CN110005429A - The box top board structure of city tunnel bifurcation mouth - Google Patents
The box top board structure of city tunnel bifurcation mouth Download PDFInfo
- Publication number
- CN110005429A CN110005429A CN201910428130.8A CN201910428130A CN110005429A CN 110005429 A CN110005429 A CN 110005429A CN 201910428130 A CN201910428130 A CN 201910428130A CN 110005429 A CN110005429 A CN 110005429A
- Authority
- CN
- China
- Prior art keywords
- tunnel
- mouth
- box top
- top board
- lower plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
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- 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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- 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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of box top board structures of city tunnel bifurcation mouth, including tunnel roof, the tunnel roof includes the upper plate being arranged at intervals between tunnel sidewalls and lower plate, the upper plate, cavity one end that lower plate and tunnel sidewalls surround is provided with main mouth end panel, the other end forms fork mouth structure by the branch mouth end panel in side bar and outside, the cavity inside is divided into multiple chambers being arranged in the vertical direction by web, the upper plate of each chamber is provided with demoulding hole, the lower plate of each chamber is all made of waterproof mortar and looks for the gradient and offer ventilating drainage hole.The present invention is small convenient for design, difficulty of construction, can reduce structure roof self weight, reduces structure roof thickness of earth covering, and then can reduce the load that structure is subject to, increases the span of city tunnel section；When prestressing force is arranged, the regular reinforcement dosage needed for crack-resisting design control can be not only reduced, it is also ensured that structure roof does not crack, and then improves the durability of structure roof.
Description
Technical field
The present invention relates to municipal works city tunnel structure technique of design and construction fields, more particularly, to a kind of city tunnel
The box top board structure of road bifurcation mouth.
Background technique
With the development of urban tunnel construction, functional requirement is higher and higher.In most cases, as long as city tunnel is full
The unidirectional transport need of foot, but also need to consider traffic diverging and the linking of multiple directions sometimes, at this point, complicated tunnel
Road bifurcation mouth form is just come into being.Under normal conditions, the city tunnel structure section span at bifurcation mouth can gradual change increasing
Greatly, flat shape is complicated and irregular, and design and construction is very cumbersome.Currently, city tunnel bifurcation mouth top plate mostly uses plate
Structure type, structure design are controlled by crack-resisting design, and top plate thickness is generally large, quantity of reinforcement is also very big, thus economy compared with
Difference；Further, when tunnel structure top plate buried depth is larger, thickness of earth covering can not be effectively reduced.If be designed to
Arch top board structure or folded plate top board structure, then top plate shape is both asymmetric or irregular, and structure type is unreasonable, and construction is more
Add inconvenience.
Summary of the invention
To solve the above-mentioned problems, the present invention provide a kind of structure overall stiffness is big, cracking resistance is strong, span ability is big,
Stress performance is good, endurance quality is good and can reduce engineering material dosage, reduce structure roof thickness of earth covering, city easy for construction
The box top board structure of tunnel bifurcation mouth, specific technical solution are as follows:
The box top board structure of city tunnel bifurcation mouth of the present invention, including tunnel roof, between the tunnel roof includes
Every the upper plate and lower plate being arranged between tunnel sidewalls, cavity one end that the upper plate, lower plate and tunnel sidewalls surround is provided with
Main mouth end panel, the other end form fork mouth structure by the branch mouth end panel in side bar and outside, and the cavity inside passes through abdomen
Plate is divided into multiple chambers being arranged in the vertical direction, and the upper plate of each chamber is provided with demoulding hole, the lower plate of each chamber
Waterproof mortar is all made of to look for the gradient and offer ventilating drainage hole.
The upper plate and lower plate are the solid panel of reinforced concrete structure, with a thickness of the 1/8 ~ 1/ of adjacent web spacing
12。
The main mouth end panel and branch mouth end panel are the solid slab of the reinforced concrete structure with armpit angle.
The web with a thickness of the 1/4 ~ 1/8 of adjacent web spacing.
