CN105673036A - Prefabricated shield node tunnel during longitudinal shield crossing and construction method - Google Patents
Prefabricated shield node tunnel during longitudinal shield crossing and construction method Download PDFInfo
- Publication number
- CN105673036A CN105673036A CN201610047506.7A CN201610047506A CN105673036A CN 105673036 A CN105673036 A CN 105673036A CN 201610047506 A CN201610047506 A CN 201610047506A CN 105673036 A CN105673036 A CN 105673036A
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- China
- Prior art keywords
- tunnel
- prefabricated
- shield
- shield structure
- bolt
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/083—Methods or devices for joining adjacent concrete segments
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
Abstract
The invention relates to a prefabricated shield node tunnel during longitudinal shield crossing, and a construction method. The prefabricated shield node tunnel is especially suitable for a complicated construction situation of longitudinal shield crossing. A prefabricated shield node tunnel structure is embedded into a specified position and a shield is driven to pass through the prefabricated structure without excavation in the prefabricated structure when passing through the prefabricated structure. The construction of the shield node tunnel is carried out with the method, so that the construction risk of shield tunneling during longitudinal line crossing is effectively avoided.
Description
Technical field
The invention belongs to the technical field of tunnel structure, it is specifically related to the precast assembly novel texture in a kind of shield structure node tunnel, be particularly useful for shield structure pass through situation up and down under shielded construction, be specially the prefabricated tunnel of shield structure node and constructional method when a kind of shield structure passes through up and down.
Background technology
The urban traffic blocking to alleviating growing tension of setting up of City Underground Transportation system plays most important effect. In January, 2015, National Development and Reform Committee official approval Jinan City track traffic short-term construction planning, so far, the middle national expenditures time of more than 50 year allows all municipalities directly under the Central Government and Vico-provincial Cities all become attached to subway. Constantly perfect along with Urban Rail Transit, construction environment becomes day by day complicated. It is more and more that the situation that the interval tunnel of shield structure passes through up and down becomes, and shield structure very easily causes various security incident at above-mentioned complex condition driving, even no longer possesses shielded construction condition. Therefore, how to guarantee that the safe construction in shield structure node tunnel is worth causing concern.
Owing to earth's surface, underground building are intensive, shielded construction space is more and more narrower, occurs, when two shield tunnels of a subway line tunnel, the situation that shield structure passes through up and down unavoidably. Processing mode general at present for carrying out grouting and reinforcing to stratum between upper and lower tunnel, under alleviating (on) row constructing tunnel is on the impact in upper (lower) row tunnel, but the construction of newly built tunnels is inevitable on the impact of existing tunnel distortion, light then affect the train operation in existing tunnel, heavy then existing tunnel entirety can be caused to sink, cave in, cause serious accident.
Summary of the invention
It is an object of the invention to provide a kind of shield structure to pass through shield structure node precast assembly tunnel and constructional method up and down for above-mentioned Problems existing. Burying prefabricated shield structure node tunnel structure to specified location in advance, shield structure is through out-of-date, and in prefabricated structure, sky pushes away and crosses. Adopting said method carries out the construction in shield structure node tunnel, has effectively evaded construction risk when tunneling under shield structure passes through down situation on the line.
In order to realize above object, the present invention adopts following technical proposals.
A kind of shield structure passes through shield structure node precast assembly tunnel up and down, it is characterized in that, pass through up and down four shield tunnels are incorporated into a place, article four, shield tunnel is respectively independent prefabricated tunnel, the side wall that described prefabricated tunnel comprises top board, base plate and is all connected with top board and base plate, the position being connected with side wall at top board is provided with chamfering, and the position being connected with side wall at base plate is provided with chamfering, connects at side wall position bolt with height two tunnels;Base plate in tunnel, upper strata and the top board prepared screw-bolt hole in lower floor tunnel, it is overall for being connected in levels tunnel with bolt.
Article four, prefabricated tunnel is individually prefabricated.
The prefabricated tunnel of every bar respectively entirety build shaping.
Every bar prefabricated tunnel length is grown when causing template construction, transport, lifting inconvenience excessively, and sectional carries out prefabricated, connecting portion prepared screw-bolt hole, with bolts after hoisted in position, and namely every bar tunnel is bolted by the prefabricated tunnel construction sections of multistage and forms; Prefabricated tunnel connects at side wall position bolt, strengthens globality.
Preferably, for make prefabricated, transport, lift convenient, top board, base plate, side wall precast block, top board and side wall also can be connected to become entirety by tenon and tongue-and-groove by prefabricated tunnel, and base plate also realizes being connected by the mode of joggle with side wall.
