CN105926678B - Immersed tube tunnel tube coupling method for dismounting - Google Patents
Immersed tube tunnel tube coupling method for dismounting Download PDFInfo
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- CN105926678B CN105926678B CN201610343063.6A CN201610343063A CN105926678B CN 105926678 B CN105926678 B CN 105926678B CN 201610343063 A CN201610343063 A CN 201610343063A CN 105926678 B CN105926678 B CN 105926678B
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- tube coupling
- tunnel
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- immersed
- dismounting
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- 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
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The present invention relates to immersed tube tunnel tube coupling method for dismounting, belong to hydraulic engineering technical field.There is presently no immersed tube tunnel demolition technique, so discarded immersed tube tunnel can not be removed, existing on marine environment influences, and the present invention has filled up this technological gap.The present invention includes the preparation process before construction, removes tunnel both ends tube coupling step and removes tunnel normal reach tube coupling step.The present invention is used for the dismounting of immersed tube tunnel.
Description
Technical field
The present invention relates to immersed tube tunnel tube coupling method for dismounting, belong to hydraulic engineering technical field.
Background technology
More early for the mounting technique origin of immersed tube, the experiment first of world's immersed tube tunnel technology was entered in 1810 in London
OK, waterproof problem fails to solve.Detroit ,U.S.A chunnel is the submerged tunnel that First is used for communications and transportation, in
Built up using immersed tube technology within 1910, indicate the successful birth of immersed tunnelling method.It is more that the U.S. builds tunnel in bay, due to bay
The depth of water be generally higher than inland river, using box hat or clad steel shell structure (box hat is generally circular in cross section), consider to be better than from loading angle
Rectangle.China's immersed tube tunnel technology is started late, but is quickly grown.In the early 1960s, once carrying out immersed tube in Shanghai
The research of tunneling technique, and built up in 1976 in Shanghai Jinshan petrochemical industry project first Application immersed tunnelling method under First sewer
Tunnel.China Hongkong has built up the urban road seabed tunnel across Victoria Harbour in 1972.
For immersed tube demolition technique at present in the world also without the research of the technology, the underwater demolition of especially large-scale immersed tube
Construction technology, also report that the dismounting for underwater large-scale component is directly hung using crane ship more without the technology of correlation both at home and abroad
The method risen, the implementation of this method needs large-scale equipment, low construction efficiency, risk big, and is unfavorable for energy-conserving and environment-protective.
The content of the invention
It is an object of the invention to solve drawbacks described above existing for prior art, it is proposed that a kind of immersed tube tunnel tube coupling is removed
Method, it, which has, removes efficiency high, removes the characteristics of effect is good.
The present invention is realized using following technical scheme：A kind of immersed tube tunnel tube coupling method for dismounting, including before construction
Preparation process, remove tunnel both ends tube coupling step and remove tunnel normal reach tube coupling step.
Preparation process before construction, including protruding parts built-in fitting in tunnel is removed, waterstop is removed, is installed in tunnel
Help floating material, the junction installation thrustor between the tube coupling in tunnel.
Tunnel both ends tube coupling step is removed, including thrust section in end is removed, thrust section in end is excavated region and poured water, by tunnel
Help floating material to be connected with aerating device in the tube coupling of end, the lifting rope of crane gear is connected with tube coupling, by the pipe of thrustor
Line is connected with control system, to helping floating material to inflate, opens thrustor, after tunnel both ends tube coupling and the disengaging of remaining tube coupling,
Start crane gear, tube coupling is emerged.
Tunnel normal reach tube coupling step is removed, including excavates the backfill layer of normal reach, by helping in tunnel normal reach tube coupling
Floating material is connected with aerating device, and the lifting rope of crane gear is connected with tube coupling, and the pipeline of thrustor and control system are connected
Connect, to helping floating material to inflate, open thrustor, after the normal reach tube coupling of dismounting departs from remaining tube coupling, started and reseted
It is standby, tube coupling is emerged.
Preferably, thrustor is jack.
Preferably, the step of thrust section in end is removed includes excavating end thrust section part, and the foundation ditch of excavation is entered
Row slope retaining, certain length is cut off into thrust section part, the part cut off clearly is gone out into construction area.
Preferably, panel wall support pattern or bolt-spary supports are included to the mode of the foundation ditch progress slope retaining of excavation
Mode.
