CN212837830U - Reinforcement system for reinforcing damaged segments of shield tunnel - Google Patents
Reinforcement system for reinforcing damaged segments of shield tunnel Download PDFInfo
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- CN212837830U CN212837830U CN202020377647.7U CN202020377647U CN212837830U CN 212837830 U CN212837830 U CN 212837830U CN 202020377647 U CN202020377647 U CN 202020377647U CN 212837830 U CN212837830 U CN 212837830U
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Abstract
The utility model provides a be used for reinforced (rfd) reinforcement system of damaged section of jurisdiction of shield tunnel which characterized in that: the reinforcing structure is arranged at the damaged part of the shield tunnel and is used for reinforcing damaged segments in the shield tunnel; the reinforcing structure comprises a crack repairing part and a block dropping repairing part, wherein the crack repairing part is used for repairing the damaged part of the segment crack of the forming shield tunnel, and the block dropping repairing part is used for repairing the damaged part of the segment dropping of the forming shield tunnel; through the scheme, the reinforcing and circumferential supporting are carried out on the damaged part of the shield tunnel, and the technical defect that the damaged pipe piece cannot be effectively prevented from being displaced and deformed in the damaged part by the existing shield tunnel damaged pipe piece reinforcing technology is solved.
Description
Technical Field
The utility model relates to a shield tunnel construction technical field especially relates to a technical field who is used for the damaged section of jurisdiction of shield tunnel to consolidate and repair, and specifically speaking is a reinforcement system that is used for the damaged section of jurisdiction of shield tunnel to consolidate.
Background
With the progress of society and the development of cities, more and more subway projects are put into construction. In the construction process of the subway, the shield method has safe construction and high tunneling speed; the whole process of propelling, unearthing, splicing and lining of the shield can realize automatic operation, and the construction labor intensity is low; ground traffic and facilities are not influenced, and facilities such as underground pipelines and the like are not influenced; the navigation is not influenced when the river channel is crossed, the construction is not influenced by weather conditions such as seasons, wind, rain and the like, and no noise and disturbance are generated in the construction; the long tunnel with large burial depth is built in the soft water-bearing stratum, the advantages of technical and economic superiority and the like are usually achieved, and a shield method is selected for most urban subway construction. But the construction is not standard, the preparation problem of section of jurisdiction to and concatenation problem, jack thrust are too big, attitude control problem and confined pressure problem all cause the phenomenon that the damaged wrong platform appears in the shield section of jurisdiction among the work progress easily, seriously influence construction safety. Therefore, how to effectively reinforce the damaged shield segment and ensure the construction safety of the shield tunnel is an urgent problem to be solved in the shield tunnel construction.
Although the existing methods for reinforcing the damage of the shield tunnel, such as grouting reinforcement, reinforcing of a lining ring steel plate, reinforcing of lining ring carbon fiber cloth and the like, are more, the problems of different construction methods are required to be selected when the segment is damaged in the construction process. A method for reinforcing damaged segments of a shield tunnel, which has high applicability and is convenient to operate, is lacked. In conclusion, the existing tunnel reinforcing technology is still in an exploration stage, the construction process is not mature, and the effect of preventing the shield tunnel segment from being damaged and reinforced is not ideal. Therefore, a shield tunnel segment breakage reinforcing structure with high applicability and convenient operation needs to be provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the utility model provides a be used for reinforced (rfd) reinforcement system of damaged section of jurisdiction of shield tunnel, through setting up annular bearing structure, reinforced structure isotructure has solved current damaged section of jurisdiction of shield tunnel reinforcement technique and can not effectively prevent that damaged section of jurisdiction from taking place the technical defect of displacement and deformation in damaged department. Adopt the utility model discloses can solve the damaged section of jurisdiction reinforcement technique of current shield tunnel and can not effectively prevent that damaged section of jurisdiction from taking place the technical defect of displacement and deformation in damaged department afterwards.
In order to realize the technical scheme, the utility model discloses a following technical scheme realizes:
a reinforcing system for reinforcing damaged segments of a shield tunnel comprises an annular supporting structure and a reinforcing structure, wherein the annular supporting structure is used for supporting the reinforcing structure, the reinforcing structure is arranged at a damaged position of the shield tunnel, and the reinforcing structure is used for reinforcing the damaged segments in the shield tunnel;
the reinforced structure comprises a crack repairing part and a block falling repairing part, wherein the crack repairing part is arranged at the segment crack damage position of the forming shield tunnel, and the block falling repairing part is arranged at the segment block falling damage position of the forming shield tunnel.
