CN212200443U

CN212200443U - Deep foundation pit supporting structure for soft soil foundation

Info

Publication number: CN212200443U
Application number: CN202020713514.2U
Authority: CN
Inventors: 白鹏; 郭建功; 黄纳恩
Original assignee: Guangdong No 3 Water Conservancy and Hydro Electric Engineering Board Co Ltd
Current assignee: Guangdong No 3 Water Conservancy and Hydro Electric Engineering Board Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-12-22
Anticipated expiration: 2030-04-30

Abstract

The utility model relates to a excavation supporting technology field just discloses a deep basal pit supporting construction for weak soil foundation, including erecting the hole, erect the hole setting at the foundation ditch skew wall edge, the quantity that erects the hole sets up to a plurality of, and is a plurality of it is linear array distribution, and is a plurality of erect downthehole portion and all pour the base, a plurality of through the concrete to erect downthehole portion the base top all is equipped with bearing structure, and is adjacent be provided with the connecting pipe between the bearing structure. This a deep basal pit supporting structure for soft soil foundation, through the bearing structure who is provided with a plurality of evenly distributed at the foundation ditch lateral wall, and by inserting nail and the fixed ejector pin of stay cord, and support the sill bar through concreting and bracing piece, it is better to compare common mode protecting effect who spouts anchor support, be provided with the connecting pipe between the adjacent bearing structure, the wholeness and the fastness of whole device have been improved, can have more pertinence simultaneously and add to the foundation ditch lateral wall that slides easily and establish more connecting pipes, with this protecting effect that improves this department.

Description

Deep foundation pit supporting structure for soft soil foundation

Technical Field

The utility model relates to a excavation supporting technology field specifically is a deep basal pit supporting construction for weak soil foundation.

Background

The foundation pit support is a retaining, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit; when the foundation pit is excavated under the conditions of soft soil, high underground water level and other complex fields, the dangerous factors of soil body slippage, foundation pit instability, pile body deflection, pit bottom bulge, serious water leakage of a supporting and retaining structure, damage caused by soil flowing and the like are easily generated, and the safety of surrounding buildings, underground structures and pipelines is greatly influenced.

The most common mode to the excavation supporting among the prior art is for carrying out the shotcrete at the excavation lateral wall and strut, but common shotcrete is strutted the effect and is limited, has the difference to each position soil property state of excavation skew wall simultaneously, and the risk of sliding is different, and current supporting construction can't the pertinence arrange.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model provides a deep basal pit supporting construction for weak soil foundation possesses the construction of being convenient for, and advantage such as with strong points has solved among the prior art that the shotcrete is strutted the effect limited, has the difference to each position soil property state of foundation ditch skew wall simultaneously, and the risk of sliding is different, the problem that current supporting construction can't the pertinence arrange.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a deep basal pit supporting construction for soft soil foundation, is including erecting the hole, erect the hole setting at foundation ditch skew wall edge, the quantity that erects the hole sets up to a plurality of, and is a plurality of it is linear array distribution to erect the hole, and is a plurality of erect downthehole portion and all pour the base, a plurality of through the concrete base top all is equipped with supporting mechanism, and is adjacent be provided with the connecting pipe between the bearing structure.

The utility model discloses a foundation ditch, including bed-bar, bracing structure, bed-bar bottom, base, connecting rod, bottom bar top, ejector pin one end fixedly connected with of ejector pin, ejector pin and bed-bar, the bearing structure includes the bed-bar, the bed-bar bottom is articulated with the base, bed-bar one side articulates there is the connecting rod, the connecting rod is kept away from that bed-bar one end articulates there is the bracing piece, foundation ditch bottom soil layer is inserted to the bracing piece bottom, fixedly connected with plectane on the bracing piece, the plectane is located foundation ditch bottom surface, the bed-bar top is equipped with the ejector pin, the ejector pin is located foundation ditch skew wall top edge, through a plurality of branch connection between ejector pin and.

Preferably, the strip hole of two symmetric distributions is seted up on connecting pipe one end surface, the inside fixedly connected with baffle of connecting pipe, baffle one side fixedly connected with spring, baffle one end fixedly connected with movable plug is kept away from to the spring, movable plug fixed surface is connected with the quarter butt of two symmetric distributions, the quarter butt runs through the strip hole and extends to the connecting pipe outside.

Preferably, one end of the connecting pipe, which is far away from the movable plug, is fixedly connected with a fixed plug, and the fixed plug is movably inserted inside the installation short pipe.

Preferably, the bottom end of the branch pipe is fixedly connected with a stud, the surface of the stud is provided with first threads, the inner wall of the top end of the branch pipe is provided with second threads, and the first threads are matched with the second threads.

Preferably, a protective net is arranged between the supporting structure and the side wall of the foundation pit, and the protective net is tightly attached to the surface of the side wall of the foundation pit.

