Fabricated structure for reinforcing subway shield tunnel and using method thereof
By adopting a cross -connected chain structure and pouring mechanism in the tunnel reinforcement structure, the problem of insufficient response to the stretching force of the traditional reinforcement structure has been solved, and higher structural stability and intensity are achieved.
Patent Information
- Application Number
- CN202411492466.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-01-24
Smart Images
Figure CN119353004A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of tunnel reinforcement, in particular to an assembled structure for reinforcing a subway shield tunnel and a use method thereof. Background Art
[0002] During the construction and operation of subway shield tunnels, lining segments are the most important bearing structures. Due to poor ground conditions, over-excavation and under-excavation during shield tunneling, grouting quality that does not meet requirements, and the impact of ground loading, the lining segments may be damaged, causing water leakage, excessive deformation, misalignment, reduced strength, or even fragmentation, which may seriously endanger driving safety. In view of the above reasons, it is necessary to reinforce and protect the damaged segments.
[0003] There is a problem with the existing tunnel reinforcement structure: the surface of the tunnel behind the shield will exert tensile and shear forces on the arch ring, and the traditional arch ring can cope with shear force but cannot resist larger tensile force because the arch ring is not annular or closed in shape, so it is less effective in coping with tensile force. Summary of the invention
[0004] The present invention provides an assembled structure for reinforcing a subway shield tunnel and a method of using the assembled structure to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an assembled structure for reinforcing a subway shield tunnel, comprising a No. 1 reinforcement mechanism, which is used to reinforce the tunnel after the shield tunneling is completed; A pouring mechanism, which is used to pour concrete on the parts with gaps after reinforcement; A second reinforcement mechanism is arranged at one end of the casting mechanism away from the first reinforcement mechanism, the bottoms of the first reinforcement mechanism and the second reinforcement mechanism are both fixedly connected with shield segments, and an I-beam is arranged on the top of the shield segment; The No. 1 reinforcement mechanism includes a support seat, which is symmetrically connected to the two ends of the shield segment, an inner rib plate is fixedly connected to the inside of the support seat, and a No. 1 ring flange is fixedly connected to the top of the support seat; A wave arch ring is fixedly connected to the inner side of the No. 1 ring edge flange, and a No. 2 ring edge flange is fixedly connected to the end of the wave arch ring away from the No. 1 ring edge flange.
[0006] Preferably, a reinforcing rib is fixedly connected to the outer side of the No. 1 ring edge flange, a casting hole is opened on the surface of the No. 1 ring edge flange, and a triangular arch ring is inserted into the surface of the wave arch ring.
[0007] Preferably, one end of the triangular arch ring is fixedly connected to the No. 1 ring edge flange, and the end of the triangular arch ring away from the No. 1 ring edge flange is fixedly connected to the inner side of the No. 2 ring edge flange. A No. 1 casting mold is provided on the side of the No. 2 ring edge flange away from the triangular arch ring, and the top of the No. 1 casting mold is extruded and adapted with a No. 2 casting mold.
[0008] Preferably, the casting mechanism comprises a bottom connecting frame, the bottom connecting frame is fixedly connected to the bottom of the second casting mold, inner grooves are symmetrically provided on both sides of the inner cavity of the bottom connecting frame, and a slide plate is slidably adapted inside the inner groove.
[0009] Preferably, a leak-proof pad is fixedly connected to the central portion of the slide plate, and a punching rod is extruded and adapted to the central portion of the leak-proof pad, wherein a friction relationship is generated between the leak-proof pad and the punching rod via a friction protrusion.
[0010] Preferably, a first limiting plate and a second limiting plate are fixedly connected to the outer sides of the punching rod, respectively, wherein the first limiting plate is located above the anti-leakage pad, and the second limiting plate is located below the anti-leakage pad.
[0011] Preferably, the top of the slide plate is fixedly connected to a support plate, the inner side of the support plate is rotatably connected to a casting head via a rotating shaft, the bottom of the casting head is extrusion-fitted with the punching rod, the bottom of the casting head is respectively fixedly connected to a return spring and an injection tube, and the return spring is fixedly connected to the top of the slide plate.
[0012] Preferably, the injection pipe is respectively inserted through the bottom of the slide plate and the bottom connection frame and extends to the outside, the bottom of the bottom connection frame is fixedly connected with three side frames, and the interior of the three side frames is slidably adapted with sliding sheets.
