CN108360544B - Automatic sinking device for open caisson and construction method - Google Patents
Automatic sinking device for open caisson and construction method Download PDFInfo
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- CN108360544B CN108360544B CN201810197306.9A CN201810197306A CN108360544B CN 108360544 B CN108360544 B CN 108360544B CN 201810197306 A CN201810197306 A CN 201810197306A CN 108360544 B CN108360544 B CN 108360544B
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- open caisson
- pressure water
- sinking
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- mud
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses an automatic sinking device of an open caisson and a construction method, which is characterized in that the automatic sinking device of the open caisson is composed of a working platform, a vertical connecting frame, an electric rotating roller, a submersible electric mud cutting blade, a submersible stirrer, a booster water pump, a mud cutting high-pressure water nozzle, a deviation rectifying high-pressure water nozzle, a mud suction pipe, a mud pump, a mud output pipe, an electric control cabinet and the like; the automatic sinking construction method of the open caisson is characterized in that the combined action of high-pressure water nozzles for soil washing and submersible electric mud cutting blades for soil cutting is utilized to convert soil in the open caisson into slurry and convey the slurry to the outside of the open caisson, and the sinking and the deviation correction of the open caisson are realized by automatically controlling equipment through a control system. The invention can realize unmanned operation of the sinking operation surface of the open caisson, controls the sinking speed and deviation through the control system, and ensures the sinking quality of the open caisson.
Description
Technical Field
The invention belongs to the technical field of underground engineering construction, and relates to an automatic sinking device of an open caisson and a construction method.
Background
The open caisson construction is that a bottomless cylinder structure (open caisson) is firstly manufactured on the ground, then soil is taken out from the open caisson under the enclosure of the wall of the open caisson, the open caisson is continuously sunk under the action of self weight to reach the designed elevation position, and then bottom sealing is carried out. The open caisson is mainly applied to bridge foundations, sewage intake pump stations, pipe-jacking working wells, equipment foundations and the like.
At present, there are three main methods for open caisson construction.
Mechanical excavation method
The method for taking the earth in the open caisson by matching excavation of a small excavator with bucket adjustment has the defects of high requirement on construction site, low working efficiency and low construction speed, and is suitable for the operation environment without underground water.
Water flushing method by artificial high-pressure water gun
The method has the advantages that the water is flushed by the manual high-pressure water gun, and then the sludge is discharged by the sludge pump to take soil.
Frogman working with water
When underground water is extremely abundant and artificial precipitation conditions do not exist, the method that frogman is used for washing soil and a mud suction machine is used for sucking mud is adopted for construction, and the method is high in technical difficulty, low in efficiency and very high in construction risk.
In actual construction, the methods have certain disadvantages, and have larger improvement space in the aspects of construction cost, construction progress, safety risk control and the like.
Disclosure of Invention
The invention aims to overcome the defects of the open caisson sinking construction technology, and provides an automatic construction machine and a construction method, so that the construction mechanization degree is improved, the low-efficiency operation is reduced, and the safety risk is reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the automatic sinking device of the open caisson of the invention is characterized in that: the device consists of a working frame structure, a high-pressure water flushing system, a sludge conveying system and an electric control system.
The working frame structure comprises a working platform 1, a vertical connecting frame 4, an electric rotating roller 5, a lower working frame 6, a submersible electric mud cutting blade 8 and a submersible stirrer 9. The vertical connecting frame is connected with the working platform through the adjustable screw rods 3, the vertical height of the vertical connecting frame is adjusted through the telescopic amount of the adjustable screw rods, the electric rotating idler wheels 5 are arranged between the lower working frame and the vertical connecting frame and are controlled by an electric control system, and the lower working frame 6 is driven to rotate along the vertical central line of the open caisson.
The high-pressure water flushing system comprises a water inlet pipe 11, a booster water pump 12, a pressure water pipe 13, a universal rotary joint 14, a mud cutting high-pressure water nozzle 15 and a deviation rectifying high-pressure water nozzle 16, wherein the water spraying direction of the deviation rectifying high-pressure water nozzle can swing along the horizontal direction and the vertical direction, and an independent control switch is arranged in an electric control cabinet to control the opening and closing and swinging directions of the nozzles; the deviation rectifying high-pressure water nozzles are arranged at four corners at the tail end of the vertical connecting frame and are connected with the pressure water pipe.
