CN111851184A - Prefabricated base in shield tunnel and connection structure of prefabricated base and section of jurisdiction - Google Patents
Prefabricated base in shield tunnel and connection structure of prefabricated base and section of jurisdiction Download PDFInfo
- Publication number
- CN111851184A CN111851184A CN202010623612.1A CN202010623612A CN111851184A CN 111851184 A CN111851184 A CN 111851184A CN 202010623612 A CN202010623612 A CN 202010623612A CN 111851184 A CN111851184 A CN 111851184A
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- Prior art keywords
- base
- reserved
- precast concrete
- shield tunnel
- top surface
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011178 precast concrete Substances 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000010276 construction Methods 0.000 claims abstract description 16
- 238000009417 prefabrication Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 7
- 238000009411 base construction Methods 0.000 abstract description 3
- 239000004567 concrete Substances 0.000 abstract description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/006—Foundations for pavings made of prefabricated single units
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/003—Arrangement of tracks on bridges or in tunnels
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2201/00—Fastening or restraining methods
- E01B2201/04—Fastening or restraining methods by bolting, nailing or the like
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a prefabricated base in a shield tunnel, which comprises a prefabricated concrete base and is characterized in that: the precast concrete base is provided with a base top surface and a base bottom surface which are horizontally arranged, one side of the precast concrete base is a base arc surface arranged corresponding to the duct piece, the other side of the precast concrete base is a base vertical surface, the precast concrete base is provided with a reserved bolt hole, the reserved bolt hole extends from the base top surface to the base arc surface, and a reserved hand hole is arranged at the position, close to the reserved bolt hole, of the base top surface; and a caulking chamfer is arranged at the junction of the top surface of the base and the cambered surface of the base, and a reserved steel bar matched with the duct piece is arranged below the bottom surface of the base. On one hand, the method avoids the process of carrying out mass bar planting on the segments in the prior shield tunnel base construction, and reduces the damage to the segment structure; on the other hand, erection of a large number of templates in base construction is avoided, the construction efficiency is increased, and the prefabrication and assembly rate of the shield tunnel is improved; the structure is convenient to install, firm in connection, rapid in construction, economical and reasonable.
Description
Technical Field
The invention belongs to the field of shield tunnel engineering, and particularly relates to a prefabricated base in a shield tunnel and a connection structure of the prefabricated base and a duct piece.
Background
In recent years, with the rapid development of social economy and urbanization processes, the shield tunnel technology has become an indispensable key technology in infrastructure construction of important traffic and the like in China, and the prefabrication of the tunnel internal structure has also become a great trend in shield tunnel construction. However, the lower base of the double-layer shield tunnel is irregular in shape and needs a large amount of bar planting work, so that the lower base of the double-layer shield tunnel is not designed and constructed in a prefabricated mode.
Because shield tunnel section of jurisdiction arrangement of reinforcement is comparatively intensive, in the actual construction, the waste hole is extremely many when the base bar planting, leads to section of jurisdiction bar planting position to damage seriously, influences tunnel structure atress and durability. Meanwhile, the workload of bar planting and cast-in-place is large, the construction speed is low, and the construction efficiency is influenced.
Disclosure of Invention
The invention aims to provide a prefabricated base in a shield tunnel and a connection structure of the prefabricated base and a segment, which cancel a bar planting process, reduce damage to a segment structure, avoid erection of a large number of templates and increase construction efficiency.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a prefabricated base in shield tunnel, includes precast concrete base, its characterized in that: the precast concrete base is provided with a base top surface and a base bottom surface which are horizontally arranged, one side of the precast concrete base is a base arc surface arranged corresponding to the duct piece, the other side of the precast concrete base is a base vertical surface, the precast concrete base is provided with a reserved bolt hole, the reserved bolt hole extends from the base top surface to the base arc surface, and a reserved hand hole is arranged at the position, close to the reserved bolt hole, of the base top surface; and a caulking chamfer is arranged at the junction of the top surface of the base and the cambered surface of the base, and a reserved steel bar matched with the duct piece is arranged below the bottom surface of the base.
Furthermore, the reserved bolt holes and the reserved hand holes are arranged at intervals along the longitudinal direction of the base, namely the longitudinal direction of the tunnel; the caulking chamfers are continuously arranged along the longitudinal direction of the base, namely the longitudinal direction of the tunnel.
Furthermore, the top surface of the base is provided with a reserved steel bar or a sleeve so as to facilitate the prefabrication and assembly of the upright column or the wall body on the base and other lane structures.
