CN105673035A - Prefabricated shield node tunnel under condition of shield intersection and small spacing and construction method - Google Patents
Prefabricated shield node tunnel under condition of shield intersection and small spacing and construction method Download PDFInfo
- Publication number
- CN105673035A CN105673035A CN201610047504.8A CN201610047504A CN105673035A CN 105673035 A CN105673035 A CN 105673035A CN 201610047504 A CN201610047504 A CN 201610047504A CN 105673035 A CN105673035 A CN 105673035A
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- China
- Prior art keywords
- prefabricated
- tunnel
- shield
- shield structure
- side wall
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Classifications
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- 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
- 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 under the condition of shield intersection and a small spacing, and a construction method. The prefabricated shield node tunnel is especially suitable for complicated construction situations of shield intersection and small-spacing shield. 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 under the condition of the line intersection and the small line spacing 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, it is particularly useful for shield structure to cross and shield construction method in Small Distance situation, it is specially a kind of shield structure and crosses and the prefabricated tunnel of shield structure node and constructional method during Small Distance.
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 shield structure circuit crosses, Special zone Small Distance shield structure situation 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 Small Distance unavoidably, cross situation when two shield tunnels of a subway line tunnel. Being exactly that direct two shield structures are closely constructed at present, its shortcoming existed is that risk and interference are very big.
Summary of the invention
It is an object of the invention to provide a kind of shield structure to cross and Small Distance shield structure node precast assembly tunnel and constructional method 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 that shield structure crosses at circuit, construction risk when tunneling in circuit Small Distance situation.
In order to realize above object, the present invention adopts following technical proposals.
A kind of shield structure crosses and Small Distance shield structure node precast assembly tunnel, comprises two prefabricated tunnels of next-door neighbour, and the prefabricated tunnel of every bar comprises rear segment of curve part, straight length portion, front segment of curve part respectively, and each several part joint bolt connects; 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, the position being connected with side wall at base plate is provided with chamfering, and the straight length portion in two prefabricated tunnels is closely connected, and at side wall position, bolt connects.
The feature of the present invention also has:
The described prefabricated tunnel of every bar respectively entirety build shaping.
For prefabricated, transport, lifting conveniently, every bar tunnel segment is prefabricated, and namely every bar tunnel is bolted by the prefabricated tunnel construction sections of multistage and forms; It is prefabricated that described straight length portion can be divided into 4 sections.
Prefabricated tunnel straight length portion connects at side wall position bolt, strengthens globality.
Prefabricated tunnel each several part length is grown when causing template construction, transport, lifting inconvenience excessively, multistage can be divided to carry out prefabricated, connecting portion prepared screw-bolt hole, with bolts after hoisted in position.
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.
A kind of shield structure crosses and Small Distance shield structure node precast assembly method for tunnel construction, comprises the following steps:
(1) outside workyard, prefabricated tunnel construction sections is made
The prefabrication step of prefabricated tunnel construction sections is: the template making prefabricated tunnel construction sections, assembling reinforcement cage, carries out bolt connecting portion prepared screw-bolt hole at prefabricated tunnel construction sections side wall, longitudinally each section of joint prepared screw-bolt hole, placing concrete, and maintenance is removed and touched plate;
(2) foundation pit excavation and bracing
(1) excavation pit is to the prefabricated tunnel back-plane design degree of depth, and carries 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 sections is installed
(1) transport, lift the prefabricated tunnel construction sections of straight length portion to specified location;
(2) straight length portion prefabricated tunnel construction sections side wall position bolt connects;
(3) after transport, lifting, segment of curve part and the front prefabricated tunnel construction sections of segment of curve part are to specified location;
(4) prefabricated to segment of curve and straight-line segment tunnel construction sections bolt is connected;
(5) banket in prefabricated tunnel construction sections, compacting;
(4) pit backfill, recovers road surface
After the transport of prefabricated tunnel construction sections, splicing operation complete, pit backfill, recovers road surface;
(5) shield driving, forms left shield tunnel, right shield tunnel.
The useful effect of the present invention is:
1, adopting said method carries out the construction in shield structure node tunnel, has effectively evaded that shield structure crosses at circuit, construction risk when tunneling in circuit Small Distance situation, 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 precast assembly tunnel, structure is simple, effectively achieves shield structure and crosses the tunnelling problem with Small Distance shield structure node, and this prefabricated tunnel segment is prefabricated, conveniently realizes it and connects and construction.
