CN119411617A - A sinking method of "active regulation" of passive sinking of urban caisson - Google Patents
A sinking method of "active regulation" of passive sinking of urban caisson Download PDFInfo
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- CN119411617A CN119411617A CN202411670111.3A CN202411670111A CN119411617A CN 119411617 A CN119411617 A CN 119411617A CN 202411670111 A CN202411670111 A CN 202411670111A CN 119411617 A CN119411617 A CN 119411617A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 238000009434 installation Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 52
- 239000002002 slurry Substances 0.000 claims description 28
- 239000002689 soil Substances 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 19
- 239000010865 sewage Substances 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 13
- 239000006185 dispersion Substances 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 239000011372 high-strength concrete Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000003673 groundwater Substances 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 abstract description 20
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 230000001276 controlling effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 6
- 238000004062 sedimentation Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000008213 purified water Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 244000261422 Lysimachia clethroides Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The invention relates to the field of building installation and discloses a sinking method for passive sinking of an urban open caisson, which comprises a regulating and controlling system, wherein the regulating and controlling system comprises a protective box which is arranged on the ground, a circulating mechanism is arranged in the protective box, a connecting mechanism is connected with the circulating mechanism, one side of the connecting mechanism is connected with a plurality of mutually spliced sinking mechanisms, an open caisson main body is provided with a plurality of transversely arranged grouting holes in the middle, an inner pipe is connected in the grouting holes, and a plurality of forward vertical holes are formed in the open caisson main body, and vertical pipes are connected in the vertical holes.
Description
Technical Field
The invention relates to the field of building installation, in particular to a sinking method for passive sinking 'active regulation' of an urban open caisson.
Background
The open caisson is a tubular structure, which is formed by excavating soil in the well, overcoming the friction resistance of the well wall by self gravity, sinking to the designed elevation, sealing the bottom by concrete and filling the well hole, so that the open caisson becomes the foundation of bridge abutment or other structures. The method is generally used for constructing the enclosure device of foundation pits, sewage pump stations, large equipment foundations, civil air defense shelters, shield assembly wells, underground lanes and station hydraulic foundations of large piers. In the engineering, the geological condition of a construction site of a pipe-jacking working well and the surrounding environment are complex, the perpendicularity and the stability of the open caisson are difficult to control in the construction process, the deformation characteristic of the surrounding soil of the open caisson is difficult to master in the actual construction process, the sedimentation problem of the surrounding soil caused by the deformation characteristic is common in the open caisson construction process, and in addition, when the soil taking work of sinking of the open caisson is carried out in soil layers in special areas, the situation that the surrounding soil flows into the well due to the increase of the height difference of soil surfaces inside and outside the well possibly occurs, so that the soil at the bottom of the well bulges, the sinking difficulty of the open caisson occurs, and the follow-up construction is influenced.
Disclosure of Invention
The invention provides an active control sinking method for passive sinking of an urban open caisson, which aims to solve the technical problem of inconvenient construction and adjustment.
The invention adopts the following technical scheme that the sinking method for passive sinking active regulation of the urban open caisson comprises the following steps:
S1, geological investigation, namely knowing information such as underground soil layer distribution, underground water level and the like;
s2, structural design, namely designing proper size, shape and wall thickness of a main body of the open caisson according to geological conditions, and excavating a foundation pit in the earlier stage on the ground;
S3, installing a bench ring in the foundation pit, and simultaneously hoisting the bottommost open caisson body to realize connection, and enabling the open caisson body to descend by utilizing self gravity;
S4, installing a next layer of open caisson, and hoisting and installing an upper regulation and control system on the open caisson for connection;
s5, performing corresponding point position fine adjustment according to measurement to balance the open caisson so as to achieve specified parameters;
S6, injecting water through a high-pressure pipe, flushing and softening soil at the bottom, and enabling the open caisson main body to continuously sink;
S7, removing part of the regulation and control system, installing a new open caisson main body on the top open caisson, sleeving the removed regulation and control system after the installation is completed, and carrying out the next round of open caisson;
s8, grouting at the position with deviation through measurement continuously, and fine adjustment is carried out;
S9, removing part of the regulation and control system, and sealing and filling high-strength concrete in the corresponding hole.
