A PC steel pipe pile for foundation pit support

Abstract

The utility model discloses a PC steel pipe pile for foundation pit support, including a steel pipe pile and a mounting sleeve 1 and a mounting sleeve 2 symmetrically arranged outside the steel pipe pile, the mounting sleeve 1 and the mounting sleeve 2 are both provided with a connecting mechanism at one end away from each other, a plurality of groups of the steel pipe piles equidistantly arranged are arranged inside the mounting sleeve 1 and the mounting sleeve 2, and a water blocking mechanism is provided between any two groups of the steel pipe piles. Beneficial effect: after the mounting sleeve 1 and the mounting sleeve 2 are spliced, the steel pipe piles are inserted one by one into the gap formed by the extruded blocks, thereby reducing the influence of poor drainage, and at the same time, the entire mechanism can be disassembled when not in use through the provided operating shaft, thereby reducing the space occupied and reducing the difficulty in transportation and storage, and at the same time, when in use, the installation can be completed by rotating the operating shaft only, and after the two groups of mounting sleeves are inserted into each other's slots, the operation is simple and easy to understand.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe piles, in particular to a PC steel pipe pile for foundation pit support. Background Art

[0002] With the development of urban construction, the shortage of land resources and the need to expand underground space, there are more and more large-scale foundation pit projects and the requirements for safety and environmental protection are becoming increasingly stringent. The forms of foundation pit enclosures are gradually diversified, including underground gravity continuous wall support structure, steel sheet piles, Larsen pile support, cast-in-place pile row support, steel-cement soil mixing wall, etc.

[0003] Existing steel pipe piles are usually large in size, not easy to store and transport, and the disassembly and assembly process is relatively complicated.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a PC steel pipe pile for foundation pit support to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A PC steel pipe pile for foundation pit support comprises a steel pipe pile and a mounting sleeve 1 and a mounting sleeve 2 symmetrically arranged outside the steel pipe pile, wherein the mounting sleeve 1 and the mounting sleeve 2 are both provided with a connecting mechanism at one end away from each other, and a plurality of groups of the steel pipe piles equidistantly arranged are arranged inside the mounting sleeve 1 and the mounting sleeve 2, and a water blocking mechanism is provided between any two groups of the steel pipe piles.

[0008] Preferably, the connecting mechanism includes a connecting plate arranged at one end of the mounting sleeve, the connecting plate is provided with a plurality of groups of equidistant bolt holes, the mounting sleeve is provided with fixing bolts matching the bolt holes, one side of the connecting plate is connected to the foundation pit, a plurality of groups of equidistant mounting holes are provided on one side of the top of the foundation pit, an L-shaped clamping rod matching the mounting holes is provided at the top of the mounting sleeve, and a rotating shaft is provided at the connection between the L-shaped clamping rod and the mounting sleeve.

[0009] Preferably, the ends of the installation sleeve 1 and the installation sleeve 2 that are away from each other are both provided with hanging rings.

[0010] Preferably, the water-blocking mechanism includes an extrusion block arranged between the two groups of the steel pipe piles, both ends of the extrusion block are in contact with the steel pipe piles, any group of the extrusion blocks are connected to the mounting sleeve one and the mounting sleeve two, a main shaft is provided in the mounting sleeve one and the mounting sleeve two, a shrinkage frame is provided outside the main shaft located in the mounting sleeve two, a plurality of groups of the extrusion blocks are arranged equidistantly on the shrinkage frame, and an operating shaft connected to the corresponding main shaft is provided at the top of the mounting sleeve one and the mounting sleeve two.

[0011] Preferably, a connecting track symmetrically arranged up and down is provided on one side of the two groups of main shafts close to each other, and the connecting track can allow the shrinking frame to slide.

[0012] Preferably, the outside of the mounting sleeve 1 and the mounting sleeve 2 are both provided with a wear-resistant coating.

[0013] Preferably, one side of the installation sleeve 1 and the installation sleeve 2 is provided with a clamping hole, and a press-type buckle is provided in the clamping hole.

[0014] Preferably, the clamping hole matches the shrinkage frame.

[0015] The beneficial effects of the utility model are as follows: after the installation sleeve one and the installation sleeve two are spliced ​​together, the steel pipe piles are inserted one by one into the gaps formed by the extruded blocks, thereby reducing the impact of poor drainage; at the same time, the entire mechanism can be disassembled when not in use through the provided operating shaft, thereby reducing the space occupied and the difficulty in transportation and storage; at the same time, when in use, the installation can be completed by rotating the operating shaft only, and after the two sets of installation sleeves are inserted into each other's slots, the operation is simple and easy to understand. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is an appearance diagram of a PC steel pipe pile for foundation pit support according to an embodiment of the utility model;

[0018] Figure 2 It is a structural schematic diagram of a PC steel pipe pile installation sleeve 1 (installation sleeve 2) for foundation pit support and a foundation pit connection part according to an embodiment of the utility model;

[0019] Figure 3 It is a top view of a PC steel pipe pile structure for foundation pit support according to an embodiment of the utility model.