Furthermore, the radius of the cambered surface of the base is smaller than the inner diameter of the shield tunnel segment by 10-100 mm, so that the base can be leveled and adjusted.
The utility model provides a connection structure of prefabricated base and section of jurisdiction in shield tunnel which characterized in that: pre-embedding a base connecting nut in the pipe piece, paving a cushion layer at the connecting part of the pipe piece and the base, installing a precast concrete base on the cushion layer, penetrating a connecting bolt into a reserved bolt hole of the precast concrete base, and screwing the tail end of the connecting bolt into the base connecting nut in the pipe piece; and a cast-in-place node is formed at the position of a reserved steel bar below the bottom surface of the base.
Furthermore, a stand column or a wall body is arranged on the base.
A construction method for a connection structure of a prefabricated base and a segment in a shield tunnel is characterized by comprising the following steps:
A. manufacturing a duct piece and a precast concrete base, embedding a base connecting nut in production of the duct piece, wherein the precast concrete base is provided with a reserved bolt hole, and a reserved hand hole is arranged at the position, close to the reserved bolt hole, of the top surface of the base; a caulking chamfer is arranged at the matching position of the top surface of the base and the duct piece;
B. After the duct pieces are assembled and molded, paving a cushion layer at the connecting part of the duct pieces and the base;
C. assembling the base in place, adjusting the height and direction of the base, penetrating connecting bolts from reserved bolt holes of the precast concrete base and screwing the connecting bolts with base connecting nuts of the duct piece, and arranging reserved steel bars matched with the duct piece below the bottom surface of the base;
D. binding lower reinforcing steel bars and pouring cast-in-place nodes;
E. performing base caulking construction and hand hole plugging;
F. and implementing the upright posts or the wall bodies on the base and other lane structures.
Furthermore, the reserved steel bars meet the requirement of the anchoring length of the steel bars.
Furthermore, the reserved bolt holes and the hand holes are arranged at intervals along the longitudinal direction of the base, namely the longitudinal direction of the tunnel; the caulking chamfer bases are longitudinally arranged, namely the longitudinal direction of the tunnel.
Compared with the prior art, the prefabricated base in the shield tunnel and the connection method of the prefabricated base and the segment avoid the process of carrying out mass bar planting on the segment during the construction of the shield tunnel base and reduce the damage to the segment structure; on the other hand, erection of a large number of templates in base construction is avoided, the construction efficiency is increased, and the prefabrication and assembly rate of the shield tunnel is improved; the structure is convenient to install, firm in connection, rapid in construction, economical and reasonable.
Drawings
Fig. 1 is a structural diagram of a prefabricated base in a shield tunnel according to the invention.
Fig. 2 is a schematic view of a connection method of a prefabricated base and a segment in a shield tunnel according to the present invention.
In the figure: 1-prefabricating a concrete base; 2-reserving bolt holes; 3-reserving a hand hole; 4-reserving caulking chamfers; 5-reserving reinforcing steel bars; 6-shield tunnel segment; 7-base coupling nut; 8-cushion layer; 9-cast-in-place node; 10-bolt; 11-base caulking; 12-plugging the hand hole; 13-upright posts or walls and other lane structures.
Detailed Description
The invention is further described with reference to the accompanying drawings and examples.
The utility model provides a prefabricated base in shield tunnel, includes precast concrete base 1, its characterized in that: the precast concrete base 1 is provided with a base top surface and a base bottom surface which are horizontally arranged, one side of the precast concrete base is a base arc surface arranged corresponding to the pipe piece, the other side of the precast concrete base is a base vertical surface, the precast concrete base is provided with a reserved bolt hole 2, the reserved bolt hole 2 extends from the base top surface to the base arc surface, the reserved bolt hole 2 and the base top surface form an angle of 35-55 degrees, and a reserved hand hole 3 is arranged at the position, close to the reserved bolt hole, of the base top surface; and a caulking chamfer is arranged at the junction of the top surface of the base and the cambered surface of the base, and a reserved steel bar 5 matched with the duct piece is arranged below the bottom surface of the base.
The prefabricated base in the shield tunnel comprises a prefabricated concrete base 1, a reserved bolt hole 2, a reserved hand hole 3, a caulking chamfer 4 and a reserved steel bar 5;
further, the construction method comprises the following steps:
a) embedding a base connecting nut 7 in production of the duct piece 6;
b) after the duct pieces 6 are assembled and molded, paving a cushion layer 8 at the connecting part of the duct pieces and the base;
c) assembling the base 1 in place, adjusting the height and direction of the base 1, penetrating the connecting bolt 10 from the bolt hole 2 and screwing;
d) binding reserved steel bars 5 at the lower part of the base with reserved steel bars on two sides of a lane and pouring cast-in-place nodes 9;
e) constructing a base caulking 11 at a caulking chamfer, and plugging 12 a reserved hand hole 3 by a hand hole;
f) implementing the base upper uprights or walls and other lane structures 13.
