CN215252798U - Underwater vacuum preloading sealing film laying device - Google Patents
Underwater vacuum preloading sealing film laying device Download PDFInfo
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- CN215252798U CN215252798U CN202122855486.5U CN202122855486U CN215252798U CN 215252798 U CN215252798 U CN 215252798U CN 202122855486 U CN202122855486 U CN 202122855486U CN 215252798 U CN215252798 U CN 215252798U
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- sealing film
- skirt
- vacuum preloading
- sealing
- underwater
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- 238000007789 sealing Methods 0.000 title claims abstract description 86
- 239000012528 membrane Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002689 soil Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000004576 sand Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000011152 fibreglass Substances 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000002985 plastic film Substances 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 4
- 239000005060 rubber Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 239000003351 stiffener Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 10
- 239000004927 clay Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 7
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
Images
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to a soft clay ground of vacuum preloading method is handled the field, especially relates to a vacuum preloading seal membrane laying device under water, include: the cylindrical skirt is of a hollow cylindrical structure, and the upper part and the lower part of the cylindrical skirt are both of open structures; the sealing film is positioned above the cylinder skirt, and the edge of the sealing film is sealed and fixed with the inner wall of the cylinder skirt; the drainage filter tube is fixed below the sealing film; the sealing film is provided with a vacuumizing film outlet and a drain hole, the vacuumizing film outlet is connected with a vacuumizing device, the drain hole is connected with a water pump, the cylinder skirt drives the sealing film to sink when sinking underwater, and the sealing film is laid on a soft soil foundation when the cylinder skirt completely enters the soft soil foundation; the sealing performance of the laid sealing film to the soft soil foundation can be ensured, the laying and sealing of the sealing film in a complete underwater environment are really realized, the construction difficulty is reduced, the engineering period is shortened, and the application range of the underwater vacuum preloading process is greatly expanded.
Description
Technical Field
The utility model relates to a soft clay ground of vacuum preloading method is handled the field, especially relates to a vacuum preloading seal membrane laying device under water.
Background
The vacuum preloading method has wide application in the foundation treatment of soft clay. The horizontal drainage sand cushion layer and the vertical plastic drainage plate arranged in the soft clay foundation are paved, the airtight film sealing device is paved on the sand cushion layer, the drainage filter pipe embedded in the sand cushion layer is used, the vacuum pumping device is used for forming negative pressure in the soil body, and pore water in pores of the soil body is pumped out, so that the pore water pressure of the soil body is reduced, the effective stress is increased, the drainage consolidation of the soil body is generated, the post-construction settlement of the foundation is reduced, and the bearing capacity of the foundation is improved.
At present, the engineering cases of domestic underwater vacuum preloading are basically located in intertidal zones, but relevant procedures such as laying sealing films and sealing are carried out by utilizing the time of exposing a field out of the water surface when the tide level is low, so that the intertidal zone vacuum preloading is essentially onshore construction. And the construction project under the full water cannot be pushed.
In the existing underwater vacuum preloading construction process, the problems of laying and sealing an underwater sealing film are not involved, and the laying and underwater sealing problems of the sealing film are key steps of smoothly implementing the underwater vacuum preloading process, so that the floor use of the existing underwater vacuum preloading process is greatly limited.
SUMMERY OF THE UTILITY MODEL
To the weak point that exists among the above-mentioned prior art, the utility model provides a vacuum preloading seal membrane laying device under water that structural design is reasonable, realize that the seal membrane is laid and sealing performance is good.
The utility model provides an underwater vacuum preloading seal membrane laying device, include:
the cylindrical skirt is of a hollow cylindrical structure, and the upper part and the lower part of the cylindrical skirt are both of open structures;
the sealing film is positioned above the cylinder skirt, and the edge of the sealing film is sealed and fixed with the inner wall of the cylinder skirt;
the drainage filter pipe is fixed below the sealing film, after the sealing film is paved, the drainage filter pipe is contacted with the sand cushion layer, and the moisture in the soft soil foundation is discharged through the drainage filter pipe; the drainage filter pipe comprises a radial filter pipe and a circumferential filter pipe which are uniformly arranged below the sealing film and are communicated with each other, and the vacuumizing equipment transmits the vacuum degree to each part of the sand cushion layer below the sealing film through the vacuumizing film outlet and the drainage filter pipe;
wherein,
be provided with evacuation membrane mouth and wash port on the seal membrane, evacuation membrane mouth is connected with evacuating device, the wash port is connected with the water pump, the skirt drives when sinking the seal membrane sinks, until when the skirt gets into the soft soil foundation completely, the seal membrane is laid on the soft soil foundation.
