CN105927792A - Water floating transportation method for prestressed concrete cylinder pipes - Google Patents
Water floating transportation method for prestressed concrete cylinder pipes Download PDFInfo
- Publication number
- CN105927792A CN105927792A CN201610212882.7A CN201610212882A CN105927792A CN 105927792 A CN105927792 A CN 105927792A CN 201610212882 A CN201610212882 A CN 201610212882A CN 105927792 A CN105927792 A CN 105927792A
- Authority
- CN
- China
- Prior art keywords
- prestressed concrete
- concrete cylinder
- cylinder pipe
- waterline
- tunnel
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/16—Laying or reclaiming pipes on or under water on the bottom
- F16L1/161—Laying or reclaiming pipes on or under water on the bottom the pipe being composed of sections of short length
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/20—Accessories therefor, e.g. floats, weights
- F16L1/24—Floats; Weights
Abstract
The invention discloses a water floating transportation method for prestressed concrete cylinder pipes. The method includes the following steps: setting a positioning sinking marker of the prestressed concrete cylinder pipes; laying brick wall cofferdams at two ends of a waterline tunnel; adding water to the waterline tunnel; placing airbags at two ends of the prestressed concrete cylinder pipes, and inflating the airbags; transferring the prestressed concrete cylinder pipes with the airbags at the two ends thereof to the waterline tunnel; using ships to transfer the prestressed concrete cylinder pipes with the airbags at two ends thereof to corresponding positions; opening air valves of the airbags to allow the prestressed concrete cylinder pipes to sink; and removing the brick wall cofferdams at the two ends of the waterline tunnel, discharging the water, and installing the prestressed concrete cylinder pipes segment by segment. The method needs a few devices, is low in demands for operation space, is less in construction interference, is high in safety, and is high in transportation efficiency; and during transportation, collision and friction between the pipes and mechanical devices can be effectively avoided, and then the prestressed concrete cylinder pipes can be protected from damage.
Description
Technical field
The present invention relates to the way of transportation of a kind of Prestressed concrete cylinder pipe, particularly relate to a kind of prestress steel
Cylinder pipe of concrete water floating transportation method.
Background technology
Prestressed concrete cylinder pipe (Prestressed Concrete Cylinder Pipe, write a Chinese character in simplified form PCCP) refers to
Ring orientation prestress steel wire, then the cement that spray thereon is fine and close it is wound around on high-strength concrete tube core with steel cylinder
Mortar cover and the water-supply-pipe made.It is the multiple tube being made up of sheet metal, high tensile steel wire and concrete
Material, it fully and has synthetically played the tension of steel, easily sealing and the resistance to compression of concrete, corrosion resistance
Can, there is the characteristic that high leakproofness, high intensity and height are impervious.
Waterline commonly uses waterline tunnel.And Prestressed concrete cylinder pipe is commonly applied to waterline
In tunnel.
Compare the installation carrying out Prestressed concrete cylinder pipe in open place, at waterline tunnel in-cavity construction
Can be more difficult, the particularly transport of Prestressed concrete cylinder pipe, it is mainly manifested in waterline tunnel
Narrow space, mass transit vehicle cannot enter hole, needs secondary to transport, simultaneously road conditions in waterline tunnel
Poor, transport interference is big, and efficiency is low, and security requirement is strict.
The most common traffic program has:
Vehicle transport scheme.The long 6m of Prestressed concrete cylinder pipe single-unit, weight 3.0t, can use 8t east wind vapour
Car transport PCCP pipeline.Program simple and flexible, expense about 4.85 ten thousand yuan, but it is primarily present Railway Project,
One is narrow space in hole, and vehicle one can only move back one and goes out, and conevying efficiency is relatively low；Two is to have laid sand pad at the bottom of hole
Layer, walks after vehicle load especially difficult, easily occurs falling into car, affects traffic safety and conevying efficiency.
Rail transport scheme.The program need on sand bedding course attachment rail, corresponding reinforcement measure should be used, this
Outer owing to purchasing track and railcar, it is contemplated that expense about 10.7 ten thousand yuan, once put into relatively big, pipeline transportation is complete
Cannot reuse after one-tenth, cause waste.
Summary of the invention
For overcoming the deficiencies in the prior art, the present invention proposes a kind of Prestressed concrete cylinder pipe water and floats transporter
Method.
