CN110409497A - Construction method suitable for water-bed shallow embedding prefabrication and assembly construction tunnel - Google Patents
Construction method suitable for water-bed shallow embedding prefabrication and assembly construction tunnel Download PDFInfo
- Publication number
- CN110409497A CN110409497A CN201910545233.2A CN201910545233A CN110409497A CN 110409497 A CN110409497 A CN 110409497A CN 201910545233 A CN201910545233 A CN 201910545233A CN 110409497 A CN110409497 A CN 110409497A
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- tunnel
- water
- construction
- prefabrication
- shallow embedding
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/063—Tunnels submerged into, or built in, open water
- E02D29/07—Tunnels or shuttering therefor preconstructed as a whole or continuously made, and moved into place on the water-bed, e.g. into a preformed trench
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of construction methods suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, comprising the following steps: Step 1: cofferdam is arranged in submerged tunnel one end to be onstructed, the excavation that draws water, which is formed, originates foundation pit, and assembled equipment assembly will be tunneled in it and is completed；Step 2: with the walking for tunneling assembled equipment, the synchronous soil for excavating front end of anterior shield；And the prefabricated tunnel structure of synchronous hoisting is put into from the open top end in open supporting cabin, and is pushed out to predeterminated position, and the prefabricated tunnel structure in two pieces of front and back is connected；Step 3: repeating step 2, it is advanced into after the tunnel other end receives foundation pit and hangs out, complete the laying of all prefabricated tunnel structures.In present invention construction, similar mobile cofferdam function and mobile pattern foundation pit supporting structure function are provided, Temporary Cofferdam and permanent pattern foundation pit supporting structure is not necessarily to, significantly saves project cost, while can be reduced construction time waters area occupied and time, reduce underwater soil dredging amount.
Description
Technical field
The present invention relates to underwater prefabricated tunnel structure assembling fields.It is more particularly related to which one kind is suitable for
The construction method in water-bed shallow embedding prefabrication and assembly construction tunnel.
Background technique
The method of construction of submerged tunnel has in the world at present: when edpth of tunnel is deeper, mainly using drilling and blasting method and shield
Method；When edpth of tunnel is shallower, method can only be built using immersed tunnelling method and weir；
So-called immersed tunnelling method is that successively sinking is extremely excavated by prefabricated entire tunnel tube coupling (general length 70-200 meters)
Water-bed foundation trench in carry out sinking docking, then backfill, which faces that underwater dredging mud amount is big, environment influences that big, immersed tube is floating
Fortune requires high, high cost disadvantage to fairway depth, such as port Zhuhai and Macao bridge seabed tunnel.The so-called weir method of building is that construction is faced on the water
When coffering, drain water in cofferdam and carry out deep foundation pit construction, then carry out tunnel structure cast-in-place construction, the engineering method in foundation pit
With the construction time is long, occupancy water surface area is big, environment influences big, a large amount of Temporary Cofferdam and foundation pit supporting project is at high cost
The disadvantages of (typically constitute from engineering direct cost 40% or so)；As Wuhan East Lake tunnel, Wuxi Taihu Lake tunnel are all made of weir and build method
Construction.
Method and immersed tunnelling method disadvantage are built in view of underwater shallow tunnel weir and civil construction industry greatly develops prefabrication and assembly construction
With the historical background of do mechanization operation, it is badly in need of a kind of novel construction method that can be realized do mechanization operation, prefabrication and assembly constructionization construction, thus
It can accelerate progress, reduce influence of the over-water construction to environment, project cost is greatly reduced.
Summary of the invention
In order to achieve the goal above, the present invention provides a kind of construction party suitable for water-bed shallow embedding prefabrication and assembly construction tunnel
Method, comprising the following steps:
Step 1: setting up cofferdam in submerged tunnel one end to be onstructed, the excavation that draws water, which is formed, originates foundation pit, and pick is completed in it
It is assembled into assembled equipment；
The assembled equipment of the driving includes anterior shield and backing mutually hinged, wherein the anterior shield front end, which is equipped with, to be used for
The cutter hub of digging；The backing top upwardly extends and opening, and open end is higher than the water surface in waters to be onstructed, is formed for throwing
Put the open supporting cabin of the prefabricated tunnel structure of lifting；The anterior shield rear end is equipped with incremental launching device；The backing rear end part
It opens wide, forms a push mouth passed through for prefabricated tunnel structure；
Set spiral conveying tube in the assembled equipment of the driving, one end towards the anterior shield cutter hub digging position, inhale
The soil for taking anterior shield pick to dig, the other end are in communication with the outside by the open end in open supporting cabin, the soil of absorption are delivered to outer
Portion；Wherein, the spiral conveying tube is spliced by two pieces points of spiral conveying tube inclinations；
Step 2: with the walking for tunneling assembled equipment, the synchronous soil for excavating front end of anterior shield；And the prefabricated tunnel of synchronous hoisting
Road structure is held in the backing from the open top end investment in the open supporting cabin；Then the incremental launching device pushing tow is put
The prefabricated tunnel structure set pushes out from the push mouth of the backing to predeterminated position, and by the prefabricated tunnel knot of this part
Structure and upper one piece of prefabricated tunnel structure connect, and in its bottom and side synchronous grouting, the underwater backfilling of earthwork of structural top；
Step 3: repeating said steps two, until tunneling assembled equipment runs to the reception positioned at the submerged tunnel other end
Foundation pit completes the laying of all prefabricated tunnel structures.