The sludge conveying system consists of a sludge suction pipe 17, a sludge pump 18 and a sludge output pipe 19.
The electric control system consists of an electric control cabinet, a control circuit and an open caisson attitude data acquisition unit; the electric control cabinet is arranged at the top end of the working platform, the electric rotating roller is electrically connected with the electric control cabinet through a control circuit, and the open caisson attitude data monitoring collector transmits data into the control cabinet; the deviation rectifying high-pressure water nozzle is electrically connected with the electrical control cabinet through a control circuit.
The open caisson sinking construction method is characterized by comprising the following steps:
step a, mounting a device, and adjusting a screw rod to enable a lower working frame to be in contact with the ground;
step b, opening a mud cutting high-pressure water nozzle → starting a booster water pump → starting a submersible electric mud cutting blade;
c, starting the electric rotary roller to drive the lower working frame to rotate → starting the submersible stirrer → starting the sludge pump to discharge sludge and sink → adjusting and fixing the screw rod to control the sinking speed;
d, when the sunk well is sunk to have deviation, the sunk well attitude data collector transmits the data into the control cabinet, the control system closes the mud cutting high-pressure water nozzle, independently starts the deviation-correcting high-pressure water nozzle to adjust the soil cutting direction until the sunk well attitude is adjusted to be normal, closes the deviation-correcting high-pressure water nozzle and opens the mud cutting high-pressure water nozzle;
and e, in the final sinking stage of the open caisson, adjusting the screw rod to lift the vertical connecting frame, controlling the final sinking speed and the continuous sinking amount, and finishing the sinking operation of the open caisson.
Compared with the prior art, the invention has the beneficial effects that:
the invention is provided with the high-pressure water nozzle and the submersible electric mud cutting blade to simultaneously carry out mud cutting work, thereby having high construction efficiency and strong adaptability to soil;
the invention is provided with the sludge conveying system for earthwork outward transportation, and has high degree of mechanization, less manual operation and high unearthing efficiency;
the invention sets the deviation rectifying high-pressure water nozzle to automatically rectify the deviation of the open caisson, so that the deviation rectification is timely and simple, and the probability of engineering accidents is reduced;
the construction method provided by the invention does not need to be operated on the operation surface by workers, and can be used in water-containing and water-free operation environments, so that the construction strength and the construction risk are greatly reduced;
the invention integrates multiple functions, improves the construction efficiency to the maximum extent and reduces the construction cost.
Drawings
Fig. 1 is an elevation view of the present invention.
FIG. 2 is a horizontal cross-sectional view of a work platform portion of the present invention.
FIG. 3 is a horizontal sectional view of the electric rotary roller according to the present invention.
FIG. 4 is a top horizontal cross-sectional view of the lower rack of the present invention.
FIG. 5 is a lower horizontal cross-sectional view of the lower workframe of the invention.
The notation in the figure is: 1 work platform, 2 work platform supports, 3 telescopic screw, 4 vertical link, 5 electric rotary roller, 6 lower part work racks, 7 horizontal locating parts, 8 dive electronic mud cutting blade, 9 dive agitators, 10 spiral cone heads, 11 inlet tubes, 12 booster pumps, 13 penstocks, 14 universal rotary joint, 15 mud cutting high pressure water spray nozzles, 16 high pressure water spray nozzle components of rectifying, 17 mud suction pipe, 18 sludge pump, 19 sludge output tube, 20 electric control cabinet, 21 open caisson wall of a well.
Detailed Description
In the automatic sinking device for the open caisson in the embodiment, the undisturbed soil in the open caisson is converted into slurry by utilizing the combined action of the high-pressure water nozzle 15 for soil flushing and the submersible electric mud cutting blade 8 for soil cutting, the soil cutting range is expanded by the rotation of the lower working frame 6, the submersible stirrer 9 rotates to uniformly mix the slurry and the water, the slurry is pumped out of a working surface by the sludge pump 18 and is conveyed out of the open caisson by the sludge output pipe 19;
in the embodiment, the sinking height and the deviation correction of the open caisson are realized by analyzing the acquired open caisson elevation and open caisson inclination data and then automatically controlling each electrical device through the control system.