[0013] Preferably, a No. 1 triangle block is fixedly connected to the outer side of the sliding sheet, a No. 2 triangle block is extruded and adapted on the outer side of the No. 1 triangle block, the No. 2 triangle block is fixedly connected to the outer side of the punching rod, a magnetic pressure strip is fixedly connected to the inner side of the sliding sheet, a magnetic block is arranged on the side of the magnetic pressure strip away from the sliding sheet, and the magnetic block is fixedly connected to the inner side of the three side frames.
[0014] A method for using an assembled structure for reinforcing a subway shield tunnel comprises the following steps: Step 1: Installation, by symmetrically connecting the support base to the two ends of the shield segment through fasteners, and then fixing the No. 1 ring flange connected to the top of the support base, the tunnel behind the shield will be supported; Step 2: Preliminary preparation: the punch rod moves upward and hits the pouring head, and then the pouring head deflects through the rotating shaft and stretches the reset spring, and the pouring head enters the No. 2 pouring mold to achieve preliminary preparation for concrete pouring; Step 3: pouring process, the injection pipe connected to the pouring head is connected, so that concrete will be sprayed out from the pouring head through the pipe, so as to realize the cement pouring process of the No. 2 casting mold and the No. 1 casting mold.
[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The wave arch ring and the triangular arch ring are cross-connected. Therefore, when the wave shape of the wave arch ring is stretched under stress, the adjacent wave crests and troughs can restrain each other, which is similar to a chain structure, preventing the expansion of cracks to a certain extent.
[0016] 2. The tail of the pouring head is squeezed by the punch rod, causing the pouring head to deflect through the rotating shaft and stretch the reset spring, wherein the reset spring is initially kept in a compressed state and plays a role in resetting the pouring head, thereby playing a preliminary preparation role for concrete pouring.
[0017] 3. By spraying concrete from the pouring head, cement is poured into the No. 2 casting mold and the No. 1 casting mold, thereby filling the several centimeters gap between the No. 1 reinforcement mechanism and the No. 2 reinforcement mechanism with concrete. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The figure is a schematic diagram of the external structure of an assembled structure for reinforcing a subway shield tunnel according to the present invention.
[0019] Figure 2 It is a schematic cross-sectional structural diagram of the present invention as a whole.
[0020] Figure 3 It is a structural schematic diagram of the No. 1 reinforcement mechanism of the present invention.
[0021] Figure 4 It is a schematic cross-sectional structural diagram of the No. 1 reinforcement mechanism of the present invention.
[0022] Figure 5 It is an enlarged structural schematic diagram of some components of the No. 1 reinforcement mechanism of the present invention.
[0023] Figure 6 It is a structural schematic diagram of the pouring mechanism of the present invention.
[0024] Figure 7 It is a schematic cross-sectional structural diagram of the casting mechanism of the present invention.
[0025] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point A in the middle.
[0026] Fig. 9 The present invention is a flow chart of a method for using a prefabricated structure for reinforcing a subway shield tunnel.
[0027] In the figure: 1. shield segment; 2. I-beam; 3. No. 1 reinforcement mechanism; 4. casting mechanism; 5. No. 2 reinforcement mechanism; 31. support seat; 32. inner rib plate; 33. No. 1 ring flange; 34. wave arch ring; 35. casting hole; 36. reinforcement rib plate; 37. triangular arch ring; 38. No. 1 casting mold; 39. No. 2 ring flange; 30. No. 2 casting mold; 41. bottom frame; 42. inner groove; 43. slide plate; 44. anti-leakage pad; 45. punch rod; 46. No. 1 limit plate; 47. No. 2 limit plate; 48. support plate; 49. casting head; 40. reset spring; 401. injection pipe; 402. three-frame; 403. sliding plate; 404. magnetic pressure strip; 405. magnetic block; 406. No. 1 triangular block; 407. No. 2 triangular block. DETAILED DESCRIPTION
[0028] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0029] See also Figures 1 to 9 The present invention provides a technical solution: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it includes a No. 1 reinforcement mechanism 3, which is used to reinforce the tunnel after the shield tunneling is completed; A pouring mechanism 4, which is used to pour concrete on the parts with gaps after reinforcement; A second reinforcement mechanism 5 is arranged at one end of the casting mechanism 4 away from the first reinforcement mechanism 3 . The bottoms of the first reinforcement mechanism 3 and the second reinforcement mechanism 5 are fixedly connected with shield segments 1 , and an I-beam 2 is arranged on the top of the shield segment 1 .