Further, the cross section of the precast concrete base 1 is approximately in an inverted right trapezoid shape; reserved steel bars 5 are arranged on the bottom surface (short edge) of the base; the top surface (long edge) of the base is provided with a bolt hand hole 3 and a caulking chamfer 4; the inclined plane is a base cambered surface.
Further, the reserved steel bars 5 meet the requirement of the anchoring length of the steel bars.
Further, the reserved bolt holes 2 and the hand holes 3 are arranged at intervals along the longitudinal direction of the base 1, namely the longitudinal direction of the tunnel; the caulking chamfers 4 are arranged in the longitudinal direction of the base, namely the longitudinal direction of the tunnel.
Furthermore, the top surface (long edge) of the base can be provided with a reserved steel bar or a sleeve so as to be convenient for prefabricating and assembling the upright columns or the wall body on the base and the rest lane structures 13.
Furthermore, the radius of the inclined plane arc is smaller than the inner diameter of the shield tunnel segment by 10-100 mm, so that the base can be leveled and adjusted.
While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (8)
1. The utility model provides a prefabricated base in shield tunnel, includes precast concrete base, its characterized in that: the precast concrete base is provided with a base top surface and a base bottom surface which are horizontally arranged, one side of the precast concrete base is a base arc surface arranged corresponding to the duct piece, the other side of the precast concrete base is a base vertical surface, the precast concrete base is provided with a reserved bolt hole, the reserved bolt hole extends from the base top surface to the base arc surface, and a reserved hand hole is arranged at the position, close to the reserved bolt hole, of the base top surface; and a caulking chamfer is arranged at the junction of the top surface of the base and the cambered surface of the base, and a reserved steel bar matched with the duct piece is arranged below the bottom surface of the base.
2. The prefabricated pedestal in a shield tunnel according to claim 1, characterized in that: the reserved bolt holes and the reserved hand holes are arranged at intervals along the longitudinal direction of the base, namely the longitudinal direction of the tunnel; the caulking chamfers are continuously arranged along the longitudinal direction of the base, namely the longitudinal direction of the tunnel.
3. The prefabricated pedestal in a shield tunnel according to claim 1, characterized in that: and the top surface of the base is provided with a reserved steel bar or a sleeve so as to facilitate the prefabrication and assembly of the upright column or the wall body on the base and other lane structures.
4. The prefabricated pedestal in a shield tunnel according to claim 1, characterized in that: the radius of the cambered surface of the base is smaller than the inner diameter of the shield tunnel segment by 10-100 mm, so that the base can be leveled and adjusted.
5. The utility model provides a connection structure of prefabricated base and section of jurisdiction in shield tunnel which characterized in that: pre-embedding a base connecting nut in the pipe piece, paving a cushion layer at the connecting part of the pipe piece and the base, installing a precast concrete base on the cushion layer, penetrating a connecting bolt into a reserved bolt hole of the precast concrete base, and screwing the tail end of the connecting bolt into the base connecting nut in the pipe piece; and a cast-in-place node is formed at the position of a reserved steel bar below the bottom surface of the base.
6. The connecting structure of the prefabricated base and the segment in the shield tunnel according to claim 5, characterized in that: the base is provided with a vertical column or a wall body.
7. A construction method for a connection structure of a prefabricated base and a segment in a shield tunnel is characterized by comprising the following steps:
A. manufacturing a duct piece and a precast concrete base, embedding a base connecting nut in production of the duct piece, wherein the precast concrete base is provided with a reserved bolt hole, and a reserved hand hole is arranged at the position, close to the reserved bolt hole, of the top surface of the base; a caulking chamfer is arranged at the matching position of the top surface of the base and the duct piece;
B. after the duct pieces are assembled and molded, paving a cushion layer at the connecting part of the duct pieces and the base;
C. assembling the base in place, adjusting the height and direction of the base, penetrating connecting bolts from reserved bolt holes of the precast concrete base and screwing the connecting bolts with base connecting nuts of the duct piece, and arranging reserved steel bars matched with the duct piece below the bottom surface of the base;
