CN104164886A - Sinking leveling and reinforcing method for caisson - Google Patents
Sinking leveling and reinforcing method for caisson Download PDFInfo
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- CN104164886A CN104164886A CN201410381965.XA CN201410381965A CN104164886A CN 104164886 A CN104164886 A CN 104164886A CN 201410381965 A CN201410381965 A CN 201410381965A CN 104164886 A CN104164886 A CN 104164886A
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- caisson
- sinking
- cabins
- leveling
- cabin
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Abstract
The invention discloses a sinking leveling and reinforcing method for a caisson. The sinking leveling and reinforcing method for the caisson includes the following steps that (1) after the caisson is towed to a sinking point according to an air floatation method, the caisson sinks, a plurality of transverse apron boards and a plurality of longitudinal apron boards are arranged at a bottom board of the caisson and are intercrossed to form a plurality of cabins, and towing and sinking of the caisson are achieved by inflating and deflating the cabins; (2) the caisson is ballasted, the longitudinal apron boards and the transverse apron boards are inserted to mud on the seabed, and the cabins are filled with sea water; (3) the sea water in the cabins is pumped, so that the bottom board of the caisson sinks to the mud on the seabed, and the cabins are grouted for reinforcement. The apron boards are arranged at the bottom of the caisson to form the cabins, the sinking posture of the caisson is adjusted rapidly by adjusting the gas contents in the different cabins in the sinking process, and after the caisson sinks, grouting is carried out through a valve to reinforce a foundation. The controllability of the caisson is improved in the sinking process, and the sinking safety and stability of the foundation of the caisson are improved effectively.
Description
Technical field
The sinking leveling reinforcement means that the present invention relates to a kind of caisson, belongs to offshore oil and gas storage art.
Background technology
Caisson type is broad-based to be applied in the ocean engineerings such as harbour, harbour, mole.Caisson in ocean engineering is similar to bottom lock, the box of upper opening.Caisson in tradition ocean engineering is generally manufactured in bank or dock, and then transportation by driving is in place, pours water and fills sinking, makes it steadily to sink on the ground or riprap foundation having flattened.If the soil property of basic bottom is poor, after caisson sinking, the soil body has certain inhomogeneous consolidation settlement, very easily causes the inclination of caisson, and is difficult for leveling after laying foundation tilts, and sinking process is wayward.If misoperation in sinking process, probably causes the inclination of laying foundation, cause local failure, totally unfavorable to basic safety and stability.So, a kind of sinking leveling reinforcement means of caisson need to be provided, be intended to improve controllability, the safety of laying foundation sinking construction and strengthen basic stability.
Summary of the invention
The object of this invention is to provide a kind of sinking leveling reinforcement means of caisson, the inventive method can fast and effeciently regulate the attitude of caisson in sinking process, and steel skirtboard coordinates grouting can reinforce to a great extent laying foundation, improve operability and safety in caisson sinking process, strengthened basic stability.
The sinking leveling reinforcement means of caisson provided by the present invention, comprises the steps:
(1) by air-float method by caisson towage to sinking point, and make caisson sinking;
The base plate of described caisson is provided with several horizontal skirtboards and several longitudinal skirtboards, and crossing setting of described horizontal skirtboard and described longitudinal skirtboard forms several cabins; By described cabin being inflated and exitting and realize towage and the sinking to described caisson;
(2) described caisson is carried out to ballast (by perfusion seawater), make described longitudinal skirtboard and described horizontal skirtboard be inserted into seabed mud face; In described cabin, be full of seawater;
(3) extract the seawater in described cabin, make the base plate of described caisson sink down into seabed mud face; And described cabin is in the milk to reinforce, specifically can concrete perfusion.
In above-mentioned sinking leveling reinforcement means, the corresponding position in each described cabin on described Bottom plate of sinkbox is provided with valve.
In above-mentioned sinking leveling reinforcement means, the operation of inflating, exitting and drawing water by described valve.
Compared with traditional caisson sinking method, the present invention's leveling reinforcement means tool that sinks has the following advantages:
Bottom caisson, arrange that skirtboard forms cabin, in sinking process, by regulating the sinking attitude of the gas content quick adjustment caisson in different cabins, after sinking finishes, pass through valve consolidation by grouting basis.The present invention has improved the controllability of caisson in sinking process, has effectively increased the safety and stability of the sinking of laying foundation.
