CN212801491U

CN212801491U - Water-covered vacuum preloading device for silty clay foundation

Info

Publication number: CN212801491U
Application number: CN202020978187.3U
Authority: CN
Inventors: 叶明�; 何金星; 赵阳
Original assignee: Sinohydro Bureau 6 Co Ltd
Current assignee: Sinohydro Bureau 6 Co Ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2021-03-26
Anticipated expiration: 2030-06-02

Abstract

The utility model discloses a water-covering vacuum pre-compaction device for silty clay foundation, fixed mounting's annular curb plate on clay layer and clay layer, annular curb plate bottom fixed mounting has the base plate, it is equipped with the drainage post to run through the cover on the base plate, annular curb plate top is through first locking bolt fixedly connected with water proof membrane, the water proof membrane passes through second locking bolt and drainage post top fixed connection, the intercommunicating pore has been seted up to drainage post bottom. The utility model discloses in, owing to adopt plug-in type drainage column structure, realized the liquid discharge that the centre bore is convenient for will extrude behind the ballast, owing to adopted the packing pre-compaction liquid substitution structure again, realized that the water proof membrane extrudes the base plate and pushes down, is convenient for simultaneously between the centre bore department discharge waste liquid of central point after rush into pack in the pre-compaction liquid.

Description

Water-covered vacuum preloading device for silty clay foundation

Technical Field

The utility model relates to a ground pre-compaction equipment technical field especially relates to a water-covered vacuum pre-compaction device for silty clay ground.

Background

The vacuum preloading method is that a sand cushion layer is laid on the surface of a soft soil foundation to be reinforced, then a vertical drainage pipeline is buried, an airtight sealing film is used for isolating the sand cushion layer from the atmosphere, the end part of the sealing film is buried and pressed, and a vacuum pump or other vacuum means is used for vacuumizing through a water suction pipeline buried in the sand cushion layer to form the negative pressure under the film, so that the effective stress of the foundation is increased.

The vacuum preloading method is widely used in the conventional soft soil foundation hardening treatment, however, the conventional silty clay soil has the following defects in the vacuum preloading process, and most of the conventional methods still adopt surcharge preloading, dynamic compaction and the like, so that certain preloading data is wasted, the construction cost of a project is increased, and the construction period is prolonged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the water-covered vacuum preloading device for the silty clay foundation is provided for solving the problem of wasting preloading data during preloading.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a water-covering vacuum preloading device for silty clay foundation, fixed mounting's annular curb plate on clay layer and clay layer, annular curb plate bottom fixed mounting has the base plate, it is equipped with the drainage post to run through the cover on the base plate, annular curb plate top is through first locking bolt fixedly connected with water proof membrane, water proof membrane passes through second locking bolt and drainage post top fixed connection, the intercommunicating pore has been seted up to drainage post bottom.

As a further description of the above technical solution:

the base plate is provided with a through hole, and the through hole is in clearance fit with the drainage column.

As a further description of the above technical solution:

the center of the drainage column is provided with a center hole, and the waterproof membrane is provided with a membrane hole.

As a further description of the above technical solution:

the bottom end of the central hole is communicated with the communicating hole, and the membrane hole is communicated with the central hole.

As a further description of the above technical solution:

waterproof membrane bottom and base plate up end laminating butt, waterproof membrane top and annular curb plate top laminating butt, the cover is equipped with the filling pre-pressurized liquid on the waterproof membrane.

As a further description of the above technical solution:

the top height of the annular side plate is equal to that of the top of the drainage column.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, adopt plug-in type drainage post structure, owing to adopted annular curb plate bottom fixed connection's base plate, realized that the base plate extrudees to the clay layer of annular curb plate bottom, owing to adopted the through hole of seting up on the base plate again to and the clearance fit between through hole and the drainage post, realized inserting the drainage post in the clay layer below the base plate bottom, owing to adopted intercommunicating pore and the centre bore of seting up on the base plate, realized behind the ballast centre bore be convenient for the liquid discharge that will extrude simultaneously.

2. The utility model discloses in, the packing pressurized liquid substitution structure has been adopted, owing to adopted first locking bolt to the fixed connection between water proof membrane and the annular curb plate, and second locking bolt is to the fixed connection between water proof membrane and the drainage post, realized that the water proof membrane receives the fixed stay, again owing to adopted the butt of water proof membrane bottom and base plate, and the packing pressurized liquid that sets up on the water proof membrane, realized that water proof membrane extrusion base plate pushes down, be convenient for simultaneously between the central hole department discharge waste liquid back rush in the packing pressurized liquid, reduce the use of ballast.

Drawings

Fig. 1 shows a schematic top view structure provided according to an embodiment of the present invention;

fig. 2 shows a schematic structural diagram at a-a section provided according to an embodiment of the present invention;

fig. 3 shows a schematic structural diagram of a B-B cross section provided according to an embodiment of the present invention.

