CN111927486A - Tunnel prefabricated structure construction method - Google Patents
Tunnel prefabricated structure construction method Download PDFInfo
- Publication number
- CN111927486A CN111927486A CN202010620503.4A CN202010620503A CN111927486A CN 111927486 A CN111927486 A CN 111927486A CN 202010620503 A CN202010620503 A CN 202010620503A CN 111927486 A CN111927486 A CN 111927486A
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- prefabricated
- cast
- tunnel
- bar
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- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000011065 in-situ storage Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
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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
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
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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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- 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
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (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 discloses a construction method of a tunnel prefabricated structure, which comprises the following steps: assembling shield tunnel segments pre-embedded with nuts; a cast-in-place base is arranged at the lower part of a construction shield tunnel segment; constructing prefabricated walls or prefabricated columns on two sides of a cast-in-place base, installing prefabricated support plates on the prefabricated walls or the prefabricated columns, and installing a template trolley and a cast-in-place node bottom die on the base; binding the cast-in-situ layer steel bar on the triangular shear bar of the prefabricated supporting plate, and bending two ends of the steel bar downwards at the position close to the inner arc surface of the duct piece; the bar planting on the duct piece is bound with the cast-in-place layer bar and the prefabricated support plate extending bar; pouring a cast-in-place layer and two end nodes above the prefabricated supporting plate, and reserving an anti-collision kerbstone mounting groove; and after the strength of the cast-in-situ layer meets 80%, installing the anti-collision curbstone in the anti-collision curbstone installation groove. The construction method of the tunnel prefabricated structure is suitable for narrow construction space in the shield tunnel, does not influence vehicle passing in the tunnel, and is convenient to install, firm in connection, rapid in construction, economical and reasonable.
Description
Technical Field
The invention belongs to the field of tunnel engineering, and particularly relates to a construction method of a tunnel prefabricated structure.
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.
In order to meet the driving requirements of 2-3 lanes, the width of a prefabricated lane plate is large, the internal space of the tunnel is limited, large-scale hoisting equipment is limited, and the prefabricated lane plate is inconvenient to transport and hoist in the tunnel; meanwhile, as the shield tunnel construction operation surface is multiple, the prefabrication and assembly of the internal structure need to ensure the smoothness of the transportation condition of the shield excavation surface operation (such as ensuring the normal supply of duct pieces, grouting materials and the like). The construction process of the conventional prefabricated structure usually needs larger hoisting equipment or occupies the transportation space in the tunnel, and has larger influence on the normal construction of the shield tunnel.
Disclosure of Invention
The invention aims to provide a construction method of a tunnel prefabricated structure, which is suitable for a narrow inner space of a shield tunnel, meets the lifting requirement of small-sized hoisting equipment in the tunnel, ensures the normal transportation space in the tunnel, and has the advantages of convenient structure installation, firm connection, quick construction, economy and reasonability.
In order to achieve the purpose, the invention is realized by the following technical scheme: a construction method of a tunnel prefabricated structure is characterized by comprising the following steps:
A. assembling shield tunnel segments, and embedding nuts in the shield tunnel segments;
B. constructing a cast-in-place base at the lower part of the shield tunnel segment;
C. assembling prefabricated walls or prefabricated columns on the cast-in-place base;
D. hoisting and assembling the prefabricated support plate, and mounting the prefabricated support plate on the prefabricated wall;
E. installing high-low-foot template trolleys on two sides of the prefabricated wall, ensuring the lateral stability of the template trolleys by utilizing connecting rods and embedded nuts in pipe pieces, and installing a cast-in-place node bottom die on the top of the template trolleys;
F. binding the cast-in-situ layer steel bar on the triangular shear bar of the prefabricated supporting plate, and bending two ends of the steel bar downwards at the position close to the inner arc surface of the duct piece;
G. the bar planting on the duct piece is bound with the cast-in-place layer bar and the prefabricated support plate extending bar;
H. pouring a cast-in-place layer and two end nodes above the prefabricated supporting plate, and reserving an anti-collision kerbstone mounting groove;
I. and after the strength of the cast-in-situ layer meets 80%, installing the anti-collision curbstone in the anti-collision curbstone installation groove.
Further, the construction method of the tunnel prefabricated structure is characterized by comprising the following steps: and D, transporting the support plates along the longitudinal direction of the tunnel according to the long edges because the width of the prefabricated support plates is larger than the clear distance between the base and the prefabricated wall on the two sides of the shield tunnel segment, hoisting the support plates to the upper part of the wall body by using a hoisting device to complete 90-degree rotation, and then installing the support plates on the wall body.
