CN101691893B - Underwater construction method of steel tube - Google Patents
Underwater construction method of steel tube Download PDFInfo
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- CN101691893B CN101691893B CN2009100165249A CN200910016524A CN101691893B CN 101691893 B CN101691893 B CN 101691893B CN 2009100165249 A CN2009100165249 A CN 2009100165249A CN 200910016524 A CN200910016524 A CN 200910016524A CN 101691893 B CN101691893 B CN 101691893B
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Abstract
The invention is an underwater construction method of a steel tube, belonging to the technical field of underwater engineering and comprising the following steps: plugging steel tube openings at a front end and an on-shore segment of the first section of the steel tube by an air bag or a blind plate; enabling the steel tube to float on the water surface by inflating the steel tube, thus facilitating the steel tube to be fed into water; filling water in the steel tube to lead the steel tube to sink underwater, thus realizing continuous welding construction of the steel tube; changing underwater work to on-shore work, thus omitting water transportation of the steel tube; and welding and launching the steel tube section by section, thus needing no underwater work of divers and cooperation of a lot of large-scale ship engine equipment such as floating cranes, barges, tugboats and the like. The method in the invention is suitable for various water area constructions; the entire steel tube is integrated into a whole, and the construction quality is far higher than that in the prior art; and the construction risk and the construction cost are lower.
Description
Technical field
The present invention relates to a kind of steel pipe subaqueous work method, belong to the Underwater Engineering technical field.
Background technique
During steel pipe is constructed under water, usually to relate to transportation, the installation of steel pipe.Steel pipe will be divided into many joints, carries out the flange connection under water or breathe out not connecting, and needs the cooperation of many argosy machine equipments such as crane barge, barge and tugboat.If construct in shallow water area, these ship machine equipments can't come into operation.
Steel pipe connects under water, needs diver's operation under water, be subjected to the very big influence of landform, current and weather, and operation its difficulty in waters anxious at current and that surge is big is just bigger.In case connect failure, will do the cofferdam in the steel pipe connection place, take remedial measures such as placement of concrete sealing connection place or welding under water.Constructional difficulties, long in time limit, have a big risk, the cost height, perplexing the steel pipe underwater construction all the time.
Summary of the invention
Technical problem to be solved by this invention is exactly the method that will change present steel pipe underwater construction fully, and a kind of underwater operation of avoiding is provided, and reduces operating risk, high efficiency method of construction.
The overall plan of a kind of steel pipe subaqueous work method of the present invention is:
1, the front end that head is saved steel pipe blocks, and is provided with on shutoff object or steel pipe walls, drain opening;
2, the leading portion entry of the first joint of order steel pipe, its back segment are welded with other steel pipe assemblings on the coast;
3, down during water, the steel pipe mouth of section is on the bank blocked;
4, by fill, relief opening inflates in steel pipe, the water in the steel pipe under the effect of air pressure from advance, drain opening is extruded, steel pipe floats;
5, hold up the steel pipe of section on the bank, promotion or traction steel pipe move in water;
6, when arriving the precalculated position, leave one section steel pipe on the bank;
7, give the steel pipe exhaust, water can from advance, drain opening enters in the steel pipe, the steel pipe in water can sink to the bottom;
8, remove shutoff object (air bag that is used for separation can be stayed in the steel pipe) on the section steel pipe mouth on the bank, the steel pipe of section continues and other steel pipes assembling welding on the coast.
Repeat 3～8 of this programme.
The present invention adopts following concrete technological scheme:
A kind of steel pipe subaqueous work method, the front end of first joint steel pipe and the shutoff of the steel pipe mouth of section on the bank can be adopted blind plate, also can adopt air bag, the slenderness ratio of the air bag of hemisphere and ellipsoidal head is 1.5～3, and slenderness ratio conical or that be similar to the air bag of conical end socket is 2～4.
A kind of steel pipe subaqueous work method, be provided with on the blind plate that shutoff is used, drain opening or fill, relief opening, also both can be arranged on the same blind plate; The air bag that shutoff is used can have the punching pipe, can by the punching pipe in steel pipe notes, draining or fill, exhaust.