The regulation and control system comprises a protective box, a connecting mechanism, a regulating mechanism and a regulating mechanism, wherein the protective box is arranged on the ground, and a circulating mechanism is arranged in the protective box;
As a further improvement of the scheme, the sedimentation mechanism comprises an open caisson body, wherein a plurality of grouting holes which are transversely arranged are arranged in the open caisson body, an inner pipe is connected in the grouting holes, a plurality of vertical holes which are arranged in the forward direction are arranged on the open caisson body, and the vertical pipes are connected in the vertical holes;
The connecting unit comprises a third connecting sleeve fixedly connected with one end of an inner pipe, an outer pipe connected with the other end of the third connecting sleeve, a fourth connecting sleeve connected with the other end of the outer pipe, a slurry pipe rotationally sleeved in the middle of the fourth connecting sleeve, a first connecting sleeve rotationally connected with the top end of the slurry pipe, an extraction pipe arranged in the slurry pipe, a supporting rod fixedly connected with the slurry pipe and fixedly connected with the outer side of the extraction pipe, a second connecting sleeve rotationally sleeved with one end of the extraction pipe, and an excavating unit connected with the extraction pipe at the bottommost part.
The excavating unit comprises a table-shaped ring, a rotating column, a power box and a power output end, wherein the table-shaped ring is fixedly connected with a plurality of conducting pipes, one end of each conducting pipe extends into a vertical hole at the bottom and is connected with the vertical hole, the rotating column is rotatably sleeved at the bottom end of each conducting pipe, the outer side of the rotating column is fixedly connected with a plurality of fixed nozzles, the power box is fixedly connected in the rotating column, the input end of the power box is connected with a feeding pipe communicated with the conducting pipes, the power output end of the power box is in transmission connection with a transmission box II, the output end of the transmission box II is in transmission connection with a transmission box I, the output end of the transmission box I is connected with a pumping column, and the other end of the pumping column is fixedly connected with a moving nozzle which is in sliding sleeve connection with the fixed nozzles.
As a further improvement of the scheme, one side of the fixed nozzle is provided with an injection hole, the cross section of the bench-shaped ring adopts a stepped shape, and the liquid output end of the power box is positioned in the bench-shaped ring.
As a further improvement of the scheme, the connecting mechanism comprises a dispersing ring, a dispersing sleeve and a suction pipe, wherein the dispersing ring is connected with a vertical pipe at the top, one side of the dispersing ring is connected with a high-pressure pipe connected with a circulating mechanism, one side of the dispersing sleeve is connected with a first connecting sleeve at the top, one side of the dispersing sleeve is connected with a slurry pipe, the top of the dispersing sleeve is connected with a sealing cover, one end of the suction pipe is connected with the circulating mechanism, and the other end of the suction pipe is connected with a second connecting sleeve at the top.
As a further improvement of the scheme, the outer side of the dispersing sleeve is sleeved with the stabilizing ring, the outer side of the stabilizing ring is fixedly connected with a plurality of telescopic rods, and one end of each telescopic rod is connected with a supporting column.
The circulating mechanism comprises a sewage pump, a draft tube, a clear water tube, a clean water end and a series-connection tube, wherein the sewage pump is fixedly connected with a protective box, the input end of the sewage pump is connected with a suction tube, the output end of the sewage pump is connected with a lifting tube, the other end of the lifting tube is connected with a filter box fixedly connected with the protective box, the draft tube is connected with the filter box, the other end of the draft tube is connected with a filter press positioned in the protective box, one end of the clear water tube is connected with the bottom of the filter box, the other end of the clear water tube is connected with a purifying box fixedly connected with the protective box, the clear water end of the filter press is connected with the purifying box, one end of the series-connection tube is connected with the purifying box, the other end of the series-connection tube is connected with a supercharger positioned in the protective box, and one end of the supercharger is connected with the high-pressure tube.
