and the second arc-shaped waterproof pad are used to seal the arc-shaped pressure plate and the L-shaped arc-shaped flange plate to prevent water vapor from entering and corroding the internal structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a shield tunnel reinforcement structure of the utility model;

[0017] Figure 2 It is a top view of the utility model;

[0018] Figure 3 It is a side sectional view of the utility model;

[0019] Figure 4 This is a main cross-sectional view of the arc-shaped pressing plate of the utility model;

[0020] Figure 5 It is an enlarged view of the detail A of the utility model;

[0021] Figure 6 It is an enlarged view of detail B of the present utility model.

[0022] In the figure: 1. Tunnel segment structure body; 101. Rectangular section arc-shaped slot; 102. Bolt hole; 103. Schematic diagram of crack position; 2. Arc-shaped reinforcement steel plate; 201. L-shaped section arc-shaped flange plate; 202. First fixing hole; 203. Filling layer; 3. High-strength chemical bolt; 301. First nut; 302. First anti-loosening gasket; 303. Extension screw; 304. Second nut; 305. Second loosening gasket; 4. Arc-shaped pressure plate; 401. Second fixing hole; 402. First arc-shaped waterproof pad; 403. Second arc-shaped waterproof pad. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figure 1-6The utility model provides an embodiment: a shield tunnel reinforcement structure, including a tunnel segment structure body 1, a crack position diagram 103 is provided in the middle of one side end face of the tunnel segment structure body 1, a rectangular cross-section arc groove 101 is provided at both ends of the middle of the inner end face of the tunnel segment structure body 1, a plurality of bolt holes 102 are provided at equal intervals in the middle of the end face inside the rectangular cross-section arc groove 101, and a high-strength chemical bolt 3 is fixed in each bolt hole 102, and the tunnel segment structure An arc-shaped reinforcing steel plate 2 is connected to the inner end surface of the main body 1 and between the two rectangular-section arc-shaped grooves 101. A filling layer 203 is arranged between the upper end surface of the arc-shaped reinforcing steel plate 2 and the inner end surface of the main body 1 of the tunnel segment structure. L-shaped arc-shaped flange plates 201 are fixedly connected to the front and rear ends of the arc-shaped reinforcing steel plate 2. The two L-shaped arc-shaped flange plates 201 are respectively inserted into the two rectangular-section arc-shaped grooves 101, and arc-shaped pressure plates 4 are fixedly connected to the outer sides of the L-shaped arc-shaped flange plates 201.

[0025] Furthermore, a plurality of injection holes are reserved at equal intervals on the arc-shaped reinforcement steel plate 2, and the filling layer 203 uses anti-crack mortar and adds waterproofing agent. The arc-shaped reinforcement steel plate 2 is used to support the internal crack position of the tunnel segment structure body 1, and the filling layer 203 is used to increase the overall strength and improve the waterproofness.

[0026] Furthermore, a plurality of first fixing holes 202 are evenly spaced in the middle of the L-shaped arc-shaped flange plate 201, one end of the high-strength chemical bolt 3 extends into the interior of the rectangular arc-shaped slot 101 and passes through the first fixing hole 202 on the L-shaped arc-shaped flange plate 201 and is threadedly connected with a first nut 301, and the two L-shaped arc-shaped flange plates 201 are fixed by the high-strength chemical bolt 3, and then the arc-shaped reinforcement steel plate 2 is fixed.

[0027] Furthermore, a first anti-loosening gasket 302 is provided between the first nut 301 and the inner end surface of the L-shaped cross-section arc-shaped flange plate 201 to prevent the first nut 301 from loosening.

[0028] Furthermore, the lower end of the high-strength chemical bolt 3 passes through the first nut 301 and is fixedly connected with an extended screw rod 303 .

[0029] Furthermore, a plurality of second fixing holes 401 are arranged at equal intervals in the middle of the arc-shaped pressure plate 4, and the extended screw rod 303 is threadedly connected with a second nut 304 after passing through the second fixing hole 401, and a second loosening gasket 305 is arranged between the second nut 304 and the inner end face of the arc-shaped pressure plate 4, and the arc-shaped pressure plate 4 is fixed to the outer side of the L-shaped arc-shaped flange plate 201 through the second nut 304, so as to limit the L-shaped arc-shaped flange plate 201.

[0030] Furthermore, a first arc-shaped waterproof pad 402 is arranged between the front end of the upper end of the arc-shaped pressure plate 4 and the inner end face of the tunnel segment structure main body 1, and a second arc-shaped waterproof pad 403 is arranged between the rear end of the upper end of the arc-shaped pressure plate 4 and the inner end face of the L-shaped arc-shaped flange plate 201. The first arc-shaped waterproof pad 402 and the second arc-shaped waterproof pad 403 are used to seal the arc-shaped pressure plate 4 and the L-shaped arc-shaped flange plate 201 to prevent water vapor from entering and corroding the internal structure.

