CN111594224B - Multifunctional embedded assembly of shield tunnel and implementation method - Google Patents
Multifunctional embedded assembly of shield tunnel and implementation method Download PDFInfo
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- CN111594224B CN111594224B CN202010420311.9A CN202010420311A CN111594224B CN 111594224 B CN111594224 B CN 111594224B CN 202010420311 A CN202010420311 A CN 202010420311A CN 111594224 B CN111594224 B CN 111594224B
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- 238000000034 method Methods 0.000 title abstract description 8
- 238000010276 construction Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000010008 shearing Methods 0.000 abstract description 3
- 238000007569 slipcasting Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 7
- 230000002427 irreversible effect Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to the field of shield tunnel construction, in particular to a multifunctional embedded assembly of a shield tunnel and an implementation method, wherein the embedded assembly comprises a threaded embedded part and a rear bolt, the threaded embedded part is arranged in a duct piece, one end of the threaded embedded part is communicated with a tunnel main tunnel, the threaded embedded part is provided with an internal thread, and the rear bolt is matched with the threaded embedded part; the inside slip casting pipe and the check valve that still pre-buried has of section of jurisdiction, and the slip casting pipe is connected through the check valve to the screw thread embedded part. When the device is used, the threaded embedded part is in threaded connection with a lifting hook of a segment erector, segments are lifted in place through the lifting hook, and after the lifting hook is disassembled, grouting behind the tunnel wall is realized through the threaded embedded part, the check valve and the grouting pipe; one end of the rear bolt is in threaded connection with the threaded embedded part, and the other end of the rear bolt penetrates into the hole of the rear structure to fill the hole tightly to form a filling structure, so that shearing resistance between the rear structure and the tunnel structure is realized.
Description
Technical Field
The invention relates to the field of shield tunnel construction, in particular to a multifunctional embedded assembly of a shield tunnel and an implementation method.
Background
The shield tunnel is formed by splicing a plurality of prefabricated pipe pieces. After the tunnel construction is completed, structures such as a ballast bed, a pedestrian platform, a square member and the like are often required to be additionally constructed at the bottom of the tunnel due to traffic or evacuation requirements. Because the tunnel section shape is mostly oval or circular, and section of jurisdiction internal surface is more smooth, needs certain anti-dislocation ability to keep the stability of structure between structure and the tunnel after doing.
At present, two conventional methods are used for solving the problem of the dislocation between a post-construction structure and a duct piece in a shield tunnel. The first is a duct piece which is chiseled and structurally jointed with the rear part, so that the contact friction force is increased; and the other method is to directly punch bolts or embedded bars on the pipe sheets and fixedly connect the post-made structure with the tunnel. These practices mainly have the following disadvantages:
1. and damaging the prefabricated pipe piece. The thickness of the steel bar protection layer on the inner side of the duct piece can be reduced by duct piece chiseling; after beat bolt or bar planting all need drill on the section of jurisdiction, these ways all can construct into irreversible damage to the section of jurisdiction knot, still can cause section of jurisdiction reinforcing bar corrosion, section of jurisdiction to fall the piece or fracture, section of jurisdiction hourglass scheduling problem when serious, cause tunnel structure shakiness, threaten driving safety.
2. The durability of the shear structure is often short, and diseases are easy to occur when the shear structure bears a dynamic load for a long time. The rear structure and the duct piece are fixed by using an adhesive material, but the service life of the adhesive material is limited by the current process, generally the service life does not exceed 30 years and 10 years of inspection are needed; the rear structure bears dynamic load for a long time, the problems of looseness, failure and even falling are easy to occur, and the use is very inconvenient.
Disclosure of Invention
The invention aims to: aiming at the problems that the damage of anti-dislocation measures to prefabricated pipe pieces is large and the anti-dislocation capability is not durable in the prior art, the multifunctional pre-buried assembly for the shield tunnel and the implementation method are provided, the pipe pieces are not damaged, and the anti-dislocation capability can be greatly improved.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a shield tunnel embedded component, includes screw thread built-in fitting and rearmounted bolt, and the screw thread built-in fitting is established inside the section of jurisdiction, and the one end of screw thread built-in fitting and the positive hole intercommunication in tunnel, and the screw thread built-in fitting is equipped with the internal thread, rearmounted bolt and screw thread built-in fitting adaptation. The tunnel main line main body structure is a tunnel main line main body structure. The rear bolt is used for fixing the rear structure on the segment structure; the threaded embedded part can be used for hoisting duct pieces and is matched and connected with the rear bolt to fix the duct pieces and then is used as a structure.
