CN101748731A - Method of breaking ground and sinking thick-walled cylinder type foundation through gas injection - Google Patents
Method of breaking ground and sinking thick-walled cylinder type foundation through gas injection Download PDFInfo
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- CN101748731A CN101748731A CN200910244841A CN200910244841A CN101748731A CN 101748731 A CN101748731 A CN 101748731A CN 200910244841 A CN200910244841 A CN 200910244841A CN 200910244841 A CN200910244841 A CN 200910244841A CN 101748731 A CN101748731 A CN 101748731A
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Abstract
The invention relates to a method of breaking ground and sinking a thick-walled cylinder type foundation through gas injection. Vertical preserved gas injection pipes are arranged on the circumference of the cylinder wall at equal intervals, penetrate through a foundation cylinder wall and all penetrate from a foundation sealing top cover; and a preserved negative-pressure hole is arranged on the foundation sealing top cover. The method comprises the following implementation steps: injecting high-pressure gas to the lower end of the foundation cylinder wall through the preserved gas injection pipes to blow away the soil body on the bottom of the foundation cylinder wall and ensure that the foundation continuously sinks; when the sinking resistance of the foundation is more than the down force provided by the gas injection ground-breaking system, and starting a negative pressure device to vacuumize the inside of the foundation through the preserved negative-pressure hole on the foundation sealing top cover to ensure that the foundation continuously sinks. The invention has the advantages as follows: the method is characterized in that the construction is simple, the efficiency is high, the structure is simple and the method can not be affected by sea conditions; and the sinking process becomes easier, the mounting speed is increased, the interference of environment condition can be avoided, the full automatic monitoring operation of the sinking process can be realized and the quality and safety of the construction can be ensured.
Description
Affiliated technical field
The present invention relates to a kind of method of breaking ground and sinking thick-walled cylinder type foundation through gas injection.Belong to the thick-walled cylinder type foundation sinking technology in harbour, ocean, water conservancy and the bridge engineering.
Background technology
At present in harbour, ocean, water conservancy and bridge engineering, the use of thick-walled cylinder type foundation more and more widely, at present the thick-walled cylinder type foundation structure is sunk in the foundation soil body, enforceable method mainly contains the higher excavation of foundation pit method of expense, the ballast method of restricted application, vibratory drilling method and sinking method such as high-pressure jet and air suction that equipment is had relatively high expectations.When the thick-walled cylinder type foundation structure was sunk, resistance was mainly from native friction and adhesive aggregation resistance and the barrel bottom soil resistance in the outside in the barrel.Especially for the thick-walled cylinder type foundation structural shape, resistance can be bigger, and effective sinking that traditional sinking mode can not satisfy structure puts in place.
The present invention is exactly at addressing these problems, improving the sinking quality and the efficient of thick-walled cylinder type foundation.
At the problem that solves thick-walled cylinder type foundation sinking difficulty, the present invention can improve the efficient of thick-walled cylinder type foundation, saves the cost of immerge.
Summary of the invention
The objective of the invention is provides a kind of method of breaking ground and sinking thick-walled cylinder type foundation through gas injection at above-mentioned existing problems, and this method has easy construction, efficient height, simple in structure, is not subjected to the sea conditions characteristics of interference.
Technical scheme of the present invention:
A kind of method of breaking ground and sinking thick-walled cylinder type foundation through gas injection, form by the break ground negative pressure system of taking out of system and basic top pressure closure of the gas injection of basic barrel, the gas injection system of breaking ground of basis barrel comprises along barrel girth spaced set and runs through the vertical reservation air injection pipe of basic barrel, reserves air injection pipe and all pass from basic top pressure closure; The negative pressure system of basis top pressure closure is taken out negative pressure hole for the reservation on basic top pressure closure; Implementation step is as follows: 1) with bucket foundation by deadweight sink in place after, feed gases at high pressure by reserving air injection pipe to basic barrel lower end, gases at high pressure dispel the basic barrel bottom soil body, make the basis continue to sink; 2) when the immerge resistance surpasses the down force that the gas injection system of breaking ground provides, enable negative pressure equipment and take out negative pressure hole by the reservation on the basic top pressure closure and in the basis, vacuumize, make it continue to sink, until the degree of depth that sinks to setting.
The pressure of described feeding gases at high pressure is not more than 10 atmospheric pressure.
The negative pressure value that vacuumizes in the described basis is for being not less than-0.6Mpa.
