Enclosure structure of foundation pit secant pile foundation

Abstract

The utility model relates to the technical field of enclosure structures, and provides an enclosure structure of a foundation pit occlusive pile foundation, which adopts an annular support mode to realize the support effect of the occlusive pile foundation, further enhances the overall structural strength, adopts a split structure, is convenient to hoist and install and has better practicability, and comprises a foundation pit body, the secant piles are arranged on the inner circumferential wall of the foundation pit body, the inner supporting structure comprises four inclined supporting columns, bases are installed at the bottom ends of the four inclined supporting columns, adjusting cylinders are slidably connected to the four inclined supporting columns, adjusting blocks are slidably connected to the interiors of the four adjusting cylinders, adjusting threaded rods are installed between the four adjusting blocks and the four adjusting cylinders, and the adjusting threaded rods are connected with the bases through bolts. The four adjusting blocks are connected with fine adjustment springs, the four fine adjustment springs are connected with the four inclined supporting columns correspondingly, arc-shaped connecting pieces are hinged to the four adjusting cylinders correspondingly, a transverse supporting plate is detachably connected between every two adjacent arc-shaped connecting pieces in the four arc-shaped connecting pieces, and reinforcing pieces are connected to the four transverse supporting plates correspondingly.

Description

Technical Field

[0001] The utility model relates to the technical field of enclosure structures, in particular to an enclosure structure of a foundation pit interlocking pile foundation. Background Art

[0002] As we all know, interlocking piles are partially embedded in the circumference of adjacent concrete piles, and steel cages are placed in the piles that are constructed alternately in a later sequence to form an overall continuous waterproof and retaining structure with good anti-seepage effect. The pit interlocking pile foundation is a structure used in the pit construction process to achieve auxiliary support inside the pit. In order to realize the protection of the interlocking piles during the pit construction process, we propose a retaining structure for the pit interlocking pile foundation.

[0003] After searching, the Chinese patent with publication number CN217782081U published on November 11, 2022 discloses a retaining structure of a foundation pit interlocking pile foundation, which is roughly described as including a foundation pit body, a pressure-resistant mechanism is arranged inside the foundation pit body, and the pressure-resistant mechanism includes an interlocking pile fixedly installed on the inner peripheral wall of the foundation pit body, a pressure-bearing beam is fixedly connected to the inner peripheral wall of the interlocking pile, a fastening plate is fixedly connected to the inner peripheral wall of the pressure-bearing beam, a pressure-resistant column is movably installed inside the foundation pit body, a pressure-resistant telescopic rod is fixedly installed on the outer peripheral wall of the pressure-resistant column, a connecting head is fixedly connected to the end of the pressure-resistant telescopic rod away from the pressure-resistant column, and a protective plate is threadedly connected to the connecting head, and a fastening groove is opened on the outer wall of the protective plate. A slot is provided at each end, and a block is clamped in the slot. The end of the block away from the retaining plate is fixedly connected to a connecting plate. When in use, the four compression columns are respectively fixed at the four corners of the bite pile. At this time, multiple retaining plates are threadedly connected to the connecting head. After the retaining plates are fixed, the compression-resistant telescopic rod is started. At this time, the compression-resistant telescopic rod drives the retaining plates to move toward the pressure-bearing beam. When the retaining plates are in contact with the pressure-bearing beam, the retaining plates have a compression-resistant effect. At this time, the bite pile increases its compression resistance through the action of the retaining plates. At this time, the connecting plate is clamped in the slot of the retaining plate. At this time, the force-bearing areas of the four faces of the bite pile are the same, which further enhances the compression resistance of the bite pile, thereby improving the stability of the soil around the foundation pit body.