The operation scope of this embodiment lower part work frame is adjusted through the adjustable screw rod of vertical link upper end, transfers the screw rod when needing to increase open caisson sinking speed, promotes the screw rod when needing to reduce the settlement volume or reduce open caisson sinking speed.
During specific construction, the vertical connecting frame is made into a segment shape, the lifting holes are formed in the platform, and when the telescopic amount of the screw cannot be met, the vertical connecting frame is lengthened or shortened.
During the specific construction, the sludge pump 20 adopts a common type in a waterless operation environment; in the water-carrying operation environment, the underwater working platform adopts a diving type, and can work underwater or be placed on a working platform.
The open caisson sinking method in the embodiment is operated according to the following steps:
step a, mounting a device, and adjusting a screw rod to enable a lower working frame to be in contact with the ground;
step b, opening a mud cutting high-pressure water nozzle → starting a booster water pump → starting a submersible electric mud cutting blade;
c, starting the electric rotary roller to drive the lower working frame to rotate → starting the submersible stirrer → starting the sludge pump to discharge sludge and sink → adjusting and fixing the screw rod to control the sinking speed;
d, optionally, when the sunk well is sunk and has a deviation, the sunk well attitude data monitoring collector transmits data into the control cabinet, the control system closes the mud cutting high-pressure water nozzle, independently starts the deviation rectifying high-pressure water nozzle to adjust the soil cutting direction until the sunk well attitude is adjusted to be normal, closes the deviation rectifying high-pressure water nozzle and opens the mud cutting high-pressure water nozzle;
and e, in the final sinking stage of the open caisson, adjusting the screw rod to lift the vertical connecting frame, controlling the final sinking speed and the continuous sinking amount, and finishing the sinking operation of the open caisson.
In the concrete construction, the rotating speed of the lower working frame and the water pressure value of the pressure water pump are determined by analyzing sinking data in the initial sinking stage of the open caisson.
During specific construction, the start and stop of the high-pressure water nozzle are adjusted by the control system according to the open caisson attitude data, and the data acquisition mode adopts manual input or is provided with a monitor for synchronous automatic input according to field conditions.
Claims (5)
1. The utility model provides an automatic device that sinks of open caisson, characterized by: the device consists of a working frame structure, a high-pressure water flushing system, a sludge conveying system and an electrical control system; the working frame structure consists of a working platform, a vertical connecting frame, an electric rotating roller, a lower working frame, a submersible electric mud cutting blade and a submersible stirrer; the high-pressure water flushing system consists of a water inlet pipe, a booster water pump, a pressure water pipe, a universal rotary joint, a mud cutting high-pressure water nozzle and a deviation rectifying high-pressure water nozzle; the sludge conveying system consists of a sludge suction pipe, a sludge pump and a sludge output pipe; the submersible electric mud cutting machine comprises a vertical connecting frame, an electric rotary roller, a submersible stirrer, a submersible electric mud cutting blade, a mud cutting high-pressure water nozzle, a mud sucking pipe and a mud sucking pipe, wherein the vertical connecting frame is connected with a working platform through an adjustable screw rod; the electric control system consists of an electric control cabinet, a control circuit and a sunk well attitude data monitoring collector, wherein the electric control cabinet is arranged at the top end of the working platform, the electric rotating roller is electrically connected with the electric control cabinet through the control circuit, and the sunk well attitude data monitoring collector transmits data into the control cabinet; the deviation-rectifying high-pressure water nozzles are electrically connected with the electrical control cabinet through a control circuit, are arranged at four corners of the tail end of the vertical connecting frame and are connected with the pressure water pipe.
2. The automatic sinking device of the open caisson of claim 1, wherein the vertical connecting frame adjusts the vertical height of the vertical connecting frame through an adjusting screw rod.
3. The automatic sinking device of the open caisson of claim 1, wherein the electric rotating rollers are controlled by an electric control system to drive the lower working frame to rotate along the vertical center line of the open caisson.
