CN205503146U - Novel supporting construction of shallow tunnel suitable for city sensitizing range - Google Patents
Novel supporting construction of shallow tunnel suitable for city sensitizing range Download PDFInfo
- Publication number
- CN205503146U CN205503146U CN201620295849.0U CN201620295849U CN205503146U CN 205503146 U CN205503146 U CN 205503146U CN 201620295849 U CN201620295849 U CN 201620295849U CN 205503146 U CN205503146 U CN 205503146U
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- steel pipe
- tunnel
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Abstract
The utility model belongs to the technical field of tunnel and underground works, concretely relates to novel supporting construction of shallow tunnel suitable for city sensitizing range, include the advance support, preliminary bracing and the fabricated lining that follow the radial outside -in in tunnel and set gradually, the preliminary bracing includes along a plurality of steel pipe concrete arch framves of tunnel longitudinal separation setting that the concrete is built to shuttering pouring mould between the adjacent steel pipe concrete arch frame, steel pipe concrete arch frame fills early strength concrete by adjustable prestressing force steel pipe and forms, the utility model discloses can effectively solve in the shallow tunnel work progress of current city the ubiquitous earth's surface subside too big, warp heavy handled, percolating water, lining cutting fracture scheduling problem to guarantee that near tunnel earth's surface building, pipeline along the line and road traffic do not receive the influence of underground works construction.
Description
Technical field
This utility model belongs to tunnels and underground engineering technical field, and being specifically related to one, to be applicable to city quick
The shallow tunnel new supporting structure of sensillary area and construction method thereof.
Background technology
Along with the fast development of urban construction, various shallow buried and underground excavated engineering projects get more and more, as city underground,
Large-scale network etc..Existing shallow buried covered excavation engineering method improves proposition on the basis of New Austrian Tunneling Method, uses anchor
Spray supporting as preliminary bracing, owing to gunite concrete jetting thickness is limited, maximum gauge no more than
In 35cm and course of injection, springback capacity is bigger；Common shaped steel arch belongs to passive support, can only bear and enclose
The lax load of rock and can not actively carry and during arch construction, bolt connects difficulty or basic nothing
Method tethers and causes bow member to misplace, and grid steel frame can not individually carry owing to rigidity is less；Splash guard is easy
Reinforcing bar in the rough surface of injected concrete and two lining concrete punctures etc..The above
Shortcoming causes shallow tunnel to occur in that series of problems in work progress, such as: country rock is lax causes earth's surface
Settle excessive, preliminary bracing insufficient rigidity pressure from surrounding rock to be transferred to secondary lining and cause Lining cracks, seepage
Water etc..
Summary of the invention
The defect existed for prior art and deficiency, the purpose of this utility model is to provide one to be suitable for
Shallow tunnel new supporting structure and construction method thereof in sensitizing range, city, it is possible to effectively solve current city
The ground settlement generally existed during city's Shallow Tunnel Construction is excessive, deformation is difficult to control to, percolating water,
The problems such as Lining cracks, thus ensure surface buildings near tunnel, pipeline along the line and road traffic not
Affected by underground engineering construction.
For achieving the above object, this utility model is by the following technical solutions:
A kind of shallow tunnel new supporting structure being applicable to sensitizing range, city, including: along tunnel radially by
Advance support, preliminary bracing and the prefbricated tunnel lining set gradually outside to inside；Described preliminary bracing includes edge
Some concrete filled steel tube bow members of the longitudinally spaced setting in tunnel, shuttering between adjacent steel pipe concrete bow member
Cast form concrete；Described concrete filled steel tube bow member is hollow adjustable pre-stressed steel pipe perfusion by inside
Early strength concrete is formed.
Further, described adjustable pre-stressed steel pipe includes arch steel pipe and many pars infrasegmentalises steel pipe, arch steel
Preconditioning it is provided with, by telescopic joint between each pars infrasegmentalis steel pipe between pipe two ends and bottom steel pipe.
Further, described preconditioning includes the upper connection with some upper reinforcing bars arranged in up-down structure
Plate and the lower connecting plate with some lower reinforcing bars, described upper reinforcing bar is fixed with lower bar connecting respectively.
Further, arch steel pipe uses the light-walled rectangular pipe on the band edge of a wing, and anchor is reserved on the steel pipe edge of a wing, arch
Rod aperture applies arch prestressed anchor；Bottom steel pipe uses the light-walled rectangular pipe without the edge of a wing, arch springing position
The rectangular steel pipe put is reserved bolthole and is applied lock foot anchoring stock.