The underwater vacuum preloading sealing film laying device in the technical scheme really realizes laying and sealing of the sealing film in a complete underwater environment, reduces construction difficulty, shortens engineering period, and greatly enlarges application range of the underwater vacuum preloading process.
In some embodiments of the present application, the skirt is internally provided with a first vertical stiffening rib to prevent deformation of the skirt during sinking.
In some embodiments of this application, the top of seal membrane is provided with the second stiffening rib, the second stiffening rib is truss-like or web plate formula stiffening rib, prevents that the seal membrane from violently warping at the in-process that sinks, takes place the damage, leads to later stage sealed relatively poor, brings inconvenience for later stage construction.
In some embodiments of the present application, the sealing film is a glass fiber reinforced plastic or steel plate, the skirt is a glass fiber reinforced plastic or steel plate, and the sealing film is welded or glued to the inner wall of the skirt and sealed.
In some embodiments of the present application, the sealing film is a plastic film or a rubber film, the skirt is a glass fiber reinforced plastic or a steel plate, and the sealing film is adhesively sealed on the inner wall of the skirt.
In some embodiments of this application, the diameter of skirt outwards enlarges 5m for follow-up structures ground, and the height of skirt is 3~5 meters, the diameter of seal membrane with the diameter looks adaptation of skirt guarantees that the seal membrane is laid and targets in place and guarantees the leakproofness.
In some embodiments of the present application, the positions of the vacuuming film outlet and the drain hole are replaced by positions on the sidewall of the upper portion of the skirt, the drain hole discharges water in the cavity of the skirt during sinking, and the vacuuming film outlet discharges water in the soft soil foundation during vacuum preloading.
In some embodiments of the present application, the evacuation device is a jet pump.
Based on the technical scheme, the underwater vacuum preloading sealing membrane laying device in the embodiment of the utility model has the advantages that the structure is simple, the laying of an underwater sealing membrane can be realized, the sealing performance of the sealing membrane on a soft soil foundation after the laying can be ensured, the underwater vacuum preloading is really realized, the operation in an intertidal zone can be realized, the underwater operation can also be realized, the engineering difficulty is reduced, the engineering period is shortened, and the application range of the underwater vacuum preloading technology is greatly expanded;
aiming at different soft soil foundations or different structure foundations, the sealing film can be made of flexible materials such as plastic films or rubber films and can also be made of rigid materials such as glass fiber reinforced plastics or steel plates, and the application range of the underwater vacuum preloading process is widened.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
FIG. 1 is a cross-sectional view of an embodiment of the underwater vacuum preloading sealing film laying apparatus of the present invention;
fig. 2 is a schematic view of the structure of the underwater vacuum preloading sealing film laying device according to an embodiment of the present invention;
fig. 3 is a schematic top view of an embodiment of the underwater vacuum preloading sealing film laying device of the present invention;
FIG. 4 is a schematic view of an embodiment of the underwater vacuum preloading sealing film laying apparatus of the present invention;
in the figure, the position of the upper end of the main shaft,
10. a skirt; 11. a cavity; 20. a sealing film; 21. vacuumizing a film outlet; 22. a drain hole; 23. a second stiffener; 30. a drainage filter tube; 31. a radial filter tube; 32. a circumferential filter pipe; 40. a sand cushion layer; 50. a plastic drainage plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only some, not all embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-3, the utility model discloses an embodiment's vacuum preloading seal membrane laying device under water includes:
the cylindrical skirt 10 is of a hollow cylindrical structure, and the upper part and the lower part of the cylindrical skirt are both of open structures;
the sealing film 20 is positioned above the cylinder skirt 10, and the edge of the sealing film 20 is sealed and fixed with the inner wall of the cylinder skirt 10;
the drainage filter pipe 30 is fixed below the sealing film 20, after the sealing film 20 is paved, the drainage filter pipe 30 is contacted with a sand cushion layer, and the moisture in the soft soil foundation is discharged through the drainage filter pipe 30;
the sealing film 20 is provided with a vacuumizing film outlet 21 and a drain hole 22, the vacuumizing film outlet 21 is connected with a vacuumizing device, the drain hole 22 is connected with a water pump, the skirt 10 drives the sealing film 20 to sink simultaneously when sinking, and the sealing film 20 is laid on the soft soil foundation when the skirt 10 completely enters the soft soil foundation.