Illustration of the drawings:

1. filling a pre-pressing liquid; 2. an annular side plate; 3. a membrane pore; 4. a water-resistant film; 5. a first locking bolt; 6. a water drainage column; 7. a second locking bolt; 8. a communicating hole; 9. a clay layer; 10. a central bore; 11. a through hole; 12. a substrate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a water-covering vacuum preloading device for silty clay foundation, fixed mounting's annular curb plate 2 on clay layer 9 and

clay layer

9, 2 bottom fixed mounting of annular curb plate have base plate 12, it is equipped with drainage post 6 to run through the cover on the base plate 12, 2 tops of annular curb plate are through 5 fixedly connected with water proof membrane 4 of first locking bolt, water proof membrane 4 passes through second locking bolt 7 and 6 top fixed connection of drainage post, intercommunicating pore 8 has been seted up to 6 bottoms of drainage post, the drainage post 6 of being convenient for is discharged waste liquid through intercommunicating pore 8 in with clay layer 9.

Specifically, as shown in fig. 2, a through hole 11 is formed in the substrate 12, and the through hole 11 is in clearance fit with the drainage column 6, so that the bottom end of the drainage column 6 is inserted into the clay layer 9.

Specifically, as shown in fig. 2, a central hole 10 is formed in the center of the drainage column 6, and a membrane hole 3 is formed in the waterproof membrane 4, so that waste liquid in the drainage column 6 can be drained upwards.

Specifically, as shown in fig. 3, the bottom end of the central hole 10 is communicated with the communication hole 8, and the membrane hole 3 is communicated with the central hole 10, so that waste liquid is discharged between the drainage columns 6 to the upper side of the waterproof membrane 4 for ballast use.

Specifically, as shown in fig. 1, the bottom end of the waterproof membrane 4 is abutted with the upper end face of the base plate 12, the top end of the waterproof membrane 4 is abutted with the top end of the annular side plate 2, and the waterproof membrane 4 is sleeved with the filling pre-pressing liquid 1, so that the ballast is replaced by the filling pre-pressing liquid 1, and the cost and the operation period are reduced.

Specifically, as shown in fig. 2, the top height of the annular side plate 2 is equal to the top height of the drainage column 6, so as to facilitate the laying of the waterproof membrane 4.

The working principle is as follows: when the device is used, firstly, the base plate 12 fixedly connected with the bottom end of the annular side plate 2 is used for extruding the clay layer 9 at the bottom end of the annular side plate 2 through the base plate 12, then the drainage column 6 is inserted into the clay layer 9 below the bottom end of the base plate 12 through the through hole 11 formed in the base plate 12 and the clearance fit between the through hole 11 and the drainage column 6, and simultaneously, the extruded liquid is discharged after ballasting through the communication hole 8 and the central hole 10 formed in the base plate 12; secondly, through the fixed connection of first locking bolt 5 between to waterproof membrane 4 and annular curb plate 2, and second locking bolt 7 is to the fixed connection between waterproof membrane 4 and the drainage post 6, make waterproof membrane 4 receive fixed stay, the butt of 4 bottoms of rethread waterproof membrane and base plate 12, and the packing prepressing liquid 1 that sets up on the waterproof membrane 4, make waterproof membrane 4 extrusion base plate 12 push down, be convenient for simultaneously between 10 departments of centre bore discharge waste liquid of the department of discharging rush in packing prepressing liquid 1, reduce the use of ballast.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a water-covering vacuum preloading device for silty clay foundation, fixed mounting's annular curb plate (2) on clay layer (9) and clay layer (9), its characterized in that, annular curb plate (2) bottom fixed mounting has base plate (12), it is equipped with drainage post (6) to run through the cover on base plate (12), annular curb plate (2) top is through first locking bolt (5) fixedly connected with water proof membrane (4), water proof membrane (4) are through second locking bolt (7) and drainage post (6) top fixed connection, intercommunicating pore (8) have been seted up to drainage post (6) bottom.

2. The water-covering vacuum preloading device for the silty clay foundation as claimed in claim 1, wherein said base plate (12) is provided with through holes (11), said through holes (11) being in clearance fit with the drainage columns (6).

3. The water-covering vacuum preloading device for the silty clay foundation as claimed in claim 1, wherein a central hole (10) is opened at the center of the drainage column (6), and a membrane hole (3) is opened on the waterproof membrane (4).

4. A water-covering vacuum preloading device for a silty clay foundation as claimed in claim 3, characterized in that the bottom end of said central hole (10) is interconnected with the communication hole (8), and said membrane hole (3) is interconnected with the central hole (10).

5. The water-covering vacuum preloading device for the silty clay foundation as claimed in claim 1, characterized in that the bottom end of the waterproof membrane (4) is in abutting joint with the upper end surface of the base plate (12), the top end of the waterproof membrane (4) is in abutting joint with the top end of the annular side plate (2), and the waterproof membrane (4) is sleeved with the filling prepressing liquid (1).

6. The water-covered vacuum preloading device for the silty clay foundation as claimed in claim 1, characterized in that the top height of the annular side plate (2) is equal to the top height of the drainage column (6).