Further, described advance support uses that to arrange large-scale lead pipe grouting along arch, tunnel contour line pre-
Reinforce country rock；Super-front large pipe shed applies along tunnel circumference in the range of 120 ° of vault at tunnel tunnel face,
Described grouting serous fluid uses cement-silicate dual slurry.
Further, described prefbricated tunnel lining uses the prefabricated reinforced concrete section of jurisdiction of fissure of displacement splicing, prefabricated
Assembly it is bolted between reinforced concrete segment.
Further, between described prefabricated reinforced concrete section of jurisdiction, seaming position uses elastic rubber gasket
Seal waterproof.
Further, described preconditioning includes the upper connection with some upper reinforcing bars arranged in up-down structure
Plate and the lower connecting plate with some lower reinforcing bars；Applying preregulated step is: withstand upper company with jack
Fishplate bar and lower connecting plate, then operation jack changes the distance of upper and lower connecting plate, by upper after regulating
Reinforcing bar and lower reinforcement welding, withdraw jack.
Compared with prior art, this utility model has following useful technique effect: pass through steel tube concrete
Soil bow member active undertaking load, utilizes adjustable pre-stressed steel pipe can effectively prevent country rock from relaxing, strictly controls
Ground settlement；With form concrete substitute gunite concrete solve gunite concrete jetting thickness limited,
The problem of preliminary bracing insufficient rigidity；By using prefbricated tunnel lining, it is possible to effectively solve the construction stage with
And the problem of percolating water during later stage operation.
Further, by arranging preconditioning, to arch steel pipe Shi Hanzhang, make steel pipe active undertaking
Load, prevents country rock from relaxing, strictly controls ground settlement.
Further, close by arranging seaming position employing gum elastic between prefabricated reinforced concrete section of jurisdiction
Packing seals waterproof, cancels special waterproof layer, and waterproof effect is reliable, can effectively solve Tunnel Water Leakage
Problem；Section of jurisdiction batch production is prefabricated, reliable in quality, and construction speed is fast, and cost is low.
Accompanying drawing explanation
Fig. 1 is tunnel support structure schematic longitudinal section of the present utility model.
Fig. 2 is tunnel support structure I-I sectional view of the present utility model.
Fig. 3 is tunnel support structure II-II sectional view of the present utility model.
Fig. 4 is preconditioning schematic diagram.
Fig. 5 is steel tube section schematic diagram, and (a) is arch steel tube section, and (b) is the following steel tube section in arch.
Fig. 6 is method for tunnel construction schematic cross-sectional view of the present utility model.
Fig. 7 is method for tunnel construction schematic longitudinal section of the present utility model.
Wherein: 1 is super-front large pipe shed；2 is adjustable pre-stressed steel pipe, and 201 is rectangular steel pipe, and 202 are
The steel pipe edge of a wing；3 is sleeve pipe；4 is preconditioning, and 401 is upper junction plate, and 402 is lower connecting plate, 403
For jack, 404 is upper reinforcing bar, and 405 is lower reinforcing bar；5 is concrete perfusion, and 6 is prestressed anchor,
7 is lock foot anchoring stock, and 8 is form concrete, and 9 is prefabricated reinforced concrete section of jurisdiction；10 is that gum elastic is close
Packing.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail.
See Fig. 1-3, the shallow tunnel New Supporting being applicable to sensitizing range, city that this utility model provides
Structure, including the advance support that radially ecto-entad sets gradually along tunnel, preliminary bracing and assembled lining
Build；Described preliminary bracing includes some concrete filled steel tube bow members of longitudinally spaced setting, adjacent steel along tunnel
Between pipe concrete bow member, casting moulds builds concrete eight；Described concrete filled steel tube bow member by hollow-core construction can
Pre-stressed steel pipe perfusion early strength concrete is adjusted to be formed, hollow steel pipe light weight, easy construction, irrigate coagulation
The concrete filled steel tube formed after soil combines that steel strength is high, ductility is good and concrete crushing strength
High advantage, combinative structure has higher bearing capacity.Adjustable pre-stressed steel pipe 2 include arch steel pipe and
Many pars infrasegmentalises steel pipe, is provided with preconditioning 4, each pars infrasegmentalis steel between steel pipe two ends, arch and bottom steel pipe
Connected by sleeve pipe 3 between pipe, telescopic joint easy construction, simple.Seeing Fig. 5, arch steel pipe is adopted
With the light-walled rectangular pipe 201 on the band edge of a wing 202, the steel pipe edge of a wing, arch 202 is reserved bolthole and is applied arch
Prestressed anchor 6, the country rock surface that winged balsh duct occlusion excavation in arch is exposed, prestressed anchor enters one
Step anchoring steel pipe, reinforcing arch country rock, improve bearing capacity of the wall rock；Bottom steel pipe uses without the edge of a wing
Light-walled rectangular pipe, the rectangular steel pipe of arch springing position is reserved bolthole and is applied lock foot anchoring stock 7, lock foot anchoring stock
Arch springing steel pipe is anchored in country rock, arch integral sinking in the digging process that prevents from getting out of a predicament or an embarrassing situation.