Preferably, the step of lifting rope of crane gear being connected with tube coupling includes tube coupling base foundation part to wash away
Go out space, tube coupling bottom will be run through from the lifting rope of crane gear drop down, lifting rope is connected with the suspension hook on crane gear.
Preferably, when removing tunnel both ends tube coupling, buoyancy tank is provided with the both sides of the tube coupling at tunnel both ends.
Preferably, when removing tunnel normal reach tube coupling, in normal reach tunnel, the both sides of tube coupling are provided with buoyancy tank.
The beneficial effects of the invention are as follows：
One：The present invention can lead to too small amount of equipment and manual security quickly removes immersed tube thrust section, and tube coupling is removed
Multiple stages are divided into, being divided into multiple stage merogenesis by large-scale immersed tube tunnel removes, safe and efficient.
Two：The present invention by air bag help construction method that floating and lifting is combined can steadily, quickly and safely by tunneltron
Section is removed, energy-saving consumption-reducing, is effectively floated immersed tube as lifting gravity by the use of the buoyancy of water.
Brief description of the drawings
Thrust section in Fig. 1 ends excavates area schematic；
Fig. 2 immersed tube tunnels remove schematic cross-sectional view；
Fig. 3 immersed tube tunnel demolishing process schematic diagrames；
In figure：1 thrust section removes 2 immersed tube joining section of part, 3 marine sections 4 excavation buoyancy tanks of region 5GINA waterstops 6
7 crane gears 8 help floating material 9 to remove the blotter 11 of tube coupling 10 and help the floating controlling cable of 12 lifting rope of material installation position 13
Tube coupling is not removed with loading line 14.
Embodiment
With reference to specific embodiment, the present invention will be further described.
The overall construction thinking of immersed tube tunnel tube coupling is described below, and when immersed tube tunnel tube coupling is removed, first carries out first section tube coupling
(i.e. tunnel both ends tube coupling) is removed, and then carries out the dismounting of normal reach tube coupling (tube coupling in addition to both ends).The dismounting of tube coupling is adopted
With the construction method of overall floating, tube coupling completely can be transported to designated area from seabed floating rear dragging.Tube coupling floating passes through
Air bag or buoyancy material are installed in immersed tube piping lane, buoyancy is provided by inflating, realization helps floating construction, and (lifting is refuted in top by side
Equipment) provide and hang power and sling immersed tube, hang out and the dry string adjustment of tube coupling is refuted into fixation after 0.1~0.3m with side after the water surface.Pass through
Tugboat hauls immersed tube to specified location, then refutes crane gear by tube coupling sinking sinking to designated area by side.Before construction
Need to do homework, including remove protruding parts built-in fitting in tunnel, remove waterstop, installed in tunnel and help floating material,
Junction installation thrustor between tube coupling in tunnel, carries out immersed tube thrust section and FS final spice is removed, carry out immersed tube
The shear connector of tunnel inner tube internode is removed, prestressing force discharges, road surface (ballast concrete) slot and other processing between tube coupling
Measure, it is ensured that the construction of the next step can be smoothed out.
The first section Demolition Scheme flow of immersed tube tunnel tube coupling is as follows：Head section tube coupling dismounting orders selection → preparation of construction → end
Thrust section dismounting → thrust section excavates region construction → tube coupling of pouring water and helps floating apparatus pipeline and lifting rope connection → tube coupling floating → pipe
Section haul saves tube coupling Demolition Construction to designated area → completion is first.
The first each stage for saving dismounting is elaborated below, head section tube coupling dismounting orders are chosen, immersed tube head section tube couplings
The selection of dismounting, the first is to remove head section tube couplings to select, in immersed tube middle part, first among dismounting after tube coupling, then to carry out just
Chang Guanjie dismounting, but the pressure that this method construction is eliminated between tube coupling is extremely difficult, and occur when removing first section compared with
The release of big pressure, is unfavorable for Construction control, therefore do not use this method.Second is removed the tube coupling at both ends as head sections
Tube coupling, after this method is the fixation thrust section tube coupling for removing end, then carries out normal reach tube coupling dismounting, needed when this method is constructed
Certain earthwork is excavated, pushing tow pressure is carried out after pouring water and is slowly discharged, construction can be control effectively, therefore first section pipe
Tube coupling of the dismounting selection of section at both ends.
Preparation of construction, before tube coupling dismounting is carried out, closure construction is live first, carries out the shearing of immersed tube tunnel inner tube internode
Key is removed, prestressing force release, road surface (ballast concrete) between tube coupling slot, in tunnel protruding parts built-in fitting remove and its
His treatment measures, reach the condition of installation floating aid system, while floating aid system and pushing tow system are attached in tube coupling and reserved
Go out pipeline and inflatable interface.