Further, the construction method of the tunnel prefabricated structure is characterized by comprising the following steps: and E, supporting one side of the high-low-foot template trolley on the base and one side of the high-low-foot template trolley on the duct piece, and ensuring the lateral stability of the template trolley through the connecting rod and the embedded nuts in the duct piece.
Compared with the prior art, the construction method of the tunnel prefabricated structure is suitable for the narrow inner space of the shield tunnel, meets the lifting requirement of small-sized hoisting equipment in the tunnel, ensures the normal transportation space in the tunnel, and has the advantages of convenient structure installation, firm connection, quick construction, economy and reasonability.
Drawings
Fig. 1 is a schematic view of the construction method of the tunnel prefabricated structure.
Fig. 2 is a schematic diagram of a prefabricated structure corresponding to the construction method of the tunnel prefabricated structure.
In the figure: 1-shield tunnel segment; 2-a base; 3, prefabricating the upright post; 4-prefabricating a middle thick plate of the supporting plate; 5-prefabricating a supporting base of the supporting plate; 6-prefabricating thin plates on two sides of the supporting plate; 7-cast-in-place layer; 8-crashproof kerbstone mounting grooves; 9-crashproof kerbstones; 10-end cast-in-place node; 11-triangular shear ribs; 12-prefabricating longitudinal ribs at the bottom of the supporting plate; 13-picking out longitudinal ribs at the bottom of the prefabricated supporting plate; 14-casting layer steel bars in situ; 15-template trolley; 16-node bottom die; 17-embedding nuts in the shield tunnel pipe sheet; 18-a connecting rod; 19-planting the ribs on the segments.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples:
the construction method of the tunnel prefabricated structure comprises the following steps:
1) embedding a nut 17 in the shield tunnel segment 1;
2) assembling the duct pieces 1;
3) constructing a cast-in-place base 2;
4) assembling the prefabricated wall or the prefabricated column 3;
5) hoisting and assembling the prefabricated support plate 4, wherein the width of the prefabricated support plate 4 is larger than the clear distance between the inner base 2 and the wall body or the column 3 of the tunnel, long edges are required for transporting the support plate 4 along the longitudinal direction of the tunnel, the support plate is hoisted to the upper part of the prefabricated wall 3 by a hoisting device to complete 90-degree rotation, the support legs 5 are arranged on the prefabricated wall 3, and the overhanging thin plates 6 at two ends extend out of the prefabricated wall or the column 3;
6) the two sides are provided with high-low-foot template trolleys 15, and the lateral stability of the template trolleys 15 is ensured by utilizing connecting rods 18 and embedded nuts 17 in the pipe sheets;
7) a node bottom die 16 is arranged on the template trolley;
8) binding the reinforcing steel bars 14 of the cast-in-place layer 7 on the triangular shear ribs 11 of the prefabricated support plate, and bending two ends of the reinforcing steel bars 14 downwards at the positions close to the inner cambered surfaces of the duct pieces 1;
9) the embedded bars 19 on the duct piece 1 are bound with the reinforcing steel bars 14 of the cast-in-situ layer 7 and the extending bars 13 of the prefabricated support plate 4;
10) pouring a cast-in-place layer 7 and two end nodes 10 above the prefabricated supporting plate, and reserving an anti-collision kerbstone mounting groove 8;
11) and after the strength of the cast-in-situ layer 7 meets 80%, installing anti-collision curbstones 9 in the anti-collision curbstone installation grooves 8.
Further, the prefabricated supporting plate 4 and the cast-in-place layer 5 are stressed together; the prefabricated wall 3 can be replaced into a prefabricated column; one side of the high-low-foot template trolley 15 is supported on the base 2, one side of the high-low-foot template trolley is supported on the pipe piece 1, and the lateral stability of the template trolley 15 is guaranteed through the connecting rod 18 and the embedded nut 17 in the pipe piece.