See Fig. 4, described preconditioning 4 include arranging in up-down structure with some upper reinforcing bars 404
Upper junction plate 401 and the lower connecting plate 402 with some lower reinforcing bars 405, described upper reinforcing bar 404 is respectively
It is connected fixing with lower reinforcing bar 405.By preconditioning to arch steel pipe Shi Hanzhang, steel pipe is made actively to hold
Load load, prevents country rock from relaxing, strictly controls ground settlement.
Advance support uses before arranging super-front large pipe shed 1 slip casting pre-reinforcement face along arch, tunnel contour line
Side's country rock, improves self；Super-front large pipe shed 1 is 120 ° of scopes of vault at tunnel tunnel face
Interior applying along tunnel circumference, described grouting serous fluid uses cement-silicate dual slurry, and dual slurry has relatively
High calculus rate and faster rate of set, after advance support can Rapid Excavation, accelerating construction progress.
Described prefbricated tunnel lining uses the prefabricated reinforced concrete section of jurisdiction 9 of fissure of displacement splicing, precast reinforced coagulation
Soil section of jurisdiction can be produced in batches in batch production, and reliable in quality passes through bolt between prefabricated reinforced concrete section of jurisdiction 9
Connect assembly.Between described prefabricated reinforced concrete section of jurisdiction 9, seaming position uses elastic rubber gasket close
Seal waterproof, good water-proof effect, cancel special waterproof layer.
See Fig. 6,7, the construction method of new supporting structure that this utility model provides, by excavated section
Being divided into upper and lower step, upper and lower step faulting of slab ends excavates, and longitudinal separation controls at 3-5m, excavation of topping bar
Remaining core soil in advance, the staggered excavation of arranged on left and right sides of getting out of a predicament or an embarrassing situation, specifically include following steps:
1) along 120 °, arch, tunnel scope excavation contour line, super-front large pipe shed 1 is applied, and cementing-
Waterglass dual slurry pre-reinforcement country rock, forms advance support；
2) carry out topping bar under the protection of super-front large pipe shed 1 supporting I excavation and remaining core soil in advance II,
Core Soil can effectively reduce the advanced deformation of front of tunnel heading, and I each excavation drilling depth of topping bar is 1 times
Winged balsh pipe width, the spacing of the most adjustable pre-stressed steel pipe 2；Apply adjustable pre-stressed steel pipe 2: frame
The adjustable pre-stressed steel pipe 2 of I arch if topping bar, installs at adjustable pre-stressed steel pipe 2 two ends of arch
Preconditioning 4 Shi Hanzhang, preconditioning 4 include in up-down structure arrange with some upper reinforcing bars 404
Upper junction plate 401 and with the lower connecting plate 402 of some lower reinforcing bars 405；Apply the step of preconditioning 4
Suddenly it is: withstand upper junction plate 401 and lower connecting plate 402, then operation jack 403 with jack 403
Change the distance of upper and lower connecting plate, after regulating, upper reinforcing bar 404 and lower reinforcing bar 405 are welded, withdraw
Jack 403；By bolthole prestressed anchor pole 6 reserved on the steel pipe edge of a wing, arch 202, in advance should
Power anchor pole can anchor arch steel pipe further, reinforce arch country rock, improves bearing capacity of the wall rock；By
At arch springing, steel pipe is reserved bolthole and is installed lock foot anchoring stock 7, is anchored in country rock by arch springing steel pipe, prevents down
Arch integral sinking during bench excavation；Early strength concrete 5 shape is irrigated in adjustable pre-stressed steel pipe 2
Becoming concrete filled steel tube bow member, concrete filled steel tube has bigger plastic deformation ability and higher carrying
Power；Between adjustable pre-stressed steel pipe 2, hang pouring template early strength concrete form form concrete 8；
3) excavation central core soil II；