End thrust section Demolition Construction, when in end, tube coupling is removed, closure construction scene, while will be by immersed tube thrust first
Section part excavated, while to excavation pit carry out slope retaining, can by the way of panel wall or bolt-spary supports, specifically with
Actual geological conditions determines.Immersed tube tunnel thrust section typically uses cast-in-place concrete structure, after the completion of Support of Foundation Pit Excavation,
Certain length is cut off into thrust section part under dry operating condition, pipeline section is cleared out of by construction area by land loop wheel machine or other equipment
Domain so that certain space is left in tube coupling end, is constructed beneficial to the floating of follow-up tube coupling.
Thrust section is excavated region and poured water construction, after the completion for the treatment of that thrust section is removed, opening pattern foundation pit supporting structure part so that excavation area
Domain and sea UNICOM so that tube coupling is all placed in water, now because thrust section has left space, immersed tube tube coupling when mounted
Between compress sealing material (GINA) caused by pressure can pour into gradual release with seawater, be finally reached balance.
Tube coupling helps floating apparatus pipeline and lifting rope to connect, and entering underwater progress floating aid system by Divers, (air bag is floating
Dead-wood material) pipeline connection, floating aid system is installed in immersed tube piping lane, by fixed component floating material or air bag will be helped to be stuck in tube coupling
Upper fixation, the pipeline of floating aid system are drawn from one end, lead to tube coupling end by loading line and control circuit, and reserve
Docking port, after tackling system positioning, the pipeline on hoisting equipment and control piper and loading line are existed by submerged operation
Underwater rapid abutting joint, is then debugged.The connection of lifting rope, immersed tube base foundation part is washed away by giant so that
Certain space is gone out on foundation for laid pipe, then lifting rope under pressure of washing by water run through tube coupling bottom, then by lifting rope and
Upper hooks connect.Immersed tube thrustor uses jack, pacifies 5 sets of jack in Construction in Preparatory Stage (before i.e. immersed tube is poured water)
Mounted in often saving the junction of tube coupling and reserving pipeline, now jack hydraulic pipeline is connected under water by diver.
Immersed tube floating, after the completion of all preparations, airbag aeration is carried out first, there is provided upward buoyancy so that tube coupling
Negative buoyancy force reaches about 6% immersed tube tube coupling weight under water.It is then turned on thrustor so that immersed tube and tube coupling to be removed depart from about
50cm.Now start tackling system, dismounting immersed tube is slowly risen floating to the water surface.
Tube coupling is hauled to designated area, after tube coupling floating water outlet, tube coupling is refuted with side and is fixed, passes through tugboat transportation by driving
To designated area, it is necessary to which what is proposed is that transportation by driving navigation channel needs to reach transportation by driving condition in advance.
Tube coupling Demolition Construction is completed, stationary rope is removed after reaching designated area, by the slow sinking of tube coupling to designated area,
Complete tube coupling Demolition Construction.Can designated area nearby dig pit bury immersed tube, can also transportation by driving to designated area recycle.
Immersed tube tunnel normal reach tube coupling Demolition Scheme flow is as follows：Tube coupling method for dismounting selection → preparation of construction → backfill layer
Excavation → ship is in place → and tube coupling helps floating apparatus pipeline and lifting rope connection → tube coupling floating → tube coupling is hauled to designated area → complete
Into tube coupling Demolition Construction.
The each stage removed below to normal reach tube coupling elaborates, and tube coupling method for dismounting is chosen, and is helped by filling
The method construction of floating material, it is concretely comprised the following steps, and is helped floating material by all being installed in immersed tube piping lane in advance, is helped floating material
It is preferred that air bag, reserves good pipeline, buoyancy is provided by being inflated after underwater connecting pipeline, realization helps floating construction, and top is refuted by side
Offer hangs power and slings immersed tube, and after the adjustment dry string of immersed tube tube coupling reaches requirement, the tube coupling side of being fixed on is refuted, will be heavy by tugboat
Pipe is hauled to specified location, slow sinking tube coupling to designated area, and this method construction risk is low, low cost, speed of application are fast,
So carry out normal reach tube coupling Demolition Construction using this method.