[0004] Although the above-mentioned existing technical scheme can achieve auxiliary support for the interlocking pile foundation to a certain extent, the four compression columns forming the internal support structure are independent of each other. Therefore, the supporting effect of the four compression columns for foundation pits with smaller lengths can still be guaranteed to a certain extent. The support requirements for foundation pits with larger sizes will increase exponentially, and the overall structural strength needs to be further strengthened. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a retaining structure for a foundation pit interlocking pile foundation, which adopts a ring-shaped support method to achieve the supporting effect of the interlocking pile foundation, while the overall structural strength is further enhanced, and the split structure is easy to lift and install, and has good practicality.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a retaining structure for a foundation pit interlocking pile foundation, comprising a foundation pit body, interlocking piles on the inner peripheral wall of the foundation pit body, and an internal support structure, wherein the internal support structure comprises four oblique pillars, and bases are installed at the bottom ends of the four oblique pillars, and adjustment cylinders are slidably connected to the four oblique pillars, and adjustment blocks are slidably connected to the four adjustment cylinders, and adjustment threaded rods are installed between the four adjustment blocks and the four adjustment cylinders respectively, and the four adjustment blocks are connected with fine-tuning springs, and the four fine-tuning springs are respectively connected to the four oblique pillars, and arc-shaped connecting pieces are hinged on the four adjustment cylinders, and transverse support plates are detachably connected between each two adjacent arc-shaped connecting pieces of the four arc-shaped connecting pieces, and the four transverse support plates are used for auxiliary support of the interlocking piles, and reinforcement pieces are connected to the four transverse support plates.

[0009] Preferably, the four bases each include an articulated seat, the four articulated seats are respectively hinged to four inclined pillars, the bottom ends of the four articulated seats are fixedly connected to a support plate, and the bottom ends of the four support plates are fixedly connected to a plurality of anchor nails.

[0010] Furthermore, the four reinforcement members each include an arched plate, both ends of the four arched plates are fixedly connected with a first socket and a second socket, insertion pins are provided in the four first sockets and the four second sockets, and a plurality of vertical through holes for inserting the pins are provided on the four cross support plates.

[0011] Preferably, a limited position lifting cap is provided at the top end of the insertion pin.

[0012] Furthermore, a plurality of threaded holes are provided in each of the four arched plates, and adjustment pillars matching the transverse support plates are threadedly connected in each of the plurality of threaded holes.

[0013] Preferably, the side walls of the four adjustment cylinders are fixedly connected with double-plate seats, the four double-plate seats are hinged with orifice plates, and the four orifice plates are fixedly connected to the four arc-shaped connecting members respectively.

[0014] Furthermore, the four orifice plates are all fixedly connected with first lateral reinforcing ribs and second lateral reinforcing ribs, the four first lateral reinforcing ribs are respectively fixedly connected to four arc-shaped connecting pieces, and the four second lateral reinforcing ribs are respectively fixedly connected to four arc-shaped connecting pieces.

[0015] Furthermore, each of the four arc-shaped connecting members is provided with a snap-in groove matching the transverse support plate.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a retaining structure for a foundation pit interlocking pile foundation, which has the following beneficial effects:

[0018] 1. In the present invention, four arc-shaped connectors and four transverse support plates cooperate to form an annular internal support structure relative to the bite pile, and an annular support method is adopted to achieve the support effect of the bite pile.

[0019] 2. In the utility model, a supporting structure is formed relative to the arc-shaped connecting member through the cooperation of the inclined support column, the base, the adjustment cylinder, the adjustment block, the adjustment threaded rod and the fine-tuning spring. The structural strength of the transverse support plate can be further strengthened by matching the reinforcement members, and the overall structural strength is further strengthened.

[0020] 3. In the utility model, the detachable connection between the arc-shaped connector and the transverse support plate facilitates the overall formation of the retaining structure of the foundation pit interlocking pile foundation, and the split structure is easy to lift and install, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0022] Figure 2 For this utility model Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0023] Figure 3 For this utility model Figure 1 A schematic diagram of the local enlarged structure at B in the middle;

[0024] Figure 4 It is a schematic diagram of a three-dimensional structure with a cross-section view of the inclined support, the adjustment cylinder and the adjustment block of the utility model;

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the transverse support plate of the utility model;

[0026] Figure 6 It is a schematic diagram of the overall three-dimensional structure of the utility model when viewed from above;

[0027] Figure 7 For this utility model Figure 6 Schematic diagram of the local enlarged structure at point C in the middle.

