Super-large deep soft soil foundation pit supporting structure

Abstract

The utility model discloses a super-large deep soft soil foundation pit supporting structure which comprises a plurality of supporting assemblies, the supporting assemblies are spliced and installed on a foundation pit slope in a surrounding mode, and each supporting assembly comprises a first supporting plate, a second supporting plate and an extension protection plate connected between the first supporting plate and the second supporting plate. Mounting parts are hinged to the upper end and the lower end of the first supporting plate and the upper end and the lower end of the second supporting plate correspondingly and used for being fixed to the foundation pit slope, supporting on the foundation pit slope is enhanced through the supporting assembly, and soft soil of the foundation pit slope is prevented from slipping and sliding.

Description

Technical Field

[0001] This utility model relates to a support structure for ultra-large deep soft soil foundation pits. Background Technology

[0002] Excavation pit support is a set of measures used to support, reinforce, and protect the sidewalls and surrounding environment of an excavation pit to ensure the safety of underground structure construction and the surrounding environment. It effectively prevents soil slippage and landslides, ensuring construction quality and the long-term stability and safety of the project. Because some construction sites are located in soft soil, the soil nails used to fix the retaining walls in the excavation pit support structure can easily tilt in the soil, causing the retaining walls to detach from the slope and lose their slope protection capacity, potentially leading to collapses or landslides. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to improve the support structure of ultra-large deep soft soil foundation pit. This foundation pit support structure strengthens the support of the foundation pit slope and avoids the soft soil of the foundation pit slope from slipping and landslide.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a support structure for an ultra-large deep soft soil foundation pit, comprising multiple support components, which are spliced ​​together and installed on the slope of the foundation pit. Each support component includes a first support plate, a second support plate, and an extension plate connecting the first and second support plates. The upper and lower ends of the first and second support plates are hinged with mounting parts, which are used to fix the foundation pit slope.

[0005] Furthermore, the extended guard plate includes a first hinge plate, a second hinge plate, and a connecting plate. The upper and lower inner end faces of the first and second hinge plates and the inner end face of the connecting plate are all provided with adjustable inserts. The inserts are all provided with wire mesh, and the wire mesh is fixed on the slope of the foundation pit by adjusting the inserts.

[0006] Furthermore, the inserts of the first hinge plate and the second hinge plate are staggered. Each insert includes a movable plate with a pointed cone connected to it. The edge of the wire mesh is positioned between the pointed cone and the movable plate. The movable plate has grooves on both sides, and the ends of the grooves are connected to the hinge plate via telescopic rods. The movable plate has a threaded rod in the middle, and the hinge plate has a rotating sleeve corresponding to the threaded rod. A synchronous pulley is installed on the rotating sleeve on the same vertical line, and a synchronous belt drive is provided between the synchronous pulleys. A rotating handle is installed on the rotating sleeve at the lower position.

[0007] Furthermore, both the first support plate and the second support plate have grooves on their inner end faces, and a grid plate is provided in the groove. The grid plate is fixedly connected to or elastically connected to the groove. The first support plate has a first connecting end on its side, and the second support plate has a second connecting end on its side that is connected to the first connecting end.

[0008] Furthermore, the mounting component includes an upper mounting part and a lower mounting part. The lower mounting part includes a lower mounting plate, and the lower mounting plate is provided with ground nail holes for driving ground nails into the foundation pit soil.

[0009] Furthermore, the upper surface of the lower mounting plate is provided with a placement cavity, and the bottom of the placement cavity is provided with equally spaced protrusions, and the protrusions are provided with abutment grooves.

[0010] Furthermore, the outer ends of the first and second support plates are provided with diagonal braces corresponding to the abutment grooves.

[0011] Furthermore, the upper mounting part includes an upper mounting plate, which has a rectangular through hole. The two side walls of the rectangular through hole are provided with slide rails. A positioning plate is provided in the slide rails. The positioning plate has holes for driving in ground nails. The positioning plate is provided with an adjusting rod. The support plate is made to fit tightly with the foundation pit by rotating and moving the adjusting rod laterally.

[0012] Beneficial effects:

[0013] 1. The first support plate, the second support plate, and the extended support plate are installed on the slope of the foundation pit through the installation parts. They can be adjusted and fixed according to different slopes of the foundation pit slope. The soil of the foundation pit slope is fixed by the joint action of the grid plate and the wire mesh, so as to avoid the danger of soil slippage or landslide.

[0014] 2. The extended protective plate can be folded for storage, allowing the wire mesh and inserts to be folded and stored. This protects the wire mesh during transportation, preventing damage and concealing the sharp points to avoid injuries to workers. Attached Figure Description

[0015] Figure 1 A schematic diagram of the support structure;

[0016] Figure 2 for Figure 1 A diagram showing the unfolded shape;

[0017] Figure 3 for Figure 1 A schematic diagram of the other end face;

[0018] Figure 4 for Figure 3 Enlarged schematic diagram of part A in the middle.