[0030] The No. 1 reinforcement mechanism 3 includes a support seat 31, which is symmetrically connected to the two ends of the shield segment 1. The interior of the support seat 31 is fixedly connected with an inner rib 32, the top of the support seat 31 is fixedly connected with a No. 1 ring flange 33, the inner side of the No. 1 ring flange 33 is fixedly connected with a wave arch ring 34, the end of the wave arch ring 34 away from the No. 1 ring flange 33 is fixedly connected with a No. 2 ring flange 39, the outer side of the No. 1 ring flange 33 is fixedly connected with a reinforcing rib 36, the surface of the No. 1 ring flange 33 is provided with a casting hole 35, the surface of the wave arch ring 34 is plugged with a triangular arch ring 37, and the wave arch rings 34 and the triangular arch rings 37 are cross-connected. Therefore, during the process of force stretching, the wave shape of the wave arch ring 34 can restrain each other between adjacent wave crests and wave troughs, which is similar to a chain structure, and prevents the expansion of cracks to a certain extent; when the triangular arch ring 37 is subjected to shear force, the shear force can be decomposed into component forces along the sides of the triangle. According to the parallelogram law of force, the shear force will be decomposed into two or more components related to the direction of the triangle side. These components will be transmitted along the edge of the arch ring, so that the entire structure can bear the external force together. One end of the triangular arch ring 37 is fixedly connected to the No. 1 ring flange 33, and the end of the triangular arch ring 37 away from the No. 1 ring flange 33 is fixedly connected to the inner side of the No. 2 ring flange 39. The No. 1 casting mold 38 is set on the side of the No. 2 ring flange 39 away from the triangular arch ring 37. The top of the No. 1 casting mold 38 is extruded and adapted with the No. 2 casting mold 30. The support seat 31 is symmetrically connected to the two ends of the shield segment 1 through fasteners, and then fixed. The No. 1 ring flange 33 fixedly connected to the top of the support seat 31 will support the tunnel behind the shield. At the same time, the No. 2 ring flange 39 connected to the inner side of the No. 1 ring flange 33 through the wave arch ring 34 also supports the tunnel behind the shield. The surface of the wave arch ring 34 is provided with casting holes 35, and then concrete is injected into the space enclosed by the wave arch ring 34 and the shield structure through the casting holes 35, in order to fill the gap between the wave arch ring 34 and the tunnel formed by the shield structure.
[0031] like Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, the casting mechanism 4 includes a bottom connecting frame 41, which is fixedly connected to the bottom of the No. 2 casting mold 30. Inner grooves 42 are symmetrically opened on both sides of the inner cavity of the bottom connecting frame 41. The inner grooves 42 are slidably adapted with slide plates 43. The center of the slide plate 43 is fixedly connected with a leak-proof pad 44. The center of the leak-proof pad 44 is extruded with a punching rod 45, wherein a friction relationship is generated between the leak-proof pad 44 and the punching rod 45 through a friction protrusion, and the outer side of the punching rod 45 is respectively fixedly connected with a No. 1 limit plate 46 and a No. 2 limit plate 47, wherein the No. 1 limit plate 46 is above the leak-proof pad 44, and the No. 2 limit plate 47 is below the leak-proof pad 44, wherein the No. 1 limit plate 46 and the No. 2 limit plate 47 fixedly connected to the outer side of the punching rod 45 play a role in limiting the moving distance of the punching rod 45. The top of the slide plate 43 is fixedly connected with a support plate 48, the inner side of the support plate 48 is rotatably connected with a pouring head 49 through a rotating shaft, the bottom of the pouring head 49 is pressed and adapted with the punching rod 45, the bottom of the pouring head 49 is respectively fixedly connected with a return spring 40 and an injection pipe 401, the return spring 40 is fixedly connected to the top of the slide plate 43, and when the No. 1 reinforcement mechanism 3 and the No. 2 reinforcement mechanism 5 are installed, the No. 1 casting mold 38 and the No. 2 casting mold 30 are placed together between the No. 1 reinforcement mechanism 3 and the No. 2 reinforcement mechanism 5, and then the punching rod 45 is slowly pushed upward, so that the anti-fouling material on the outer side thereof is pressed and adapted by the friction protrusion. The leak-proof pad 44 will initially move upward along the inner groove 42 with the slide plate 43. At this time, the support plate 48 fixedly connected to the top of the slide plate 43 will move upward with the pouring head 49 and extend into the interior of the No. 2 pouring mold 30. Then, when the slide plate 43 moves to the top of the inner groove 42, the punch rod 45 still squeezes the leak-proof pad 44 and continues to move upward, and then squeezes the tail of the pouring head 49, causing the pouring head 49 to deflect through the rotating shaft and stretch the reset spring 40, wherein the reset spring 40 initially remains in a compressed state, and at the same time plays a role in resetting the pouring head 49, thereby playing a preliminary preparation role for the pouring of concrete.
