CN207553077U - Soft Ground Improved By Vacuum Preloading structure - Google Patents

Abstract

The utility model relates to the field of construction engineering structures, in particular to a vacuum preloaded foundation structure; it includes a cross drainage board, a water filter layer, a blown-filled sand layer, a soft soil foundation, a triangular sandbag filling block and a sealing film; the blown-filled sand The layer covers the surface of the soft soil foundation, the water filter layer is set inside the dredging sand layer, and the sealing film is set on the side of the dredging sand layer away from the soft soil foundation; the cross drainage board is set inside the soft soil foundation, and the cross drainage The board extends out of the soft soil foundation along the height direction of the soft soil foundation and connects with the water filter layer; the cross drainage board includes a first drainage board and a second drainage board, the first drainage board and the second drainage board are arranged crosswise, and the first drainage board The intersection with the second drainage board is an intersection, and the triangular sandbag filling block is arranged inside the soft soil foundation, and the triangular sandbag filling block is located on both sides of the intersection in the height direction of the soft soil foundation; it can improve the bearing capacity of the foundation, So that the soil is not consolidated enough, the soft foundation is not easy to sink.

Description

Vacuum preloaded foundation structure

technical field

The utility model relates to the field of building engineering structures, in particular to a vacuum preloaded foundation structure.

Background technique

Compared with other foundation treatment methods, vacuum preloading construction technology has many advantages such as low cost, strong site practicability, wide application range, and environmental protection construction. It plays an important role in alleviating the land shortage in coastal areas of our country and realizing the integration and utilization of resources. Vacuum preloading is suitable for surface reinforcement of non-consolidated or under-consolidated weak soil foundations, and is suitable for dealing with saturated cohesive soil foundations such as muddy soil, silt and flushing soil. The general reinforcement depth can reach 10 meters. With the technology and materials With the continuous development of equipment, the current processing depth can reach more than 20 meters. In many coastal areas of our country, the thickness of Quaternary marine sedimentary layer is large, the particle size of the soil is fine, the natural moisture content is high, and the porosity is large. After vacuum preloading, the bearing capacity can be improved. However, the improved bearing capacity of the existing technology is limited, and there are still problems such as poor vacuum efficiency and easy subsidence of the foundation waiting for improvement.

Utility model content

The purpose of this utility model is to provide a vacuum preloaded foundation structure, which can improve the bearing capacity of the foundation, so that the soil is not consolidated and the soft foundation is not easy to sink, especially the vacuum preloaded foundation structure can avoid Gradually loosen under long-term water erosion, that is, to improve the solidity of the foundation, and to maintain a consolidated state for a long time.

Embodiments of the utility model are achieved in that:

A vacuum preloaded foundation structure, which includes a cross drainage board, a water filter layer, a dredging sand layer, a soft soil foundation and a triangular sandbag filling block.

The dredger-fill sand layer covers the surface of the soft soil foundation, and the water filter layer is arranged inside the dredge-fill sand layer.

The cross drainage board is arranged inside the soft soil foundation, and the cross drainage board extends out of the soft soil foundation along the height direction of the soft soil foundation to connect with the water filter layer.

The cross drainage board includes a first drainage board and a second drainage board, the first drainage board and the second drainage board are arranged crosswise, and the intersection of the first drainage board and the second drainage board is an intersection, and the triangular sandbag filling block is arranged on a soft The interior of the soil foundation, and the triangular sandbag filling blocks are located on both sides of the intersection in the height direction of the soft soil foundation.

In a preferred embodiment of the present utility model:

A rectangular sandbag filling block is also provided inside the soft soil foundation, and the rectangular sandbag filling block is located on both sides of the intersection in the width direction of the soft soil foundation.

In a preferred embodiment of the present utility model:

The two triangular sandbag filling blocks located above and below the intersection are mirror symmetrical.

In a preferred embodiment of the present utility model:

The above-mentioned vacuum preloaded foundation structure also includes a first geotextile, and the first geotextile is arranged on the side of the dredged sand layer away from the soft soil foundation.