[0019] Reference numerals: 1. Support assembly; 2. First support plate; 3. Second support plate; 4. Extended support plate; 41. First hinge plate; 42. Second hinge plate; 43. Connecting plate; 44. Insert; 441. Moving plate; 442. Conical head; 443. Threaded rod; 45. Wire mesh; 5. Mounting component; 51. Upper mounting part; 511. Upper mounting plate; 512. Rectangular through hole; 513. Slide rail; 514. Positioning plate; 515. Adjusting rod; 52. Lower mounting part; 521. Lower mounting plate; 522. Placement cavity; 523. Protrusion; 524. Abutment groove; 6. Rotating sleeve; 7. Synchronous pulley; 8. Synchronous belt; 9. Rotating handle; 10. Groove; 11. Grating plate; 12. First connecting end; 13. Second connecting end; 14. Diagonal brace. Detailed Implementation

[0020] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0021] For reference Figures 1-4 As shown, this utility model provides a support structure for an ultra-large deep soft soil foundation pit, including multiple support components 1. The multiple support components 1 are spliced ​​together and installed on the slope of the foundation pit. The support component 1 includes a first support plate 2, a second support plate 3, and an extension support plate 4 connecting the first support plate 2 and the second support plate 3. The upper and lower ends of the first support plate 2 and the second support plate 3 are both hinged with mounting parts 5. The mounting parts 5 are used to fix the foundation pit slope, fix the soil on the foundation pit slope, and prevent the surrounding soil from sliding or landslide.

[0022] Specific examples Figure 1As shown, the extended guard plate 4 is rotatably connected to the first support plate 2 and the second support plate 3. The extended guard plate 4 can be stored between the first support plate 2 and the second support plate 3. When in use, the extended guard plate 4 unfolds, which can extend the support of the first support plate 2 and the second support plate 3 for the slope of the foundation pit. The extended guard plate 4 includes a first hinge plate 41, a second hinge plate 42 and a connecting plate 43. The end faces of the first hinge plate 41 and the second hinge plate 42 facing the slope of the foundation pit and the end face of the connecting plate 43 facing the slope of the foundation pit are all provided with adjustable inserts 44. The inserts 44 are all provided with wire mesh 45. To ensure the closure of the first hinge plate 41 and the second hinge plate 42, the pointed cones 442 of the first hinge plate 41 and the pointed cones 442 of the second hinge plate 42 are staggered. Each insert 44 includes a movable plate 441 and a pointed cone 442 disposed on the movable plate 441. The edge of the wire mesh 45 is fixed between the movable plate 441 and the pointed cone 442 to fix the edge of the wire mesh 45. The movable plate 441 has grooves 10 on both sides. The ends of the grooves 10 are connected to the hinge plate through telescopic rods. The movable plate 441 has a threaded rod 443 in the middle. The hinge plate has a rotating sleeve 6 corresponding to the threaded rod 443. The rotating sleeve 6, which is on the same vertical line, is equipped with a synchronous wheel 7 and a synchronous belt 8 is provided between the synchronous wheels 7 for transmission. The rotating sleeve 6, which is in a lower position, is equipped with a rotating handle 9. The rotating sleeve 6 is rotated by rotating the rotating handle 9, thereby realizing the rotation of the threaded rod 443 and extending the telescopic rod towards the slope of the foundation pit. The pointed cone is inserted into the soil, and then the wire mesh 45 is laid on the slope of the foundation pit, thereby fixing the soil of the foundation pit slope.

[0023] For reference Figure 3 As shown, both the first support plate 2 and the second support plate 3 have grooves 10 on their inner end faces. A grid plate 11 is installed within the groove 10, and the grid plate 11 is fixedly connected to the groove 10 by a fixing rod or elastically connected by a damping spring. The first support plate 2 has a first connecting end 12 on its side, and the second support plate 3 has a second connecting end 13 connected to the first connecting end 12 on its side. The first connecting end 12 and the second connecting end 13 are threaded holes, connected by bolts. Alternatively, the first connecting end 12 can be a socket with an insertion hole, and the second connecting end 13 can be a plug with an insertion hole, connected by inserting a pin into the socket. There are many ways to connect adjacent support plates, not limited to the two described above; any method that enables the connection between adjacent support plates is acceptable.