[0032] The injection tube 401 is respectively inserted into the bottom of the slide plate 43 and the bottom of the bottom frame 41 and extends to the outside. The bottom of the bottom frame 41 is fixedly connected with three side frames 402. The inner sliding adapter of the three side frames 402 is equipped with a sliding sheet 403. The outer side of the sliding sheet 403 is fixedly connected with a No. 1 triangular block 406. The outer side of the No. 1 triangular block 406 is extruded and adapted with a No. 2 triangular block 407. The No. 2 triangular block 407 is fixedly connected to the outer side of the punch rod 45. The inner side of the sliding sheet 403 is fixedly connected with a magnetic pressure strip 404. A magnetic block 405 is arranged on the side of the magnetic pressure strip 404 away from the sliding sheet 403. The magnetic block 405 is fixedly connected to the inner side of the three side frames 402. The upward movement of the punch rod 45 causes the No. 2 triangle block 407 fixedly connected to its outer side to move upward and away from the No. 1 triangle block 406. At this time, the No. 1 triangle block 406 is carried by the sliding sheet 403 and away from the three-sided frame 402 under the repulsive force between the magnetic pressure strip 404 and the magnetic block 405. Then the injection pipe 401 connected to the casting head 49 is connected, and concrete is sprayed out from the casting head 49 to realize the cement pouring treatment of the No. 2 casting mold 30 and the No. 1 casting mold 38, thereby playing the role of filling the several centimeters gap between the No. 1 reinforcement mechanism 3 and the No. 2 reinforcement mechanism 5 with concrete.
[0033] When the present invention is in use: first, the support seat 31 is symmetrically connected to the two ends of the shield segment 1 through fasteners, and then the No. 1 ring flange 33 fixedly connected to the top of the support seat 31 will support the tunnel behind the shield. At the same time, the No. 2 ring flange 39 connected to the inner side of the No. 1 ring flange 33 through the wave arch ring 34 also supports the tunnel behind the shield. The surface of the wave arch ring 34 is provided with a casting hole 35, and then concrete is injected into the space enclosed by the wave arch ring 34 and the shield structure through the casting hole 35, so as to fill the gap between the wave arch ring 34 and the tunnel formed by the shield structure.
[0034] When the No. 1 reinforcement mechanism 3 and the No. 2 reinforcement mechanism 5 are installed, the No. 1 casting mold 38 and the No. 2 casting mold 30 are placed together between the No. 1 reinforcement mechanism 3 and the No. 2 reinforcement mechanism 5, and then the punch rod 45 is slowly pushed upward, so that the leak-proof pad 44 adapted on its outer side through the friction protrusion will initially move upward along the inner groove 42 with the slide plate 43. At this time, the support plate 48 fixedly connected to the top of the slide plate 43 will move upward with the casting head 49 and extend into the interior of the No. 2 casting mold 30. Then, when the slide plate 43 moves to the top of the inner groove 42, the punch rod 45 still squeezes the leak-proof pad 44 and continues to move upward, and then squeezes the tail of the casting head 49, causing the casting head 49 to deflect through the rotating shaft and stretch the return spring 40. As the punch rod 45 moves upward, the No. 2 triangle block 407 fixedly connected to its outer side will move upward accordingly and away from the No. 1 triangle block 406. At this time, the No. 1 triangle block 406 will be carried by the sliding sheet 403 and away from the three-sided frame 402 under the repulsive force between the magnetic pressure strip 404 and the magnetic block 405. Then the injection pipe 401 connected to the casting head 49 will be connected, and concrete will be sprayed out from the casting head 49 to realize the cement pouring treatment of the No. 2 casting mold 30 and the No. 1 casting mold 38.
[0035] The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work all fall within the scope of protection of the present invention.
Claims
1. An assembled structure for reinforcing a subway shield tunnel, characterized in that: include: A first reinforcement mechanism (3), the first reinforcement mechanism (3) being used to reinforce a tunnel after shield tunneling; A pouring mechanism (4), the pouring mechanism (4) being used to pour concrete on the parts with gaps after reinforcement; A second reinforcement mechanism (5) is provided at one end of the casting mechanism (4) away from the first reinforcement mechanism (3); the bottoms of the first reinforcement mechanism (3) and the second reinforcement mechanism (5) are both fixedly connected to a shield segment (1); and an I-beam (2) is provided at the top of the shield segment (1); The first reinforcement mechanism (3) comprises a support seat (31), the support seat (31) is symmetrically connected to two ends of the shield segment (1), an inner rib plate (32) is fixedly connected inside the support seat (31), and a first ring flange (33) is fixedly connected to the top of the support seat (31); A wave arch ring (34) is fixedly connected to the inner side of the first ring edge flange (33), and a second ring edge flange (39) is fixedly connected to one end of the wave arch ring (34) away from the first ring edge flange (33).