In a preferred embodiment of the present utility model:

The above-mentioned triangular sandbag filling block includes a first side wall, a second side wall, a third side wall, a bottom wall and a top wall, and the first side wall, the second side wall and the third side wall are connected in sequence, and are surrounded to form a sand filling space, the three sides of the bottom wall are respectively connected to one end of the first side wall, the second side wall and the third side wall, and the three sides of the top wall are respectively connected to the first side wall, the second side wall and the third side wall end away from the bottom wall.

In a preferred embodiment of the present utility model:

The above-mentioned first side wall includes a first frame, a second frame, a third frame, a fourth frame and a grid plate, and the first frame, the second frame, the third frame and the fourth frame are connected in sequence to form a grid plate arrangement space, the four sides of the grid plate are respectively connected to the first frame, the second frame, the third frame and the fourth frame.

In a preferred embodiment of the present utility model:

The above-mentioned first side wall also includes a second geotextile, and the second geotextile covers the surface of the grid plate.

In a preferred embodiment of the present utility model:

The above-mentioned second geotextile is covered on the side of the grid plate facing the sand-filled space.

In a preferred embodiment of the present utility model:

The water filter layer is provided with a water filter pipe, and the cross drainage board is connected to the water filter pipe.

A vacuum preloaded foundation structure, which comprises a cross drainage board, a water filter layer, a dredging sand layer, a soft soil foundation, a triangular sandbag filling block and a sealing membrane.

The dredger-fill sand layer covers the surface of the soft soil foundation, the water filter layer is arranged inside the dredge-fill sand layer, and the sealing film is arranged on the side of the dredge-fill sand layer away from the soft soil foundation.

The cross drainage board is arranged inside the soft soil foundation, and the cross drainage board extends out of the soft soil foundation along the height direction of the soft soil foundation to connect with the water filter layer.

The cross drainage board includes a first drainage board and a second drainage board, the first drainage board and the second drainage board are arranged crosswise, and the intersection of the first drainage board and the second drainage board is an intersection, and the triangular sandbag filling block is arranged on a soft The interior of the soil foundation, and the triangular sandbag filling blocks are located on both sides of the intersection in the height direction of the soft soil foundation.

The beneficial effect of the vacuum preloading foundation structure of the embodiment of the utility model is: the vacuum preloading foundation structure can improve the bearing capacity of the foundation, so that the soil is not consolidated and the soft foundation is not easy to sink, especially the vacuum preloading The foundation structure can prevent the interior of the foundation from gradually loosening under long-term water erosion, that is, improve the firmness of the interior of the foundation, and can maintain a consolidated state for a long time.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 is a structural schematic diagram 1 of a vacuum preloaded foundation structure according to an embodiment of the present invention;

Fig. 2 is the structural schematic diagram II of the vacuum preloaded foundation structure of the utility model embodiment;

Fig. 3 is a schematic structural view of a cross drainage plate according to an embodiment of the present invention;

Fig. 4 is the structural representation of the triangular sandbag filling block of the utility model embodiment;

Fig. 5 is a structural schematic diagram III of a vacuum preloaded foundation structure according to an embodiment of the present invention.

Icons: 10-vacuum preloaded foundation structure; 100-cross drainage board; 200-filter pipe; 300-dragging sand layer; 400-soft soil foundation; 500-triangular sandbag filling block; 600-sealing membrane; Drainage board; 120-second drainage board; 130-intersection; 140-drainage hole; 150-third drainage board; 160-fourth drainage board; 700-rectangular sandbag filling block; 800-first geotextile; 510- 520-second side wall; 530-third side wall; 540-bottom wall; 550-top wall; 511-first frame; 512-second frame; 513-third frame; 514-first Four frames; 515-grid plate; 516-second geotextile.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the embodiments of the present utility model, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "vertical", "horizontal", "inner" and "outer" are based on the attached The orientation or positional relationship shown in the figure, or the conventional orientation or positional relationship of the product of the utility model in use, is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must be Having a particular orientation, being constructed and operating in a particular orientation, and therefore not to be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of the embodiments of the present utility model, it should also be noted that, unless otherwise specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Please refer to Fig. 1, the present embodiment provides a kind of vacuum preloading foundation structure 10, and it comprises cross drainage board 100, water filtering layer (not shown in figure), dredging sand layer 300, soft soil foundation 400, triangular sand bag filling block 500 and sealing film 600.