The invention has the beneficial effects as follows: this method has easy construction, efficient height, simple in structure, be not subjected to the sea conditions characteristics of interference, the immerge system of breaking ground by gas injection, make thick-walled cylinder type foundation sink to all kinds with the expense of economy, especially in the foundation soil body of sand matter to the predetermined degree of depth, the sinking process is simpler, installation rate improves greatly, the interference of ambient conditions can be avoided to a great extent, the full-automatic monitoring task of process, construction quality and the safety that assurance is sunk can be realized.
Description of drawings
Fig. 1 is the basic gas injection of the using this method system architecture schematic diagram that breaks ground.
Fig. 2 is a basic barrel partial structurtes schematic diagram of using this method.
Fig. 3 is a foundation structure schematic top plan view of using this method.
Fig. 4 is a foundation structure elevational schematic view of using this method.
Fig. 5 is a wall barrel-shaped foundation sinking view of using this method.
Among the figure: 1. basic barrel 2. basic top pressure closures 3. are reserved air injection pipe 4. reservations and are taken out negative pressure hole
The specific embodiment
Embodiment:
A kind of method of breaking ground and sinking thick-walled cylinder type foundation through gas injection, as shown in Figure 1, form by the break ground negative pressure system of taking out of system and basic top pressure closure 2 of the gas injection of basic barrel 1, the gas injection system of breaking ground of basis barrel 1 comprises along barrel girth spaced set and runs through the vertical reservation air injection pipe 3 of basic barrel, reserves air injection pipe 3 and all pass from basic top pressure closure 2; The negative pressure system of basis top pressure closure 2 is taken out negative pressure hole 4 for the reservation on basic top pressure closure 2; Implementation step is as follows: 1) with bucket foundation by deadweight sink in place after, feed gases at high pressure by reserving air injection pipe 3 to basic barrel lower end, gases at high pressure dispel the basic barrel 2 bottom soil bodys, make the basis continue to sink; 2) when the immerge resistance surpasses the down force that the gas injection system of breaking ground provides, enable negative pressure equipment and take out negative pressure hole 4 by the reservation on the basic top pressure closure 2 and in the basis, vacuumize, make it continue to sink, until the degree of depth that sinks to setting.
Among this embodiment: the basis is the concrete cylindrical basis of diameter 35m, a high 15m, and the barrel thickness on basis is 0.5m, at basic barrel upper edge girth the vertical reservation air injection pipe that 12 diameters are 0.06m is set uniformly-spaced; The pressure that feeds gases at high pressure is for being not more than 10 atmospheric pressure; The negative pressure value that vacuumizes in the basis is for being not less than-0.6Mpa.
This embodiment practice result shows: this method has simple in structure, easy construction, efficient height, is not subjected to the sea conditions characteristics of interference, and installation rate is fast simultaneously, cost is low, high safety, and can realize the full-automatic monitoring task of process.
Claims (3)
1. method of breaking ground and sinking thick-walled cylinder type foundation through gas injection, it is characterized in that: form by the break ground negative pressure system of taking out of system and basic top pressure closure of the gas injection of basic barrel, the gas injection system of breaking ground of basis barrel comprises along barrel girth spaced set and runs through the vertical reservation air injection pipe of basic barrel, reserves air injection pipe and all pass from basic top pressure closure; The negative pressure system of basis top pressure closure is taken out negative pressure hole for the reservation on basic top pressure closure; Implementation step is as follows: 1) with bucket foundation by deadweight sink in place after, feed gases at high pressure by reserving air injection pipe to basic barrel lower end, gases at high pressure dispel the basic barrel bottom soil body, make the basis continue to sink; 2) when the immerge resistance surpasses the down force that the gas injection system of breaking ground provides, enable negative pressure equipment and take out negative pressure hole by the reservation on the basic top pressure closure and in the basis, vacuumize, make it continue to sink, until the degree of depth that sinks to setting.
2. according to the described method of breaking ground and sinking thick-walled cylinder type foundation through gas injection of claim 1, it is characterized in that: the pressure of described feeding gases at high pressure is not more than 10 atmospheric pressure.