The lower plate of each chamber is all made of waterproof mortar and looks for the unidirectional slope of the draining of the gradient 0.3% ~ 0.5%.
It is provided with prestress pipe spacer bar on the web, wears bellows duct and steel strand wires steel beam.
The box top board structure of city tunnel bifurcation mouth provided by the invention, has the advantages that
1, the present invention can increase the span of city tunnel section, when prestressing force is especially arranged, can increase city to a greater extent
The span of city's tunnel cross-section；
2, the present invention can reduce structure roof self weight, reduce structure roof thickness of earth covering, and then can reduce the load that structure is subject to；
3, the present invention can reduce the dosage of structure roof concrete, reinforcing bar；
4, when present invention setting prestressing force, the regular reinforcement dosage needed for crack-resisting design control can not only be reduced, it is also ensured that
Structure roof does not crack, and then improves the durability of structure roof；
5, the present invention is small convenient for design, difficulty of construction.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of tunnel bifurcation mouth described in the embodiment of the present invention.
Fig. 2 is the A-A sectional view (only box top plate portion) in Fig. 1.
Fig. 3 is the B-B profile (only box top plate portion) in Fig. 1.
Fig. 4 is the C-C sectional view in Fig. 1.
Fig. 5 is the D-D sectional view in Fig. 1.
Fig. 6 is the structural schematic diagram of lower plate portions in Fig. 1.
Specific embodiment
The present invention is suitable for the top board structure design and construction at city tunnel complex node, is come below with specific embodiment
Illustrate the box top board structure of city tunnel bifurcation mouth of the present invention.
The single hole city tunnel with bifurcation mouth as shown in figures 1 to 6, by bottom plate 10, side wall 1 and case of the present invention
Type top plate composition.Specifically, above-mentioned tunnel box top plate includes spaced upper plate 2 and lower plate 3, upper plate 2, lower plate 3 and tunnel
Road side wall 1 is surrounded along the tunnel cavity that longitudinally extension and cross section are gradually increased；Main mouth is arranged in the lesser one end of cavity cross-sectional profile
Side bar 5 is arranged in end panel 4.1, the other end, and according to design requirement, two branch mouth end panels are extended on the outside of side bar 5
4.2,4.3, cavity inside then passes through web 6 and is divided into multiple chamber S being arranged in the vertical direction.The upper plate 2 of each chamber S is reserved
Demoulding hole 7, the lower plate 3 of each chamber S are all made of waterproof mortar and look for the unidirectional slope of the draining of the gradient 0.3% ~ 0.5%, and in each case
The four corners of room S lower plate 3 reserve ventilating drainage hole 8 using pvc pipe.Generally, upper plate 2, lower plate 3 and web 6 are that reinforcing bar is mixed
The solid panel of Xtah Crude Clay structure, and web 6 is with a thickness of the 1/4 ~ 1/8 of adjacent web spacing, upper plate 2 and lower plate 3 with a thickness of phase
The spacing of the 1/8 ~ 1/12 of adjacent web spacing, upper plate 2 and lower plate 3 is preferably greater than 1.7m；Main mouth end panel 4.1, branch mouth end panel
4.2,4.3 be the armored concrete solid slab with armpit angle, and thickness performs in favor of structure integral waterproofing as principle, often
Deformation joint 4.4 is provided between a end panel and adjacent segment.In order to further increase the durability of structure roof, knot is reduced
Concrete, the amount of reinforcement of structure top plate, a greater degree of span for increasing city tunnel section, can be arranged on web 6 and answer in advance
Power along the pre-buried bellows duct of tunnel lateral direction that is, on web 6, and penetrates steel strand wires steel beam 9 in bellows duct.