Preparation of construction, before head section tube couplings are removed, the built-in fitting in tunnel is all removed, and Ω waterstops are torn open
Remove so that flatness reaches the condition of installation air bag inside immersed tube, and the equipment of the needs such as floating gasbag, disengaging jack is pacified
Position is attached to, reserves pipeline, air bag can be connected also by way of overall parallel connection using segmented；Before normal tube coupling is removed,
The matters such as reserved pipeline, immersed tube suspender belt, navigation channel warning are carried out first, reach the requirement of normal reach immersed tube dismounting.
Backfill layer to excavate, the state after installing with reference to immersed tube tunnel, dismounting process is divided into top backfill layer and opened from top to bottom
Dig, both sides backfill layer excavation, elimination effect is determined by measurement and control instrument after the completion of excavation, meets to carry out next step work after requiring
Sequence, that excavates use is equipped for the equipment such as Grab, haul ship.
Ship is in place, after the completion of layer to be backfilled excavates, will just refute and carries out accurate coordinates positioning by GPS or dipper system.
Floating aid system pipeline connects, and entering underwater floating aid system (air bag the helps floating) pipeline that carries out by Divers connects；
Immersed tube base foundation part is washed away by giant so that certain space is gone out on foundation for laid pipe, then lifting rope exists
Cause to run through tube coupling bottom under bath pressure, be then connected lifting rope with upper hooks；Immersed tube thrustor uses jack,
5 sets of jack are arranged on by Construction in Preparatory Stage (before i.e. immersed tube is poured water) often to be saved the junction of tube coupling and reserves pipeline, now
Jack hydraulic pipeline is connected under water by diver.
Immersed tube floating, after the completion of all preparations, airbag aeration is carried out first, there is provided to buoyancy so that tube coupling exists
Underwater negative buoyancy force reaches about 6% immersed tube tube coupling weight；It is then turned on thrustor so that immersed tube and tube coupling to be removed depart from about
50cm；Now start tackling system, dismounting immersed tube is slowly risen floating to the water surface.
Tube coupling is hauled to designated area, after tube coupling floating water outlet, tube coupling is refuted with side and is fixed, passes through tugboat transportation by driving
To designated area, it is necessary to which what is proposed is that transportation by driving navigation channel needs to reach transportation by driving condition in advance.
Tube coupling Demolition Construction is completed, stationary rope is removed after reaching designated area, by the slow sinking of tube coupling to designated area,
Complete tube coupling Demolition Construction；Can designated area nearby dig pit bury immersed tube, can also transportation by driving to designated area recycle
On immersed tube tunnel tube coupling FS final spice, such as there is no FS final spice, constructed by such scheme, if there is most
Terminating head, then construction can be completed by the construction method that FS final spice is removed together with the tube coupling of both ends.
In order to be better understood from this programme, Fig. 1 is added to Fig. 3.When removing thrust section, as shown in figure 1, thrust section is turned left
For land-based area section, it is the tube coupling at whole tunnel both ends to turn right as marine site section, immersed tube joining section 2, is passed through between itself and marine section 3
GINA waterstops 5 are tightly connected, and are that thrust section removes part 1 in the end of immersed tube joining section 2, during construction, are excavated region 4 and are selected
Around it, after thrust section dismounting part 1 is removed, certain space will be left in the end of immersed tube joining section 2, beneficial to subsequently applying
Work.
As shown in Fig. 2 removing schematic cross-sectional view for immersed tube tunnel, thicker black wire part is tunnel in figure,
The inside filling helps floating material 8, and either both ends tube coupling or normal reach tube coupling, can be in pipe in order to increase buoyancy when removing
Save both sides increase buoyancy tank 6.
As shown in figure 3, being immersed tube tunnel demolishing process schematic diagram, tube coupling is arranged on blotter 10, helps floating material to pacify
Dress position 11 is provided with air bag, after the lifting rope 12 of the drop down of crane gear 7 is connected with tube coupling, passes through controlling cable and gas tube
The priority of road 13 to helping, inflate and control thrustor acts by floating material so that removes tube coupling 9 and is separated with not removing tube coupling 14, then
Start crane gear, tube coupling is emerged.
Certainly, the above is only presently preferred embodiments of the present invention, it is impossible to is considered as limiting the embodiment to invention
Scope.The present invention is also not limited to the example above, and those skilled in the art are in the essential scope of the present invention
The equivalent change made and improvement etc., all should belong to patent covering scope of the present invention.