[0020] In the figure:

[0021] 1. Steel pipe pile; 2. Installation sleeve 1; 3. Installation sleeve 2; 4. Connecting plate; 5. Bolt hole; 6. Fixing bolt; 7. Installation hole; 8. L-shaped clamping rod; 9. Extrusion block; 10. Main shaft; 11. Retraction frame; 12. Operating shaft; 13. Connecting track; 14. Clamping hole. DETAILED DESCRIPTION

[0022] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0023] According to an embodiment of the utility model, a PC steel pipe pile for foundation pit support is provided.

[0024] Embodiment 1;

[0025] like Figure 1 As shown, according to the embodiment of the utility model, the PC steel pipe pile for foundation pit support includes a steel pipe pile 1 and an installation sleeve 1 2 and an installation sleeve 2 3 symmetrically arranged outside the steel pipe pile 1, the ends of the installation sleeve 1 2 and the installation sleeve 2 3 away from each other are provided with a connecting mechanism, the installation sleeve 1 2 and the installation sleeve 2 3 are provided with a plurality of groups of the steel pipe piles 1 equidistantly arranged, and a water-blocking mechanism is provided between any two groups of the steel pipe piles 1, the ends of the installation sleeve 1 2 and the installation sleeve 2 3 away from each other are provided with a lifting ring, the outside of the installation sleeve 1 2 and the installation sleeve 2 3 are provided with a wear-resistant coating, and one side of the installation sleeve 1 2 and the installation sleeve 2 3 are provided with a clamping hole 14, and a press-type buckle is provided in the clamping hole 14, and the clamping hole 14 matches the shrinkage frame 11.

[0026] Embodiment 2:

[0027] like Figure 2 As shown, the connecting mechanism includes a connecting plate 4 arranged at one end of the mounting sleeve 2, the connecting plate 4 is provided with a plurality of groups of equidistant bolt holes 5, the mounting sleeve 2 is provided with fixing bolts 6 matching the bolt holes 5, one side of the connecting plate 4 is connected to the foundation pit, a plurality of groups of equidistant mounting holes 7 are provided on one side of the top of the foundation pit, an L-shaped clamping rod 8 matching the mounting holes 7 is provided on the top of the mounting sleeve 2, a rotating shaft is provided at the joint between the L-shaped clamping rod 8 and the mounting sleeve 2, and a lifting ring is provided at the ends of the mounting sleeve 2 and the mounting sleeve 2 3 away from each other.

[0028] Embodiment three;

[0029] like Figure 1 and Figure 3 As shown, the water-blocking mechanism includes an extrusion block 9 arranged between the two groups of steel pipe piles 1, both ends of the extrusion block 9 are in contact with the steel pipe piles 1, any group of the extrusion blocks 9 are connected to the mounting sleeve 1 2 and the mounting sleeve 2 3, the mounting sleeve 1 2 and the mounting sleeve 2 3 are each provided with a main shaft 10, the main shaft 10 located in the mounting sleeve 2 3 is outerly provided with a shrinkage frame 11, the shrinkage frame 11 is provided with a plurality of groups of the extrusion blocks 9 arranged equidistantly, the top of the mounting sleeve 1 2 and the mounting sleeve 2 3 are each provided with an operating shaft 12 connected to the corresponding main shaft 10, and a connecting track 13 symmetrically arranged up and down is provided on the side where the two groups of the main shafts 10 are close to each other, and the connecting track 13 can allow the shrinkage frame 11 to slide.

[0030] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0031] In actual application, first, the installation sleeve 1 2 and the installation sleeve 2 3 are lifted to the top of the foundation pit through the lifting ring, and then the connecting plate 4 is placed on the edge of the foundation pit, and the connecting plate 4 is fixedly connected to the edge of the foundation pit with the fixing bolts 6, and then the L-shaped clamping rod 8 is inserted into the installation hole 7 to further fix the position of the installation sleeve 1 2. Subsequently, the steel pipe pile 1 is placed in the installation sleeve 1 2 and the installation sleeve 2 3 in turn, ensuring that there is an appropriate gap between the steel pipe piles 1; next, the main shaft 10 is rotated by the operating shaft 12, and the main shaft 10 drives the shrinking frame 11 to slide on the connecting track 13, so that the squeeze block 9 on the shrinking frame 11 gradually approaches the steel pipe pile 1 until the squeeze block 9 fits tightly with the steel pipe pile 1. In this way, the squeeze block 9 can effectively prevent groundwater or other liquids from penetrating into the foundation pit through the gap between the steel pipe piles 1, and plays a role in water blocking; at the same time, since the installation sleeve 1 2 and the installation sleeve 2 3 are both provided with a wear-resistant coating on the outside, their service life and durability can be improved. In addition, the push-type buckle in the card hole 14 can match with the retraction frame 11, so as to facilitate the fixing or releasing of the retraction frame 11 when needed; when the foundation pit support work is completed, the operating shaft 12 can be rotated in the reverse direction to make the retraction frame 11 drive the extrusion block 9 away from the steel pipe pile 1, and then the steel pipe pile 1 can be taken out one by one, and finally the installation sleeve 1 2 and the installation sleeve 2 3 can be lifted away from the foundation pit through the lifting ring to complete the disassembly work.