Brief description of the drawings
Fig. 1 is the present invention's cabin schematic diagram forming in the bottom of caisson in leveling reinforcement means that sinks.
Fig. 2 is the present invention's vertical section schematic diagram along its length in sinking process in water of caisson in leveling reinforcement means that sinks.
Fig. 3 is that sink caisson in leveling reinforcement means of the present invention enters after mud in sinking process vertical section schematic diagram along its length.
Fig. 4 is that the present invention's caisson in leveling reinforcement means that sinks enters the schematic diagram after mud completely, and wherein net region represents consolidation by grouting district.
In figure, each mark is as follows:
1 caisson, 2 LNG storage tanks, 3 horizontal skirtboards, 4 longitudinal skirtboards, 5 Bottom plate of sinkbox, 6 valves, 7 air water interfaces.
Detailed description of the invention
The experimental technique using in following embodiment if no special instructions, is conventional method.
Material, reagent etc. used in following embodiment, if no special instructions, all can obtain from commercial channels.
Caisson 1 is the basis of liquefied natural gas (LNG) storage tank, and length direction is 79.6m, and wide is 45m, and height is 40m; As shown in Figure 1, by arrange the horizontal skirtboard 3 of 10 road steel (high is 5m) and the longitudinal skirtboard 4 of 5 road steels (high is 5m) in the bottom of caisson 1, on the base plate 5 of caisson 1, form 36 cabins.The base plate 5 of caisson 1 is provided with valve 6 in the corresponding position, position in each cabin, and valve 6 is connected with air pump, uses air pump to inflate cabin, as shown in Figure 2 in towage process.The step of the sinking reinforcement means of employing with skirtboard caisson is as follows:
(1) treat that above-mentioned band skirtboard caisson finishes in dock construction, and after using crane gear lifting LNG storage tank 2 to complete, dock is filled with to seawater to flushing with water level outside depressed place;
(2) open caisson, open into towboat and with towing cable rope and connect towboat and caisson 1 with skirtboard;
(3) use air pump by each valve 6, cabin to be inflated, make it steadily floating, and keep 2-4m water seal height; Start towboat caisson 1 is hauled out to dock;
(4) with towboat, the caisson with skirtboard 1 is dragged in the process of sinking point, keeps the air pressure in cabin, make towage stable;
(5) be dragged to sinking point, by valve 6, exitted in each cabin, in deflation course, want evenly synchronous, prevent excessive inclination, caisson is steadily sunk, caisson sinking, as shown in Figure 2; Gas in cabin is all emitted the most at last;
(6) to caisson 1 ballast (by perfusion seawater), make caisson 1 continue to sink, treat that skirtboard enters mud certain depth, as shown in Figure 3, now in cabin, oneself is full of water;
(3) water of extracting out in cabin forms negative pressure, sinks to mud face by draw water speed and pump-out leveling caisson to Bottom plate of sinkbox of control;
(4) continue to draw water, Bottom plate of sinkbox occupied stably on mud face, by valve to the soil body in cabin be in the milk (concrete) reinforce, as shown in Figure 4, net region is consolidation by grouting region.
The present invention's leveling reinforcement means that sinks, can reinforce in operation for the caisson sinking leveling on harbour, harbour, LNG basis, by controlling air pressure and the water yield in cabin, the attitude in quick adjustment caisson sinking process, that has effectively improved sinking construction can handling and efficiency.
Claims (3)
1. a sinking leveling reinforcement means for caisson, comprises the steps:
(1) by air-float method by caisson towage to sinking point, and make caisson sinking;
The base plate of described caisson is provided with several horizontal skirtboards and several longitudinal skirtboards, and crossing setting of described horizontal skirtboard and described longitudinal skirtboard forms several cabins; By described cabin being inflated and exitting and realize towage and the sinking to described caisson;
(2) described caisson is carried out to ballast, make described longitudinal skirtboard and described horizontal skirtboard be inserted into seabed mud face; In described cabin, be full of seawater;
(3) extract the seawater in described cabin, make the base plate of described caisson sink down into seabed mud face; And described cabin is in the milk to reinforce.