Claims (5)
- A kind of 1. immersed tube tunnel tube coupling method for dismounting, it is characterised in that：Including the preparation process before construction, remove the end pipe of tunnel two Save step and remove tunnel normal reach tube coupling step；Preparation process before construction, including remove tunnel in protruding parts built-in fitting, remove waterstop, in tunnel installation help it is floating Junction installation thrustor between material, and tube coupling in tunnel；Tunnel both ends tube coupling step is removed, including thrust section in end is removed, thrust section in end is excavated region and poured water, by tunnel ends Help floating material to be connected with aerating device in tube coupling, the lifting rope of crane gear be connected with tube coupling, by the pipeline of thrustor with Control system connects, to helping floating material to inflate so that negative buoyancy force reaches 6% immersed tube tube coupling weight to tube coupling under water, opens pushing tow Device, after tunnel both ends tube coupling and remaining tube coupling disengaging 50cm, start crane gear, tube coupling is emerged；Tunnel normal reach tube coupling step is removed, including excavates the backfill layer of normal reach, floating material will be helped in tunnel normal reach tube coupling Material is connected with aerating device, and the lifting rope of crane gear is connected with tube coupling, the pipeline of thrustor is connected with control system, right Help floating material to inflate so that negative buoyancy force reaches 6% immersed tube tube coupling weight to tube coupling under water, opens thrustor, when dismounting just After normal section tube coupling departs from 50cm with remaining tube coupling, start crane gear, tube coupling is emerged；The step of thrust section in end is removed includes excavating end thrust section part, slope retaining is carried out to the foundation ditch of excavation, by only Push away section part and cut off certain length, construction area is cleared out of into the part cut off；Panel wall support pattern or bolt-spary supports mode are included to the mode of the foundation ditch progress slope retaining of excavation.
- 2. immersed tube tunnel tube coupling method for dismounting according to claim 1, it is characterised in that：Thrustor is jack.
- 3. immersed tube tunnel tube coupling method for dismounting according to claim 1, it is characterised in that：By the lifting rope and pipe of crane gear The step of section connection, includes tube coupling base foundation part to wash away space, will run through tube coupling from the lifting rope of crane gear drop down Bottom, lifting rope is connected with the suspension hook on crane gear.
- 4. immersed tube tunnel tube coupling method for dismounting according to claim 1, it is characterised in that：When removing tunnel both ends tube coupling, Buoyancy tank is provided with the both sides of the tube coupling at tunnel both ends.
- 5. immersed tube tunnel tube coupling method for dismounting according to claim 1, it is characterised in that：Remove tunnel normal reach tube coupling When, in normal reach tunnel, the both sides of tube coupling are provided with buoyancy tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610343063.6A CN105926678B (en) | 2016-05-23 | 2016-05-23 | Immersed tube tunnel tube coupling method for dismounting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610343063.6A CN105926678B (en) | 2016-05-23 | 2016-05-23 | Immersed tube tunnel tube coupling method for dismounting |
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| Publication Number | Publication Date |
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| CN105926678A CN105926678A (en) | 2016-09-07 |
| CN105926678B true CN105926678B (en) | 2018-04-03 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003166257A (en) * | 2001-11-30 | 2003-06-13 | Taisei Corp | Immersed tube for submarine tunnel, reaching method of shield machine to immersed tube and starting method of shield machine from immersed tube |
| CN1970887A (en) * | 2005-11-27 | 2007-05-30 | 苗德政 | Earth pit for prefabricating members for use in hydraulic engineering, float transferring device therefore, and their using method |
| CN104612180A (en) * | 2015-02-16 | 2015-05-13 | 中交一航局第二工程有限公司 | Immersed tube section separating device for seabed immersed tunnel |
-
2016
- 2016-05-23 CN CN201610343063.6A patent/CN105926678B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003166257A (en) * | 2001-11-30 | 2003-06-13 | Taisei Corp | Immersed tube for submarine tunnel, reaching method of shield machine to immersed tube and starting method of shield machine from immersed tube |
| CN1970887A (en) * | 2005-11-27 | 2007-05-30 | 苗德政 | Earth pit for prefabricating members for use in hydraulic engineering, float transferring device therefore, and their using method |
| CN104612180A (en) * | 2015-02-16 | 2015-05-13 | 中交一航局第二工程有限公司 | Immersed tube section separating device for seabed immersed tunnel |
Non-Patent Citations (1)
| Title |
|---|
| 沉管技术在航道疏浚施工中的应用;周波;《水运工程》;20040625(第06期);全文 * |
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