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 (3)
1. A construction method of a tunnel prefabricated structure is characterized by comprising the following steps:
the method comprises the following steps:
A. assembling shield tunnel segments, and embedding nuts in the shield tunnel segments;
B. constructing a cast-in-place base at the lower part of the shield tunnel segment;
C. assembling prefabricated walls or prefabricated columns on the cast-in-place base;
D. hoisting and assembling the prefabricated support plate, and mounting the prefabricated support plate on the prefabricated wall;
E. installing high-low-foot template trolleys on two sides of the prefabricated wall, ensuring the lateral stability of the template trolleys by utilizing connecting rods and embedded nuts in pipe pieces, and installing a cast-in-place node bottom die on the top of the template trolleys;
F. binding the cast-in-situ layer steel bar on the triangular shear bar of the prefabricated supporting plate, and bending two ends of the steel bar downwards at the position close to the inner arc surface of the duct piece;
G. the bar planting on the duct piece is bound with the cast-in-place layer bar and the prefabricated support plate extending bar;
H. pouring a cast-in-place layer and two end nodes above the prefabricated supporting plate, and reserving an anti-collision kerbstone mounting groove;
I. and after the strength of the cast-in-situ layer meets 80%, installing the anti-collision curbstone in the anti-collision curbstone installation groove.
2. The construction method of the tunnel precast structure according to claim 1, wherein: and D, transporting the support plates along the longitudinal direction of the tunnel according to the long edges because the width of the prefabricated support plates is larger than the clear distance between the base and the prefabricated wall on the two sides of the shield tunnel segment, hoisting the support plates to the upper part of the wall body by using a hoisting device to complete 90-degree rotation, and then installing the support plates on the wall body.
3. The construction method of the tunnel precast structure according to claim 2, wherein: and E, supporting one side of the high-low-foot template trolley on the base and one side of the high-low-foot template trolley on the duct piece, and ensuring the lateral stability of the template trolley through the connecting rod and the embedded nuts in the duct piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010620503.4A CN111927486A (en) | 2020-07-01 | 2020-07-01 | Tunnel prefabricated structure construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010620503.4A CN111927486A (en) | 2020-07-01 | 2020-07-01 | Tunnel prefabricated structure construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111927486A true CN111927486A (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010620503.4A Pending CN111927486A (en) | 2020-07-01 | 2020-07-01 | Tunnel prefabricated structure construction method |
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| Country | Link |
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| CN (1) | CN111927486A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417671A (en) * | 2021-08-06 | 2021-09-21 | 中交（广州）建设有限公司 | Construction method for quickly assembling prefabricated parts in shield tunnel |
| CN113503176A (en) * | 2021-08-06 | 2021-10-15 | 中交（广州）建设有限公司 | Integrated intelligent assembling trolley for prefabricated parts in tunnel |
| CN115163091A (en) * | 2022-06-23 | 2022-10-11 | 上海燃气工程设计研究有限公司 | Construction method of comprehensive utilization platform in ultra-long distance small-diameter tunnel |
| CN116044442A (en) * | 2023-03-31 | 2023-05-02 | 中建交通建设集团有限公司 | Butt joint section structure in shield ground and construction method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989622A (en) * | 2018-01-23 | 2018-05-04 | 上海隧道工程有限公司 | Tunnel internal double-decker precast assembly construction method |
| CN110374623A (en) * | 2019-08-07 | 2019-10-25 | 上海市机械施工集团有限公司 | Prefabricated platform and its installation method |
-
2020
- 2020-07-01 CN CN202010620503.4A patent/CN111927486A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989622A (en) * | 2018-01-23 | 2018-05-04 | 上海隧道工程有限公司 | Tunnel internal double-decker precast assembly construction method |
| CN110374623A (en) * | 2019-08-07 | 2019-10-25 | 上海市机械施工集团有限公司 | Prefabricated platform and its installation method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417671A (en) * | 2021-08-06 | 2021-09-21 | 中交（广州）建设有限公司 | Construction method for quickly assembling prefabricated parts in shield tunnel |
| CN113503176A (en) * | 2021-08-06 | 2021-10-15 | 中交（广州）建设有限公司 | Integrated intelligent assembling trolley for prefabricated parts in tunnel |
| CN115163091A (en) * | 2022-06-23 | 2022-10-11 | 上海燃气工程设计研究有限公司 | Construction method of comprehensive utilization platform in ultra-long distance small-diameter tunnel |
| CN116044442A (en) * | 2023-03-31 | 2023-05-02 | 中建交通建设集团有限公司 | Butt joint section structure in shield ground and construction method thereof |
| CN116044442B (en) * | 2023-03-31 | 2023-06-02 | 中建交通建设集团有限公司 | Butt joint section structure in shield ground and construction method thereof |
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