Shield structure node precast assembly method for tunnel construction when a kind of shield structure passes through up and down, comprises the following steps:
(1) outside workyard, prefabricated tunnel is made
The prefabrication step in prefabricated tunnel is: the template making prefabricated tunnel, assembling reinforcement cage, bolt connecting portion prepared screw-bolt hole need to be carried out at prefabricated tunnel sidewalls, in top, the prefabricated tunnel roof of prefabricated tunnel base plate and lower section need to carry out bolt connecting portion prepared screw-bolt hole, placing concrete, maintenance, removes and touches plate;
(2) foundation pit excavation and bracing
(1) excavation pit to lower section the prefabricated tunnel back-plane design degree of depth, and carry out foundation pit stope support;
(2) cheat end compacting or carry out slip casting within the scope of 3-5 rice at the end, hole, carry out hole bottom stratum consolidation;
(3) prefabricated tunnel, construction lower section
(1) the prefabricated tunnel transporting, lifting lower section is to specified location;
(2) prefabricated tunnel sidewalls position bolt connects;
(4) Ji Keng part backfill
Pit backfill is prefabricated tunnel roof end face place to lower section, backfill soil compacting in base hole;
(5) prefabricated tunnel, construction top
(1) the prefabricated tunnel of transport, lifting top is to specified location, and the bolt hole that the bolt hole tunnel roof prefabricated with lower section making prefabricated tunnel, top base plate reserved is reserved aligns;
(2) prefabricated tunnel sidewalls position bolt connects;
(3) prefabricated tunnel, top base plate tunnel roof bolt prefabricated with lower section is connected;
(4) banket in prefabricated tunnel, compacting;
(6) pit backfill, recovers road surface
After upper and lower prefabricated tunnel transport, splicing operation complete, pit backfill, recovers road surface;
(7) shield driving, forms four shield tunnels, is followed successively by the right side of shield tunnel on the left of upper strata, upper strata on the left of shield tunnel, lower floor shield tunnel on the right side of shield tunnel, lower floor.
During construction, first excavate lower floor tunnel Ji Keng, by prefabricated for lower floor tunnel hoisted in position and side wall position joint bolt is installed and fixes, pit backfill to the prefabricated tunnel top of lower floor and after compacting, then by prefabricated for upper strata tunnel hoisted in position and side wall position joint bolt is installed and fixes. Subsequently, install lower floor's tunnel joint bolt, make four tunnels be connected to become entirety.
The useful effect of the present invention is:
1, adopt this structure to carry out the construction in shield structure node tunnel, effectively evaded construction risk when tunneling under shield structure passes through down situation on the line, effectively ensure that construction safety.
2, prefabricated shield structure node tunnel structure just prefabricated before arrival complete, bury in advance in place, during arrival directly inside configuration sky push away through, eliminate closely-spaced tunnel construction infection, while ensureing safety, greatly shorten again the duration.
3. this prefabricated tunnel structure is simple, it is possible to point situation is prefabricated, constructability and use.
In a word, pass through up and down four shield tunnels, by burying prefabricated structure in advance, are incorporated into a place by the present invention, it is achieved that " zero spacing " construction of narrow space shield tunnel, breaches space constraint.
Accompanying drawing explanation
Fig. 1 is prefabricated tunnel sidewalls bolt interface chart;
Fig. 2 is the prefabricated tunnel precast block figure of shield crossing;
Fig. 3 is shield crossing prefabricated tunnel orthographic plan;
Fig. 4 is vertical planning drawing before the prefabricated tunnel of shield crossing;
Fig. 5 is shield crossing prefabricated tunnel side elevational view;
Fig. 6 is shield crossing schematic three dimensional views.
In figure, 1-chamfering, 9 is bolt; 10 is top board; 11 is base plate; 12 is side wall; 13 is prefabricated tunnel on the left of upper strata; 14 is prefabricated tunnel on the right side of upper strata; 15 is prefabricated tunnel on the left of lower floor; 16 is prefabricated tunnel on the right side of lower floor; 17 is shield tunnel on the left of upper strata; 18 is shield tunnel on the right side of upper strata; 19 is shield tunnel on the left of lower floor; 20 is shield tunnel on the right side of lower floor, 21-top board tenon, 22-side wall tongue-and-groove, 23-side wall tenon, 24-base plate tongue-and-groove.
Embodiment
Below by specific embodiment, the technical scheme of the present invention is described in detail.