The technical scheme is that such, a kind of Prestressed concrete cylinder pipe water floating transportation method, bag
Include following steps:
S1: on waterline tunnel sidewall, prestressing force is set according to often saving Prestressed concrete cylinder pipe length
Cylinder concrete pipe positioning sinking labelling；
S2: export walled weir of laying bricks at waterline tunnel two ends；
S3: discharge water to waterline tunnel, water level is higher than the diameter of Prestressed concrete cylinder pipe；
S4: place air bag at Prestressed concrete cylinder pipe two ends, and to airbag aeration, air bag is completely plugged
The two ends of Prestressed concrete cylinder pipe；
S5: two ends are transported in the water of waterline tunnel with the Prestressed concrete cylinder pipe of air bag；
S6: use ship that with the Prestressed concrete cylinder pipe of air bag, two ends are transported to relevant position；
S7: open the air valve of the air bag at Prestressed concrete cylinder pipe two ends so that prestress steel cylinder concrete
Pipe sinks, and is pulled out by air bag；
S8: remove the brick wall cofferdam at waterline tunnel two ends, discharge water, section by section prestressed steel cylinder coagulation
Soil pipe.
Further, the brick wall cofferdam at exit, waterline tunnel two ends described in described step S2 is thick
20cm, high 150cm.
Further, step S6 further comprises the steps of:
S61: make foam boat；
S62: anchoring crotch, waterline tunnel two ends are set on the brick wall cofferdam at waterline tunnel two ends
Anchoring crotch between with rope connect, described rope be used as pull rope；
S63: foam boat is transported to waterline tunnel.
Further, described foam captain 2.5m, wide 1.8m, thick 40cm.
Further, described step S4 includes step:
S41: foreign material in cleaning Prestressed concrete cylinder pipe；
S42: air bag outermost end is flushed with Prestressed concrete cylinder pipe end placement or mixes to pre-stress steel cylinder
In solidifying soil pipe, indentation 5-10cm places.
Further, described Prestressed concrete cylinder pipe internal diameter is 0.8m, wall thickness 75mm, long 6m；
Described air bag diameter 0.8m, air pressure inside 0.02MPa.
Further, step S7 further comprises the steps of:
S71: make a mark in the waterline tunnel position placing Prestressed concrete cylinder pipe, prevents weight
Purgation again sinks Prestressed concrete cylinder pipe.
The beneficial effects of the present invention is, needed for Prestressed concrete cylinder pipe water floating transportation method of the present invention
Equipment is few, working place requires low, and construction interference is few, and safety is high, is suitable at distance, narrow and small tunnel
Interior construction；A plurality of Prestressed concrete cylinder pipe can carry out water transportation simultaneously, and conevying efficiency is high, transports
Journey effectively prevent the collision friction of body and plant equipment, preferably protect Prestressed concrete cylinder pipe
Damage.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention；
Fig. 2 be in the present invention two ends with the Prestressed concrete cylinder pipe structural representation of air bag.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
Refer to Fig. 1, a kind of Prestressed concrete cylinder pipe water floating transportation method, including step:
S1: on waterline tunnel sidewall, prestressing force is set according to often saving Prestressed concrete cylinder pipe length
Cylinder concrete pipe positioning sinking labelling.Before positioning sinking labelling is set, in addition it is also necessary to complete water-supply-pipe threaded list
Bottom hole, clear base and sand bedding course are laid, and sand bedding course laying requires smooth, closely knit.
S2: export walled weir of laying bricks at waterline tunnel two ends.In general, described waterline tunnel
Brick wall cofferdam thickness 20cm in exit, two ends, high 150cm, it is used as temporary water dash and water-retention.
S3: discharge water to waterline tunnel, water level is higher than the diameter of Prestressed concrete cylinder pipe；
S4: place air bag at Prestressed concrete cylinder pipe two ends, and to airbag aeration, air bag is completely plugged
The two ends of Prestressed concrete cylinder pipe.Step S4 includes step S41: clear up Prestressed concrete cylinder pipe
Interior foreign material, first clean out the foreign material in Prestressed concrete cylinder pipe, the particularly model at two ends 1.0～1.5m
Enclosing, place air bag the most respectively at the two ends of pipeline, in order to prevent air bag from encountering sharp objects, step S4 is also
Including step S42: air bag outermost end is flushed placement or to prestress steel with Prestressed concrete cylinder pipe end
In cylinder pipe of concrete, indentation 5-10cm places.Use air compressor machine that air bag is inflated, gas replenishment process is followed
Front fast rear slow principle, gas tube setting Pressure gauge to control the blowing pressure, making the air pressure in air bag reach
During setting, gasbag ektexine and Prestressed concrete cylinder pipe inwall are in close contact state.