The vacuum preloading seal membrane laying device under water in this embodiment, when sinking, will open the water pump and take out in the cavity 11 of skirt 10 continuous, when the laying device in this embodiment reachs the ground surface, because the reason of device self weight, the ground surface can be sunken to some lower extreme of skirt 10, because the water pump lasts work, water in the cavity 11 is taken out constantly, because the inside and outside pressure differential of cavity 11, skirt 10 sinks constantly and inserts inside the soft soil foundation, realize the sealed of ground, and simultaneously, seal membrane 20 accomplishes and lays.
The underwater vacuum preloading sealing film laying device in the embodiment does not need to be limited by construction conditions, can be constructed in an intertidal zone, can also be used for laying the sealing film under the underwater condition, and can also ensure the sealing performance of the sealing film on a soft soil foundation after laying, so that the underwater vacuum preloading is really realized, the engineering difficulty is reduced, the engineering period is shortened, and the application range of the underwater vacuum preloading technology is greatly enlarged.
The drain strainer 30 includes a radial strainer 31 and a circumferential strainer 32 which are uniformly arranged below the sealing film 20 and communicate with each other, as shown in fig. 2. Radial chimney filter 31 includes radial water pipe and the cladding is at the filter cloth in the radial water pipe outside, and hoop chimney filter 32 includes the hoop water pipe and wraps up at the outside filter cloth of hoop water pipe, and radial water pipe and hoop water pipe go up to distribute has a plurality of inlet openings, and the filter cloth filters impurity such as silt.
In the construction, need lay the sand bed course in advance, then beat in the soft soil foundation and establish the plastics drain bar, seal membrane 20 lays the completion back, and during vacuum preloading, the water pump stop work, and evacuation equipment opens, because evacuation equipment's effect, transmits the vacuum to each position of sealed under-film sand bed course 40, and the water in the soft soil foundation flows to the sand bed course along plastics drain bar, discharges through evacuation play membrane mouth 21 behind drainage filter tube 30.
The skirt 10 is internally provided with first vertical stiffening ribs (not shown) to prevent deformation of the skirt during sinking. The top of seal membrane 20 is provided with second stiffening rib 23, and second stiffening rib 23 is truss-like or web plate formula stiffening rib, as shown in fig. 1, 3, prevents that seal membrane 20 from violently warping at the in-process that sinks, takes place the damage, leads to later stage sealed relatively poor, brings the inconvenience for later stage construction.
In one embodiment of the present application, the sealing film 20 is made of rigid material such as glass fiber reinforced plastic or steel plate, the skirt 10 is made of glass fiber reinforced plastic or steel plate, and the rigid sealing film 20 is welded or glued to the inner wall of the skirt 10 and sealed. The drainage filter tube 30 is fixed on the sealing film 20 through a bracket, and the sealing film 20 is made of rigid material, so that the bracket is a rigid bracket, and is convenient to connect and fix.
In another embodiment of the present application, the sealing film 20 is made of a soft material such as a plastic film or a rubber film, the skirt 10 is made of glass fiber reinforced plastics or a steel plate, and the sealing film 20 is bonded and sealed to the inner wall of the skirt 10 by an adhesive. The drainage filter tube 30 is fixed on the sealing film 20 through a support, and the support adopts a flexible hanging bracket because the sealing film 20 is made of flexible materials, so that the flexible material and the rigid material can be conveniently connected and fixed.