When the shield tunnel embedded component is used, a threaded embedded part is embedded in a segment structure in advance, a structure reserved hole is made after the threaded embedded part is used, one end of a rear bolt is in threaded connection with the threaded embedded part, the other end of the rear bolt penetrates into the hole of the structure, the hole is filled compactly, a filling structure is formed, and the structure is installed and fixed after the filling structure is made.
When there is the dislocation trend between doing structure and section of jurisdiction structure after, the rearmounted bolt of assembled begins the atress, and screw thread built-in fitting and section of jurisdiction structure provide the counter-force to satisfy the anti dislocation requirement between doing structure and the section of jurisdiction structure after, do not have extra damage to the section of jurisdiction structure.
Furthermore, a grouting pipe is embedded in the pipe piece and communicated with the threaded embedded part. Before the rear bolt is installed, concrete can be filled into the rear gap of the duct piece wall through the threaded embedded part and the grouting pipe.
Furthermore, at least one end of the threaded embedded part is provided with an anti-pulling part. The anti-pulling piece provides sufficient anti-pulling force for the embedded component, so that the embedded component is more reliably connected with concrete, and the component is prevented from being pulled out when hoisting and shearing actions are carried out.
Furthermore, the end, connected with the grouting pipe, of the threaded embedded part is provided with a check valve, and the check valve is communicated with the grouting pipe through the threaded embedded part to prevent the grouting liquid from flowing backwards.
Furthermore, the check valve is in threaded connection with the threaded embedded part, and the installation is convenient.
Furthermore, a water stop ring is arranged between the threaded embedded part and the check valve, so that the waterproof of the joint is ensured.
Further, the embedded assembly further comprises a screw cap, and the screw cap is matched with the threaded embedded part. When the structure is made after the installation, the screw cap is tightly screwed on the port of the threaded embedded part, so that water leakage at the hole where the segment embedded component is located is prevented.
The invention also provides a shield tunnel segment which comprises the shield tunnel embedded assembly, wherein the thread embedded part is embedded in the segment, and the rear bolt is used for connecting and then forming a structure. The shield tunnel embedded assembly is used for integral production, matched sale and use and convenient construction.
The invention provides a construction method of a shield tunnel based on the shield tunnel embedded assembly, wherein a threaded embedded part is embedded in a segment structure in advance, and the threaded embedded part is in threaded connection with a segment erector lifting hook during construction, and segments are lifted in place through the lifting hook; when a grouting pipe and a check valve are embedded in the segment structure in advance, the threaded embedded part is connected with the grouting pipe through the check valve, and after the lifting hook is disassembled, grouting is further performed on the segment wall through the threaded embedded part, the check valve and the grouting pipe; and finally, through a prefabricated rear structure reserved with a hole, one end of a rear bolt is in threaded connection with the threaded embedded part, the other end of the rear bolt penetrates into the hole, the hole is filled compactly to form a filling structure, the rear structure is prevented from moving in a wrong way and is fixed, and the rear structure has a shear-resisting function.
The invention is based on the tunnel structure, and can simultaneously realize multiple functions of hoisting, grouting and shearing resistance; the rear bolt and the rear structure can be taken down according to actual requirements after being installed, and a new rear structure can be replaced without causing irreversible damage to the tunnel structure.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the invention integrates the functions of hoisting, grouting after the wall and preventing dislocation, the installation of the embedded component basically does not cause additional influence on the construction, and the quality is easy to ensure.
2. The invention adopts a mechanical mode of threaded connection to replace the prior adhesive fixation, and has strong dynamic load bearing capacity, high anti-dislocation capacity and durability.