[0031] Working principle: When in use, rectangular cross-section arc grooves 101 are set at both ends of the middle of the inner end face of the main body 1 of the tunnel segment structure, and the arc-shaped reinforcement steel plate 2 is placed on the inner end face of the main body 1 of the tunnel segment structure and between the two rectangular cross-section arc grooves 101, so that the two L-shaped cross-section arc flange plates 201 of the arc-shaped reinforcement steel plate 2 are respectively inserted into the two rectangular cross-section arc grooves 101, and a plurality of first fixing holes 202 are evenly spaced in the middle of the L-shaped cross-section arc flange plate 201. One end of the high-strength chemical bolt 3 extends to the rectangular cross-section arc flange plate 201. The first nut 301 is threadedly connected to the inside of the arc-shaped slot 101 of the L-shaped section and passes through the first fixing hole 202 on the arc-shaped flange plate 201 of the L-shaped section. The two L-shaped arc-shaped flange plates 201 are fixed by high-strength chemical bolts 3, and then the arc-shaped reinforcement steel plate 2 is fixed. A plurality of injection holes are reserved at equal intervals on the arc-shaped reinforcement steel plate 2. The filling layer 203 adopts anti-crack mortar and adds waterproofing agent. The crack position inside the main body 1 of the tunnel segment structure is supported by the arc-shaped reinforcement steel plate 2, and the overall In order to improve the strength and waterproofness, an arc-shaped pressing plate 4 is placed outside the two L-shaped arc-shaped flange plates 201. The lower end of the high-strength chemical bolt 3 passes through the first nut 301 and is fixedly connected with an extended screw 303. A plurality of second fixing holes 401 are arranged at equal intervals in the middle of the arc-shaped pressing plate 4. The extended screw 303 passes through the second fixing hole 401 and is threadedly connected with a second nut 304. A second loosening gasket 305 is arranged between the second nut 304 and the inner end surface of the arc-shaped pressing plate 4. The arc-shaped pressing plate 4 is fixed to the L-shaped section through the second nut 304. On the outside of the curved flange plate 201, the L-section curved flange plate 201 is limited, a first curved waterproof pad 402 is arranged between the front end of the upper end of the curved pressure plate 4 and the inner end face of the tunnel segment structure main body 1, and a second curved waterproof pad 403 is arranged between the rear end of the upper end of the curved pressure plate 4 and the inner end face of the L-section curved flange plate 201. The first curved waterproof pad 402 and the second curved waterproof pad 403 are used to seal the curved pressure plate 4 and the L-section curved flange plate 201 to prevent water vapor from entering and corroding the internal structure.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A shield tunnel reinforcement structure, comprising a tunnel segment structure body (1), characterized in that: A crack position diagram (103) is provided in the middle of one end face of the tunnel segment structure main body (1), and rectangular cross-section arcuate grooves (101) are provided at both ends of the middle of the inner end face of the tunnel segment structure main body (1), and multiple bolt holes (102) are provided at equal intervals in the middle of the end face inside the rectangular cross-section arcuate groove (101), and a high-strength chemical bolt (3) is fixed in each of the bolt holes (102). The inner end face of the tunnel segment structure main body (1) is provided with a plurality of bolt holes (102) at two rectangular cross-section arcuate grooves ( 101), a curved reinforcing steel plate (2) is connected between the upper end surface of the curved reinforcing steel plate (2) and the inner end surface of the tunnel segment structure main body (1), a filling layer (203) is arranged between the upper end surface of the curved reinforcing steel plate (2) and the inner end surface of the tunnel segment structure main body (1), the front and rear ends of the curved reinforcing steel plate (2) are fixedly connected with L-shaped cross-section curved flange plates (201), the two L-shaped cross-section curved flange plates (201) are respectively inserted into the inside of two rectangular cross-section curved slots (101), and the outer sides of the L-shaped cross-section curved flange plates (201) are fixedly connected with curved pressure plates (4).

2. A shield tunnel reinforcement structure according to claim 1, characterized in that: A plurality of injection holes are reserved at equal intervals on the arc-shaped reinforcement steel plate (2), and the filling layer (203) is made of anti-cracking mortar and is added with a waterproofing agent.

3. A shield tunnel reinforcement structure according to claim 1, characterized in that: A plurality of first fixing holes (202) are arranged at equal intervals in the middle of the L-shaped arc-shaped flange plate (201); one end of the high-strength chemical bolt (3) extends into the interior of the rectangular arc-shaped slot (101) and passes through the first fixing hole (202) on the L-shaped arc-shaped flange plate (201) and is threadedly connected to a first nut (301).

4. A shield tunnel reinforcement structure according to claim 3, characterized in that: A first anti-loosening gasket (302) is provided between the first nut (301) and the inner end surface of the L-shaped cross-section arc-shaped flange plate (201).

5. A shield tunnel reinforcement structure according to claim 4, characterized in that: The lower end of the high-strength chemical bolt (3) passes through the first nut (301) and is fixedly connected to an extended screw rod (303).

6. A shield tunnel reinforcement structure according to claim 5, characterized in that: A plurality of second fixing holes (401) are arranged at equal intervals in the middle of the arc-shaped pressing plate (4); the extended screw rod (303) passes through the second fixing hole (401) and is threadedly connected to a second nut (304); and a second loosening gasket (305) is arranged between the second nut (304) and the inner end surface of the arc-shaped pressing plate (4).

7. The shield tunnel reinforcement structure according to claim 1, characterized in that: A first arc-shaped waterproof pad (402) is arranged between the front end of the upper end of the arc-shaped pressure plate (4) and the inner end surface of the tunnel segment structure body (1), and a second arc-shaped waterproof pad (403) is arranged between the rear end of the upper end of the arc-shaped pressure plate (4) and the inner end surface of the L-shaped cross-section arc-shaped flange plate (201).

Images