CN114320351B - A construction method for reinforcing a shield tunnel segment joint structure - Google Patents
A construction method for reinforcing a shield tunnel segment joint structure Download PDFInfo
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- CN114320351B CN114320351B CN202210124733.0A CN202210124733A CN114320351B CN 114320351 B CN114320351 B CN 114320351B CN 202210124733 A CN202210124733 A CN 202210124733A CN 114320351 B CN114320351 B CN 114320351B
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- joint
- damaged
- long steel
- buckle
- anchor rod
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- 238000010276 construction Methods 0.000 title claims abstract description 33
- 230000003014 reinforcing effect Effects 0.000 title abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 239000002689 soil Substances 0.000 claims abstract description 13
- 239000011083 cement mortar Substances 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 230000002787 reinforcement Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 3
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a construction method of a shield tunnel segment joint reinforcing structure, which comprises a long steel buckle, a winch and a perforated anchor rod, wherein the long steel buckle is fixed on a normal joint or a damaged joint of a shield tunnel damage ring, the long steel buckle is connected with the winch through a steel cable with a shaft force meter, the perforated anchor rod is connected with the long steel buckle fixed on the damaged joint through an arc-shaped buckle plate, cement mortar is injected into a soil body through the perforated anchor rod, and the construction steps comprise preparation of materials and equipment before construction, equipment fixing, site cleaning, site construction and site cleaning. The shield tunnel segment joint reinforcing structure has the advantages of being strong in reinforcement pertinence, simple in construction equipment and guaranteed in reinforcing effect, and being specially used for constructing shield tunnel segment joints.
Description
Technical Field
The invention belongs to the field of tunnel reinforcement, and particularly relates to a construction method of a shield tunnel segment joint reinforcing structure.
Background
At present, although a plurality of reinforced structures and construction methods of the shield tunnel exist at present, the reinforced structures and construction methods of the shield tunnel segment joints are rarely special.
Therefore, it is necessary to continuously invent and improve the reinforcing structure and the construction method of the existing shield tunnel.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a construction method of a shield tunnel segment joint reinforcing structure.
The construction method of the shield tunnel segment joint reinforcing structure is characterized in that the shield tunnel segment joint reinforcing structure comprises a long steel buckle, a winch and a perforated anchor rod, wherein the long steel buckle is fixed on a normal joint or a damaged joint of a shield tunnel damaged ring, the long steel buckle is connected with the winch through a steel rope with a shaft force meter, the perforated anchor rod is connected with the long steel buckle fixed on the damaged joint through an arc-shaped buckle disc, cement mortar is injected into a soil body through the perforated anchor rod, and the arc-shaped buckle disc can be tightly attached to the damaged joint on the tunnel damaged ring.
The construction method comprises the following construction steps:
S1, preparing before construction, namely determining the sizes and the number of long steel buckles and steel ropes to be used, the power of a winch, the specifications of an arc-shaped buckle disc and a hole anchor rod according to the severity of field damaged joints and the number of segments in a damaged ring;
S2, equipment is fixed, namely a winding engine is erected on site, after a normal joint and a broken joint of a tunnel broken ring are grooved according to the size of a long steel button, the long steel button is inserted into soil, and then the long steel button is rotated by 90 degrees, so that the long steel button transversely buckles segments on the left side and the right side of the normal joint and the broken joint;
s3, site construction, namely respectively perforating the pipe pieces on two sides of the damaged joint, starting a winch to restore the damaged joint to a normal joint state, respectively driving a hole anchor rod through the perforating on the pipe pieces on two sides of the damaged joint, then injecting cement mortar into soil through the hole anchor rod, and finally after curing for a period of time, connecting the hole anchor rod with a strip steel buckle fixed on the damaged joint through an arc-shaped buckle plate;
s4, cleaning the site, namely filling the groove formed at the normal joint, recovering the steel cable and the winch, finishing the site and returning the equipment.
The invention has the following special and beneficial effects:
1. The shield tunnel segment joint reinforcing structure is special for reinforcing the construction shield tunnel segment joint, and has the advantages of strong pertinence, simple construction equipment and convenient construction;
2. The shield tunnel segment joint reinforcing structure of the invention firstly inserts a long steel bar into soil body and then rotates 90 degrees, then the openings on the segments at two sides of the damaged joint are respectively driven into anchor rods for grouting, and finally, the anchor rod is connected with a strip steel buckle fixed at the damaged joint through an arc-shaped buckle disc, and the reinforcing effect is guaranteed.
Drawings
Fig. 1 is a construction schematic diagram of a shield tunnel segment joint reinforcing structure.
Fig. 2 is a schematic diagram of the effect of the shield tunnel segment joint reinforcing structure.
FIG. 3 is a schematic view of a broken ring.
Fig. 4 is an overall schematic diagram of tunnel breakage.
Fig. 5 is an enlarged schematic view at a.
The reference numerals indicate 1-soil mass, 2-strip steel buckle, 3-steel cable, 4-axial force meter, 5-hoist, 6-cement mortar, 7-anchor rod with holes, 8-arc buckle disc, 9-segment, 10-normal joint 11-broken ring, 12-broken joint and 13-normal ring.