3. The rear bolt and the rear structure are directly mounted and dismounted by using the thread embedded part in the duct piece, so that the use is convenient, the problem that the reinforcing rear structure is formed by additionally drilling or roughening a large number of holes in the duct piece structure is completely avoided, the irreversible damage is avoided, and the stability of the tunnel structure is facilitated.
4. The invention can still be disassembled even after the post-construction structure is finished, and then the grouting is repeatedly carried out on the tunnel wall for a plurality of times, thereby greatly facilitating the settlement control of the tunnel in the operation stage, and having very convenient and effective use and high safety.
Drawings
Fig. 1 is a schematic view of the installation state of the embedded assembly with the post-construction structure.
Fig. 2 is a schematic view of the installation state of the embedded components when the structure is not installed.
Fig. 3 is an enlarged view of a portion a in fig. 2.
FIG. 4 is a schematic view of a threaded embedment.
Fig. 5 is a schematic view of the structure of the anti-plucking member.
Fig. 6 is a schematic structural view of the check valve.
Fig. 7 is a schematic view of the structure of the screw cap.
Icon: 1-a threaded embedded part; 2-rear bolt; 3-grouting pipe; 4-anti-pulling piece; 5-a check valve; 6-water stop ring; 7-screw cap; 8-a filling structure; 9-a duct piece; and 10-post-construction.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A shield tunnel embedded assembly is shown in figures 1-7 and comprises a threaded embedded part 1 and a rear bolt 2, wherein the threaded embedded part 1 is arranged inside a duct piece 9, one end of the threaded embedded part 1 is communicated with a tunnel main hole, the threaded embedded part 1 is provided with an internal thread, and the rear bolt 2 is matched with the threaded embedded part 1.
When the shield tunnel embedded component is used, the threaded embedded part 1 is embedded in the duct piece 9 structure in advance, the hole is reserved in the rear structure 10, one end of the rear bolt 2 is in threaded connection with the threaded embedded part 1, the other end of the rear bolt penetrates into the hole in the rear structure 10, the hole is filled compactly, the filling structure 8 is formed, and the rear structure is installed and fixed.
The rear bolt 2 is used for fixing the rear structure 10 on the segment 9 structure; the threaded embedded part 1 can be used for hoisting the duct piece 9 and is matched and connected with the rear bolt 2 to fix the rear structure 10. When there is the dislocation trend between doing structure 10 and section of jurisdiction 9 structure after, the rearmounted bolt 2 of assembled begins the atress, and screw thread built-in fitting 1 and section of jurisdiction 9 structure provide the counter-force to satisfy and do the anti dislocation requirement between structure 10 and the section of jurisdiction 9 structure after, do not have extra damage to section of jurisdiction 9 structure.
Specifically, as shown in fig. 1 and 2, a grouting pipe 3 is embedded inside the pipe piece 9, and the grouting pipe 3 is connected with the other end of the threaded embedded part 1. Referring to fig. 2, before the rear bolts 2 are installed, concrete can be filled into the gaps behind the wall of the segment 9 through the threaded embedded parts 1 and the grouting pipes 3. During construction, tools are needed to be used for getting through thin-layer concrete outside the holes where the embedded assemblies of the segments 9 are located, and the holes where the embedded assemblies of the segments 9 are located can be plugged by plugging agents after grouting is completed so as to prevent the pipelines inside the embedded assemblies from being polluted and blocked.
As shown in fig. 5 and 6, an anti-pulling part 4 and a check valve 5 are arranged at the end of the threaded embedded part 1 connected with the grouting pipe 3, wherein the anti-pulling part 4 is an anti-pulling ring plate and provides sufficient anti-pulling force for the embedded component. The check valve 5 is communicated with the grouting pipe 3 through the threaded embedded part 1 to prevent the grouting liquid from flowing backwards. The check valve 5 is in threaded connection with the threaded embedded part 1, and installation is convenient.
Referring to fig. 3, a water stop ring 6 is arranged between the threaded embedded part 1 and the check valve 5 to ensure that the joint is waterproof.
As shown in fig. 2 and 7, the embedded component further comprises a screw cap 7, one end of the screw cap 7 is closed, the other end of the screw cap is provided with an external thread, and the screw cap 7 is matched with the threaded embedded part 1. When the structure 10 is not installed, the screw cap 7 is tightly screwed on the port of the threaded embedded part 1, so that water leakage at the hole where the embedded component of the duct piece 9 is located is prevented.