The above-mentioned dredged sand layer 300 covers the surface of the soft ground 400, and the water filter layer is arranged inside the dredged sand layer 300, and the water filter layer can be used to flow the water flowing into the vacuum preloaded foundation structure 10, etc. The liquid is sent into the soft soil foundation 400 below the dredger sand layer 300 .

The above-mentioned sealing film 600 is provided on the side of the dredged sand layer 300 away from the soft soil foundation 400 , and the end of the sealing film 600 is subjected to embedding treatment. It should be noted that when performing vacuum preloading to strengthen the soft soil foundation 400, a vertical drainage channel can be inserted into the soft soil foundation 400, and then after the sealing film 600 is covered, the vertical drainage channel inserted in advance can be used to use a vacuum pump. Or other vacuum means, vacuumize under the sealing film 600 to form a negative pressure (relative to atmospheric pressure), and the negative pressure transmits the unequal pressure state of the soil body and the vertical drainage channel downwards along the vertical drainage channel to make the negative pressure move toward the soil. Under the action of negative pressure, the pore water gradually seeps into the vertical drainage channel to achieve the effect of soil drainage consolidation and strength enhancement.

Preferably, the vacuum preloaded foundation structure 10 further includes a first geotextile 800, the first geotextile 800 is arranged on the side of the dredged sand layer 300 away from the soft soil foundation 400, and the first geotextile 800 is sandwiched between the blown Between the sand layer 300 and the sealing film 600 . On the one hand, the first geotextile 800 can be used for water permeability, and on the other hand, it can prevent the sealing film 600 from being worn away by the sand filling in the blown sand layer 300, avoiding the formation of cavities that may leak air, etc., thereby improving the efficiency of the vacuum, etc. .

Further, the cross drainage board 100 is arranged inside the soft soil foundation 400 , and the cross drainage board 100 protrudes from the soft soil foundation 400 along the height direction of the soft soil foundation 400 to connect with the water filter layer of the dredging sand layer 300 . The cross drainage plate 100 can drain the liquid in the filter layer away from the dredged sand layer 300, thereby maintaining a lower water level in the vacuum preloaded foundation structure 10 and maintaining a higher strength of the vacuum preloaded foundation structure 10 and the degree of consolidation, thereby avoiding subsidence of the foundation.

In detail, the above-mentioned cross drainage board 100 may include a first drainage board 110 and a second drainage board 120, the first drainage board 110 and the second drainage board 120 are intersected, and the intersection of the first drainage board 110 and the second drainage board 120 is the intersection 130. It should be noted that, referring to FIG. 2 and FIG. 3 , the vacuum preloaded foundation structure 10 may further include a third drainage board 150 and a fourth drainage board 160 , the third drainage board 150 may be connected to the first drainage board 110 , The fourth drainage board 160 can be connected to the second drainage board 120, the third drainage board 150 and the fourth drainage board 160 are also intersected, and the intersection of the third drainage board 150 and the fourth drainage board 160 can also be an intersection 130, The intersection 130 of the first drainage board 110 and the second drainage board 120 and the intersection 130 of the third drainage board 150 and the fourth drainage board 160 may be located on the same axis in the height direction of the soft ground 400 . It should be further explained that the cross drainage board 100 may also include the fifth drainage board, the sixth drainage board, the seventh drainage board and the eighth drainage board, etc., and the connection and arrangement of each of the above drainage boards can refer to the first drainage board 110 , the arrangement of the second drainage board 120 , the third drainage board 150 and the fourth drainage board 160 is repeated, and will not be repeated here.

It should be noted that, referring to FIG. 3 , the first drainage board 110 and other drainage boards in this embodiment can be various existing drainage boards with drainage holes 140 , and the drainage holes 140 run through the surface of the drainage board. .

Further, please refer to FIG. 1 and FIG. 2 , the above-mentioned water filter layer is provided with a water filter pipe 200, and the cross drainage plate 100 is connected to the water filter pipe 200, and the water filter pipe 200 can be along the length direction or width of the vacuum preloaded foundation structure 10 The direction is horizontally arranged in the water filter layer, and it can also be horizontally arranged in the water filter layer in any direction of the vacuum preloaded foundation structure 10, but the water filter pipe 200 should be connected to the cross drainage plate 100; the liquid flowing into the water filter layer can be into the water filter pipe 200, and then sent to the cross drain plate 100 from the water filter pipe 200. A water inlet is provided on the side wall of the water filter pipe 200 , and the water inlet can be arranged on the side of the water filter pipe 200 facing the sealing film 600 or at both ends of the water filter pipe 200 .