In a word, two shield tunnels, by burying prefabricated tunnel 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 that embodiment 1 shield structure crosses prefabricated tunnel orthographic plan;
Fig. 2 is that shield structure crosses prefabricated tunnel straight length portion vertical planning drawing;
Fig. 3 is that shield structure crosses prefabricated tunnel straight length portion side wall bolt interface chart;
Fig. 4 is that shield structure crosses prefabricated tunnel precast block figure;
In figure, 1 is segment of curve behind left prefabricated tunnel;2 is left prefabricated tunnel straight-line segment; 3 is segment of curve before left prefabricated tunnel; 4 is segment of curve behind right prefabricated tunnel; 5 is right prefabricated tunnel straight-line segment; 6 is segment of curve before right prefabricated tunnel; 7 is left shield tunnel; 8 is right shield tunnel; 9 is bolt; 10 is top board; 11 is base plate; 12 is side wall, 13-chamfering, 14-top board tenon, 15-side wall tongue-and-groove, 16-side wall tenon, 17-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 crosses and Small Distance shield structure node precast assembly tunnel, it comprises two prefabricated tunnels of next-door neighbour, the i.e. prefabricated tunnel in left prefabricated tunnel and the right side, the prefabricated tunnel of every bar comprises rear segment of curve part, straight length portion, front segment of curve part respectively, is namely followed successively by segment of curve 1 behind left prefabricated tunnel; Left prefabricated tunnel straight-line segment 2; Segment of curve 3 before left prefabricated tunnel; Segment of curve 4 behind right prefabricated tunnel; Right prefabricated tunnel straight-line segment 5; Segment of curve 6 before right prefabricated tunnel; Each several part joint bolt 9 connects; Described prefabricated tunnel each several part entirety is built shaping, the side wall 12 that described prefabricated tunnel comprises top board 10, base plate 11 and is all connected with top board and base plate, it is provided with chamfering 13 at the position that top board is connected with side wall, it is provided with chamfering 13 at the position that base plate is connected with side wall, article two, the straight length portion in prefabricated tunnel is closely connected, connects at side wall position bolt 9.
Prefabricated tunnel length is grown when causing template construction, transport, lifting inconvenience excessively, and every bar tunnel portions can be prefabricated respectively, and connecting portion prepared screw-bolt hole adopts bolt 9 to connect after hoisted in position. Namely every bar tunnel is connected to form by bolt 4 by the prefabricated tunnel construction sections of multistage; It is prefabricated that described straight length portion can be divided into 4 sections; Prefabricated tunnel straight length portion 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 14 and side wall tongue-and-groove 15, with reason, base plate also realizes being connected with side wall tenon 16 mode of joggle by base plate tongue-and-groove 17 with side wall docking site.
Embodiment 2
A kind of shield structure crosses and Small Distance shield structure node precast assembly method for tunnel construction, comprises the following steps:
(1) outside workyard, prefabricated tunnel construction sections is made
The prefabrication step of prefabricated tunnel construction sections is: the template making prefabricated tunnel construction sections, assembling reinforcement cage, carries out bolt connecting portion prepared screw-bolt hole at prefabricated tunnel construction sections side wall, longitudinally each section of joint prepared screw-bolt hole, placing concrete, and maintenance is removed and touched plate;
(2) foundation pit excavation and bracing
(1) excavation pit is to the prefabricated tunnel back-plane design degree of depth, and carries 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 sections is installed
(1) transport, lift the prefabricated tunnel construction sections of straight length portion to specified location;
(2) straight length portion prefabricated tunnel construction sections side wall position bolt connects;
(3) after transport, lifting, segment of curve part and the front prefabricated tunnel construction sections of segment of curve part are to specified location;
(4) prefabricated to segment of curve and straight-line segment tunnel construction sections bolt is connected;
(5) banket in prefabricated tunnel construction sections, compacting;
(4) pit backfill, recovers road surface
After the transport of prefabricated tunnel construction sections, splicing operation complete, pit backfill, recovers road surface;
(5) shield driving, forms left shield tunnel 7, right shield tunnel 8.
Claims (6)
1. shield structure crosses and a Small Distance shield structure node precast assembly tunnel, comprises two prefabricated tunnels of next-door neighbour, and the prefabricated tunnel of every bar comprises rear segment of curve part, straight length portion, front segment of curve part respectively, and each several part joint bolt connects; 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, the position being connected with side wall at base plate is provided with chamfering, and the straight length portion in two prefabricated tunnels is closely connected, and at side wall position, bolt connects.
2. shield structure according to claim 1 crosses and Small Distance shield structure node precast assembly tunnel, it is characterised in that, the described prefabricated tunnel of every bar respectively entirety build shaping.
3. shield structure according to claim 1 crosses and Small Distance shield structure node precast assembly tunnel, 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; It is prefabricated that described straight length portion can be divided into 4 sections.
4. shield structure according to claim 1 crosses and Small Distance shield structure node precast assembly tunnel, it is characterised in that, prefabricated tunnel straight length portion connects at side wall position bolt.
5. shield structure according to claim 1 crosses and Small Distance shield structure node precast assembly tunnel, it is characterized in that, described top board, base plate, side wall precast block, top board and side wall are connected to become entirety by tenon and tongue-and-groove, and base plate also realizes being connected by the mode of joggle with side wall.