As a further improvement of the scheme, the slurry pipe is filled with 200-1000 bar of water, and the grouting slurry is concrete or polymer filling material.
Compared with the prior art, the invention has the beneficial effects that:
1. Through mutually supporting between a plurality of devices, can be convenient carry out the open caisson work, can carry out the multiposition at any time at open caisson in-process simultaneously, the adjustment of multidimension degree makes things convenient for the regulation of open caisson main part posture, guarantees going on of open caisson work to can simplify the excavation work, reduce the degree of difficulty of whole work.
2. Through the water flow circulation injection, the open caisson with smaller point positions can be adapted while water resources are saved, the laying area of peripheral equipment is reduced, the open caisson with different environments and different terrains can be adapted, the adaptability is wide, and the application is convenient.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic view of the overall front side structure of the present invention;
FIG. 3 is a schematic view of the rear side overall structure of the present invention;
FIG. 4 is a schematic view of the front side structure of the circulation mechanism;
FIG. 5 is a schematic view of the rear side structure of the circulation mechanism;
FIG. 6 is a schematic top view of the open caisson body;
FIG. 7 is a schematic view of the bottom structure of the open caisson body;
FIG. 8 is a schematic diagram of a connection mechanism;
FIG. 9 is a schematic diagram of the excavation unit;
FIG. 10 is a schematic view of a partial structure of an excavating unit;
FIG. 11 is a schematic view, partially in section, of an excavation unit;
fig. 12 is a partial bottom schematic view of the excavation unit.
Main symbol description:
01. The device comprises a protective box, a suction pipe, a 03 slurry pipe, a 04 dispersing ring, a 05 supporting column, a 06 telescopic rod, a 07 vertical pipe, a 08 grouting hole, a 09 bench ring, a 11 sinking well main body, a 12 stabilizing ring, a 13 high-pressure pipe, a 14, a controller, a 15, a water tank, a 16, a filter box, a 17, a sewage pump, a 20, a booster, a 21, a cross pipe, a 22, a purifying box, a 23, a filter press, a 24, a honeycomb duct, a 26, a lifting pipe, a 27, a dispersing sleeve, a 28, a sealing cover, a 29, an inner pipe, a 30, an outer pipe, a 31, a first connecting sleeve, a 32, a second connecting sleeve, a 33, a pumping pipe, a 34, a third connecting sleeve, a 35, a slurry pipe, a 36, a fourth connecting sleeve, a 38, a vertical hole, a 39, a conducting pipe, a 40, a rotating column, a 41, a fixed nozzle, a 42, a moving nozzle, a 43, a jet hole, a 44, a first transmission box, a 45, a power box, a 46, a second transmission box, a 47, a pumping column, a 48 and a feeding pipe.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
Examples:
1-12, a sinking method for passive sinking of an urban open caisson is realized based on a regulating and controlling system, wherein the regulating and controlling system comprises a protective box 01, a circulating mechanism and a water source, wherein the protective box 01 is arranged on the ground, the circulating mechanism is arranged in the protective box 01 for protection and limited support, and the circulating mechanism performs corresponding water circulation work to reduce the use of the water source;
The connecting mechanism is connected with the circulating mechanism, one side of the connecting mechanism is connected with a plurality of mutually spliced sedimentation mechanisms, the connecting mechanism is connected, the whole penetration is ensured, and the sedimentation mechanisms carry out main sedimentation and limit work on the periphery.
The sedimentation mechanism comprises:
the open caisson body 11, a plurality of grouting holes 08 which are transversely arranged are formed in the middle of the open caisson body 11, an inner pipe 29 is connected in the grouting holes 08, a plurality of vertical holes 38 which are arranged in the forward direction are formed in the open caisson body 11, vertical pipes 07 are connected in the vertical holes 38, the open caisson body 11 is made of reinforced concrete materials and is used for protecting the periphery of a foundation pit, the grouting holes 08 and the vertical holes 38 facilitate the installation of the inner pipe 29 and the vertical pipes 07, the inner pipe 29 and the vertical pipes 07 are made of steel materials and are connected, and meanwhile, certain rigid support is carried out after the installation is completed;
and a connection unit provided in the open caisson body 11, the connection unit being connected to the top.