[0032] To sum up, with the help of the above-mentioned technical scheme of the utility model, after the installation sleeve 1 2 and the installation sleeve 2 3 are spliced, the steel pipe piles 1 are inserted one by one into the gap formed by the extrusion blocks 9, thereby reducing the impact of poor drainage. At the same time, the entire mechanism can be disassembled when not in use through the set operating shaft 12, thereby reducing the space occupied and reducing the difficulty in transportation and storage. At the same time, when in use, it is only necessary to rotate the operating shaft 11, and after the two sets of installation sleeves are inserted into each other's slots 14, the installation can be completed. The operation is simple and easy to understand.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PC steel pipe pile for foundation pit support, characterized in that: The invention comprises a steel pipe pile (1) and a mounting sleeve 1 (2) and a mounting sleeve 2 (3) symmetrically arranged outside the steel pipe pile (1), wherein the mounting sleeve 1 (2) and the mounting sleeve 2 (3) are provided with a connecting mechanism at their ends which are far from each other, and a plurality of groups of the steel pipe piles (1) which are equidistantly arranged are arranged inside the mounting sleeve 1 (2) and the mounting sleeve 2 (3), and a water blocking mechanism is provided between any two groups of the steel pipe piles (1).

2. A PC steel pipe pile for foundation pit support according to claim 1, characterized in that: The connection mechanism comprises a connecting plate (4) arranged at one end of the installation sleeve (2), the connecting plate (4) being provided with a plurality of groups of bolt holes (5) arranged at equal distances, the installation sleeve (2) being provided with fixing bolts (6) matching the bolt holes (5), one side of the connecting plate (4) being connected to the foundation pit, a plurality of groups of mounting holes (7) arranged at equal distances being provided on one side of the top of the foundation pit, an L-shaped clamping rod (8) matching the mounting holes (7) being provided at the top of the installation sleeve (2), and a rotating shaft being provided at the connection between the L-shaped clamping rod (8) and the installation sleeve (2).

3. A PC steel pipe pile for foundation pit support according to claim 1, characterized in that: The ends of the installation sleeve 1 (2) and the installation sleeve 2 (3) which are away from each other are both provided with lifting rings.

4. The PC steel pipe pile for foundation pit support according to claim 1, characterized in that: The water blocking mechanism comprises an extrusion block (9) arranged between two groups of the steel pipe piles (1), both ends of the extrusion block (9) are in contact with the steel pipe piles (1), any group of the extrusion blocks (9) are connected to the installation sleeve 1 (2) and the installation sleeve 2 (3), a main shaft (10) is arranged inside the installation sleeve 1 (2) and the installation sleeve 2 (3), a shrinkage frame (11) is arranged outside the main shaft (10) located in the installation sleeve 2 (3), a plurality of groups of the extrusion blocks (9) are arranged at equal distances on the shrinkage frame (11), and an operating shaft (12) connected to the corresponding main shaft (10) is arranged at the top of the installation sleeve 1 (2) and the installation sleeve 2 (3).

5. A PC steel pipe pile for foundation pit support according to claim 4, characterized in that: A connecting track (13) symmetrically arranged up and down is provided on one side of the two groups of main shafts (10) close to each other, and the connecting track (13) can allow the shrinking frame (11) to slide.

6. The PC steel pipe pile for foundation pit support according to claim 1, characterized in that: The outside of the installation sleeve 1 (2) and the installation sleeve 2 (3) are both provided with a wear-resistant coating.

7. The PC steel pipe pile for foundation pit support according to claim 4, characterized in that: A clamping hole (14) is provided on one side of the installation sleeve 1 (2) and the installation sleeve 2 (3), and a press-type clamp is provided in the clamping hole (14).

8. The PC steel pipe pile for foundation pit support according to claim 7, characterized in that: The clamping hole (14) matches the shrinkage frame (11).

Images