A kind of steel pipe subaqueous work method, the girth of the air bag that shutoff is used when unaerated are 80～97% of the interior cavity perimeter that is closed.
A kind of steel pipe subaqueous work method, the air bag working pressure that shutoff is used is 0.15～0.5MPa.
A kind of steel pipe subaqueous work method, the air bag that shutoff is used has the punching pipe, is used to into, the diameter of the punching pipe of draining should be 5～15% of air bag diameter.
A kind of steel pipe subaqueous work method, advance, drain opening with fill, relief opening should be connected valve.
A kind of steel pipe subaqueous work method can be placed a plurality of air bags in the steel pipe, will be separated into a plurality of cabins in the steel pipe.
A kind of steel pipe subaqueous work method, during steel pipe end launching, Duan steel pipe can adopt carrying air bag or coaster or piston shoes or support to send down water with its picking-up on the bank.
A kind of steel pipe subaqueous work method when steel pipe welding needs upset, can be floated the steel pipe in water stage casing, and Duan steel pipe is placed on the support and can overturns on the bank, during following water, holds up steel pipe with the carrying air bag and leaves support, carries the air bag rolling, send down water with steel pipe.
A kind of steel pipe subaqueous work method, first joint steel pipe front end can adopt the water-inflow and drain valve door of telecontrol.
A kind of steel pipe subaqueous work method can be provided with dowel pile or positioning anchor on the steel pipe laying-out, also can adopt the station keeping ship location.
Beneficial effect
A kind of steel pipe subaqueous work method of the present invention has changed existing steel pipe subaqueous work method, and the change underwater operation is the bank operation, and the water transportation of having saved steel pipe can not take harbour, use crane gear and barge, has saved the water transport cost; Steel pipe no longer needs the expensive connecting flanges of many covers by joint welding, following water; No longer need diver's underwater operation; Do not need the cooperation of many argosy machine equipments such as crane barge, barge and tugboat; Can be fit to the construction of various waters; The whole piece steel pipe becomes one, and construction quality is far above prior art; Construction risk and construction cost are low.
A kind of steel pipe subaqueous work method, the air bag that shutoff is used, effective active length of the air bag of hemisphere and ellipsoidal head is relative longer, its slenderness ratio is 1.5～3, conical or be similar to taper shape (conical bus is straight line basically, what is called is similar to conical bus because the effect of air pressure is camber line) effective active length of the air bag of end socket is shorter relatively, its slenderness ratio is 2～4, working pressure is 0.15～0.5MPa, the active area of the inwall of air bag and tubular member, it is enough big that pressure is wanted, could guarantee sealing, and enough frictional force is arranged with inner tube wall, could guarantee that air bag can not be subjected to the inflation pressure effect in the steel pipe and slides, but its slenderness ratio is crossed conference and is caused the cost height, fill, period of exhaust is long, ineffective defective; The girth of air bag when unaerated be in being closed cavity perimeter 80～97%, help placing air bag, this air bag generally contains skeleton, its elongation percentage generally is not more than 25%, the girth during the air bag unaerated is too small to be unfavorable for sealing.
A kind of steel pipe subaqueous work method is particularly suitable for large-scale, overweight pipeline underwater construction, and for example the immersed tube of seabed tunnel may make the construction process of seabed tunnel, river-crossing tunnel that huge change takes place.
The invention will be further described below in conjunction with drawings and Examples:
Description of drawings
Accompanying drawing 1 is water schematic representation under the first joint of the present invention steel pipe;
View when accompanying drawing 2 floats for steel pipe of the present invention;
Accompanying drawing 3 is separated into the view of many cabins when floating for a plurality of air bags of the present invention with steel pipe.