2. The assembled structure for reinforcing a subway shield tunnel according to claim 1, characterized in that: A reinforcing rib (36) is fixedly connected to the outer side of the first ring edge flange (33), a casting hole (35) is opened on the surface of the first ring edge flange (33), and a triangular arch ring (37) is inserted into the surface of the wave arch ring (34).
3. The assembled structure for reinforcing a subway shield tunnel according to claim 2 is characterized in that: One end of the triangular arch ring (37) is fixedly connected to the first ring edge flange (33), and one end of the triangular arch ring (37) away from the first ring edge flange (33) is fixedly connected to the inner side of the second ring edge flange (39). A first casting mold (38) is provided on a side of the second ring edge flange (39) away from the triangular arch ring (37), and a second casting mold (30) is extruded and adapted on the top of the first casting mold (38).
4. The assembled structure for reinforcing a subway shield tunnel according to claim 1 is characterized in that: The casting mechanism (4) comprises a bottom connection frame (41), the bottom connection frame (41) being fixedly connected to the bottom of the second casting mold (30), inner grooves (42) being symmetrically provided on both sides of the inner cavity of the bottom connection frame (41), and a slide plate (43) being adapted to slide inside the inner groove (42).
5. The assembled structure for reinforcing a subway shield tunnel according to claim 4 is characterized in that: The central portion of the slide plate (43) is fixedly connected with a leak-proof pad (44), and the central portion of the leak-proof pad (44) is extruded and adapted with a punching rod (45), wherein a friction relationship is generated between the leak-proof pad (44) and the punching rod (45) via a friction protrusion.
6. The assembled structure for reinforcing a subway shield tunnel according to claim 5, characterized in that: The outer sides of the punching rod (45) are respectively fixedly connected with a first limiting piece (46) and a second limiting piece (47), wherein the first limiting piece (46) is located above the anti-leakage pad (44), and the second limiting piece (47) is located below the anti-leakage pad (44).
7. The assembled structure for reinforcing a subway shield tunnel according to claim 4, characterized in that: The top of the slide plate (43) is fixedly connected to a support plate (48), the inner side of the support plate (48) is rotatably connected to a casting head (49) via a rotating shaft, the bottom of the casting head (49) is extruded and adapted to the punching rod (45), the bottom of the casting head (49) is respectively fixedly connected to a return spring (40) and a material injection pipe (401), and the return spring (40) is fixedly connected to the top of the slide plate (43).
8. The assembled structure for reinforcing a subway shield tunnel according to claim 7, characterized in that: The injection tube (401) is respectively inserted through the bottom of the slide plate (43) and the bottom connection frame (41) and extends to the outside; the bottom of the bottom connection frame (41) is fixedly connected with three side frames (402); the interior of the three side frames (402) is slidably adapted with a sliding sheet (403).
9. The assembled structure for reinforcing a subway shield tunnel according to claim 8, characterized in that: The outer side of the sliding sheet (403) is fixedly connected to a first triangle block (406), the outer side of the first triangle block (406) is extruded and adapted to have a second triangle block (407), the second triangle block (407) is fixedly connected to the outer side of the punching rod (45), the inner side of the sliding sheet (403) is fixedly connected to a magnetic pressure strip (404), a magnetic block (405) is provided on a side of the magnetic pressure strip (404) away from the sliding sheet (403), and the magnetic block (405) is fixedly connected to the inner side of the three borders (402).
10. A method for using an assembled structure for reinforcing a subway shield tunnel, used for the assembled structure for reinforcing a subway shield tunnel according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Installation, by symmetrically connecting the support seat (31) to the two ends of the shield segment (1) through fasteners, and then fixing the No. 1 ring flange (33) connected to the top of the support seat (31), the tunnel behind the shield will be supported; Step 2: preliminary preparation, by moving the punch rod (45) upward and striking the pouring head (49), the pouring head (49) will then deflect through the rotating shaft and stretch the return spring (40), and the pouring head (49) will enter the second pouring mold (30), achieving preliminary preparation for concrete pouring; Step 3: Casting process, the injection pipe (401) connected to the casting head (49) is connected, so that concrete will be sprayed out from the casting head (49) through the pipe, so as to realize the cement pouring process of the second casting mold (30) and the first casting mold (38).