The connection unit includes:
The third connecting sleeve 34 is fixedly connected with one end of the inner pipe 29, the other end of the third connecting sleeve 34 is connected with the outer pipe 30, the other end of the outer pipe 30 is connected with the fourth connecting sleeve 36, the slurry pipe 35 is rotationally sleeved in the middle of the fourth connecting sleeve 36, the first connecting sleeve 31 is rotationally connected to the top end of the slurry pipe 35, the third connecting sleeve 34 is connected with the outer pipe 30, the fourth connecting sleeve 36 and the slurry pipe 35 are further connected, the fourth connecting sleeve 36 can rotate outside the third connecting sleeve 35, and meanwhile, the fourth connecting sleeve 36 can be matched with bending or deformation of the outer pipe 30, so that the third connecting sleeve 34 can be connected with different pipes 29 to realize conducting grouting, and the third connecting sleeve 30 adopts a deformable pipeline similar to a gooseneck;
The extracting pipe 33 is arranged in the slurry pipe 35, the outer side of the extracting pipe 33 is fixedly connected with a supporting rod fixedly connected with the slurry pipe 35, one end of the extracting pipe 33 is rotatably sleeved with the second connecting sleeve 32, the extracting pipe 33 is conducted, and the connection ensured by the second connecting sleeve 32 is performed, so that the plurality of extracting pipes 33 are connected;
And an excavating unit connected to the bottommost extraction pipe 33, the excavating unit excavating the main body.
The excavating unit includes:
The platform-type ring 09 is fixedly connected with a plurality of conducting pipes 39, one ends of the conducting pipes 39 extend into the vertical holes 38 at the bottom to be connected, the periphery of the platform-type ring 09 is shielded, the conducting pipes 39 are communicated with the vertical holes 38 in the open caisson main body 11, high-pressure water is conducted, and subsequent transfer is conducted;
The rotary column 40 is rotatably sleeved at the bottom end of the conducting tube 39, the outer side of the rotary column 40 is fixedly connected with a plurality of fixing nozzles 41, the rotary column 40 ensures the installation of the fixing nozzles 41 and the subsequent high-pressure injection;
The power box 45 is fixedly connected in the rotary column 40, the input end of the power box 45 is connected with the feeding pipe 48 communicated with the conducting pipe 39, the power output end of the power box 45 is in transmission connection with the transmission box II 46, the output end of the transmission box II 46 is in transmission connection with the transmission box I44, the output end of the transmission box I44 is connected with the pumping column 47, the other end of the pumping column 47 is fixedly connected with the moving nozzle 42 which is in sliding sleeve connection with the fixed nozzle 41, high-pressure water flow introduced into the vertical hole 38 enters the power box 45 after passing through the conducting pipe 39 and the feeding pipe 48, paddles are installed in the power box 45 and rotate under the pushing of water flow, the power output end of the paddles is further pushed to drive, the power is output, meanwhile, the high-pressure water flows overflow through the outlet of the power box 45 and enter the rotary column 40, further is sprayed through the fixed nozzle 41 and the moving nozzle 42, the surrounding soil is subjected to high-pressure flushing, the soil structure is softened, the sinking of the sinking well main body 11 is enabled, meanwhile, the power is driven to move the pumping column 47 through the output of the transmission box II 46 and the like, and the paddle is driven to move back and forth, and the peripheral movement is further driven to periodically impact the moving nozzle 42.
One side of the fixed nozzle 41 is provided with an injection hole 43, the cross section of the platform-shaped ring 09 adopts a ladder shape, and the liquid output end of the power box 45 is positioned in the platform-shaped ring 09.