The aforementioned triangular sandbag filling block 500 is arranged inside the soft soil foundation 400, and the triangular sandbag filling block 500 is located at the intersection 130 of the cross drainage board 100 on both sides of the soft soil foundation 400 in the height direction, that is, on the first drainage board 110 The triangular sandbag filling block 500 is arranged in the gap between the second drainage board 120 . The above-mentioned triangular sandbag filling block 500 has a triangular cross-section, which has better anti-deformation ability, and can further improve the strength of the foundation.

Please refer to Fig. 4, this triangular sandbag stuffing block 500 can comprise first side wall 510, second side wall 520, third side wall 530, bottom wall 540 and top wall 550, first side wall 510, second side wall 520 It is connected with the third side wall 530 in turn, and is surrounded to form a sand-filled space that can be used to fill sand, soil and other fillers. The three sides of the bottom wall 540 are respectively connected to the first side wall 510 and the second side wall 520. It is connected to one end of the third side wall 530, and the three side walls of the top wall 550 are respectively connected to the ends of the first side wall 510, the second side wall 520 and the third side wall 530 away from the bottom wall 540, that is, the above-mentioned filling The sand-filled space of fillers such as sand, soil, etc. is located between the bottom wall 540 and the top wall 550 . It should be noted that the first side wall 510 , the second side wall 520 and the third side wall 530 are rectangular side walls, and the bottom wall 540 and the top wall 550 are triangular side walls.

Further, the first side wall 510 may include a first frame 511, a second frame 512, a third frame 513, a fourth frame 514 and a grid plate 515, the first frame 511, the second frame 512, the third frame 513 It is sequentially connected with the fourth frame 514 and forms a setting space for the grid plate 515 . The four sides of the grid plate 515 are respectively connected with the first frame 511 , the second frame 512 , the third frame 513 and the fourth frame 514 . It should be noted that the mesh size of the grid plate 515 can be selected according to the particle size of the filler in the sand-filled space, and preferably, the mesh diameter of the grid plate 515 can be smaller than the particle size of the filler in the sand-filled space size. It should be noted that the first frame 511, the second frame 512, the third frame 513, the fourth frame 514 and the grid plate 515 can be made of metal materials such as stainless steel and aluminum alloy, and the first frame 511, the second frame 512 , the third frame 513 , the fourth frame 514 and the grid plate 515 may be connected by welding or rivets.

Still further, the first side wall 510 may further include a second geotextile 516 , and the second geotextile 516 may cover the surface of the grid plate 515 . Covering the second geotextile 516 on the surface of the grid plate 515 can prevent the filler in the triangular sandbag filling block 500 from leaking out. The above-mentioned second geotextile 516 can be bonded to the surface of the grid cloth, or the second geotextile 516 can be tied to the grid plate 515 from the surroundings of the second geotextile 516 with ropes, wires, etc. respectively.

Preferably, the second geotextile 516 can cover the side of the grid plate 515 facing the sand-filled space, thereby preventing the second geotextile 516 from being damaged during construction and use, that is, the second geotextile 516 The function of preventing the leakage of the filler in the sand-filled space is fully exerted.

It should be noted that the specific structures of the second side wall 520 , the third side wall 530 , the bottom wall 540 and the top wall 550 are similar to the structure of the first side wall 510 , and will not be repeated here. It should be further explained that the connection of the above-mentioned side walls, the connection of the bottom wall 540 and the side walls, and the connection of the top wall 550 and the side walls may be welding or riveting of the interconnected frames, which are not specifically limited here. .

Further preferably, please refer to FIG. 1 and FIG. 2 , the two triangular sandbag filling blocks 500 above and below the intersection 130 of the cross drainage board 100 are mirror symmetrical; One triangular point is set toward the side away from the intersection 130 ; in other embodiments, one of the triangular points of the section of the triangular sandbag filling block 500 can also be set toward the direction of the intersection 130 .