City tunnel bifurcation mouth with above-mentioned box top board structure mainly includes the following steps: in construction
The first step, excavation pit perform the waterproof layer of bed course and tunnel floor 10；
Second step, the reinforcing bar of binding tunnel floor 10, part tunnel sidewalls 1 and bifurcation mouth sleeper 11, pours tunnel floor 10
Concrete pours the concrete of tunnel sidewalls 1 and bifurcation mouth sleeper 11 to the first longitudinal direction water for being reserved in 10 or more tunnel floor
At flat construction joint, first longitudinal direction horizontal construction joint is usually at tunnel floor 10 or the above 300mm ~ 500mm in armpit angle；
Third step continues the reinforcing bar for binding tunnel sidewalls 1 and bifurcation mouth sleeper 11, pours tunnel sidewalls 1 and bifurcation mouth sleeper 11
Concrete to being reserved at box top plate second longitudinal direction horizontal construction joint below, second longitudinal direction horizontal construction joint usually for
Below box top plate or armpit angle at 300mm ~ 500mm；
4th step installs 3 bed die of lower plate of box top plate, binds lower plate 3, web 6, side bar 5 and the main mouth end of box top plate
The reinforcing bar of plate 4.1, branch mouth end panel 4.2,4.3 is bound using the pvc pipe of diameter 50mm and is used on the framework of steel reinforcement of lower plate 3
Reserved ventilating drainage hole 8；
5th step installs the inner side template of each chamber S, pours lower plate 3, web 6, side bar 5 and main mouth end panel 4.1, branch mouth
The concrete of end panel 4.2,4.3；After the concrete of lower plate 3 reaches design strength, using waterproof mortar look for the gradient 0.3% ~
The unidirectional slope of 0.5% draining, direction are consistent with tunnel lateral direction drainage direction；
6th step installs 2 bed die of upper plate of box top plate, binds 2 reinforcing bar of upper plate, reserves demoulding hole 7；On the inside of to chamber S
When template is removed, the size in demoulding hole 7 will pass in and out convenient for construction personnel；
7th step pours 2 concrete of upper plate；
8th step, removes the inner side template of chamber S, then restores 7 reinforcing bar of demoulding hole and pour closely knit, then performs tunnel sidewalls 1
And structurally waterproof layer, the progress earthing backfill of box top plate.
It is pre-buried along tunnel in web 6 usually after the 4th step is constructed when needing to apply prestressing force on web 6
The bellows duct that road is laterally arranged, and steel strand wires steel beam 9 is penetrated in bellows duct；Later when the coagulation that the 7th step pours
After soil reaches design strength, tensioning simultaneously anchors the steel strand wires steel beam 9 in web 6, and " highway bridge and culvert is applied using existing industry standard
Work technical specification " slurries of Special grouting material as defined in (JTG/T F50) or Special grouting agent configuration carry out bellows duct
Mud jacking, notch should sealing off and covering anchorage as early as possible after the completion of mud jacking.
Claims (6)
1. a kind of box top board structure of city tunnel bifurcation mouth, including tunnel roof, it is characterised in that: the tunnel roof packet
The upper plate being arranged at intervals between tunnel sidewalls and lower plate are included, cavity one end that the upper plate, lower plate and tunnel sidewalls surround is set
It is equipped with main mouth end panel, the other end forms fork mouth structure by the branch mouth end panel in side bar and outside, and the cavity inside is logical
It crosses web and is divided into multiple chambers being arranged in the vertical direction, the upper plate of each chamber is provided with demoulding hole, each chamber
Lower plate is all made of waterproof mortar and looks for the gradient and offer ventilating drainage hole.
2. the box top board structure of city tunnel bifurcation mouth according to claim 1, it is characterised in that: the upper plate is under
Plate is the solid panel of reinforced concrete structure, with a thickness of the 1/8 ~ 1/12 of adjacent web spacing.
3. the box top board structure of city tunnel bifurcation mouth according to claim 1, it is characterised in that: the main mouth end
Plate and branch mouth end panel are the solid slab of the reinforced concrete structure with armpit angle.
4. the box top board structure of city tunnel bifurcation mouth according to claim 1, it is characterised in that: the thickness of the web
Degree is the 1/4 ~ 1/8 of adjacent web spacing.
5. the box top board structure of city tunnel bifurcation mouth according to claim 1, it is characterised in that: each chamber
Lower plate be all made of waterproof mortar and look for the unidirectional slope of the draining of the gradient 0.3% ~ 0.5%.