The connecting mechanism comprises:
The dispersing ring 04 is connected with the vertical pipe 07 at the top, one side of the dispersing ring 04 is connected with the high-pressure pipe 13 connected with the circulating mechanism, the bottom of the dispersing ring 04 is provided with a mounting hole, the mounting hole is matched with the vertical pipe 07, the mounting between the dispersing ring 04 and the vertical pipe 07 is realized, and the high-pressure pipe 13 is filled with high-pressure water to supply water;
The dispersing sleeve 27 is connected with the first connecting sleeve 31 at the top, one side of the dispersing sleeve 27 is connected with a slurry pipe 03, the top of the dispersing sleeve 27 is connected with a sealing cover 28, the dispersing sleeve 27 is sleeved and connected with the first connecting sleeve 31 and the extracting pipe 33, the slurry pipe 03 is connected with an external device for supplying slurry, and then grouting is carried out at a corresponding position, so that the angle of the open caisson main body 11 is adjusted;
One end of the suction pipe 02 is connected with the circulating mechanism, the other end of the suction pipe 02 is connected with the second connecting sleeve 32 at the top, the suction pipe 02 pumps water with the circulating mechanism, water flows, and sludge transfer is achieved.
The outside of dispersion cover 27 has cup jointed stable circle 12, and the outside fixedly connected with of stable circle 12 has a plurality of telescopic links 06, and telescopic link 06's one end is connected with support column 05, and stable circle 12 is connected stably, and telescopic link 06 can stretch out and draw back, and inside is provided with the sensor simultaneously, carries out the measurement of flexible volume, and then the pipeline carries out auxiliary stay.
The circulation mechanism includes:
The sewage pump 17 is fixedly connected with the protective box 01, the input end of the sewage pump 17 is connected with the suction pipe 02, the output end of the sewage pump 17 is connected with the lifting pipe 26, the other end of the lifting pipe 26 is connected with the filter box 16 fixedly connected with the protective box 01, the sewage pump 17 is correspondingly connected and pumped, so that bottom sludge is transferred, enters the filter box 16 through the lifting pipe 26, a filter plate is arranged in the filter box 16, water is filtered, the primarily filtered sludge enters the filter press 23 through the guide pipe 24, the guide pipe 24 is connected with the filter box 16, the other end of the guide pipe 24 is connected with the filter press 23 positioned in the protective box 01, one end of the clear water pipe is connected with the bottom of the filter box 16, the other end of the clear water pipe is connected with the purifying box 22 fixedly connected with the protective box 01, and the clear water end of the filter press 23 is connected with the purifying box 22, and water is transported through the clear water pipe, and then the purified water in the filter press 23 enters the purifying box 22 through the filter box 16, and finally filtered;
The serial pipe 21, its one end is connected with purifying box 22, and the other end is connected with the booster 20 that is located the protective housing 01, and the one end of booster 20 is connected with high-pressure pipe 13, and the water after the filtering of purifying box 22 then goes into high-pressure pipe 13 through the extraction and the pressurization of booster 20, transports, is provided with high-pressure pump and booster in the booster 20, carries out extraction and pressure boost.
The water tank 15 and the controller 14 are connected in the protective box 01, one side of the water tank 15 is connected with a one-way pipe connected with the purifying box 22, the one-way pipe is connected with a flow control valve and a one-way valve, water is stored in the water tank 15 for providing early water, and the controller 14 performs data processing and signal transmission on the whole.