Among the figure: the 1st, steel pipe, the 2nd, blind plate, the 3rd, advance, drain opening, the 4th, the shutoff air bag, the 5th, punching pipe 6 is carrying air bags
Embodiment
Embodiment 1, as shown in Figure 1, and blowdown steel pipe subaqueous work method.Steel pipe 1 diameter is 2m, and total length is 1000m, and former design is that steel pipe 1 is divided into 20 joints, now changes into by the technical solution of the present invention construction, and method is as follows:
1, the front end that head is saved steel pipe 1 adopts blind plate 2 shutoff, is provided with on blind plate 2, the diameter of drain opening 3 is 200mm, and the telecontrol valve has been installed;
2, the leading portion entry of the first joint of order steel pipe 1, its back segment are welded with other steel pipe assemblings on the coast;
When 3, descending water, with shutoff air bag 4 shutoff of steel pipe 1 mouth of pipe usefulness ellipsoidal head of section on the bank, the total length of air bag 4 is 3m, and its nominal diameter is 2m, and its slenderness ratio is 1.5, and when unaerated, the girth of air bag 4 is 5m, is 80% of the interior girth of steel pipe; Giving the inflation pressure of air bag 4 is 0.5MPa.
4, can in steel pipe, inflate by the punching pipe 5 of shutoff air bag 4, the valve opening of advancing on the blind plate 2, drain opening 3, the water that steel pipe is 1 li under the effect of air pressure from advance, drain opening 3 is extruded, steel pipe 1 floats, and closes into, the valve of drain opening 3;
5, hold up the steel pipe 1 of section on the bank with two carrying air bags 6, steel pipe 1 tilts to the water surface, with less thrust or tractive force steel pipe 1 is moved in water;
6, when arriving the precalculated position, the afterbody of steel pipe 1 rides on the bank the welding support;
7, open the valve of advancing on the blind plate 2, drain opening 3, give steel pipe 1 and 4 exhausts of shutoff air bag, water can from advance, drain opening 3 enters in the steel pipe 1, the steel pipe 1 in water sinks to the bottom;
8, from taking out shutoff air bag 4 section steel pipe 1 mouth of pipe on the bank, the steel pipe 1 of section continues and other steel pipe assembling welding on the coast.
Repeat 3～8 of this programme.
1, the front end that head is saved steel pipe 1 adopts 4 shutoff of shutoff air bag, shutoff air bag 4 has punching pipe 5, and the diameter of punching pipe is 375mm, and advancing on the punching pipe 5, drain opening 3 have been installed the telecontrol valve, do not have urgency, the shutoff air bag 4 of front end generally can not exhaust;
2, the leading portion entry of the first joint of order steel pipe 1, its back segment are welded with other steel pipe assemblings on the coast;
When 3, descending water, with steel pipe 1 mouth of pipe of section shutoff air bag 4 shutoff on the bank;
The total length of air bag 4 is 7.5m, and two ends have hemispherical head, and its nominal diameter is 2.5m, and its slenderness ratio is 3, and when unaerated, the girth of air bag 4 is 7.61m, is 97% of the interior girth of steel pipe; Giving the inflation pressure of air bag 4 is 0.15MPa.
4, inflate in steel pipe 1 by the punching pipe 5 of the shutoff air bag 4 in section steel pipe 1 mouth of pipe on the bank, advance, the valve opening of drain opening 3, the water that steel pipe is 1 li under the effect of air pressure from advance, drain opening 3 is extruded, steel pipe floats, and closes into, the valve of drain opening 3;
5, hold up the steel pipe 1 of section on the bank with four carrying air bags 6, steel pipe 1 tilts to the water surface, with less thrust or tractive force steel pipe 1 is moved in water;
6, when arriving the precalculated position, the afterbody of steel pipe 1 rides on the bank the welding support;
7, open, the valve of drain opening 3, give steel pipe 1 and 4 exhausts of shutoff air bag, water can from advance, drain opening 3 enters in the steel pipe, the steel pipe in water sinks to the bottom;
8, when steel pipe 1 weld length reaches 400m, because water concentrates on the front end of steel pipe 1, steel pipe 1 can bend in floating and sinking process, see accompanying drawing 2, what may surpass steel pipe anti-ly deflects intensity and causes the steel pipe fracture, so every 400m will place at the place shutoff air bag 4, total length is placed nine this air bags 4 altogether, steel pipe is separated into ten cabins, each air bag all has punching pipe 5, adjust water ballast for each cabin of the inside by these punching pipes, the bending when reducing steel pipe 1 floating and sinking can prevent that more than 1 floating of steel pipe and sinking from causing fatigue fracture.