In order to better realize the utility model discloses, as above-mentioned technical scheme's further description, annular bearing structure includes the steel loop, chemical bolt, the steel loop comprises 6 arc steel sheets, the angle of arc steel sheet is 100 °, 60 °, 50 °, 40 respectively, the arc steel sheet according to the angle order is end to end in proper order and is formed the closed loop steel ring, each junction of arc steel sheet adopts groove welding method welded fastening, chemical bolt fixes the steel loop on the anchor ring of shield tunnel.
As a further description of the above technical solution, the crack repairing portion is formed by filling cracks of the segment with an epoxy-based adhesive.
As a further description of the above technical solution, the drop-block repair part includes a staggered joint filling layer, a steel bar planting, a steel bar mesh and a mortar block, the staggered joint filling layer is formed by filling a cement-based permeable crystalline material into a staggered joint of a forming tunnel, one end of the steel bar planting is embedded into a pipe to be repaired, the other end of the steel bar planting is connected with the steel bar mesh, the steel bar mesh is fixedly connected with the steel bar planting, and the steel bar mesh is used for reinforcing a drop-block damage part, and the mortar block is formed by filling mortar into the steel bar mesh.
As a further description of the above technical solution, the caulking repair structure has;
the hand hole filling structure is formed by filling cement mortar formed by sulphoaluminate super-early-strength cement into the hand hole;
a caulking repair portion formed by filling a caulking repair agent into a gap between the segment pieces.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model discloses a set up cyclic annular ring shaped support structure, reinforced structure isotructure, consolidate and the hoop supports the damaged department in shield tunnel, solved current shield tunnel damaged section of jurisdiction reinforcement technique and can not effectively prevent that damaged section of jurisdiction from taking place the technical defect of displacement and deformation in damaged department.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of the present invention;
fig. 2 is a schematic three-dimensional structure diagram of the annular support structure of the present invention;
fig. 3 is a schematic view of the three-dimensional structure of the reinforcing structure of the present invention;
FIG. 4 is a schematic view of repairing a portion of the utility model where the depth of the dropped block is less than 5 cm;
FIG. 5 is a schematic view of repairing a portion of the utility model where the depth of the dropped block is not less than 5 cm;
fig. 6 is a schematic plan view of the joint filling and repairing part of the present invention.
The figure is marked with 1-annular supporting structure, 2-reinforcing structure, 3-pipe piece, 11-steel ring, 12-chemical bolt, 21-crack repairing part, 22-broken block repairing part, 23-gap filling repairing structure, 221-staggered joint filling layer, 222-bar planting, 223-steel bar net piece, 224-mortar block, 231-hand hole filling part and 232-gap filling repairing part.
Detailed Description
The present invention will be described in detail and with reference to the preferred embodiments of the present invention, but the present invention is not limited thereto.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
The terms "upper", "lower", "left", "right", "inner", "outer", and the like refer to orientations or positional relationships based on the drawings, or the orientations or positional relationships that are conventionally used to place the products of the present invention, and are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "vertical" and the like do not require absolute perpendicularity between the components, but may be slightly inclined. Such as "vertical" merely means that the direction is relatively more vertical and does not mean that the structure must be perfectly vertical, but may be slightly inclined.
In the description of the present invention, it is also to be understood that the terms "disposed," "mounted," "connected," and the like are intended to be construed broadly unless otherwise specifically indicated and limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as a preferred embodiment, this embodiment takes a reinforcing system for reinforcing a damaged segment 3 of a circular shield tunnel as an example, and is shown in fig. 1 to 6;
a reinforcing system for reinforcing damaged duct pieces of a shield tunnel comprises an annular supporting structure 1 and a reinforcing structure 2, wherein the annular supporting structure 1 is used for supporting the reinforcing structure 2, the reinforcing structure 2 is arranged at a damaged part of the shield tunnel and is used for reinforcing damaged duct pieces 3 in the shield tunnel;
the reinforcing structure 2 comprises a crack repairing part 21 and a block falling repairing part 22, wherein the crack repairing part 21 is arranged at the crack damage part of the segment 3 of the forming shield tunnel, and the block falling repairing part 22 is arranged at the crack damage part of the segment 3 of the forming shield tunnel.
In order to better realize the utility model discloses, as above-mentioned technical scheme's further description, annular bearing structure 1 includes steel ring 11, chemical bolt 12, steel ring 11 comprises 6 arc steel sheets, the angle of arc steel sheet is 100 °, 60 °, 50 °, 40 respectively, the arc steel sheet according to the angle order is end to end in proper order and is formed the closed ring steel ring, each junction of arc steel sheet adopts groove welding method welded fastening, chemical bolt 12 fixes steel ring 11 on the anchor ring of shield tunnel.