D. binding lower reinforcing steel bars and pouring cast-in-place nodes;
E. performing base caulking construction and hand hole plugging;
F. and implementing the upright posts or the wall bodies on the base and other lane structures.
8. The construction method according to claim 7, wherein the reserved bolt holes and the hand holes are arranged at intervals along the longitudinal direction of the base, namely the longitudinal direction of the tunnel; the caulking chamfer bases are longitudinally arranged, namely the longitudinal direction of the tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010623612.1A CN111851184A (en) | 2020-07-01 | 2020-07-01 | Prefabricated base in shield tunnel and connection structure of prefabricated base and section of jurisdiction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010623612.1A CN111851184A (en) | 2020-07-01 | 2020-07-01 | Prefabricated base in shield tunnel and connection structure of prefabricated base and section of jurisdiction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111851184A true CN111851184A (en) | 2020-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010623612.1A Pending CN111851184A (en) | 2020-07-01 | 2020-07-01 | Prefabricated base in shield tunnel and connection structure of prefabricated base and section of jurisdiction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111851184A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003278495A (en) * | 2002-03-25 | 2003-10-02 | Taisei Corp | Tunnel structure |
| JP2004204583A (en) * | 2002-12-26 | 2004-07-22 | Taiheiyo Cement Corp | Bracket for mounting invert |
| KR20110132910A (en) * | 2010-06-03 | 2011-12-09 | 김원근 | Underpass using precast concrete pile and bottom slab and method for constructing the same |
| CN105625104A (en) * | 2016-01-11 | 2016-06-01 | 北京城建设计发展集团股份有限公司 | Precast slab type vibration damping rail structural system and matched construction method |
| CN107401091A (en) * | 2017-09-19 | 2017-11-28 | 北京市轨道交通建设管理有限公司 | A kind of assembled track structure and its construction method |
| CN108104825A (en) * | 2018-01-12 | 2018-06-01 | 中国铁路设计集团有限公司 | A kind of shield tunnel tunnel bottom backfills assembly construction method |
| CN108343451A (en) * | 2018-04-12 | 2018-07-31 | 北京市热力工程设计有限责任公司 | A kind of connection structure and method of duct pieces of shield tunnel and bracket |
| CN108396596A (en) * | 2018-04-23 | 2018-08-14 | 杭州唐普徕科技有限公司 | Novel fully-prefabricated assembled track structure for railroad track field tunnel |
| CN108708741A (en) * | 2018-04-27 | 2018-10-26 | 同济大学 | A kind of telescopic quick connecting method of double layer tunnel inside prefabricated stand column-pedestal |
| CN212742044U (en) * | 2020-07-01 | 2021-03-19 | 上海市政工程设计研究总院（集团）有限公司 | Prefabricated base in shield tunnel |
-
2020
- 2020-07-01 CN CN202010623612.1A patent/CN111851184A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003278495A (en) * | 2002-03-25 | 2003-10-02 | Taisei Corp | Tunnel structure |
| JP2004204583A (en) * | 2002-12-26 | 2004-07-22 | Taiheiyo Cement Corp | Bracket for mounting invert |
| KR20110132910A (en) * | 2010-06-03 | 2011-12-09 | 김원근 | Underpass using precast concrete pile and bottom slab and method for constructing the same |
| CN105625104A (en) * | 2016-01-11 | 2016-06-01 | 北京城建设计发展集团股份有限公司 | Precast slab type vibration damping rail structural system and matched construction method |
| CN107401091A (en) * | 2017-09-19 | 2017-11-28 | 北京市轨道交通建设管理有限公司 | A kind of assembled track structure and its construction method |
| CN108104825A (en) * | 2018-01-12 | 2018-06-01 | 中国铁路设计集团有限公司 | A kind of shield tunnel tunnel bottom backfills assembly construction method |
| CN108343451A (en) * | 2018-04-12 | 2018-07-31 | 北京市热力工程设计有限责任公司 | A kind of connection structure and method of duct pieces of shield tunnel and bracket |
| CN108396596A (en) * | 2018-04-23 | 2018-08-14 | 杭州唐普徕科技有限公司 | Novel fully-prefabricated assembled track structure for railroad track field tunnel |
| CN108708741A (en) * | 2018-04-27 | 2018-10-26 | 同济大学 | A kind of telescopic quick connecting method of double layer tunnel inside prefabricated stand column-pedestal |
| CN212742044U (en) * | 2020-07-01 | 2021-03-19 | 上海市政工程设计研究总院（集团）有限公司 | Prefabricated base in shield tunnel |
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