The soft soil foundation 400 of the vacuum preloaded foundation structure 10 is also provided with rectangular sandbag filling blocks 700 , and the rectangular sandbag filling blocks 700 are located on both sides of the intersection 130 in the width direction of the soft soil foundation 400 . The above-mentioned rectangular sandbag filling block 700 is a sandbag filling block with a rectangular cross section. The rectangular sandbag filling block 700 includes 6 side walls, of which 4 side walls are connected in sequence and surround the side walls forming the sand filling cavity, and the other 2 side walls The walls are respectively connected to the two ends of the above-mentioned sequentially connected four side walls, and the sand-filled space is sandwiched therein. The 6 side walls of the rectangular sandbag filling block 700 are all rectangular, and the concrete structure of the 6 side walls of the rectangular sandbag filling block 700 is similar to the structure of the first side wall 510 of the above-mentioned triangular sandbag filling block 500, which can be directly Referring to the first side wall 510 , details will not be repeated here.

It should be noted that the cross drainage board 100, the triangular sandbag filling blocks 500 and the rectangular sandbag filling blocks 700 may be distributed along the width direction of the vacuum preloaded foundation structure 10, or may be distributed along the length direction of the vacuum preloaded foundation structure 10 .

It should be further explained that, please refer to FIG. 5 , in the width direction of the vacuum preloaded foundation structure 10, the above-mentioned triangular sandbag filling block 500 can also be interposed between two adjacent cross drainage boards 100; further, each A triangular sandbag filling block 500 is provided above and below each rectangular sandbag filling block 700 . Furthermore, in the width direction of the vacuum preloaded foundation structure 10, the triangular sandbag filling blocks 500 located on the same horizontal plane or the rectangular sandbag filling blocks 700 located on the same horizontal position can also be connected with steel wire mesh to further improve the stability of the structure . The height direction in the embodiment of the present utility model may be the vertical direction from the soft soil foundation 400 to the sealing film 600 in the vacuum preloaded foundation structure 10, the length direction and the width direction are perpendicular to each other, and the length direction and the width direction are both perpendicular to the height direction; the width direction in this embodiment is the d direction in FIG. 1 , FIG. 2 and FIG. 5 .

The construction method and beneficial effects of the vacuum preloaded foundation structure 10 are: when setting the vacuum preloaded foundation structure 10, the underlying foundations such as soft soil, non-consolidated or consolidated instability can be excavated first, and then the cross-drainage The slab 100 is vertically arranged in the excavated foundation cavity, and then the excavated soft soil is filled in the excavated cavity, and the soft soil foundation 400 is formed while filling the soft soil and other underlying foundations. Set up triangular sandbag filling blocks 500 and rectangular sandbag filling blocks 700 at the corresponding positions between the drainage boards and the adjacent cross drainage boards 100, and vertical drainage pipes should be set in the soft soil for later vacuuming treatment, and continue Fill soft soil etc. as the soft soil foundation 400, and then set the triangular sandbag filling block 500 and the rectangular sandbag filling block 700 at the corresponding positions again, and cycle like this until the stacking height of the soft soil foundation 400 reaches the cross drainage board 100 and the water filter pipe 200 Below the junction, the water filter pipe 200 is then buried with blown-fill sand to form a blown-fill sand layer 300, and the water filter pipe 200 is used to form a water filter layer (the horizontal plane where the water filter pipe 200 is located can be a water filter layer), followed by blowing A first geotextile 800 and a sealing film 600 are provided on the side of the sand filling layer 300 away from the soft soil foundation 400 , and finally a negative pressure is formed in the soft soil foundation 400 by using a vacuum pump through a drainage pipe arranged in the soft soil foundation 400 . The vacuum preloaded foundation structure 10 can utilize the cross drainage board 100 to send the liquid (for example: water) flowing into the dredged sand layer 300 to the lower layer of the soft soil foundation 400 so as to avoid the rise of the water level in the vacuum preloaded soft soil foundation 400, increase The strength of the soft soil foundation 400 can avoid the settlement of the soft soil foundation 400; the cross drainage board 100 can further improve the strength of the vacuum preloaded foundation structure 10.