Embodiment 1
A kind of shield structure passes through shield structure node precast assembly tunnel up and down, pass through up and down four shield tunnels are incorporated into a place, article four, shield tunnel is respectively independent prefabricated tunnel, the side wall 12 that described prefabricated tunnel comprises top board 10, base plate 11 and is all connected with top board 10 and base plate 11, the position being connected with side wall 12 at top board 10 is provided with chamfering 1, the position being connected with side wall 12 at base plate 11 is provided with chamfering 1, connects at side wall position bolt 9 with height two tunnels; Base plate 11 in tunnel, upper strata and top board 10 prepared screw-bolt hole in lower floor tunnel, it is overall for being connected in levels tunnel with bolt 9, is namely followed successively by the left of upper strata that on the right side of prefabricated tunnel 13, upper strata prefabricated tunnel 14; Prefabricated tunnel 15 on the left of lower floor; Prefabricated tunnel 16 on the right side of lower floor; Form the shield structure node passed through up and down.
Article four, prefabricated tunnel is individually prefabricated.
The prefabricated tunnel of every bar respectively entirety build shaping.
Every bar prefabricated tunnel length is grown when causing template construction, transport, lifting inconvenience excessively, and sectional carries out prefabricated, connecting portion prepared screw-bolt hole, with bolts after hoisted in position, and namely every bar tunnel is bolted by the prefabricated tunnel of multistage and forms; Prefabricated tunnel connects at side wall position bolt 9, strengthens globality.
Preferably, for make prefabricated, transport, lift convenient, prefabricated tunnel also can by top board 10, base plate 11, side wall 12 precast block, top board and side wall docking site are connected to become entirety by top board tenon 21 and side wall tongue-and-groove 22, with reason, base plate also realizes being connected with side wall tenon 23 mode of joggle by base plate tongue-and-groove 24 with side wall docking site.
Embodiment 2
Shield structure node precast assembly method for tunnel construction when a kind of shield structure passes through up and down, comprises the following steps:
(1) outside workyard, prefabricated tunnel is made
The prefabrication step in prefabricated tunnel is: the template making prefabricated tunnel, assembling reinforcement cage, bolt connecting portion prepared screw-bolt hole need to be carried out at prefabricated tunnel sidewalls, in top, the prefabricated tunnel roof of prefabricated tunnel base plate and lower section need to carry out bolt connecting portion prepared screw-bolt hole, placing concrete, maintenance, removes and touches plate;
(2) foundation pit excavation and bracing
(1) excavation pit to lower section the prefabricated tunnel back-plane design degree of depth, and carry out foundation pit stope support;
(2) cheat end compacting or carry out slip casting within the scope of 3-5 rice at the end, hole, carry out hole bottom stratum consolidation;
(3) prefabricated tunnel, construction lower section
(1) the prefabricated tunnel transporting, lifting lower section is to specified location;
(2) prefabricated tunnel sidewalls position bolt connects;
(4) Ji Keng part backfill
Pit backfill is prefabricated tunnel roof end face place to lower section, backfill soil compacting in base hole;
(5) prefabricated tunnel, construction top
(1) the prefabricated tunnel of transport, lifting top is to specified location, and the bolt hole that the bolt hole tunnel roof prefabricated with lower section making prefabricated tunnel, top base plate reserved is reserved aligns;
(2) prefabricated tunnel sidewalls position bolt connects;
(3) prefabricated tunnel, top base plate tunnel roof bolt prefabricated with lower section is connected;
(4) banket in prefabricated tunnel, compacting;
(6) pit backfill, recovers road surface
After upper and lower prefabricated tunnel transport, splicing operation complete, pit backfill, recovers road surface;
(7) shield driving, forms four shield tunnels, is followed successively by the left of upper strata on the right side of shield tunnel 17, upper strata on the left of shield tunnel 18, lower floor shield tunnel 20 on the right side of shield tunnel 19, lower floor.
During construction, first excavate lower floor tunnel Ji Keng, by prefabricated for lower floor tunnel 15,16 hoisted in position and side wall position lateral connection bolt 9 is installed and fixes, pit backfill to lower floor top, prefabricated tunnel 15,16 and after compacting, then by prefabricated for upper strata tunnel 13,14 hoisted in position and side wall position lateral connection bolt 9 is installed and fixes. Subsequently, install lower floor's tunnel joint bolt 21, make four tunnels be connected to become entirety.
Claims (6)
1. a shield structure passes through shield structure node precast assembly tunnel up and down, it is characterized in that, pass through up and down four shield tunnels are incorporated into a place, article four, shield tunnel is respectively independent prefabricated tunnel, the side wall that described prefabricated tunnel comprises top board, base plate and is all connected with top board and base plate, the position being connected with side wall at top board is provided with chamfering, and the position being connected with side wall at base plate is provided with chamfering, connects at side wall position bolt with height two tunnels; Base plate in tunnel, upper strata and the top board prepared screw-bolt hole in lower floor tunnel, it is overall for being connected in levels tunnel with bolt.
