CN104164885A - Caisson towing method - Google Patents
Caisson towing method Download PDFInfo
- Publication number
- CN104164885A CN104164885A CN201410382237.0A CN201410382237A CN104164885A CN 104164885 A CN104164885 A CN 104164885A CN 201410382237 A CN201410382237 A CN 201410382237A CN 104164885 A CN104164885 A CN 104164885A
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- caisson
- towing
- dock
- cabin
- cabins
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Abstract
The invention discloses a caisson towing method. The caisson towing method includes the following steps that (1) after a caisson is manufactured in a dock, a plurality of longitudinal apron boards and a plurality of transverse apron boards are arranged at the bottom of the caisson, and are intercrossed to form a plurality of cabins; (2) water is injected to the dock until the water level is flush with the water level outside the dock, then a gate is opened, and a towing boat is connected with the caisson; (3) the cabins are inflated, so that the caisson floats, the towing boat tows the caisson to a sinking point, the cabins are deflated, then the caisson sinks, and towing of the caisson is finished. The caisson towing method effectively reduces the number of transportation machines used in the process and accidents caused by improper design and operation in the transportation process. The caisson lifts and floats by inflating the cabins, then the depth of immersion can be reduced in the towing process of the caisson, and therefore towing force is reduced, and towing safety can be ensured conveniently in shallow waters.
Description
Technical field
The present invention relates to a kind of method for towing of marine liquefied natural gas (LNG) tank caisson, belong to liquefied natural gas storage art.
Background technology
Along with the quickening to ocean development paces in the last few years, caisson because it is simple in structure, build easy construction, can utilize the features such as space is large, be widely used in the structure such as harbor wall, harbour, mole, marine liquefied natural gas (LNG) receiving terminal platform.
Traditional caisson transportation resources is to adopt chassis transverse and longitudinal move at the prefabricated caisson of precast yard, then with crane ship lifting caisson to barge, through barging, to job site, scene adopts crane ship lifting again.Traditional caisson transportation resources is only applicable to small-sized caisson, and in the process of crane ship lifting, the design of suspension centre and lifting operation need very accurate.If have suspension ring embedding position inaccuracy or lifting rope mis-arrange, very likely have an accident.
Large-scale gravity caisson weight in ocean engineering even reaches 3000t up to 1000t left and right, and the bodily form is larger, has been not suitable for ship carried and transported.The development of towage technology makes the transport of offshore engineering structure more simple, but because caisson similarly is a chest that has end uncovered, its stability in towage process is difficult to ensure; Drinking water in basis towage process is larger, and the requirements such as the operation to towage operation ship also improve constantly.
Summary of the invention
The object of this invention is to provide a kind of method for towing of caisson, the inventive method can effectively reduce Transport Machinery use amount and may be due to the accident of design and misoperation generation in transportation, improve the stability in large-scale gravity caisson towage process, thereby improve the safety of caisson in towage process.
The method for towing of caisson provided by the present invention, comprises the steps:
(1), after dock is manufactured caisson, several longitudinal skirtboards and several horizontal skirtboards are set, several cabins of described longitudinal skirtboard formation crossing with described horizontal skirtboard in the bottom of described caisson;
(2) described dock is poured water to flushing with the water level outside described dock; Then open the sluices, towboat is connected with described caisson;
(3) described cabin is inflated, make described caisson floating; Utilize described towboat that described caisson is dragged to sinking point, exitted in described cabin, described caisson sinking; So far complete the towage to caisson.
In above-mentioned method for towing, the corresponding position in each described cabin on described Bottom plate of sinkbox is provided with valve, to control the inflation/deflation to described cabin.
In above-mentioned method for towing, described caisson is dragged in the process of sinking point, keep the air pressure in described cabin constant, make towage stable.
In above-mentioned method for towing, in the time being exitted in described cabin, exitted evenly in described cabin, to prevent excessive inclination simultaneously.
Compared with Traditional Transportation method, method for towing of the present invention is to form cabin by skirtboard being set in caisson bottom, to caisson air supporting towage, can simply, effectively complete transport task.Method for towing of the present invention has effectively reduced Transport Machinery use amount and may be due to the accident of design and misoperation generation in transportation.Make caisson jacking floating to the inflation of each cabin, thereby the draft that can reduce in caisson towage process reduce towing cable power, in the safety of the favourable guarantee towage of shallow sea water energy.
Brief description of the drawings
Fig. 1 is the cabin schematic diagram that in method for towing of the present invention, the bottom at caisson forms.
Fig. 2 is caisson drawing in side sectional elevation along its length in method for towing of the present invention.
Fig. 3 is the schematic diagram of method for towing of the present invention.
In figure, each mark is as follows:
1 caisson, 2LNG storage tank, 3 horizontal skirtboards, 4 longitudinal skirtboards, 5 base plates, 6 valves, 7 air water interfaces, 8 towboats, 9 towing cable ropes.
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 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.Adopt air supporting method for towing, step 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 8 and with towing cable rope 9 and connect towboat 8 and the 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 8, the caisson with skirtboard 1 is dragged in the process of sinking point, keeps the air pressure in cabin, make towage stable, as Fig. 3;
(5) be dragged to sinking point, by valve 6, exitted in each cabin, want evenly synchronous in deflation course, prevent excessive inclination, caisson sinking, completes towage operation.