To sum up, the beneficial effect of the vacuum preloaded foundation structure of the utility model is: the vacuum preloaded foundation structure can improve the bearing capacity of the foundation, so that the soil is not consolidated and the soft foundation is not easy to sink, especially the vacuum preloaded foundation structure The preloaded foundation structure can avoid the gradual loosening of the inside of the foundation under long-term water erosion, that is, improve the firmness of the inside of the foundation, and can maintain a consolidated state for a long time.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. a kind of Soft Ground Improved By Vacuum Preloading structure, which is characterized in that including intersecting drain bar, drainage layer, hydraulic reclamation layer of sand, soft soil foundation With triangle sand hill fill block；

The hydraulic reclamation layer of sand is covered in the surface of the soft soil foundation, and the drainage layer is set to the inside of the hydraulic reclamation layer of sand；

The inside for intersecting drain bar and being set to the soft soil foundation, the height for intersecting drain bar along the soft soil foundation Direction is stretched out the soft soil foundation and is connect with the drainage layer；

The intersection drain bar includes the first drain bar and the second drain bar, and first drain bar and second drain bar are handed over Fork setting, and the infall of first drain bar and second drain bar is cross part, the triangle sand hill fill block setting In the inside of the soft soil foundation, and the triangle sand hill fill block is located at the cross part in the soft soil foundation short transverse Both sides.

2. Soft Ground Improved By Vacuum Preloading structure according to claim 1, which is characterized in that the inside of the soft soil foundation is also set up There is rectangle sand hill fill block, and the rectangle sand hill fill block is located at the cross part in the both sides of the soft soil foundation width direction.

3. Soft Ground Improved By Vacuum Preloading structure according to claim 1, which is characterized in that above and below the cross part Two triangle sand hill fill blocks in minute surface it is symmetrical.

4. Soft Ground Improved By Vacuum Preloading structure according to claim 1, which is characterized in that the Soft Ground Improved By Vacuum Preloading structure is also wrapped The first geotextiles are included, first geotextiles are set to the side of the hydraulic reclamation layer of sand far from the soft soil foundation.

5. Soft Ground Improved By Vacuum Preloading structure according to claim 1, which is characterized in that the triangle sand hill fill block includes first Side wall, second sidewall, third side wall, bottom wall and roof, the first side wall, the second sidewall and the third side wall are successively Connection, and enclose and set to form sandy soil filling space, three sides of the bottom wall connect the first side wall, the second side respectively One end of wall and the third side wall, three sides of the roof are connected to the first side wall, the second sidewall With the described one end of third side wall far from the bottom wall.

6. Soft Ground Improved By Vacuum Preloading structure according to claim 5, which is characterized in that the first side wall includes the first side Frame, the second frame, third frame, the 4th frame and waffle slab, first frame, second frame, the third frame It is sequentially connected with the 4th frame, and forms waffle slab installation space, four sides of the waffle slab connect described first respectively Frame, second frame, the third frame and the 4th frame.

7. Soft Ground Improved By Vacuum Preloading structure according to claim 6, which is characterized in that the first side wall further includes the second soil Work cloth, second geotextiles are covered in the surface of the waffle slab.

8. Soft Ground Improved By Vacuum Preloading structure according to claim 7, which is characterized in that second geotextiles are covered in described Waffle slab fills the side in space towards the sandy soil.

9. Soft Ground Improved By Vacuum Preloading structure according to claim 1, which is characterized in that the drainage layer is provided with filter pipe, The intersection drain bar is connected to the filter pipe.

10. a kind of Soft Ground Improved By Vacuum Preloading structure, which is characterized in that including with intersecting drain bar, drainage layer, hydraulic reclamation layer of sand, weak soil Base, triangle sand hill fill block and diaphragm seal；

The hydraulic reclamation layer of sand is covered in the surface of the soft soil foundation, and the drainage layer is set to the inside of the hydraulic reclamation layer of sand, The diaphragm seal is set to the side of the hydraulic reclamation layer of sand far from the soft soil foundation；

The inside for intersecting drain bar and being set to the soft soil foundation, the height for intersecting drain bar along the soft soil foundation Direction is stretched out the soft soil foundation and is connect with the drainage layer；

The intersection drain bar includes the first drain bar and the second drain bar, and first drain bar and second drain bar are handed over Fork setting, and the infall of first drain bar and second drain bar is cross part, the triangle sand hill fill block setting In the inside of the soft soil foundation, and the triangle sand hill fill block is located at the cross part in the soft soil foundation short transverse Both sides.