For clearer and clear explanation the utility model discloses, in this embodiment the connected mode between two annular bearing structures adopt the groove welding method to carry out welded fastening.
As a preferred embodiment, as shown in fig. 5, the installation process of the steel ring 11 in this embodiment is as follows: firstly, determining a point position where a capping block of a tunnel ring to be reinforced is located, further placing a 100-degree arc-shaped steel plate at the bottom end of the tunnel ring to be reinforced, further respectively and sequentially installing two 60-degree arc-shaped steel plates and two 50-degree arc-shaped steel plates at two ends of the 100-degree arc-shaped steel plate, meanwhile, arranging a 40-degree arc-shaped steel plate installation position opposite to the capping block, and further installing a 40-degree arc-shaped steel plate on the installation position; and groove welding is carried out on the joint of each arc-shaped steel plate during installation.
In a preferred embodiment, the arc-shaped steel plate in the embodiment adopts steel with the original rust grade on the surface being grade A, the arc-shaped steel plate adopts anticorrosive primer for rust prevention, the surface of the steel plate is subjected to rust removal treatment before the primer is coated, and the rust removal grade is required to reach grade Sa 3; the arc-shaped steel plate is anticorrosive by adopting a spraying type polyurea elastomer coating, double-sided spraying is carried out before splicing, the thickness of the coating is uniform, and the thickness is more than or equal to 12 mm. Through the measures, the service life of the arc-shaped steel plate can be well prolonged.
As a preferred embodiment, the chemical bolts 12 in the embodiment are stainless steel bolts with the mechanical performance grade of A4-70 and the bolt spacing of not more than 400 mm. The chemical bolts 12 can be properly adjusted when meeting the bolt holes of the duct piece 3 and the bolts of the duct piece 3. In order to ensure the construction safety, the steel ring 11 can be fixed by an expansion anchor bolt when being installed, and a chemical anchor bolt is arranged for reinforcement after the ring formation. If the chemical bolt 12 collides with the steel bar in the duct piece 3, the position of the anchor bolt can be properly adjusted, and the adjustment distance is not more than 50 mm; the 3 degree of depth 160mm of section of jurisdiction are implanted to chemical bolt 12, and the bolt exposes length and is not more than 2~3 buckles, is connected arc steel sheet and section of jurisdiction 3.
As a further description of the above technical solution, the crack repairing portion 21 is formed by filling cracks of the segment 3 with an epoxy-based adhesive.
As a preferred embodiment, as shown in fig. 2, the epoxy adhesive in this embodiment is a mixture of an SD epoxy adhesive and an epoxy resin, and the specific operation process is as follows: firstly, scraping and smearing an epoxy adhesive with the thickness of 3mmSD by a spatula within the range of 60mm along the crack trend to ensure that the crack is fully covered; and then grouting by adopting low-pressure pouring epoxy resin.
As a further description of the above technical solution, the broken block repairing part 22 includes a staggered joint filling layer 221, a steel bar planting 222, a steel bar mesh 223, and a mortar block 224, where the staggered joint filling layer 221 is formed by filling a cement-based permeable crystalline material into a staggered joint of a forming tunnel, one end of the steel bar planting 222 is embedded into a pipe to be repaired, the other end is connected with the steel bar mesh 223, the steel bar mesh 223 is fixedly connected with the steel bar planting 222 and is used for reinforcing a broken part of a broken block, and the mortar block 224 is formed by filling mortar into the steel bar mesh 223.
As a further description of the above technical solution, the caulking repair structure 23 has;
a hand hole filling part 231, wherein the hand hole filling structure is formed by filling cement mortar formed by sulphoaluminate super early strength cement into the hand hole;
The caulking mending agent is a mixed liquid formed by matching elastic epoxy mortar according to a certain mixing ratio; and the caulking mending agent is prepared according to an elastic epoxy daub A group: epoxy daub group B: elastomeric epoxy grout =1:1:1-3:1: 5.
For clearer and clearer explanation, as a preferred embodiment, when the broken area of the dropping block is less than 01m and the depth is less than 5cm, the epoxy mortar is adopted for filling;
2) when the damaged area of the duct piece 34 is larger than or equal to 01m and the depth is larger than or equal to 5cm, cleaning an interface, painting a cement-based permeable crystalline coating for water prevention, and further preparing a mixed liquid of elastic epoxy cement and elastic epoxy slurry, wherein the preparation ratio is an elastic epoxy cement A group: epoxy daub group B: the method comprises the steps of preparing elastic epoxy grout =1:1:1-3:1:5, injecting mixed liquor into a damaged pipe piece 3 after preparation, further installing a planting bar 222 at a falling position, further installing a reinforcing mesh 223, further preparing mortar by adopting sulphoaluminate super early strength cement, further injecting the prepared mortar into a damaged position, and enabling the mortar to completely wrap the reinforcing mesh 223.