Method for towing provided by the invention can be in the caisson transportation by driving towage operation on harbour, harbour, LNG basis, can effectively reduce Transport Machinery use amount and may be due to the accident of design and misoperation generation in transportation; Make caisson jacking floating to the inflation of each cabin, can reduce the draft in caisson towage process, in the safety of the favourable guarantee towage of shallow sea water energy.
Claims (4)
1. a method for towing for caisson, comprises the steps:
(1), after dock is manufactured caisson, several longitudinal skirtboards and several horizontal skirtboards are set, several cabins of described longitudinal skirtboard formation crossing with described horizontal skirtboard in the bottom of described caisson;
(2) described dock is poured water to flushing with the water level outside described dock; Then open the sluices, towboat is connected with described caisson;
(3) described cabin is inflated, make described caisson floating; Utilize described towboat that described caisson is dragged to sinking point, exitted in described cabin, described caisson sinking; So far complete the towage to caisson.
2. method for towing 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. method for towing according to claim 1 and 2, is characterized in that: described caisson is dragged in the process of sinking point, keep the air pressure in described cabin constant.
4. according to the method for towing described in any one in claim 1-3, it is characterized in that: in the time being exitted in described cabin, exitted evenly in described cabin simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382237.0A CN104164885A (en) | 2014-08-06 | 2014-08-06 | Caisson towing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382237.0A CN104164885A (en) | 2014-08-06 | 2014-08-06 | Caisson towing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104164885A true CN104164885A (en) | 2014-11-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410382237.0A Pending CN104164885A (en) | 2014-08-06 | 2014-08-06 | Caisson towing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN104164885A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612172A (en) * | 2014-12-25 | 2015-05-13 | 中铁大桥局集团第二工程有限公司 | Floating assisting method for large sinking well in the case of low water level |
| CN105544577A (en) * | 2015-12-08 | 2016-05-04 | 中国人民解放军理工大学 | Method for quickly anchoring caisson by rocket anchor to achieve plugging |
| CN105667727A (en) * | 2016-03-04 | 2016-06-15 | 中铁隧道集团二处有限公司 | Immersed tube tunnel tube section floating transportation ship organizing method |
| CN108248775A (en) * | 2016-12-28 | 2018-07-06 | 天津正初科技有限公司 | A kind of side power flood fighting patrol equipment with water injecting tank |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130488A (en) * | 1984-07-24 | 1986-02-12 | Ishikawajima Harima Heavy Ind Co Ltd | Method of constructing excreta disposal facility |
| CN1730842A (en) * | 2005-09-07 | 2006-02-08 | 天津大学 | Maritime air float hauling and positioning sinking mounting method for soft-foundation box-cylinder type infrastructure |
| CN103693168A (en) * | 2013-12-19 | 2014-04-02 | 中国海洋石油总公司 | Water transportation system for marine LNG (Liquefied Natural Gas) storage tank |
| CN103711138A (en) * | 2013-12-19 | 2014-04-09 | 中国海洋石油总公司 | Concrete caisson for bearing LNG storage tank |
| CN103898921A (en) * | 2014-03-21 | 2014-07-02 | 中铁港航局集团深圳工程有限公司 | Caisson binding floating transportation construction method |
-
2014
- 2014-08-06 CN CN201410382237.0A patent/CN104164885A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130488A (en) * | 1984-07-24 | 1986-02-12 | Ishikawajima Harima Heavy Ind Co Ltd | Method of constructing excreta disposal facility |
| CN1730842A (en) * | 2005-09-07 | 2006-02-08 | 天津大学 | Maritime air float hauling and positioning sinking mounting method for soft-foundation box-cylinder type infrastructure |
| CN103693168A (en) * | 2013-12-19 | 2014-04-02 | 中国海洋石油总公司 | Water transportation system for marine LNG (Liquefied Natural Gas) storage tank |
| CN103711138A (en) * | 2013-12-19 | 2014-04-09 | 中国海洋石油总公司 | Concrete caisson for bearing LNG storage tank |
| CN103898921A (en) * | 2014-03-21 | 2014-07-02 | 中铁港航局集团深圳工程有限公司 | Caisson binding floating transportation construction method |
Non-Patent Citations (1)
| Title |
|---|
| 彭延建: "海上LNG模块化接收终端的平面布置", 《中国水运》, vol. 14, no. 5, 31 May 2014 (2014-05-31) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612172A (en) * | 2014-12-25 | 2015-05-13 | 中铁大桥局集团第二工程有限公司 | Floating assisting method for large sinking well in the case of low water level |
| CN105544577A (en) * | 2015-12-08 | 2016-05-04 | 中国人民解放军理工大学 | Method for quickly anchoring caisson by rocket anchor to achieve plugging |
| CN105667727A (en) * | 2016-03-04 | 2016-06-15 | 中铁隧道集团二处有限公司 | Immersed tube tunnel tube section floating transportation ship organizing method |
| CN108248775A (en) * | 2016-12-28 | 2018-07-06 | 天津正初科技有限公司 | A kind of side power flood fighting patrol equipment with water injecting tank |
| CN108248775B (en) * | 2016-12-28 | 2020-10-30 | 隗有祥 | Side power flood fighting patrol equipment with water injection tank |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141126 |