9, take out on the bank shutoff air bag 4 in the section steel pipe mouth, other shutoff air bags 4 in the steel pipe 1 are motionless, and the steel pipe 1 of section continues and other steel pipes assembling welding on the coast.
10, install man-hour at whole piece steel pipe 1, give air bag 4 exhausts by the punching pipe 5 of each shutoff air bag 4, be full of water in the steel pipe 1, air bag 4 is gathered around mouth of pipe place ashore under the promotion of water.
Repeat 3～9 steps of this programme.
The exhaust when meeting with the harsh weather of burst of the shutoff air bag 4 of steel pipe 1 front end, steel pipe 1 can sink in the shortest time, helps construction safety.
Also can on steel pipe 1 wall, be provided with a plurality ofly to advance, drain opening and fill, relief opening, adjust the pressure and the water ballast of air bag 4.
Each shutoff air bag 4 all has many punching pipes 5 that connect balloon ends, can give that a plurality of air bags in the steel pipe fill, exhaust, can give simultaneously that each cabin is filled, draining.
In order to prevent that wind-force, surge and current etc. from causing the steel pipe drift, dowel pile or positioning anchor can be set on the steel pipe laying-out, also can adopt the station keeping ship location.
Run into stormy waves and meet with to open into when harsh weather influence, water discharging valve and to the shutoff air bags, make steel pipe sink under water.
Fast for the speed that makes steel pipe floating and sinking, advance, the diameter of drain opening be greater than fill, the diameter of relief opening is more than 5 times.
Claims (10)
1. steel pipe subaqueous work method, it is characterized in that: a kind of scheme of steel pipe subaqueous work method is:
(1) save the steel pipe front end at head the telecontrol valve is installed, and the front end that head is saved steel pipe blocks with blind plate or air bag, on blind plate or air bag or steel pipe walls, be provided with into, drain opening;
(2) the leading portion entry of the first joint of order steel pipe, its back segment are welded with other steel pipe assemblings on the coast;
(3) down during water, the steel pipe mouth of section is on the bank blocked;
(4) in steel pipe, inflate, the water in the steel pipe under the effect of air pressure from advance, drain opening is extruded, steel pipe floats;
(5) hold up the steel pipe of section on the bank, promotion or traction steel pipe move in water;
(6) when arriving the precalculated position, leave one section steel pipe on the bank;
(7) give the steel pipe exhaust, water can from advance, drain opening enters in the steel pipe, the steel pipe in water can sink to the bottom;
(8) remove blind plate or the air bag that shutoff is used on the section steel pipe mouth on the bank, the steel pipe of section continues and other steel pipes assembling welding on the coast;
Repeat (3)～(8) of this programme.
2. a kind of steel pipe subaqueous work method according to claim 1, it is characterized in that: the air bag described in the described step (1) is that slenderness ratio is the air bag of 1.5～3 hemispherical head, perhaps slenderness ratio is the air bag of 1.5～3 ellipsoidal head, and perhaps slenderness ratio is 2～4 conical or the air bag that is similar to conical end socket.
3. a kind of steel pipe subaqueous work method according to claim 1 is characterized in that: be provided with on the blind plate that shutoff is used, drain opening or setting is filled, relief opening, or both are arranged on the same blind plate.
4. a kind of steel pipe subaqueous work method according to claim 1 and 2, it is characterized in that: the air bag that shutoff is used has the punching pipe, by the punching pipe in steel pipe notes, draining or fill, exhaust.
5. a kind of steel pipe subaqueous work method according to claim 1 and 2 is characterized in that: the girth of the air bag that shutoff is used when unaerated is 80～97% of the interior cavity perimeter that is closed.
6. a kind of steel pipe subaqueous work method according to claim 1 and 2, it is characterized in that: the air bag working pressure that shutoff is used is 0.15～0.5MPa.