4. The automatic sinking device of the open caisson of claim 2, wherein the water spraying direction of the deviation-correcting high-pressure water nozzle can rotate along the horizontal direction and the vertical direction, and an independent control switch is arranged in the electric control cabinet to control the opening, closing and rotating directions of the nozzle.
5. A method for sinking an open caisson using the apparatus of claim 1, comprising the steps of:
step a, mounting a device, and adjusting a screw rod to enable a lower working frame to be in contact with the ground;
step b, opening a mud cutting high-pressure water nozzle → starting a booster water pump → starting a submersible electric mud cutting blade;
c, starting the electric rotary roller to drive the lower working frame to rotate → starting the submersible stirrer → starting the sludge pump to discharge sludge and sink → adjusting and fixing the screw rod to control the sinking speed;
d, when the sunk well is sunk to have deviation, the sunk well attitude data monitoring collector transmits data into the control cabinet, the control system closes the mud cutting high-pressure water nozzle, independently starts the deviation rectifying high-pressure water nozzle to adjust the soil cutting direction until the sunk well attitude is adjusted to be normal, closes the deviation rectifying high-pressure water nozzle and opens the mud cutting high-pressure water nozzle;
and e, in the final sinking stage of the open caisson, adjusting the screw rod to lift the vertical connecting frame, controlling the final sinking speed and the continuous sinking amount, and finishing the sinking operation of the open caisson.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810197306.9A CN108360544B (en) | 2018-03-10 | 2018-03-10 | Automatic sinking device for open caisson and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810197306.9A CN108360544B (en) | 2018-03-10 | 2018-03-10 | Automatic sinking device for open caisson and construction method |
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| Publication Number | Publication Date |
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| CN108360544A CN108360544A (en) | 2018-08-03 |
| CN108360544B true CN108360544B (en) | 2020-03-17 |
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| CN201810197306.9A Expired - Fee Related CN108360544B (en) | 2018-03-10 | 2018-03-10 | Automatic sinking device for open caisson and construction method |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610491B (en) * | 2018-11-07 | 2020-11-06 | 中交第二航务工程局有限公司 | Open caisson intelligent excavation device and method for carrying out open caisson excavation by using same |
| CN109372000A (en) * | 2018-11-20 | 2019-02-22 | 中交第二航务工程局有限公司 | Native stage apparatus is efficiently taken under complex geological condition sinking well water |
| CN110644517B (en) * | 2019-08-29 | 2021-05-25 | 中交第二航务工程局有限公司 | Open caisson bulkhead partition integrated excavation adjusting method |
| CN112663648A (en) * | 2020-12-23 | 2021-04-16 | 温州大学 | Cutting edge angle soil sampling equipment in open caisson and using method thereof |
| CN117127639A (en) * | 2021-01-18 | 2023-11-28 | 何春远 | Method for manufacturing open caisson by tunneling open caisson sinking device and application thereof |
| CN113235632B (en) * | 2021-04-14 | 2022-07-08 | 中铁二十四局集团有限公司 | Open caisson sinking device capable of automatically correcting deviation in real time and construction method |
| CN113846664B (en) * | 2021-08-05 | 2023-03-10 | 上海市基础工程集团有限公司 | Continuous soil-taking and sinking machine for non-drainage open caisson |
| CN114737591A (en) * | 2022-04-12 | 2022-07-12 | 交通运输部上海打捞局 | Cutter-suction type end plate auxiliary sinking system suitable for box-type end plate |
| CN115262619B (en) * | 2022-09-28 | 2022-12-27 | 三亚宏岩岩土工程有限公司 | Special suction type caisson foundation structure for assembly type ocean engineering |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0517954A (en) * | 1991-07-08 | 1993-01-26 | Shimizu Corp | Open type caisson method |
| CN100567660C (en) * | 2007-12-26 | 2009-12-09 | 南京工业大学 | The sink well given force construction method of house deviation rectifying |
| CN106193080B (en) * | 2016-08-09 | 2018-10-09 | 扬州工业职业技术学院 | A kind of well sinking device and its construction method |
| CN107700511A (en) * | 2017-09-06 | 2018-02-16 | 中国水利水电第十工程局有限公司 | Open caisson and its construction method under the conditions of a kind of phreatic high |
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Granted publication date: 20200317 Termination date: 20210310 |