The implementation principle of the embodiment of the application is as follows: during working, the foundation layer is excavated, then the platform-shaped rings 09 are installed in the foundation pit, then the corresponding number of open caisson main bodies 11 are installed, the dispersing rings 04, the suction pipes 02 and the dispersing sleeves 27 are installed on the open caisson main bodies 11 at the top, connection is realized, then the power supply is switched on, external water is pumped through external water, enters the dispersing rings 04 through the high-pressure pipes 13, further enters the conducting pipes 39 through the plurality of vertical pipes 07 and the sealing covers 28, then enters the conducting pipes 48 and the power box 45, driving is realized, high-pressure water is sprayed through the rotary columns 40, the fixed nozzles 41 and the movable nozzles 42, so that soil is softened and dissolved, the open caisson main bodies 11 are lowered under the action of gravity, the pushing of the pumping columns 47 and the spraying of the spraying holes 43 are matched, the rotary columns 40 are rotated, and the movable nozzles 42 shake, realizing auxiliary work, mud water is flushed and stored in the open caisson main body 11, pumped by the sewage pump 17, the internal mud water enters the filter tank 16 through the extraction pipe 33, the suction pipe 02 and the lifting pipe 26 to carry out first heavy filtration, then the cement and soil enter the filter press 23 through the guide pipe 24 under the action of gravity to carry out filter pressing, the soil is primarily dried, then loaded and transported, the purified water in the filter press 23 and the purified water in the filter tank 16 enter the purification tank 22 through the purification pipe to carry out filtration again, pumped and pressurized by the booster 20 are introduced into the high-pressure pipe 13 to realize circulation, thereby reducing the supplement of external water and saving water resources, after the open caisson main body 11 is sunk by a certain angle, the dispersion rings 04 and the dispersion sleeves 27 are removed, and then other prefabricated open caisson main bodies 11 are hoisted, the open caisson body 11 mounted on the top is then circularly operated by mounting the dispersion ring 04 and the dispersion jacket 27 until reaching a specified position, wherein the open caisson body 11 may be one or more at a time.
In the sinking process of the open caisson body 11, due to external factors, the open caisson body 11 is offset relatively, at this time, special slurry can enter the dispersing sleeve 27 through the slurry pipe 03 through external supply, then enter the external space of the open caisson body 11 through the extraction pipe 33, the external pipe 30, the connecting sleeve III 34 and the internal pipe 29, and are filled and supported, the designated position of the open caisson body 11 is adjusted, dynamic balance of the open caisson body 11 is guaranteed, and the process is simplified.
Example 2, the sinking method comprises the steps of:
S1, geological investigation, namely knowing information such as underground soil layer distribution, underground water level and the like;
S2, structural design, namely designing proper size, shape and wall thickness of the open caisson according to geological conditions, digging a foundation pit on the ground in the early stage, setting the size of the open caisson according to specific digging and supporting requirements, and prefabricating at a designated position to meet requirements;
S3, installing a bottom protection in the foundation pit, simultaneously hoisting the bottommost open caisson to realize connection, descending the open caisson by utilizing self gravity, and synchronously matching the bottom protection with the open caisson in size to perform early prefabrication;
S4, installing a next layer of open caisson, and hoisting and installing an upper regulation and control system on the open caisson for connection;
s5, performing corresponding point position fine adjustment according to measurement to balance the open caisson so as to achieve specified parameters;
S6, injecting water through a high-pressure pipe, flushing and softening soil at the bottom, and enabling the open caisson main body to continuously sink;
S7, removing part of the regulation and control system, installing a new open caisson main body on the top open caisson, sleeving the removed regulation and control system after the installation is completed, and carrying out the next round of open caisson;
s8, grouting at the position with deviation through measurement continuously, and fine adjustment is carried out;
S9, removing part of the regulation and control system, and sealing and filling high-strength concrete in the corresponding hole.
The slurry pipe 03 is filled with 200-1000 bar of water and the grouting slurry is concrete or polymer filling material.
The implementation principle of the embodiment of the application is as follows:
Through the corresponding sinking method, the corresponding sinking adjustment is further realized, the perpendicularity and stability of the open caisson main body 11 are ensured, and the subsequent use is ensured.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411670111.3A CN119411617A (en) | 2024-11-21 | 2024-11-21 | A sinking method of "active regulation" of passive sinking of urban caisson |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411670111.3A CN119411617A (en) | 2024-11-21 | 2024-11-21 | A sinking method of "active regulation" of passive sinking of urban caisson |
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| CN119411617A true CN119411617A (en) | 2025-02-11 |
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| CN202411670111.3A Pending CN119411617A (en) | 2024-11-21 | 2024-11-21 | A sinking method of "active regulation" of passive sinking of urban caisson |
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