Detailed Description
The invention is further described below with reference to examples. The following examples are presented only to aid in the understanding of the invention. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
The shield tunnel segment joint reinforcing structure is specially used for reinforcing a segment joint of a shield tunnel, has strong pertinence, simple construction equipment and convenient construction, is characterized in that a long steel button is inserted into soil body and then rotated by 90 degrees, then holes on segments on two sides of a damaged joint are respectively driven into anchor rods for grouting, and finally the anchor rods are connected with the long steel button fixed on the damaged joint through an arc-shaped button plate, so that the reinforcing effect is guaranteed.
Example 1
The shield tunnel segment joint reinforcing structure comprises a long steel buckle 2, a winch 5 and a perforated anchor rod 7, wherein the long steel buckle 2 is fixed on the normal joint 10 or the broken joint 12 of the shield tunnel segment broken ring 11, the long steel buckle 2 is connected with the winch 5 through a steel rope 3 with a shaft force meter 4, the perforated anchor rod 7 is connected with the long steel buckle 2 fixed on the broken joint 12 through an arc-shaped buckle disc 8, cement mortar 6 is injected into a soil body 1 through the perforated anchor rod 7, the arc-shaped buckle disc 8 is arc-shaped and can be tightly attached to the broken joint 12 on the tunnel segment broken ring 11, as shown in fig. 1 and 5, and the effect after the shield tunnel segment joint reinforcing structure is completed and the steel rope and the winch are recovered is shown in fig. 2.
Example two
The specific implementation is that the diameter of a shield tunnel is 8m, each ring of the tunnel consists of 1 segment of 22.5 degrees and 5 segments of 67.5 degrees, and the length of the segment is 2m and the thickness is 0.3m. The two segment joints of a certain ring in the tunnel create severe staggering.
The concrete construction process comprises the following construction steps:
S1, preparation before construction, namely selecting 6 long steel buckles 2 with the length of 300mm, the width of 60mm and the thickness of 35mm according to the severity of field damaged joints 12 and the number of segments 9 in damaged rings 11, selecting 67 wire prestressed steel strands as steel ropes 3, selecting 80kW winches 5, selecting arc buckling plates 8 with the arc length of 200mm, the width of 50mm and the thickness of 25mm, selecting a perforated anchor rod 7 with the length of 9m and the diameter of 22mm, and conveying equipment and materials to a construction site;
s2, equipment is fixed, namely a windlass 5 is erected on site, grooves with the length of 300mm and the width of 60mm are formed on a normal joint 10 and a broken joint 12 of a tunnel broken ring 11 according to the size of a long steel bar button 2, then the long steel bar button 2 is inserted into a soil body 1, and then the long steel bar button 2 is rotated by 90 degrees, so that the long steel bar button 2 transversely buckles duct pieces 9 on the left side and the right side of the normal joint 10 and the broken joint 12;
S3, site construction, namely respectively forming holes with the diameter of 25mm on the pipe pieces 9 on the two sides of the damaged joint 12, starting a winch 5 to restore the damaged joint 12 to the state of the normal joint 10, taking care to observe an axial force meter on the steel cable 3 during the period to avoid overlarge axial force in a certain direction, respectively driving a hole anchor rod 7 through the holes on the pipe pieces 9 on the two sides of the damaged joint 12, then injecting cement mortar 6 into soil body 1 through the hole anchor rod 7, and finally connecting the hole anchor rod 7 with a strip steel buckle 2 fixed on the damaged joint 12 through an arc-shaped buckle disc 8 after 7 days of maintenance.
S4, cleaning the site, namely filling the groove formed at the normal joint 10, recovering the steel cable 3 and the winch 5, finishing the site, and returning the equipment.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210124733.0A CN114320351B (en) | 2022-02-10 | 2022-02-10 | A construction method for reinforcing a shield tunnel segment joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210124733.0A CN114320351B (en) | 2022-02-10 | 2022-02-10 | A construction method for reinforcing a shield tunnel segment joint structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114320351A CN114320351A (en) | 2022-04-12 |
| CN114320351B true CN114320351B (en) | 2025-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210124733.0A Active CN114320351B (en) | 2022-02-10 | 2022-02-10 | A construction method for reinforcing a shield tunnel segment joint structure |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213654857U (en) * | 2020-10-13 | 2021-07-09 | 康元轨道交通科技（福建）有限公司 | Subway shield constructs section of jurisdiction seam protector |
| CN216741541U (en) * | 2022-02-10 | 2022-06-14 | 浙大城市学院 | Shield tunnel section of jurisdiction seam reinforced structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002227594A (en) * | 2001-02-06 | 2002-08-14 | Penta Ocean Constr Co Ltd | Inter-segment fireproof joint structure of shield tunnel |
| CN105041337B (en) * | 2015-08-12 | 2017-11-03 | 河海大学 | The seam splicing construction and waterproof method of a kind of Tunnel Boring tunnel lining segment |
| CN107575250B (en) * | 2017-09-30 | 2018-10-23 | 康泰卓越（北京）建筑科技有限公司 | Operation phase duct pieces of shield tunnel seam blowby area method for blocking and radical cure method for maintaining |
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2022
- 2022-02-10 CN CN202210124733.0A patent/CN114320351B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213654857U (en) * | 2020-10-13 | 2021-07-09 | 康元轨道交通科技（福建）有限公司 | Subway shield constructs section of jurisdiction seam protector |
| CN216741541U (en) * | 2022-02-10 | 2022-06-14 | 浙大城市学院 | Shield tunnel section of jurisdiction seam reinforced structure |
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| Publication number | Publication date |
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| CN114320351A (en) | 2022-04-12 |
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