3. according to the described method of breaking ground and sinking thick-walled cylinder type foundation through gas injection of claim 1, it is characterized in that: the negative pressure value that vacuumizes in the described basis is for being not less than-0.6Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910244841A CN101748731A (en) | 2009-12-17 | 2009-12-17 | Method of breaking ground and sinking thick-walled cylinder type foundation through gas injection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910244841A CN101748731A (en) | 2009-12-17 | 2009-12-17 | Method of breaking ground and sinking thick-walled cylinder type foundation through gas injection |
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| CN101748731A true CN101748731A (en) | 2010-06-23 |
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| CN200910244841A Pending CN101748731A (en) | 2009-12-17 | 2009-12-17 | Method of breaking ground and sinking thick-walled cylinder type foundation through gas injection |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9004819B2 (en) | 2010-07-12 | 2015-04-14 | Daoda (Shanghai) Wind Power Investment Co., Ltd. | Installation method and recovery method for offshore wind turbine |
| CN104975612A (en) * | 2015-06-23 | 2015-10-14 | 连卫东 | Novel water open caisson construction technology |
| CN106948355A (en) * | 2017-03-20 | 2017-07-14 | 天津大学 | A kind of pocketed caisson foundation sinking attitude presents control system |
| CN106988335A (en) * | 2017-03-20 | 2017-07-28 | 天津大学 | A kind of compound barrel-shaped foundation sinking posture feedback control system |
| CN109881663A (en) * | 2019-04-09 | 2019-06-14 | 中交一航局第二工程有限公司 | Concrete tubular pile and its pile-driving system and sea area pile sinking construction method |
| CN117569742A (en) * | 2024-01-16 | 2024-02-20 | 浙江省第一水电建设集团股份有限公司 | Pre-punching air knife device and steel pipe pile driving method |
-
2009
- 2009-12-17 CN CN200910244841A patent/CN101748731A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9004819B2 (en) | 2010-07-12 | 2015-04-14 | Daoda (Shanghai) Wind Power Investment Co., Ltd. | Installation method and recovery method for offshore wind turbine |
| CN104975612A (en) * | 2015-06-23 | 2015-10-14 | 连卫东 | Novel water open caisson construction technology |
| CN104975612B (en) * | 2015-06-23 | 2017-06-27 | 连卫东 | Open caisson construction new technology waterborne |
| CN106948355A (en) * | 2017-03-20 | 2017-07-14 | 天津大学 | A kind of pocketed caisson foundation sinking attitude presents control system |
| CN106988335A (en) * | 2017-03-20 | 2017-07-28 | 天津大学 | A kind of compound barrel-shaped foundation sinking posture feedback control system |
| CN106948355B (en) * | 2017-03-20 | 2019-10-29 | 天津大学 | A kind of pocketed caisson foundation sinking posture feedback control system |
| CN106988335B (en) * | 2017-03-20 | 2019-10-29 | 天津大学 | A kind of compound barrel-shaped foundation sinking posture feedback control system |
| CN109881663A (en) * | 2019-04-09 | 2019-06-14 | 中交一航局第二工程有限公司 | Concrete tubular pile and its pile-driving system and sea area pile sinking construction method |
| CN117569742A (en) * | 2024-01-16 | 2024-02-20 | 浙江省第一水电建设集团股份有限公司 | Pre-punching air knife device and steel pipe pile driving method |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Daoda Offshore Wind Power Engineering Technology Co., Ltd. Assignor: Daoda (Shanghai) Wind Power Investment Co., Ltd. Contract record no.: 2011320000097 Denomination of invention: Method of breaking ground and sinking thick-walled cylinder type foundation through gas injection License type: Exclusive License Open date: 20100623 Record date: 20110225 |
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Owner name: JIANGSU DAODA OFFSHORE WIND POWER ENGINEERING TECH Free format text: FORMER OWNER: DAODA (SHANGHAI) WIND POWER INVESTMENT CO., LTD. Effective date: 20110412 |
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Free format text: CORRECT: ADDRESS; FROM: 201206 ROOM 210, NO. 212, LINGHE ROAD, PUDONG NEW DISTRICT, SHANGHAI TO: 226259 KAIXUAN ROAD, ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE, QIDONG CITY, JIANGSU PROVINCE, CHINA |
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Effective date of registration: 20110412 Address after: 226259 triumph Road, Qidong economic and Technological Development Zone, Jiangsu, China Applicant after: Jiangsu Daoda Offshore Wind Power Engineering Technology Co., Ltd. Address before: 201206 Shanghai city Pudong New Area Linghe Road No. 212 room 210 Applicant before: Daoda (Shanghai) Wind Power Investment Co., Ltd. |
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Application publication date: 20100623 |