S5: two ends are transported in the water of waterline tunnel with the Prestressed concrete cylinder pipe of air bag.By
Cannot the PCCP pipeline of 6m length be hoisted in hole in water in loop wheel machine, therefore change PC220 excavator into and hang
Fortune.When air bag is laid after inflation completes, use excavator pipeline transportation in the water of hole, and will bubble with rope
Foam ship is connected with pipeline.During pipeline handling, it should be noted that duct orientation, bellmouth is positioned at upstream, socket position
In downstream；Protect air bag simultaneously, prevent encountering sharp objects and cause gas leakage.
S6: use ship that with the Prestressed concrete cylinder pipe of air bag, two ends are transported to relevant position；Step
S6 also includes step S61: make foam boat；Step S62: in the brick wall cofferdam at waterline tunnel two ends
On anchoring crotch is set, between the anchoring crotch at waterline tunnel two ends with rope connect, described rope use
Make pull rope；With step S63: foam boat to be transported to waterline tunnel.Described foam captain 2.5m, wide
1.8m, thick 40cm.In workmen on foam boat hauls hole, gate-valve chamber exports, with tunnel, the traction being connected
Rope advances, and such Prestressed concrete cylinder pipe completes transport in water under suspended state.
S7: open the air valve of the air bag at Prestressed concrete cylinder pipe two ends so that prestress steel cylinder concrete
Pipe sinks, and is pulled out by air bag.Step S7 also should include S71: is placing Prestressed concrete cylinder pipe
Waterline tunnel position make a mark, prevent from repeating sinking Prestressed concrete cylinder pipe.
S8: remove the brick wall cofferdam at waterline tunnel two ends, discharge water, section by section prestressed steel cylinder coagulation
Soil pipe.After PCCP pipeline floats the whole locating and submerging of conveying method by water, remove waterline tunnel outlet brick wall
Cofferdam Jiang Shui enters feed ditch, notices that brick wall cofferdam can not disposably be removed, and prevents displacement from exceeding feed ditch and allows stream
Amount requirement.To the pipe laying section by section of direction hole in hole after water is all got rid of, first use simple during installation
Pipeline is sling by straddle truck, then with plate vibrator by the sand bedding course vibratory compaction below pipeline and smooth,
Finally complete mouth of pipe docking.
Referring to Fig. 2, in the present invention, two ends include pre-stress steel cylinder with the Prestressed concrete cylinder pipe of air bag
Pipe of concrete 1, described Prestressed concrete cylinder pipe 1 outer wall is provided with hook 11 near port；
It is arranged on two aerating gasbags 2 of port, described Prestressed concrete cylinder pipe 1 two ends, described inflation
The port of completely plugged described Prestressed concrete cylinder pipe 1 after air bag 2 inflation；
Described aerating gasbag 2 connects tightrope 21 in the side of corresponding port, and described tightrope 21 is connected with iron hoop 22,
Described iron hoop 22 hangs on described hook 11.
The air bag 2 at described Prestressed concrete cylinder pipe 1 two ends bulges after inflation, in some of the present invention
In embodiment, described Prestressed concrete cylinder pipe internal diameter is 0.8m, wall thickness 75mm, long 6m.Described gas
Capsule 2 has blocked the two ends of Prestressed concrete cylinder pipe 1 so that outside water cannot be introduced into pre-stress steel cylinder
Pipe of concrete 1 is internal.When two ends the most all sink equipped with the Prestressed concrete cylinder pipe 1 of aerating gasbag 2
When entering in water, its maximum buoyancy F=ρ gV=1000kg/m being subject to3×10N/kg×6×3.14×0.475×
0.475m3=42.5KN, and the gross weight of Prestressed concrete cylinder pipe 1 and aerating gasbag 2 about 30kN, therefore
Prestressed concrete cylinder pipe 1 can float in water, and part surfaces.
Described aerating gasbag 2 diameter 0.8m, air pressure inside 0.02MPa.Aerating gasbag 2 is subject in water
Hydraulic pressure about 0.01MPa, is therefore typically set to 0.02MPa by the air pressure in aerating gasbag 2.Meanwhile, fill described in
After gas air bag 2 inflation, when Prestressed concrete cylinder pipe 1 floats in water, described aerating gasbag 2 by
Hydraulic pressure within described Prestressed concrete cylinder pipe 1, therefore, in described Prestressed concrete cylinder pipe 1,
The described a length of 1m of aerating gasbag 2 is set, to increase aerating gasbag 2 and Prestressed concrete cylinder pipe 1
Frictional force, otherwise aerating gasbag 2 is by slid inward, the buoyancy that such Prestressed concrete cylinder pipe 1 is subject to
Will reduce, thus cause Prestressed concrete cylinder pipe 1 to be sunken to the bottom.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, this
A little improvements and modifications are also considered as protection scope of the present invention.