Referring to fig. 1 and 4, the threaded embedded part 1 is of a middle hole type cross section structure, the overall dimension of the threaded embedded part is matched with that of the anti-pulling part 4, and the threads of the end openings at two ends of the grouting pipe 3 are respectively matched with the thread dimensions of the screw cap 7 and the rear bolt 2. In addition, the threaded embedded part 1, the grouting pipe 3, the anti-pulling part 4, the check valve 5, the screw cap 7 and the rear bolt 2 can be made of steel, high polymer materials and other materials, can be flexibly selected according to requirements, and are environment-friendly and economical.
The pre-buried subassembly in this embodiment both can be used to the section of jurisdiction hoist and mount, can be used to grouting behind the wall again, still can provide anti dislocation ability for shield tunnel and back do between the structure 10 through the rearmounted bolt 2 of assembled, and all functions all can be realized through same pre-buried subassembly. The embedded assembly completely avoids the problem of irreversible loss caused by a large number of drilled holes in the tunnel structure, greatly improves the anti-dislocation capability and has good structural stability; and the bearing capacity to dynamic loads of various rail transit trains is strong, and the service life is greatly prolonged. The anti-dislocation arrangement of the embedded component has the same theoretical service life as that of a concrete embedded part, and the maximum service life can reach 100 years. In addition, the installation of the embedded component is basically not influenced by construction, and the quality is easy to ensure.
Example 2
Based on embodiment 1, this embodiment provides a construction method of a shield tunnel, including the following steps:
(1) prefabricating a duct piece 9 containing the embedded assembly, embedding a threaded embedded part 1, a grouting pipe 3, an anti-pulling part 4, a check valve 5 and a water stop ring 6, and prefabricating a rear bolt 2 matched with the threaded embedded part 1;
(2) the method comprises the following steps that a segment erector of shield equipment is used, a threaded embedded part 1 is in threaded connection with a lifting hook on the segment erector, a segment 9 is lifted in place through the lifting hook, and the segment 9 is lifted;
(3) disassembling the lifting hook, then grouting behind the wall of the duct piece 9 through the threaded embedded part 1, the check valve 5 and the grouting pipe 3, filling a gap behind the tunnel wall, and reinforcing the support;
(4) one end of the rear bolt 2 is firmly connected with the threaded embedded part 1, the other end of the rear bolt is placed into a reserved hole of the rear structure 10, a compact filling structure 8 is formed by filling, and the anti-dislocation fixation between the rear structure 10 and the tunnel structure is achieved.
Wherein, rearmounted bolt 2 and back are made structure 10 and still can take off according to actual demand after installing, can do structure 10 and do not cause irreversible damage to tunnel structure after the renewal again, but also can realize tunnel wall post-grouting once more through pre-buried screw thread built-in fitting 1, slip casting pipe 3 and check valve 5, made things convenient for operation stage tunnel settlement control, it is very convenient, effective to use, and the security is high.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The shield tunnel embedded assembly is characterized by comprising a threaded embedded part (1) and a rear bolt (2), wherein the threaded embedded part (1) is arranged inside a duct piece (9), one end of the threaded embedded part (1) is communicated with a tunnel main hole, internal threads are arranged on the threaded embedded part (1), one end of the rear bolt (2) is in threaded connection with the threaded embedded part (1), and the other end of the rear bolt is used for filling a reserved hole which is in a structure with the rear part to form a filling structure.
2. The shield tunnel embedded assembly according to claim 1, further comprising a grouting pipe (3), wherein the grouting pipe (3) is embedded in the pipe piece (9) and communicated with the threaded embedded part (1).
3. The shield tunnel embedded assembly according to claim 2, wherein at least one end of the threaded embedded part (1) is provided with an anti-pulling part (4).
4. The shield tunnel embedded assembly according to claim 2, wherein a check valve (5) is arranged at the end where the threaded embedded part (1) is connected with the grouting pipe (3), and the check valve (5) is communicated with the grouting pipe (3) through the threaded embedded part (1).