[0028] In the figure: 1. foundation pit body; 2. interlocking pile; 3. oblique support; 4. adjustment cylinder; 5. adjustment block; 6. adjustment threaded rod; 7. fine-tuning spring; 8. arc-shaped connector; 9. transverse support plate; 10. hinge seat; 11. support plate; 12. anchor nail; 13. bow plate; 14. first plug-in seat; 15. second plug-in seat; 16. insertion pin rod; 17. vertical through hole; 18. limit lifting cap; 19. adjustment support; 20. double plate connecting seat; 21. orifice plate; 22. first transverse side reinforcement rib; 23. second transverse side reinforcement rib; 24. snap-in groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example

[0031] Please see attached Figure 1 -Attached Figure 7 A retaining structure for a foundation pit interlocking pile foundation, comprising a foundation pit body 1, interlocking piles 2 on the inner circumferential wall of the foundation pit body 1, and an internal support structure, wherein the internal support structure comprises four oblique pillars 3, and bases are installed at the bottom ends of the four oblique pillars 3, and the four bases comprise hinged seats 10, and the four hinged seats 10 are respectively hinged to the four oblique pillars 3, and the bottom ends of the four hinged seats 10 are fixedly connected to support plates 11, and the bottom ends of the four support plates 11 are fixedly connected to a plurality of anchor nails 12, and the four oblique pillars 3 are slidably connected to adjustment cylinders 4, and the four adjustment cylinders 4 are slidably connected to adjustment blocks 5, and the four adjustment blocks 5 are respectively installed with adjustment threaded rods 6 between the four adjustment cylinders 4, and the four adjustment blocks 5 are connected to fine-tuning springs 7, and the four fine-tuning springs 7 are respectively connected to the four oblique pillars 3 connection, the four adjustment cylinders 4 are all hinged with arc-shaped connecting pieces 8, and through the cooperation of the inclined pillar 3, the base, the adjustment cylinder 4, the adjustment block 5, the adjusting threaded rod 6 and the fine-tuning spring 7, a supporting structure is formed relative to the arc-shaped connecting piece 8, and a transverse support plate 9 is detachably connected between each two adjacent arc-shaped connecting pieces 8 in the four arc-shaped connecting pieces 8. The detachable connection between the arc-shaped connecting piece 8 and the transverse support plate 9 facilitates the formation of the overall retaining structure of the foundation pit occlusal pile foundation, and the split structure is convenient for lifting and installation, and has good practicality. The four arc-shaped connecting pieces 8 are all provided with a snap-in groove 24 matching the transverse support plate 9. Through the cooperation of the four arc-shaped connecting pieces 8 and the four transverse support plates 9, an annular internal supporting structure is formed relative to the occlusal pile 2, and the supporting effect of the occlusal pile 2 is achieved by adopting an annular support method.

[0032] It should be further explained that the four transverse support plates 9 are used for auxiliary support of the bite pile 2, and the four transverse support plates 9 are connected with reinforcement members, and the four reinforcement members include an arched plate 13, and the two ends of the four arched plates 13 are fixedly connected with a first socket 14 and a second socket 15, and insertion pins 16 are provided in the four first sockets 14 and the four second sockets 15. The four transverse support plates 9 are provided with a plurality of vertical through holes 17 for inserting the pins 16. The structural strength of the transverse support plates 9 can be further strengthened by matching the reinforcement members, and the overall structural strength is further strengthened. A limited lifting cap 18 is provided on the top of the insertion pin 16 to facilitate the gripping of the insertion pin 16 during limiting and lifting. A plurality of threaded holes are provided in the plate 13, and an adjustment pillar 19 matching the transverse support plate 9 is threadedly connected in the plurality of threaded holes, so as to improve the relative structural strength between the arch plate 13 and the transverse support plate 9, and a double-plate connecting seat 20 is fixedly connected to the side walls of the four adjustment cylinders 4, and a hole plate 21 is hinged in the four double-plate connecting seats 20, and the four hole plates 21 are fixedly connected to the four arc-shaped connecting members 8, respectively, and the four hole plates 21 are fixedly connected to the first transverse side reinforcement ribs 22 and the second transverse side reinforcement ribs 23, respectively, and the four first transverse side reinforcement ribs 22 are fixedly connected to the four arc-shaped connecting members 8, respectively, and the four second transverse side reinforcement ribs 23 are fixedly connected to the four arc-shaped connecting members 8, respectively, so as to improve the connection structural strength between the arc-shaped connecting member 8 and the corresponding hole plate 21.