When the sealing film laying device of the embodiment is applied, the diameter of the skirt 10 is 5m of the outward expansion of the foundation of a subsequent structure, and the diameter of the sealing film 20 is matched with that of the skirt 10, so that the laying of the sealing film 20 in place is ensured, and the sealing performance is ensured.
In another embodiment of the present application, the evacuation film outlet 21 and the drainage hole 22 are disposed on the upper side wall of the skirt 10, the drainage hole 22 drains water in the cavity 11 of the skirt 10, and the evacuation film outlet 21 drains moisture in the soft soil foundation.
In the vacuum preloading process, the vacuumizing device pumps air in the soft soil foundation through the vacuumizing film outlet 21, in the embodiment, the vacuumizing device is a jet pump, and the processing time is determined according to the permeability coefficient of the soft soil and is about 3-4 months.
Finally, it should be noted that: the embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (8)
1. The utility model provides an underwater vacuum preloading sealing film laying device which characterized in that: the method comprises the following steps:
the cylindrical skirt is of a hollow cylindrical structure, and the upper part and the lower part of the cylindrical skirt are both of open structures;
the sealing film is positioned above the cylinder skirt, and the edge of the sealing film is sealed and fixed with the inner wall of the cylinder skirt;
the drainage filter pipe is fixed below the sealing film, after the sealing film is laid, the drainage filter pipe is in contact with the sand cushion layer, moisture in the soft soil foundation is discharged through the drainage filter pipe, and the drainage filter pipe comprises a radial filter pipe and a circumferential filter pipe which are uniformly arranged below the sealing film and are communicated with each other;
wherein,
be provided with evacuation membrane mouth and wash port on the seal membrane, evacuation membrane mouth is connected with evacuating device, the wash port is connected with the water pump, the skirt drives when sinking the seal membrane sinks, until when the skirt gets into the soft soil foundation completely, the seal membrane is laid on the soft soil foundation.
2. The underwater vacuum preloading sealing film laying apparatus of claim 1, wherein the skirt is internally provided with vertical first stiffening ribs.
3. The underwater vacuum preloading sealing membrane paving device of claim 2, wherein a second stiffening rib is provided above the sealing membrane, the second stiffening rib being a truss or web stiffener.
4. The underwater vacuum preloading sealing film laying device as claimed in claim 1 or 3, wherein the sealing film is a glass fiber reinforced plastic plate or a steel plate, the skirt is a glass fiber reinforced plastic or a steel plate, and the sealing film is welded or glued on the inner wall of the skirt and sealed.
5. The underwater vacuum preloading sealing film laying device as claimed in claim 1 or 3, wherein the sealing film is a plastic film or a rubber film, the skirt is a glass fiber reinforced plastic or a steel plate, and the sealing film is bonded and sealed on the inner wall of the skirt.
6. The underwater vacuum preloading sealing film laying device as claimed in claim 1, wherein the diameter of the skirt is 5m of outward expansion of a subsequent structure foundation, the height of the skirt is 3-5 m, and the diameter of the sealing film is matched with that of the skirt.
7. The underwater vacuum preloading sealing film laying device as claimed in claim 1, wherein the positions of the vacuum-pumping film outlet and the drain hole are replaced by being arranged on the upper side wall of the skirt.
8. The underwater vacuum preloading sealing film laying apparatus of claim 1, wherein the vacuum pumping device is a jet pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122855486.5U CN215252798U (en) | 2021-11-22 | 2021-11-22 | Underwater vacuum preloading sealing film laying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122855486.5U CN215252798U (en) | 2021-11-22 | 2021-11-22 | Underwater vacuum preloading sealing film laying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215252798U true CN215252798U (en) | 2021-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122855486.5U Active CN215252798U (en) | 2021-11-22 | 2021-11-22 | Underwater vacuum preloading sealing film laying device |
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| Country | Link |
|---|---|
| CN (1) | CN215252798U (en) |
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2021
- 2021-11-22 CN CN202122855486.5U patent/CN215252798U/en active Active
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