Preferably, the diameter of the circular plate is at least thirty centimeters, the pull rope is made of metal materials, and the length of the pull rope is at least five meters.

Compared with the prior art, the utility model provides a deep basal pit supporting construction for soft soil foundation possesses following beneficial effect:

1. this a deep basal pit supporting structure for soft soil foundation, through the supporting mechanism who is provided with a plurality of evenly distributed at the foundation ditch lateral wall, and by inserting nail and the fixed ejector pin of stay cord, and support the sill bar through concreting and bracing piece, it is better to compare the mode protecting effect of reinforcing bar net protection, through being provided with the connecting pipe between the adjacent supporting mechanism, the wholeness of whole device has been improved, can have more pertinence simultaneously and add to the foundation ditch lateral wall that slides easily and establish more connecting pipes, with this protecting effect that improves this department.

2. This a deep basal pit supporting construction for soft soil foundation through set up movable plug, fixed plug and quarter butt etc. on the connecting pipe, is favorable to being connected the connecting pipe both ends fast with the installation nozzle stub on the branch pipe, and installation easy operation is favorable to saving engineering time.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the supporting mechanism of the present invention;

FIG. 3 is a schematic structural view of the connecting tube of the present invention;

fig. 4 is a schematic structural diagram of the stud of the present invention.

Wherein: 1. vertical holes; 2. a base; 3. a connecting pipe; 4. a bottom bar; 5. a connecting rod; 6. a support bar; 7. A circular plate; 8. a top rod; 9. a branch pipe; 10. installing short pipes; 11. pulling a rope; 12. inserting a nail; 13. a strip-shaped hole; 14. a baffle plate; 15. a spring; 16. a movable plug; 17. a short bar; 18. a stud; 19. a protective net; 20. and fixing the plug.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a deep foundation pit supporting structure for soft soil foundation includes vertical holes 1, the vertical holes 1 are disposed at the edge of the inclined wall of the foundation pit, the inner diameter of the vertical holes 1 is at least twenty centimeters, the depth of the vertical holes 1 is at least ninety centimeters, the number of the vertical holes 1 is multiple, the vertical holes 1 are distributed in a linear array, a base 2 is poured in the vertical holes 1 through concrete, the base 2 is made of steel, the top end of the base 2 extends to the top of the vertical holes 1, a supporting mechanism is disposed at the top of the base 2, a protective net 19 is disposed between the supporting structure and the side wall of the foundation pit, the protective net 19 is a steel bar net, the installation method of the protective net 19 is the same as the prior art, and is not described herein, the protective net 19 is tightly attached to the surface of the side wall of the foundation pit, a connecting pipe 3 is disposed between adjacent supporting structures, the integrity of the supporting, the supporting effect is improved, meanwhile, the number of the connecting pipes 3 can be set according to different pertinences of soil quality, two strip-shaped holes 13 which are symmetrically distributed are formed in the surface of one end of each connecting pipe 3, a baffle 14 is fixedly connected inside each connecting pipe 3, a spring 15 is fixedly connected to one side of each baffle 14, a movable plug 16 is fixedly connected to one end, far away from the baffle 14, of each spring 15, two short rods 17 which are symmetrically distributed are fixedly connected to the surface of each movable plug 16, each short rod 17 penetrates through each strip-shaped hole 13 and extends to the outer side of each connecting pipe 3, in the actual installation process, the short rods 17 are pulled to enable the springs 15 to compress and drive the movable plugs 16 to move into the connecting pipes 3, then the movable plugs 16 are aligned to the short installation pipes 10 and then loosened, the installation of the connecting pipes 3 can be realized under the action of the, the fixed plug 20 is movably inserted inside the installation stub 10.

The supporting structure comprises a bottom rod 4, the bottom end of the bottom rod 4 is hinged with a base 2, one side of the bottom rod 4 is hinged with a connecting rod 5, one end of the connecting rod 5, which is far away from the bottom rod 4, is hinged with a supporting rod 6, the bottom end of the supporting rod 6 is inserted into a soil layer at the bottom of a foundation pit, the supporting rod 6 is fixedly connected with a circular plate 7, the circular plate 7 is positioned on the surface of the bottom of the foundation pit, the diameter of the circular plate 7 is at least thirty centimeters, the supporting rod 6 is not easy to sink by arranging the circular plate 7, the supporting effect is improved, the bottom rod 4 is prevented from rotating, the top of the bottom rod 4 is provided with an ejector rod 8, the ejector rod 8 is positioned at the edge of the top of the inclined wall of the foundation pit, the ejector rod 8 is connected with the bottom rod 4 through a plurality of branch pipes 9, during practical application branch pipe 9 is the same with

sill bar

4 or 8 connected modes of ejector pin, branch pipe 9, the equal fixedly connected with installation nozzle stub 10 in both sides of sill bar 4 and ejector pin 8, the quantity of installation nozzle stub 10 sets up to a plurality ofly, a plurality of installation nozzle stub 10 evenly distributed are in branch pipe 9 both sides, 8 top fixedly connected with stay cords 11 of ejector pin, stay cord 11 has the metal material to make, the length of stay cord 11 sets up to five meters at least, 8 one end fixedly connected with inserted nails 12 of ejector pin are kept away from to stay cord 11, inserted nails 12 inserts foundation ditch top soil layer, inserted nails's 12 depth sets up to sixty centimetres at least.