Preferably, the described construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, in the step 1, In
Originating to be provided in foundation pit promotes that tunnels assembled equipment to originate reaction frame, provides to tunnel assembled equipment and originates counter-force.
Preferably, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, the incremental launching device are
Hydraulic cylinder or hydraulic stem.
Preferably, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, the driving assembly are set
Standby sealed bottom, and during push, seamless seal can be achieved at the push mouth of the backing between prefabricated tunnel structure
Contact, in order to underwater construction.
Preferably, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, the step 1 are also wrapped
It includes: assigning interim building enclosure towards the one end in waters originating in foundation pit；
The step 2 further include: before tunneling assembled equipment walking, remove the interim building enclosure.
Preferably, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, before step 2, if
When submerged tunnel bottom foundation soil is soft layer, consolidation process is carried out to soft de- ground, guarantees that ground meets equipment construction
Requirement for bearing capacity.
Preferably, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, the reception foundation pit
It is setting cofferdam, and draws water and excavate formation.
Preferably, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, the driving assembly are set
It is standby internal equipped with screw conveyor, the interior installation helical feed pipeline.
Preferably, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, the anterior shield is along width
The two sides in direction are vertically equipped with breast boards respectively.
Preferably, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, all prefabricated tunnel knots
Structure paving is laid with after splicing completion, and the both ends for being formed by tunnel are connected with the tunnel constructed on revetment respectively, forms one
The complete channel of item.
The present invention is include at least the following beneficial effects:
1, the present invention uses open cut tunneling construction, rather than the tunneling of traditional handicraft is tunneled, and project amount is smaller；
2, in the present invention, dregs is directly vertically sent to ground using screw conveyor by the way that backing top is open, is not taken up an area,
And it is simple to operate, cost is reduced, and traditional shield machine is to be transported by assembled molding to active well, then is vertically hung
It is transported to ground, is taken up a large area；
3, conventional tunnel construction is all to use Prefabricated Concrete section of jurisdiction or stage, but the present invention is by prefabricated profiled whole stage tunnel
Road (can also be fragment section of jurisdiction) is directly hung in shield machine by the opening on backing top, and the tunnel being completed with rear is assembled
Connection molding；
4, two sides are equipped with breast boards at the top of anterior shield, for the soil body at the top of supporting and retaining system shield body to ground (or mud face) two sides, therefore
Anterior shield is directly excavated to ground, and backing is backfilled to former mud face (ground) in tunnel assembly molding rear shell immediately；
5, added with counterweight on shield body inside panel, to overcome suffered buoyancy；
6, when carrying out prefabricated whole segment tunnel consolidation service under water, driving assembly equipment of the invention is similar to a shifting
Dynamic cofferdam structure can provide similar mobile cofferdam function and mobile pattern foundation pit supporting structure function, be not necessarily to Temporary Cofferdam and permanent foundation pit branch
Shield, significantly saves project cost, while can be reduced construction time waters area occupied and time, reduces underwater soil dredging amount；
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the sectional view of step 1 of the present invention construction signal；
Fig. 2 is the sectional view of step 2 of the present invention construction signal；
Fig. 3 is the sectional view of step 3 of the present invention construction signal；
Fig. 4 is the top view of step 1 of the present invention construction signal；
Fig. 5 is the top view of step 2 of the present invention construction signal；
Fig. 6 is the top view of step 3 of the present invention construction signal.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
It should be noted that experimental method described in following embodiments is unless otherwise specified conventional method, institute
Reagent and material are stated, unless otherwise specified, is commercially obtained；In the description of the present invention, term " transverse direction ", " vertical
To ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", the instructions such as "outside" side
Position or positional relationship are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description of the present invention and simplification of the description,
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, because
This is not considered as limiting the invention.