[0024] For reference Figure 2As shown, the mounting component 5 includes an upper mounting part 51 and a lower mounting part 52. Both the upper and lower mounting parts 52 are hinged to the upper and lower ends of the support plate, which enables the support plate to adjust its inclination according to the slope of the foundation pit, thus better conforming to the slope of the foundation pit. The lower mounting part 52 includes a lower mounting plate 521, which is provided with ground nail holes for ground nails to be driven into the foundation pit to fix the position of the lower mounting plate 521. The upper mounting part 51 includes an upper mounting plate 511. The upper mounting plate 511 has a rectangular through hole 512. Slide rails 513 are provided on both sides of the rectangular through hole 512. A positioning plate 514 is provided in the slide rails 513. The positioning plate 514 has holes for driving in ground nails. An adjusting rod 515 is provided on the positioning plate 514. The support plate is pressed against the foundation pit by rotating the adjusting rod 515 laterally. The positioning plate 514 is first fixed by ground nails. Then, the position of the upper mounting plate 511 is adjusted by rotating the adjusting rod 515, thereby adjusting the fit between the support plate and the foundation pit.

[0025] For reference Figure 2 As shown, in order to further enhance the support function of the support plate, telescopic diagonal braces 14 are provided on the outer end faces of the first support plate 2 and the second support plate 3. The telescopic diagonal braces 14 are adjustable. The upper end face of the lower mounting plate 521 is provided with a placement cavity 522. The bottom of the placement cavity 522 is provided with protrusions 523 at equal intervals. The protrusions 523 are provided with abutment grooves 524 for the diagonal braces 14 to support and generate a diagonal support force on the support plate.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A support structure for an ultra-large deep soft soil foundation pit, comprising multiple support components (1), wherein the multiple support components (1) are spliced ​​together and installed on the slope of the foundation pit, characterized in that: The support assembly (1) includes a first support plate (2), a second support plate (3), and an extension support plate (4) connecting the first support plate (2) and the second support plate (3). The upper and lower ends of the first support plate (2) and the second support plate (3) are both hinged with mounting parts (5), which are used to fix the foundation pit slope.

2. The support structure for ultra-large deep soft soil foundation pits according to claim 1, characterized in that: The extended guard plate (4) includes a first hinge plate (41), a second hinge plate (42) and a connecting plate (43). The upper and lower inner end faces of the first hinge plate (41) and the second hinge plate (42) and the inner end face of the connecting plate (43) are all provided with adjustable inserts (44). The inserts (44) are all provided with wire mesh (45). The wire mesh (45) is fixed on the slope of the foundation pit by adjusting the inserts (44).

3. The support structure for ultra-large deep soft soil foundation pits according to claim 2, characterized in that: The inserts (44) of the first hinge plate (41) and the inserts (44) of the second hinge plate (42) are staggered. Each insert (44) includes a movable plate (441). A pointed cone (442) is connected to the movable plate (441). The edge of the wire mesh (45) is located between the pointed cone (442) and the movable plate (441). The movable plate (441) has grooves (10) on both sides. The end of the groove (10) is connected to the hinge plate through a telescopic rod. The movable plate (441) has a threaded rod (443) in the middle. The hinge plate has a rotating sleeve (6) corresponding to the threaded rod (443). A synchronous wheel (7) is installed on the rotating sleeve (6) on the same vertical line, and a synchronous belt (8) is provided between the synchronous wheels (7). A rotating handle (9) is installed on the rotating sleeve (6) at the lower position.

4. The support structure for ultra-large deep soft soil foundation pits according to claim 3, characterized in that: The inner end faces of the first support plate (2) and the second support plate (3) are provided with grooves (10), and the grooves (10) are provided with grid plates (11), and the grid plates (11) are fixedly connected or elastically connected to the grooves (10). The first support plate (2) is provided with a first connecting end (12) on its side, and the second support plate (3) is provided with a second connecting end (13) connected to the first connecting end (12) on its side.

5. The support structure for ultra-large deep soft soil foundation pits according to claim 4, characterized in that: The mounting component (5) includes an upper mounting part (51) and a lower mounting part (52). The lower mounting part (52) includes a lower mounting plate (521). The lower mounting plate (521) is provided with ground nail holes for driving ground nails into the foundation pit soil.

6. The support structure for ultra-large deep soft soil foundation pits according to claim 5, characterized in that: The upper end face of the lower mounting plate (521) is provided with a placement cavity (522), and the bottom of the placement cavity (522) is provided with protrusions (523) at equal intervals, and the protrusions (523) are provided with abutment grooves (524).

7. The support structure for ultra-large deep soft soil foundation pits according to claim 6, characterized in that: The outer ends of the first support plate (2) and the second support plate (3) are provided with diagonal braces (14) corresponding to the abutment grooves (524).

8. The support structure for ultra-large deep soft soil foundation pits according to claim 5 or 7, characterized in that: The upper mounting part (51) includes an upper mounting plate (511), the upper mounting plate (511) is provided with a rectangular through hole (512), the two side walls of the rectangular through hole (512) are provided with slide rails (513), the slide rails (513) are provided with a positioning plate (514), the positioning plate (514) is provided with a ground nail hole for driving ground nails, and the positioning plate (514) is provided with an adjusting rod (515). The support plate is pressed tightly against the foundation pit by rotating and moving the adjusting rod (515) laterally.

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