When the device is used, the protective net 19 is fixed on the inclined wall of the foundation pit, then a plurality of uniformly distributed drill holes are arranged at the edge of the bottom of the inclined wall of the foundation pit, concrete is poured in the drill holes and the base 2 is fixed, meanwhile, the position of the support rod 6 is adjusted, the support rod 6 is inserted into the soil layer, then the branch pipe 9 and the ejector rod 8 are sequentially installed in a rotating mode, the inserting nails 12 connected with the ejector rod 8 are inserted into the soil layer, the installation of a plurality of supporting mechanisms is realized in sequence, then the fixed plug 20 on the connecting pipe 3 is inserted into the installation short pipe 10 on the side surface of the branch pipe 9, the short rod 17 on the connecting pipe 3 is pulled to move the movable plug 16 into the branch pipe 9, then the connecting pipe 3 is aligned with the installation short pipe 10 on the side surface of the branch pipe 9 on the other side, the short rod 17 is loosened, the movable, in practical application, the number of the connecting pipes 3 can be increased or decreased according to the specific difference of the side wall of the foundation pit.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a deep basal pit supporting construction for soft soil foundation, includes vertical hole (1), its characterized in that: the vertical holes (1) are formed in the edge of the inclined wall of the foundation pit, a plurality of vertical holes (1) are formed, the vertical holes (1) are distributed in a linear array mode, bases (2) are poured inside the vertical holes (1) through concrete, supporting structures are arranged at the tops of the bases (2), and connecting pipes (3) are arranged between the adjacent supporting structures;

the supporting structure comprises a bottom rod (4), the bottom end of the bottom rod (4) is hinged to a base (2), a connecting rod (5) is hinged to one side of the bottom rod (4), one end, far away from the bottom rod (4), of the connecting rod (5) is hinged to a supporting rod (6), the bottom end of the supporting rod (6) is inserted into a soil layer at the bottom of a foundation pit, a circular plate (7) is fixedly connected to the supporting rod (6), the circular plate (7) is located on the surface of the bottom of the foundation pit, an ejector rod (8) is arranged at the top of the bottom rod (4), the ejector rod (8) is located at the edge of the top of an inclined wall of the foundation pit, the ejector rod (8) is connected with the bottom rod (4) through a plurality of branch pipes (9), installation short pipes (10) are fixedly connected to the two sides of the branch pipes (9), the bottom rod (4) and the ejector rod (8), a pull rope (11, the inserting nails (12) are inserted into the soil layer above the foundation pit.

2. A deep foundation pit supporting construction for soft soil foundations as claimed in claim 1, wherein: connecting pipe (3) one end surface sets up bar hole (13) of two symmetric distributions, inside fixedly connected with baffle (14) of connecting pipe (3), baffle (14) one side fixedly connected with spring (15), baffle (14) one end fixedly connected with movable plug (16) are kept away from in spring (15), movable plug (16) fixed surface is connected with quarter butt (17) of two symmetric distributions, quarter butt (17) run through bar hole (13) and extend to the connecting pipe (3) outside.

3. A deep foundation pit supporting construction for soft soil foundations as claimed in claim 2, wherein: one end of the connecting pipe (3) far away from the movable plug (16) is fixedly connected with a fixed plug (20), and the fixed plug (20) is movably inserted in the installation short pipe (10).

4. A deep foundation pit supporting construction for soft soil foundations as claimed in claim 1, wherein: the bottom end of the branch pipe (9) is fixedly connected with a stud (18), the surface of the stud (18) is provided with first threads, the inner wall of the top end of the branch pipe (9) is provided with second threads, and the first threads are matched with the second threads.

5. A deep foundation pit supporting construction for soft soil foundations as claimed in claim 1, wherein: a protective net (19) is arranged between the supporting structure and the side wall of the foundation pit, and the protective net (19) is tightly attached to the surface of the side wall of the foundation pit.

6. A deep foundation pit supporting construction for soft soil foundations as claimed in claim 1, wherein: the diameter of the circular plate (7) is at least thirty centimeters, the pull rope (11) is made of metal materials, and the length of the pull rope (11) is at least five meters.