4) excavating left side III of getting out of a predicament or an embarrassing situation, excavation drilling depth controls at 1～2 times of adjustable pre-stressed steel pipe 2 every time
Spacing, then perform get out of a predicament or an embarrassing situation left side III part adjustable pre-stressed steel pipe 2, and with I part of topping bar
Adjustable pre-stressed steel pipe 2 connected by sleeve pipe 3；By injected hole reserved on adjustable pre-stressed steel pipe 2
Perfusion early strength concrete 5, hangs pouring template early strength concrete, forms mould between adjustable pre-stressed steel pipe 2
Build concrete eight；
5) excavating right side IV of getting out of a predicament or an embarrassing situation, construction procedure is with left side III of getting out of a predicament or an embarrassing situation；
6) treat that form concrete 8 reaches the dismountable template of design strength more than 80%, immediately following applying assembling
Formula lining cutting: assembled prefabricated reinforced concrete section of jurisdiction 9, contiguous prefabricated reinforced concrete segment 9 seaming position
The fissure of displacement connects, and seaming position pastes elastic rubber gasket in advance；Between prefabricated reinforced concrete section of jurisdiction 9
It is bolted.
Claims (7)
1. the shallow tunnel new supporting structure being applicable to sensitizing range, city, it is characterised in that include
Advance support, preliminary bracing and the prefbricated tunnel lining that radially ecto-entad sets gradually along tunnel；At the beginning of described
Phase supporting includes some concrete filled steel tube bow members of longitudinally spaced setting, adjacent concrete-filled steel tube arch along tunnel
Shuttering cast form concrete (8) between frame；Described concrete filled steel tube bow member by inside be hollow can
Pre-stressed steel pipe (2) perfusion early strength concrete (5) is adjusted to be formed.
The shallow tunnel new supporting structure being applicable to sensitizing range, city the most according to claim 1,
It is characterized in that, described adjustable pre-stressed steel pipe (2) includes arch steel pipe and many pars infrasegmentalises steel pipe, arch
Preconditioning (4) it is provided with, by sleeve pipe (3) between each pars infrasegmentalis steel pipe between steel pipe two ends and bottom steel pipe
Connect.
The shallow tunnel new supporting structure being applicable to sensitizing range, city the most according to claim 2,
It is characterized in that, described preconditioning (4) include in up-down structure arrange with some upper reinforcing bars (404)
Upper junction plate (401) and with the lower connecting plate (402) of some lower reinforcing bars (405), described upper steel
Muscle (404) is connected fixing respectively with lower reinforcing bar (405).
The shallow tunnel new supporting structure being applicable to sensitizing range, city the most according to claim 2,
It is characterized in that, arch steel pipe uses the light-walled rectangular pipe (201) on the band edge of a wing (202), arch steel pipe
The reserved bolthole in the edge of a wing (202) applies arch prestressed anchor (6)；Bottom steel pipe uses without the edge of a wing
Light-walled rectangular pipe (201), the reserved bolthole of the rectangular steel pipe (201) of arch springing position applies lock foot anchoring stock
(7)。
The shallow tunnel new supporting structure being applicable to sensitizing range, city the most according to claim 1,
It is characterized in that, described advance support uses and arranges super-front large pipe shed (1) slip casting along arch, tunnel contour line
Pre-reinforcement country rock；Super-front large pipe shed (1) is circumferential along tunnel in the range of 120 ° of vault at tunnel tunnel face
Applying, described grouting serous fluid uses cement-silicate dual slurry.
The shallow tunnel new supporting structure being applicable to sensitizing range, city the most according to claim 1,
It is characterized in that, described prefbricated tunnel lining uses the prefabricated reinforced concrete section of jurisdiction (9) of fissure of displacement splicing, in advance
Reinforced concrete segment processed is bolted assembly between (9).