2. sinking leveling reinforcement means according to claim 1, is characterized in that: the corresponding position in each described cabin on described Bottom plate of sinkbox is provided with valve.
3. sinking leveling reinforcement means according to claim 2, is characterized in that: the operation of being inflated, exitting and being drawn water by described valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410381965.XA CN104164886A (en) | 2014-08-06 | 2014-08-06 | Sinking leveling and reinforcing method for caisson |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410381965.XA CN104164886A (en) | 2014-08-06 | 2014-08-06 | Sinking leveling and reinforcing method for caisson |
Publications (1)
| Publication Number | Publication Date |
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| CN104164886A true CN104164886A (en) | 2014-11-26 |
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| CN201410381965.XA Pending CN104164886A (en) | 2014-08-06 | 2014-08-06 | Sinking leveling and reinforcing method for caisson |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780796A (en) * | 2016-03-17 | 2016-07-20 | 王燏斌 | Underwater multi-foundation combination integral construction method |
| CN106638462A (en) * | 2017-01-17 | 2017-05-10 | 中交第三航务工程勘察设计院有限公司 | Grid type negative pressure assembly bank protection structure and construction method thereof |
| CN106759426A (en) * | 2016-12-30 | 2017-05-31 | 中交第二航务工程局有限公司 | Soft layer well sinking control method and device |
| CN113266030A (en) * | 2021-05-13 | 2021-08-17 | 武汉市市政建设集团有限公司 | Underwater bottom sealing construction method for deep well |
| CN113550343A (en) * | 2021-07-20 | 2021-10-26 | 江苏筑港建设集团有限公司 | Energy-saving caisson shipment gasbag atmospheric pressure wireless monitoring system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000290936A (en) * | 1999-04-12 | 2000-10-17 | Shimizu Corp | Method and caisson for constructing bridge pier footing |
| CN102926350A (en) * | 2012-11-12 | 2013-02-13 | 天津大学 | Floating transport and towing dock module and construction method thereof |
| CN203741857U (en) * | 2013-12-19 | 2014-07-30 | 中国海洋石油总公司 | Concrete caisson for bearing LNG storage tanks |
| CN203740103U (en) * | 2013-12-19 | 2014-07-30 | 中国海洋石油总公司 | Water transport system for offshore LNG storage tank |
-
2014
- 2014-08-06 CN CN201410381965.XA patent/CN104164886A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000290936A (en) * | 1999-04-12 | 2000-10-17 | Shimizu Corp | Method and caisson for constructing bridge pier footing |
| CN102926350A (en) * | 2012-11-12 | 2013-02-13 | 天津大学 | Floating transport and towing dock module and construction method thereof |
| CN203741857U (en) * | 2013-12-19 | 2014-07-30 | 中国海洋石油总公司 | Concrete caisson for bearing LNG storage tanks |
| CN203740103U (en) * | 2013-12-19 | 2014-07-30 | 中国海洋石油总公司 | Water transport system for offshore LNG storage tank |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780796A (en) * | 2016-03-17 | 2016-07-20 | 王燏斌 | Underwater multi-foundation combination integral construction method |
| CN106759426A (en) * | 2016-12-30 | 2017-05-31 | 中交第二航务工程局有限公司 | Soft layer well sinking control method and device |
| CN106638462A (en) * | 2017-01-17 | 2017-05-10 | 中交第三航务工程勘察设计院有限公司 | Grid type negative pressure assembly bank protection structure and construction method thereof |
| CN113266030A (en) * | 2021-05-13 | 2021-08-17 | 武汉市市政建设集团有限公司 | Underwater bottom sealing construction method for deep well |
| CN113550343A (en) * | 2021-07-20 | 2021-10-26 | 江苏筑港建设集团有限公司 | Energy-saving caisson shipment gasbag atmospheric pressure wireless monitoring system |
| CN113550343B (en) * | 2021-07-20 | 2022-06-21 | 江苏筑港建设集团有限公司 | Energy-saving caisson shipment gasbag atmospheric pressure wireless monitoring system |
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Application publication date: 20141126 |