6. the box top board structure of city tunnel bifurcation mouth according to claim 1, it is characterised in that: set on the web
It is equipped with prestress pipe spacer bar, wears bellows duct and steel strand wires steel beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910428130.8A CN110005429A (en) | 2019-05-22 | 2019-05-22 | The box top board structure of city tunnel bifurcation mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910428130.8A CN110005429A (en) | 2019-05-22 | 2019-05-22 | The box top board structure of city tunnel bifurcation mouth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110005429A true CN110005429A (en) | 2019-07-12 |
Family
ID=67177582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910428130.8A Pending CN110005429A (en) | 2019-05-22 | 2019-05-22 | The box top board structure of city tunnel bifurcation mouth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110005429A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734442A (en) * | 2020-05-15 | 2020-10-02 | 江苏瑞沃建设集团有限公司 | Box roof structure of urban tunnel branch mouth |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4123485A (en) * | 1977-04-20 | 1978-10-31 | Dyckerhoff & Widmann Aktiengesellschaft | Stage construction of an elevated box girder and roadway structure |
| JP2011001784A (en) * | 2009-06-20 | 2011-01-06 | Ohbayashi Corp | Method of constructing underground structure |
| CN105221160A (en) * | 2015-10-10 | 2016-01-06 | 上海市政工程设计研究总院（集团）有限公司 | A kind of vertical fork arrangement of staggered floor tunnel |
| CN106638324A (en) * | 2016-12-30 | 2017-05-10 | 河南省交通规划设计研究院股份有限公司 | Construction method for ultra-high-performance concrete corrugated steel web composite box girder bridge |
| CN108678011A (en) * | 2018-06-07 | 2018-10-19 | 深圳市市政设计研究院有限公司 | A kind of high hydraulic pressure of seabed depth earthing secretly buries tunnel structure across open cut greatly |
| CN208105008U (en) * | 2018-04-20 | 2018-11-16 | 中交一公局公路勘察设计院有限公司 | A kind of urban viaduct prestress steel bundle arrangement structure |
| CN209875164U (en) * | 2019-05-22 | 2019-12-31 | 河南省交通规划设计研究院股份有限公司 | Box-type top plate structure of urban tunnel branch |
-
2019
- 2019-05-22 CN CN201910428130.8A patent/CN110005429A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4123485A (en) * | 1977-04-20 | 1978-10-31 | Dyckerhoff & Widmann Aktiengesellschaft | Stage construction of an elevated box girder and roadway structure |
| JP2011001784A (en) * | 2009-06-20 | 2011-01-06 | Ohbayashi Corp | Method of constructing underground structure |
| CN105221160A (en) * | 2015-10-10 | 2016-01-06 | 上海市政工程设计研究总院（集团）有限公司 | A kind of vertical fork arrangement of staggered floor tunnel |
| CN106638324A (en) * | 2016-12-30 | 2017-05-10 | 河南省交通规划设计研究院股份有限公司 | Construction method for ultra-high-performance concrete corrugated steel web composite box girder bridge |
| CN208105008U (en) * | 2018-04-20 | 2018-11-16 | 中交一公局公路勘察设计院有限公司 | A kind of urban viaduct prestress steel bundle arrangement structure |
| CN108678011A (en) * | 2018-06-07 | 2018-10-19 | 深圳市市政设计研究院有限公司 | A kind of high hydraulic pressure of seabed depth earthing secretly buries tunnel structure across open cut greatly |
| CN209875164U (en) * | 2019-05-22 | 2019-12-31 | 河南省交通规划设计研究院股份有限公司 | Box-type top plate structure of urban tunnel branch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734442A (en) * | 2020-05-15 | 2020-10-02 | 江苏瑞沃建设集团有限公司 | Box roof structure of urban tunnel branch mouth |
| CN111734442B (en) * | 2020-05-15 | 2022-06-28 | 江苏瑞沃建设集团有限公司 | Box roof structure of urban tunnel branch mouth |
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