7. a kind of steel pipe subaqueous work method according to claim 1 is characterized in that: place a plurality of air bags in steel pipe, will be separated into a plurality of cabins in the steel pipe; Each air bag all has the punching pipe, adjusts water ballast for each cabin of the inside by these punching pipes, the bending when reducing steel pipe floating and sinking.
8. a kind of steel pipe subaqueous work method according to claim 1 is characterized in that: during steel pipe end launching, carrying air bag of the steel pipe of section employing on the bank or coaster or piston shoes or support send down water with its picking-up.
9. a kind of steel pipe subaqueous work method according to claim 1 is characterized in that: when steel pipe welding needs overturn, the steel pipe in water stage casing is floated, Duan steel pipe is placed on the support and overturns on the bank, during following water, holds up steel pipe with the carrying air bag and leaves support, the carrying air bag rolls, and send down water with steel pipe.
10. a kind of steel pipe subaqueous work method according to claim 1 is characterized in that: dowel pile or positioning anchor are set on the steel pipe laying-out, or adopt the station keeping ship location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100165249A CN101691893B (en) | 2009-06-17 | 2009-06-17 | Underwater construction method of steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100165249A CN101691893B (en) | 2009-06-17 | 2009-06-17 | Underwater construction method of steel tube |
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| Publication Number | Publication Date |
|---|---|
| CN101691893A CN101691893A (en) | 2010-04-07 |
| CN101691893B true CN101691893B (en) | 2011-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100165249A Expired - Fee Related CN101691893B (en) | 2009-06-17 | 2009-06-17 | Underwater construction method of steel tube |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705578A (en) * | 2012-06-28 | 2012-10-03 | 西南石油大学 | Construction method of sleeving casing pipe in working pipe |
| CN105042183A (en) * | 2015-07-08 | 2015-11-11 | 中国十七冶集团有限公司 | Method for installing super-long pipeline crossing river |
| CN106122590B (en) * | 2016-08-11 | 2018-06-29 | 中铁上海工程局集团有限公司 | A kind of assist device and its application method for water under steel pipe globality offshore |
| TWI611075B (en) * | 2016-09-26 | 2018-01-11 | Offshore wind turbine generator pipe pile laying method | |
| CN107882026B (en) * | 2016-09-29 | 2019-08-02 | 海洋能源科技股份有限公司 | Offshore wind generating steel-pipe pile sets method |
| CN112814118A (en) * | 2020-12-29 | 2021-05-18 | 中交第三航务工程局有限公司江苏分公司 | Connection construction method for turning section of sea pipeline |
| CN113093762B (en) * | 2021-04-12 | 2024-03-19 | 中交第一航务工程局有限公司 | Intelligent immersed tube carrying and installing integrated ship docking control method and control system |
| CN114923032B (en) * | 2022-04-08 | 2024-06-14 | 淮安市水利勘测设计研究院有限公司 | Construction method for integrally installing large-diameter long-distance river-crossing pipeline |
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- 2009-06-17 CN CN2009100165249A patent/CN101691893B/en not_active Expired - Fee Related
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| CN101691893A (en) | 2010-04-07 |
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Owner name: ZHONG PEICHENG Free format text: FORMER OWNER: ZHONG AIMIN Effective date: 20130417 Owner name: ZHUHAI AOXIN LIFTING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHONG PEICHENG Effective date: 20130417 |
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Effective date of registration: 20130417 Address after: 519055 Guangdong city of Zhuhai province Pingsha Town Industrial Zone No. 168 shamei Sheng Xian Lu Zhuhai Tianzhi ANZ Environmental Technology Co. Ltd. 1 workshop two Patentee after: Zhuhai New Zealand Lifting Technology Co.,Ltd. Address before: 302 room 1, unit 2, building 7-1, building 250000, Lixia District, Lixia District, Shandong, Ji'nan, Jiefang Road Patentee before: Zhong Peicheng Effective date of registration: 20130417 Address after: 302 room 1, unit 2, building 7-1, building 250000, Lixia District, Lixia District, Shandong, Ji'nan, Jiefang Road Patentee after: Zhong Peicheng Address before: 250002, West building, building two, building 238, heroic Road, Ji'nan, Ji'nan, Shandong Patentee before: Zhong Aimin |
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