2. shield structure according to claim 1 passes through shield structure node precast assembly tunnel up and down, it is characterised in that, four prefabricated tunnels are individually prefabricated.
3. shield structure according to claim 2 passes through shield structure node precast assembly tunnel up and down, it is characterised in that, the prefabricated tunnel of every bar respectively entirety build shaping.
4. shield structure according to claim 1 passes through shield structure node precast assembly tunnel up and down, it is characterised in that, every bar tunnel segment is prefabricated, and namely every bar tunnel is bolted by the prefabricated tunnel construction sections of multistage and forms; Connect at side wall position bolt with height two prefabricated tunnels.
5. shield structure according to claim 1 passes through shield structure node precast assembly tunnel up and down, it is characterized in that, top board, base plate, side wall precast block, top board and side wall are connected to become entirety by tenon and tongue-and-groove by prefabricated tunnel, and base plate also realizes being connected by the mode of joggle with side wall.
6. shield structure node precast assembly method for tunnel construction when shield structure passes through up and down, comprises the following steps:
(1) outside workyard, prefabricated tunnel is made
The prefabrication step in prefabricated tunnel is: the template making prefabricated tunnel, assembling reinforcement cage, bolt connecting portion prepared screw-bolt hole need to be carried out at prefabricated tunnel sidewalls, in top, the prefabricated tunnel roof of prefabricated tunnel base plate and lower section need to carry out bolt connecting portion prepared screw-bolt hole, placing concrete, maintenance, removes and touches plate;
(2) foundation pit excavation and bracing
(1) excavation pit to lower section the prefabricated tunnel back-plane design degree of depth, and carry out foundation pit stope support;
(2) cheat end compacting or carry out slip casting within the scope of 3-5 rice at the end, hole, carry out hole bottom stratum consolidation;
(3) prefabricated tunnel, construction lower section
(1) the prefabricated tunnel transporting, lifting lower section is to specified location;
(2) prefabricated tunnel sidewalls position bolt connects;
(4) Ji Keng part backfill
Pit backfill is prefabricated tunnel roof end face place to lower section, backfill soil compacting in base hole;
(5) prefabricated tunnel, construction top
(1) the prefabricated tunnel of transport, lifting top is to specified location, and the bolt hole that the bolt hole tunnel roof prefabricated with lower section making prefabricated tunnel, top base plate reserved is reserved aligns;
(2) prefabricated tunnel sidewalls position bolt connects;
(3) prefabricated tunnel, top base plate tunnel roof bolt prefabricated with lower section is connected;
(4) banket in prefabricated tunnel, compacting;
(6) pit backfill, recovers road surface
After upper and lower prefabricated tunnel transport, splicing operation complete, pit backfill, recovers road surface;
(7) shield driving, forms four shield tunnels, is followed successively by the right side of shield tunnel on the left of upper strata, upper strata on the left of shield tunnel, lower floor shield tunnel on the right side of shield tunnel, lower floor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610047506.7A CN105673036B (en) | 2016-01-25 | 2016-01-25 | The prefabricated tunnel of shield node and construction method when shield is passed through up and down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610047506.7A CN105673036B (en) | 2016-01-25 | 2016-01-25 | The prefabricated tunnel of shield node and construction method when shield is passed through up and down |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105673036A true CN105673036A (en) | 2016-06-15 |
| CN105673036B CN105673036B (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610047506.7A Active CN105673036B (en) | 2016-01-25 | 2016-01-25 | The prefabricated tunnel of shield node and construction method when shield is passed through up and down |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223969A (en) * | 2016-08-30 | 2016-12-14 | 中铁隧道勘测设计院有限公司 | One closely upper and lower overlap or shield tunnel construction method of closely intersecting |
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| JPH0988102A (en) * | 1995-09-20 | 1997-03-31 | Shimizu Corp | Method of constructing underground structure |
| CN1145437A (en) * | 1996-09-02 | 1997-03-19 | 闫瑞明 | Segmental prefabricating negative pressure sealing submarine tunnel prefabricated components and construction method thereof |
| JP2001220989A (en) * | 2000-02-09 | 2001-08-17 | Taisei Corp | Method for modifying concrete structure having hollow cross section |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106223969A (en) * | 2016-08-30 | 2016-12-14 | 中铁隧道勘测设计院有限公司 | One closely upper and lower overlap or shield tunnel construction method of closely intersecting |
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| Publication number | Publication date |
|---|---|
| CN105673036B (en) | 2017-11-17 |
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