The present invention provides a kind of construction method suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, comprising the following steps:
If previous step, submerged tunnel bottom foundation soil are soft layer, consolidation process is carried out to soft de- ground, is protected
Card ground meets equipment construction requirement for bearing capacity；Rotary churning pile can be used herein or stirring grabs stake and carries out stiffening basic ground；
As shown in Figure 1 and Figure 4, it Step 1: setting up cofferdam 4 in submerged tunnel one end to be onstructed, draws water, formation originates base
Hole will tunnel assembled 1 assembly of equipment in it and complete；The assembled equipment 1 of the driving includes anterior shield 101 and backing mutually hinged
102, wherein 101 front end of anterior shield is equipped with the cutter hub for digging；102 top of backing upwardly extends and opening, and
Open end is higher than the water surface in waters to be onstructed, forms the open supporting cabin 103 of the prefabricated tunnel structure 2 for launching lifting；Institute
It states 101 rear end of anterior shield and incremental launching device is installed；102 rear end of backing is locally opened wide, and is formed one and is passed through for prefabricated tunnel structure 2
Push mouth；Set spiral conveying tube 3 in the assembled equipment 1 of the driving, one end towards the anterior shield 101 cutter hub digging position
It sets, draws the soil that the pick of anterior shield 201 is dug, the other end is in communication with the outside by the open end in open supporting cabin 103, by the mud of absorption
Soil is delivered to outside；Wherein, the spiral conveying tube 3 is spliced by two pieces points of spiral conveying tube inclinations；Such as Fig. 2 and Fig. 5 institute
Show, Step 2: with the walking for tunneling assembled equipment 1, the synchronous soil for excavating front end of anterior shield 101；And the prefabricated tunnel of synchronous hoisting
Road structure 2 is held in the backing 102 from the open top end investment in the open supporting cabin 103；Then the incremental launching device
The prefabricated tunnel structure 2 that pushing tow has been shelved pushes out from the push mouth of the backing 102 to predeterminated position, and by this part
Prefabricated tunnel structure 2 and upper one piece of prefabricated tunnel structure 2 connect；As shown in Figure 3 and Figure 6, Step 3: repeating said steps
Two, until tunneling assembled equipment 1 runs to the reception foundation pit 7 positioned at the submerged tunnel other end, complete all prefabricated tunnel structures
Laying；Wherein, all prefabricated tunnel structures 2 paving is laid with after splicing completes, be formed by the both ends in tunnel respectively with revetment
On the tunnel 6 constructed be connected, form a complete channel.
In one of embodiment, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel is described
In step 1, promotes that tunnels assembled equipment to originate reaction frame originating to be provided in foundation pit, provide the beginning to tunnel assembled equipment 1
Send out counter-force.
In one of embodiment, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel is described
Incremental launching device is hydraulic cylinder or hydraulic stem.
In one of embodiment, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel is described
1 sealed bottom of assembled equipment is tunneled, and during push, at the push mouth of the backing 102 between prefabricated tunnel structure 2
Seamless seal contact can be achieved, in order to underwater construction.
In one of embodiment, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel is described
Step 1 further include: assign interim building enclosure 5 towards the one end in waters originating in foundation pit；
The step 2 further include: before tunneling assembled equipment 1 and walking, remove the interim building enclosure 5.
In one of embodiment, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel is described
In step 2, after prefabricated tunnel structure 2 connects, toward its bottom and side synchronous grouting, and top synchronizes backfill.
In one of embodiment, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, in step
Before rapid two, if submerged tunnel bottom foundation soil is soft layer, consolidation process is carried out to soft de- ground, guarantees that ground is full
Sufficient equipment construction requirement for bearing capacity.
In one of embodiment, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel is described
Receiving foundation pit is also to set up cofferdam, and draw water to be formed.
In one of embodiment, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel is described
It tunnels inside assembled equipment and is equipped with screw conveyor, the interior installation helical feed pipeline.