Through the scheme, the reinforcing and circumferential supporting are carried out on the damaged part of the shield tunnel, and the technical defect that the damaged pipe piece cannot be effectively prevented from being displaced and deformed in the damaged part by the existing shield tunnel damaged pipe piece reinforcing technology is solved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a be used for reinforced (rfd) reinforcement system of damaged section of jurisdiction of shield tunnel which characterized in that: the shield tunnel comprises an annular supporting structure (1) and a reinforcing structure (2), wherein the annular supporting structure (1) is used for supporting the reinforcing structure (2), the reinforcing structure (2) is arranged at the damaged position of the shield tunnel and is used for reinforcing damaged duct pieces (3) in the shield tunnel;
the reinforced structure (2) comprises a crack repairing part (21), a block falling repairing part (22) and a gap filling repairing structure (23), wherein the crack repairing part (21) is arranged at the crack damage part of the segment (3) of the forming shield tunnel, the block falling repairing part (22) is arranged at the crack damage part of the segment (3) of the forming shield tunnel, and the gap filling repairing structure (23) is arranged at the segment (3) connecting part of the forming shield tunnel.
2. The reinforcing system for reinforcing damaged segments of shield tunnels according to claim 1, wherein: annular bearing structure (1) includes steel ring (11), chemical bolt (12), steel ring (11) comprises 6 arc steel sheets, the angle of arc steel sheet is 100 °, 60 °, 50 °, 40 respectively, the arc steel sheet according to the angle order is end to end in proper order and forms closed ring steel ring, each junction of arc steel sheet adopts groove welding method welded fastening, chemical bolt (12) are fixed steel ring (11) on the anchor ring of shield tunnel.
3. The reinforcing system for reinforcing damaged segments of shield tunnels according to claim 1, wherein: the crack repairing portion (21) is formed by filling cracks of the tube sheet (3) with an epoxy adhesive.
4. The reinforcing system for reinforcing damaged segments of shield tunnels according to claim 1, wherein: the broken block repairing part (22) comprises a staggered joint filling layer (221), a steel bar planting layer (222), a steel bar net piece (223) and a mortar block (224), wherein the staggered joint filling layer (221) is formed by filling cement-based permeable crystalline materials into a staggered joint of a forming tunnel, one end of the steel bar planting layer (222) is embedded into a pipe to be repaired, the other end of the steel bar planting layer is connected with the steel bar net piece (223), the steel bar net piece (223) is fixedly connected with the steel bar planting layer (222), the steel bar net piece is used for reinforcing broken positions of broken blocks, and the mortar block (224) is formed by filling the mortar into the steel bar net piece (223).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020377647.7U CN212837830U (en) | 2020-03-23 | 2020-03-23 | Reinforcement system for reinforcing damaged segments of shield tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020377647.7U CN212837830U (en) | 2020-03-23 | 2020-03-23 | Reinforcement system for reinforcing damaged segments of shield tunnel |
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| CN202020377647.7U Active CN212837830U (en) | 2020-03-23 | 2020-03-23 | Reinforcement system for reinforcing damaged segments of shield tunnel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404518A (en) * | 2021-05-31 | 2021-09-17 | 中铁工程服务有限公司 | Shield tunnel segment repairing process |
| CN113503172A (en) * | 2021-05-31 | 2021-10-15 | 中铁工程服务有限公司 | Punching method and device for shield subway tunnel segment and storage medium |
| CN113927195A (en) * | 2021-11-03 | 2022-01-14 | 上海城建隧道装备科技发展有限公司 | Rapid emergency welding method for subway tunnel construction joint |
-
2020
- 2020-03-23 CN CN202020377647.7U patent/CN212837830U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404518A (en) * | 2021-05-31 | 2021-09-17 | 中铁工程服务有限公司 | Shield tunnel segment repairing process |
| CN113503172A (en) * | 2021-05-31 | 2021-10-15 | 中铁工程服务有限公司 | Punching method and device for shield subway tunnel segment and storage medium |
| CN113404518B (en) * | 2021-05-31 | 2022-07-26 | 中铁工程服务有限公司 | Shield tunnel segment repairing process |
| CN113503172B (en) * | 2021-05-31 | 2023-11-03 | 中铁工程服务有限公司 | Punching method and device for shield subway tunnel segment and storage medium |
| CN113927195A (en) * | 2021-11-03 | 2022-01-14 | 上海城建隧道装备科技发展有限公司 | Rapid emergency welding method for subway tunnel construction joint |
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