[0033] In summary, the assembly process of the retaining structure of the foundation pit interlocking pile foundation is as follows: when in use, firstly, four transverse support plates 9 and four transverse support plates 9 are formed as shown in the attached Figure 1 The annular structure bracket shown is in the interlocking pile 2, and then the relative positions of the four adjustment cylinders 4 and the four inclined pillars 3 are adjusted relative to the four arc-shaped connecting parts 8, so as to adjust the overall length between the adjusting cylinders 4 and the inclined pillars 3 that cooperate with each other. At the same time, by adjusting the angle between the double-plate connecting seat 20 and the orifice plate 21, as well as the angle between the hinge seat 10 and the inclined pillar 3, the support angle relative to the bottom surface of the foundation pit is adjusted to achieve a good bracket effect, and the reinforcement is selectively installed according to actual conditions. When installing the reinforcement, first, the first socket 14 and the second socket 15 are both placed on the same horizontal support plate 9, and the insertion pin 16 is successively inserted into the vertical through hole 17 corresponding to the first socket 14, and the insertion pin 16 is successively inserted into the vertical through hole 17 corresponding to the second socket 14, and then the adjustment pillar 19 is adjusted by rotation to achieve the adjustment pillar 19 relative to the horizontal support plate 9. Tightening, thereby strengthening the structural strength of the horizontal support plate 9.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A retaining structure of a foundation pit interlocking pile foundation, comprising a foundation pit body (1), interlocking piles (2) on the inner peripheral wall of the foundation pit body (1), characterized in that: The invention also comprises an inner support structure, wherein the inner support structure comprises four inclined pillars (3), the bottom ends of the four inclined pillars (3) are all provided with bases, the four inclined pillars (3) are all slidably connected with adjustment cylinders (4), the four adjustment cylinders (4) are all slidably connected with adjustment blocks (5), the four adjustment blocks (5) are respectively provided with adjustment threaded rods (6) between the four adjustment cylinders (4), the four adjustment blocks (5) are respectively connected with fine-tuning springs (7), the four fine-tuning springs (7) are respectively connected with the four inclined pillars (3), the four adjustment cylinders (4) are all hinged with arc-shaped connecting pieces (8), and each two adjacent arc-shaped connecting pieces (8) in the four arc-shaped connecting pieces (8) are detachably connected with a transverse support plate (9), the four transverse support plates (9) are all used for auxiliary support of the bite pile (2), and the four transverse support plates (9) are all connected with reinforcement pieces.

2. The retaining structure of the foundation pit interlocking pile foundation according to claim 1, characterized in that: The four bases each comprise an articulated seat (10), the four articulated seats (10) being articulated to four inclined pillars (3) respectively, the bottom ends of the four articulated seats (10) being fixedly connected to a support plate (11), and the bottom ends of the four support plates (11) being fixedly connected to a plurality of anchor nails (12).

3. The retaining structure of the foundation pit interlocking pile foundation according to claim 2, characterized in that: The four reinforcement members each comprise an arched plate (13), both ends of the four arched plates (13) are fixedly connected with a first plug socket (14) and a second plug socket (15), insertion pins (16) are each arranged in the four first plug sockets (14) and the four second plug sockets (15), and a plurality of vertical through holes (17) for inserting the insertion pins (16) are each provided on the four transverse support plates (9).

4. The retaining structure of the foundation pit interlocking pile foundation according to claim 3 is characterized in that: A limited position lifting cap (18) is arranged at the top end of the insertion pin rod (16).

5. The retaining structure of the foundation pit interlocking pile foundation according to claim 4, characterized in that: A plurality of threaded holes are provided in each of the four arched plates (13), and an adjustment support (19) matching the transverse support plate (9) is threadedly connected in each of the plurality of threaded holes.

6. The retaining structure of the foundation pit interlocking pile foundation according to claim 5, characterized in that: The side walls of the four adjustment cylinders (4) are all fixedly connected with double-plate connecting seats (20), the four double-plate connecting seats (20) are all hinged with orifice plates (21), and the four orifice plates (21) are respectively fixedly connected to the four arc-shaped connecting members (8).

7. The retaining structure of the foundation pit interlocking pile foundation according to claim 6, characterized in that: The four orifice plates (21) are all fixedly connected with a first transverse reinforcing rib (22) and a second transverse reinforcing rib (23); the four first transverse reinforcing ribs (22) are respectively fixedly connected to four arc-shaped connecting members (8); and the four second transverse reinforcing ribs (23) are respectively fixedly connected to four arc-shaped connecting members (8).

8. The retaining structure of the foundation pit interlocking pile foundation according to claim 7, characterized in that: Each of the four arc-shaped connecting members (8) is provided with a snap-in groove (24) matching the transverse support plate (9).

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