In one of embodiment, the construction method for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel is described
The two sides of anterior shield in the width direction are vertically equipped with breast boards respectively, for supporting and retaining system shield body top to ground (or mud face) two sides
The soil body, therefore anterior shield is directly excavated to ground, and backing is backfilled to former mud face (ground) in tunnel assembly molding rear shell immediately.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (10)
1. a kind of construction method suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, which comprises the following steps:
Step 1: setting up cofferdam in submerged tunnel one end to be onstructed, the excavation that draws water, which is formed, originates foundation pit, and driving is completed in it and is spelled
Installing is standby assembled；
The assembled equipment of the driving includes anterior shield and backing mutually hinged, wherein the anterior shield front end is equipped with for digging
Cutter hub；The backing top upwardly extends and opening, and open end is higher than the water surface in waters to be onstructed, is formed and is hung for launching
The open supporting cabin of the prefabricated tunnel structure of dress；The anterior shield rear end is equipped with incremental launching device；The backing rear end is locally opened wide,
Form a push mouth passed through for prefabricated tunnel structure；
Set spiral conveying tube in the assembled equipment of the driving, one end towards the anterior shield cutter hub digging position, before absorption
The soil that shield pick is dug, the other end are in communication with the outside by the open end in open supporting cabin, and the soil of absorption is delivered to outside；Its
In, the spiral conveying tube is spliced by two pieces points of spiral conveying tube inclinations；
Step 2: with the walking for tunneling assembled equipment, the synchronous soil for excavating front end of anterior shield；And the prefabricated tunnel knot of synchronous hoisting
Structure is held in the backing from the open top end investment in the open supporting cabin；Then the incremental launching device pushing tow is shelved
Prefabricated tunnel structure, push out from the push mouth of the backing to predeterminated position, and by the prefabricated tunnel structure of this part and
Upper one piece of prefabricated tunnel structure connects, and in its bottom and side synchronous grouting, the underwater backfilling of earthwork of structural top；
Step 3: repeating said steps two, until tunneling assembled equipment runs to the reception foundation pit positioned at the submerged tunnel other end,
Complete the laying of all prefabricated tunnel structures.
2. the construction method as described in claim 1 for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, which is characterized in that described
In step 1, promotes that tunnels assembled equipment to originate reaction frame originating to be provided in foundation pit, provide the beginning to tunnel assembled equipment
Send out counter-force.
3. the construction method as described in claim 1 for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, which is characterized in that described
Incremental launching device is hydraulic cylinder or hydraulic stem.
4. the construction method as described in claim 1 for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, which is characterized in that described
Assembled device bottom sealing is tunneled, and during push, it can be real between prefabricated tunnel structure at the push mouth of the backing
Existing seamless seal contact, in order to underwater construction.
5. the construction method as described in claim 1 for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, which is characterized in that described
Step 1 further include: assign interim building enclosure towards the one end in waters originating in foundation pit；
The step 2 further include: before tunneling assembled equipment walking, remove the interim building enclosure.
6. the construction method as described in claim 1 for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, which is characterized in that in step
Before rapid two, if submerged tunnel bottom foundation soil is soft layer, consolidation process is carried out to soft de- ground, guarantees that ground is full
Sufficient equipment construction requirement for bearing capacity.
7. the construction method as described in claim 1 for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, which is characterized in that described
Receiving foundation pit is also setting cofferdam, and draws water and excavate formation.
8. the construction method as described in claim 1 for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, which is characterized in that described
It tunnels inside assembled equipment and is equipped with screw conveyor, the interior installation helical feed pipeline.
9. the construction method as described in claim 1 for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, which is characterized in that described
The two sides of anterior shield in the width direction are vertically equipped with breast boards respectively.
10. the construction method as described in claim 1 for being suitable for water-bed shallow embedding prefabrication and assembly construction tunnel, which is characterized in that institute
There is prefabricated tunnel structure paving to be laid with after splicing completes, be formed by the both ends in tunnel respectively with the tunnel phase constructed on revetment
Connection forms a complete channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910545233.2A CN110409497A (en) | 2019-06-21 | 2019-06-21 | Construction method suitable for water-bed shallow embedding prefabrication and assembly construction tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910545233.2A CN110409497A (en) | 2019-06-21 | 2019-06-21 | Construction method suitable for water-bed shallow embedding prefabrication and assembly construction tunnel |
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| CN110409497A true CN110409497A (en) | 2019-11-05 |
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| CN201910545233.2A Pending CN110409497A (en) | 2019-06-21 | 2019-06-21 | Construction method suitable for water-bed shallow embedding prefabrication and assembly construction tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882429A (en) * | 2021-10-08 | 2022-01-04 | 中铁工程装备集团有限公司 | Construction method and construction structure of underground structure |
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| JPH05332090A (en) * | 1992-05-29 | 1993-12-14 | Maeda Corp | Shield construction method |
| JP2003003503A (en) * | 2001-06-26 | 2003-01-08 | Ishikawajima Harima Heavy Ind Co Ltd | Underwater shield |
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| CN113882429A (en) * | 2021-10-08 | 2022-01-04 | 中铁工程装备集团有限公司 | Construction method and construction structure of underground structure |
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