The shallow tunnel new supporting structure being applicable to sensitizing range, city the most according to claim 6,
It is characterized in that, between described prefabricated reinforced concrete section of jurisdiction (9), seaming position uses gum elastic to seal
Pad seals waterproof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620295849.0U CN205503146U (en) | 2016-04-11 | 2016-04-11 | Novel supporting construction of shallow tunnel suitable for city sensitizing range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620295849.0U CN205503146U (en) | 2016-04-11 | 2016-04-11 | Novel supporting construction of shallow tunnel suitable for city sensitizing range |
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| Publication Number | Publication Date |
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| CN205503146U true CN205503146U (en) | 2016-08-24 |
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| CN201620295849.0U Expired - Fee Related CN205503146U (en) | 2016-04-11 | 2016-04-11 | Novel supporting construction of shallow tunnel suitable for city sensitizing range |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781582A (en) * | 2016-04-11 | 2016-07-20 | 长安大学 | Novel shallow-buried tunnel support structure applicable to urban sensitive areas and construction method of novel shallow-buried tunnel support structure applicable to urban sensitive areas |
| CN108756935A (en) * | 2018-06-01 | 2018-11-06 | 招商局重庆交通科研设计院有限公司 | Run disease tunnel assembled treatment structures and its construction method |
| CN109611116A (en) * | 2019-01-28 | 2019-04-12 | 中铁第四勘察设计院集团有限公司 | A kind of the pipe-plate lining structure and its construction method of suitable for surrounding rock large deformation |
| CN110259485A (en) * | 2019-07-19 | 2019-09-20 | 长安大学 | A kind of loess tunnel support system and its installation method |
| CN110397450A (en) * | 2019-07-26 | 2019-11-01 | 浙江交工集团股份有限公司 | A kind of assembled connection method of lining concrete in tunnel structure reinforcing bars |
| CN111022084A (en) * | 2019-11-19 | 2020-04-17 | 长安大学 | Large-section loess tunnel excavation primary support arch frame single truss and method |
| CN111219200A (en) * | 2020-03-18 | 2020-06-02 | 长安大学 | Buckling-restrained assembled tunnel combined structure supporting system and construction method thereof |
| CN111425216A (en) * | 2020-04-09 | 2020-07-17 | 山东建筑大学 | Composite supporting structure, construction system and method |
| CN111022084B (en) * | 2019-11-19 | 2024-04-26 | 长安大学 | Single arch truss of primary support for excavating large-section loess tunnel and method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781582A (en) * | 2016-04-11 | 2016-07-20 | 长安大学 | Novel shallow-buried tunnel support structure applicable to urban sensitive areas and construction method of novel shallow-buried tunnel support structure applicable to urban sensitive areas |
| CN108756935A (en) * | 2018-06-01 | 2018-11-06 | 招商局重庆交通科研设计院有限公司 | Run disease tunnel assembled treatment structures and its construction method |
| CN109611116A (en) * | 2019-01-28 | 2019-04-12 | 中铁第四勘察设计院集团有限公司 | A kind of the pipe-plate lining structure and its construction method of suitable for surrounding rock large deformation |
| CN110259485A (en) * | 2019-07-19 | 2019-09-20 | 长安大学 | A kind of loess tunnel support system and its installation method |
| CN110397450A (en) * | 2019-07-26 | 2019-11-01 | 浙江交工集团股份有限公司 | A kind of assembled connection method of lining concrete in tunnel structure reinforcing bars |
| CN111022084A (en) * | 2019-11-19 | 2020-04-17 | 长安大学 | Large-section loess tunnel excavation primary support arch frame single truss and method |
| CN111022084B (en) * | 2019-11-19 | 2024-04-26 | 长安大学 | Single arch truss of primary support for excavating large-section loess tunnel and method |
| CN111219200A (en) * | 2020-03-18 | 2020-06-02 | 长安大学 | Buckling-restrained assembled tunnel combined structure supporting system and construction method thereof |
| CN111219200B (en) * | 2020-03-18 | 2024-04-26 | 长安大学 | Buckling-restrained assembled tunnel combined structure supporting system and construction method thereof |
| CN111425216A (en) * | 2020-04-09 | 2020-07-17 | 山东建筑大学 | Composite supporting structure, construction system and method |
| CN111425216B (en) * | 2020-04-09 | 2021-07-30 | 山东建筑大学 | Composite supporting structure, construction system and method |
| US11739639B2 (en) | 2020-04-09 | 2023-08-29 | Shandong Jianzhu University | Composite support structure, construction system, and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20180411 |