Claims (7)
1. a Prestressed concrete cylinder pipe water floating transportation method, it is characterised in that include step:
S1: on waterline tunnel sidewall, prestressing force is set according to often saving Prestressed concrete cylinder pipe length
Cylinder concrete pipe positioning sinking labelling；
S2: export walled weir of laying bricks at waterline tunnel two ends；
S3: discharge water to waterline tunnel, water level is higher than the diameter of Prestressed concrete cylinder pipe；
S4: place air bag at Prestressed concrete cylinder pipe two ends, and to airbag aeration, air bag is completely plugged
The two ends of Prestressed concrete cylinder pipe；
S5: two ends are transported in the water of waterline tunnel with the Prestressed concrete cylinder pipe of air bag；
S6: use ship that with the Prestressed concrete cylinder pipe of air bag, two ends are transported to relevant position；
S7: open the air valve of the air bag at Prestressed concrete cylinder pipe two ends so that prestress steel cylinder concrete
Pipe sinks, and is pulled out by air bag；
S8: remove the brick wall cofferdam at waterline tunnel two ends, discharge water, section by section prestressed steel cylinder coagulation
Soil pipe.
2. Prestressed concrete cylinder pipe water floating transportation method as claimed in claim 1, it is characterised in that
Brick wall cofferdam thickness 20cm at exit, waterline tunnel two ends described in described step S2, high 150cm.
3. Prestressed concrete cylinder pipe water floating transportation method as claimed in claim 1, it is characterised in that
Step S6 further comprises the steps of:
S61: make foam boat；
S62: anchoring crotch, waterline tunnel two ends are set on the brick wall cofferdam at waterline tunnel two ends
Anchoring crotch between with rope connect, described rope be used as pull rope；
S63: foam boat is transported to waterline tunnel.
4. Prestressed concrete cylinder pipe water floating transportation method as claimed in claim 3, it is characterised in that
Described foam captain 2.5m, wide 1.8m, thick 40cm.
5. Prestressed concrete cylinder pipe water floating transportation method as claimed in claim 1, it is characterised in that
Described step S4 includes step:
S41: foreign material in cleaning Prestressed concrete cylinder pipe；
S42: air bag outermost end is flushed with Prestressed concrete cylinder pipe end placement or mixes to pre-stress steel cylinder
In solidifying soil pipe, indentation 5-10cm places.
6. Prestressed concrete cylinder pipe water floating transportation method as claimed in claim 5, it is characterised in that
Described Prestressed concrete cylinder pipe internal diameter is 0.8m, wall thickness 75mm, long 6m；Described air bag diameter 0.8m,
Air pressure inside 0.02MPa.
7. Prestressed concrete cylinder pipe water floating transportation method as claimed in claim 1, it is characterised in that
Step S7 further comprises the steps of:
S71: make a mark in the waterline tunnel position placing Prestressed concrete cylinder pipe, prevents weight
Purgation again sinks Prestressed concrete cylinder pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610212882.7A CN105927792A (en) | 2016-04-07 | 2016-04-07 | Water floating transportation method for prestressed concrete cylinder pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610212882.7A CN105927792A (en) | 2016-04-07 | 2016-04-07 | Water floating transportation method for prestressed concrete cylinder pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105927792A true CN105927792A (en) | 2016-09-07 |
Family
ID=56840231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610212882.7A Pending CN105927792A (en) | 2016-04-07 | 2016-04-07 | Water floating transportation method for prestressed concrete cylinder pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105927792A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764052A (en) * | 2016-12-27 | 2017-05-31 | 北京市政路桥管理养护集团有限公司 | A kind of water applies method pipeline laying facility |
| CN106838459A (en) * | 2016-12-27 | 2017-06-13 | 北京市政路桥管理养护集团有限公司 | A kind of method of roughing-in in sleeve pipe |
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2016
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764052A (en) * | 2016-12-27 | 2017-05-31 | 北京市政路桥管理养护集团有限公司 | A kind of water applies method pipeline laying facility |
| CN106838459A (en) * | 2016-12-27 | 2017-06-13 | 北京市政路桥管理养护集团有限公司 | A kind of method of roughing-in in sleeve pipe |
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Application publication date: 20160907 |