6. shield structure crosses and a Small Distance shield structure node precast assembly method for tunnel construction, comprises the following steps:
(1) outside workyard, prefabricated tunnel construction sections is made
The prefabrication step of prefabricated tunnel construction sections is: the template making prefabricated tunnel construction sections, assembling reinforcement cage, carries out bolt connecting portion prepared screw-bolt hole at prefabricated tunnel construction sections side wall, longitudinally each section of joint prepared screw-bolt hole, placing concrete, and maintenance is removed and touched plate;
(2) foundation pit excavation and bracing
(1) excavation pit is to the prefabricated tunnel back-plane design degree of depth, and carries 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 sections is installed
(1) transport, lift the prefabricated tunnel construction sections of straight length portion to specified location;
(2) straight length portion prefabricated tunnel construction sections side wall position bolt connects;
(3) after transport, lifting, segment of curve part and the front prefabricated tunnel construction sections of segment of curve part are to specified location;
(4) prefabricated to segment of curve and straight-line segment tunnel construction sections bolt is connected;
(5) banket in prefabricated tunnel construction sections, compacting;
(4) pit backfill, recovers road surface
After the transport of prefabricated tunnel construction sections, splicing operation complete, pit backfill, recovers road surface;
(5) shield driving, forms left shield tunnel, right shield tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610047504.8A CN105673035B (en) | 2016-01-25 | 2016-01-25 | Shield crosses and the prefabricated tunnel of shield node and construction method during small spacing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610047504.8A CN105673035B (en) | 2016-01-25 | 2016-01-25 | Shield crosses and the prefabricated tunnel of shield node and construction method during small spacing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105673035A true CN105673035A (en) | 2016-06-15 |
| CN105673035B CN105673035B (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610047504.8A Active CN105673035B (en) | 2016-01-25 | 2016-01-25 | Shield crosses and the prefabricated tunnel of shield node and construction method during small spacing |
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| CN (1) | CN105673035B (en) |
Citations (7)
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|---|---|---|---|---|
| KR100556976B1 (en) * | 2003-08-12 | 2006-03-03 | 김기홍 | New Messer Shield engineering method |
| CN101338677A (en) * | 2008-08-08 | 2009-01-07 | 上海市隧道工程轨道交通设计研究院 | Synchronous construction method for shield method tunnel |
| CN104153389A (en) * | 2014-08-11 | 2014-11-19 | 中铁建大桥工程局集团第六工程有限公司 | Construction method for prefabricated assembly type subway station |
| CN104674625A (en) * | 2015-03-24 | 2015-06-03 | 招商局重庆交通科研设计院有限公司 | Underway structure and construction method thereof |
| CN104762993A (en) * | 2015-02-11 | 2015-07-08 | 中国铁建大桥工程局集团有限公司 | Splicing type construction method of urban lake-passing tunnel |
| CN105089669A (en) * | 2015-09-07 | 2015-11-25 | 济南轨道交通集团有限公司 | Underground station constructed by prefabricated parts and construction method thereof |
| CN105113535A (en) * | 2015-06-26 | 2015-12-02 | 上海市政工程设计研究总院（集团）有限公司 | Prefabricated assembled tunnel joint structure and construction method thereof |
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2016
- 2016-01-25 CN CN201610047504.8A patent/CN105673035B/en active Active
Patent Citations (7)
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|---|---|---|---|---|
| KR100556976B1 (en) * | 2003-08-12 | 2006-03-03 | 김기홍 | New Messer Shield engineering method |
| CN101338677A (en) * | 2008-08-08 | 2009-01-07 | 上海市隧道工程轨道交通设计研究院 | Synchronous construction method for shield method tunnel |
| CN104153389A (en) * | 2014-08-11 | 2014-11-19 | 中铁建大桥工程局集团第六工程有限公司 | Construction method for prefabricated assembly type subway station |
| CN104762993A (en) * | 2015-02-11 | 2015-07-08 | 中国铁建大桥工程局集团有限公司 | Splicing type construction method of urban lake-passing tunnel |
| CN104674625A (en) * | 2015-03-24 | 2015-06-03 | 招商局重庆交通科研设计院有限公司 | Underway structure and construction method thereof |
| CN105113535A (en) * | 2015-06-26 | 2015-12-02 | 上海市政工程设计研究总院（集团）有限公司 | Prefabricated assembled tunnel joint structure and construction method thereof |
| CN105089669A (en) * | 2015-09-07 | 2015-11-25 | 济南轨道交通集团有限公司 | Underground station constructed by prefabricated parts and construction method thereof |
Non-Patent Citations (1)
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| 董勇: "TBM在重庆地铁施工中的风险分析及安全管理", 《都市快轨交通》 * |
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| CN105673035B (en) | 2017-11-17 |
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