5. The shield tunnel embedded assembly according to claim 4, wherein the check valve (5) is in threaded connection with the threaded embedded part (1).
6. The shield tunnel embedded assembly according to claim 4, wherein a water stop ring (6) is arranged between the threaded embedded part (1) and the check valve (5).
7. A shield tunnel embedment assembly according to any one of claims 1 to 6, further comprising a screw cap (7), said screw cap (7) being adapted to said threaded embedment (1).
8. A shield tunnel segment, characterized by comprising the shield tunnel embedded assembly according to any one of claims 1-7, wherein the threaded embedded part (1) is embedded in the segment (9), and the rear bolt (2) is used for connecting the rear structure (10).
9. A shield tunnel construction method based on the embedded assembly according to any one of claims 1-7 or the segment according to claim 8, characterized by comprising the following steps:
step one, adopting a duct piece (9) structure in which a threaded embedded part (1) is embedded in advance;
and step two, making a structure (10) to reserve a hole, connecting one end of the rear bolt (2) with the threaded embedded part (1) in a threaded manner, penetrating the other end of the rear bolt into the hole, and filling the hole tightly to form a filling structure (8).
10. The construction method according to claim 9, further comprising:
in the first step, when a grouting pipe (3) and a check valve (5) are pre-buried in the segment (9) structure, the threaded embedded part (1) is connected with the grouting pipe (3) through the check valve (5);
after the first step, the threaded embedded part (1) is in threaded connection with a lifting hook of a segment erector, the segment (9) is lifted in place through the lifting hook, the lifting hook is disassembled, and grouting is performed on the wall of the segment (9) through the threaded embedded part (1), the check valve (5) and the grouting pipe (3);
and then the second step is carried out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010420311.9A CN111594224B (en) | 2020-05-18 | 2020-05-18 | Multifunctional embedded assembly of shield tunnel and implementation method |
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| CN202010420311.9A CN111594224B (en) | 2020-05-18 | 2020-05-18 | Multifunctional embedded assembly of shield tunnel and implementation method |
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| CN111594224B true CN111594224B (en) | 2022-02-01 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006819A (en) * | 2021-03-10 | 2021-06-22 | 上海隧道工程智造海盐有限公司 | Segment grouting method |
| CN113266395A (en) * | 2021-07-01 | 2021-08-17 | 上海市城市建设设计研究总院（集团）有限公司 | Shield tunnel pipeline support connecting device and anti-falling device in earthquake high-intensity area |
| CN113417663A (en) * | 2021-07-16 | 2021-09-21 | 中铁五局集团有限公司 | Grouting construction method for shield tunnel segment |
| CN113803084B (en) * | 2021-08-25 | 2024-02-06 | 东南大学 | Pretreatment method for shield tunnel segment with track bed being empty |
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| CN103993895A (en) * | 2014-06-10 | 2014-08-20 | 中铁二院工程集团有限责任公司 | Hoisting, hydraulic reclamation and grouting embedded assembly for segmental lining prefabricated according to TMB construction method |
| CN104389623A (en) * | 2014-11-12 | 2015-03-04 | 中铁二院工程集团有限责任公司 | Shield tunnel prefabricated tunnel segment lining back stratum grouting device |
| CN209082504U (en) * | 2018-10-29 | 2019-07-09 | 青岛市政集团砼业工程有限公司 | A kind of concrete pipe sheet Grouting Pipe |
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|---|---|---|---|---|
| CN2606180Y (en) * | 2003-03-11 | 2004-03-10 | 上海市城市建设设计研究院 | Built-in plastic valve bolt with steel reinforced concrete structure |
| US20140137508A1 (en) * | 2010-09-24 | 2014-05-22 | Vincent Bussio | Rehabilitation of deteriorated manhole and other sewer structures |
| CN203334286U (en) * | 2013-06-19 | 2013-12-11 | 倪筠 | Grouting tube embedded part |
| CN103993895A (en) * | 2014-06-10 | 2014-08-20 | 中铁二院工程集团有限责任公司 | Hoisting, hydraulic reclamation and grouting embedded assembly for segmental lining prefabricated according to TMB construction method |
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