Screw-in type assembly for pressure type anti-floating pile

Abstract

The utility model relates to the technical field of anti-floating pile structural members, in particular to a screw-in assembly for a pressure type anti-floating pile, and a lower anti-floating member comprises a lower steel pipe and a lower fin spirally arranged on the outer wall of the lower steel pipe along the length direction of the lower steel pipe; the upper anti-floating component comprises an upper steel pipe and an upper fin spirally arranged on the outer wall of the upper steel pipe in the length direction of the upper steel pipe; the unbonded steel strand is used for connecting the lower anti-floating component and the upper anti-floating component which are not connected in a penetrating manner; the lower anchorage device structure is used for being clamped and fixed with the lower extension part; and the upper anchorage device structure is used for being clamped and fixed with the upper extension part. According to the anti-floating pile, the unbonded steel strand is connected with the lower anti-floating component and the upper anti-floating component which are located at the bottom and the top of the anti-floating pile in a penetrating mode and provided with the lower wing piece and the upper wing piece, then the unbonded steel strand is locked and prestress is applied to the unbonded steel strand through the lower anchorage device structure and the upper anchorage device structure, and the contact area of the anti-floating component and the pile body is increased; the anti-floating pile body is evenly stressed, the pressure resistance of the pile body is improved, and the pile body is not prone to cracking.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-floating pile structural parts, in particular to a screw-in assembly part used for pressure-type anti-floating piles. Background Art

[0002] At present, the most commonly used methods to solve the anti-floating problem of buildings are the anti-floating anchor method and the anti-floating pile method. The design and construction are carried out in accordance with national standards, and the pull-out bearing capacity can meet the design requirements. However, during the service life of the anti-floating components, the durability of the anti-floating components is often reduced due to problems such as the selection of pile materials, crack control measures, and reinforcement corrosion protection, which affects the service life of the anti-floating components and causes safety hazards to the buildings.

[0003] As the design requirements for anti-floating components in various provinces across the country become more stringent, pressure-type anti-floating design is gradually being required to be adopted compulsorily. For pressure-type anti-floating design, the pile material is mostly concrete or cement mortar, and the reinforcement material is mainly steel strand or fine-rolled threaded steel. Among them, the selection of concrete and steel strand has the advantages of low cost and the ability to apply clear prestress. However, there are many technical difficulties in installing steel strands in the concrete of anti-floating piles, effectively connecting them with the foundation slab, and clearly applying prestress.

[0004] Conventional pressure-type anti-floating components use steel plate bearing bodies. Due to the limitations of the installation method, the bearing body size is often very small, and the contact area between it and the pile body is too small. After the prestress is applied, stress concentration will occur, causing local crushing of the anti-pull-out component, thereby reducing the service life of the anti-pull-out component; in addition, conventional pressure-type anti-floating components are connected to the foundation slab and prestress is applied, which will cause local high pressure on the foundation slab, causing the risk of cracks and leakage in the foundation slab. Utility Model Content

[0005] In order to solve at least one of the above-mentioned technical problems, the utility model proposes a screw-in assembly for pressure-type anti-floating piles, which connects the lower anti-floating component and the upper anti-floating component with lower wing and upper wing located at the bottom and top of the anti-floating pile through unbonded steel strands, and then locks and applies prestress to the unbonded steel strands through the lower anchor structure and the upper anchor structure, thereby solving the problems of small contact area between the anti-floating component and the pile body of conventional anti-floating piles, uneven force on the anti-floating pile body, poor compressive resistance of the pile body, and easy cracks in the pile body.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A screw-in assembly for a pressure-type anti-floating pile, comprising:

[0008] A lower anti-floating member, the lower anti-floating member comprising a lower steel pipe and a lower wing spirally arranged on an outer wall of the lower steel pipe along a length direction thereof;

[0009] An upper anti-floating member, the upper anti-floating member comprising an upper steel pipe and an upper wing spirally arranged on an outer wall of the upper steel pipe along a length direction thereof;

[0010] An unbonded steel strand, which is used to penetrate and connect the unconnected lower anti-floating member and the upper anti-floating member, and the unbonded steel strand extends to the lower part of the lower steel pipe and the upper part of the upper steel pipe to form a lower extension part and an upper extension part;

[0011] A lower anchor structure, which is used to be clamped and fixed with the lower extension;

[0012] An upper anchor structure is used for being clamped and fixed with the upper extension portion.

[0013] Preferably, the lower anchor structure comprises a lower pressure plate, an extrusion anchor and a limit plate through which the unbonded steel strands are sequentially passed from top to bottom, and the lower pressure sleeve is arranged at the lower part of the lower steel pipe.

[0014] Preferably, a guide cap is sleeved on the lower portion of the lower steel pipe, and a sealed space is formed between the interior of the guide cap and the lower portion of the lower steel pipe for accommodating the lower pressure plate, the backlog anchor and the limit plate.

[0015] Preferably, the upper portion of the guide cap is a hollow cylinder, and the lower portion is a hollow cone.

[0016] Preferably, the guide cap is filled with waterproof sealant.

[0017] Preferably, the upper anchor structure includes an upper pressure plate and a clip anchor which are sequentially penetrated from bottom to top and contact the upper part of the upper steel pipe.

[0018] Preferably, the upper parts of the lower anti-floating member and the upper anti-floating member are both provided with slots for facilitating the rotational engagement of the drilling rig with the lower anti-floating member and the upper anti-floating member.

[0019] Preferably, the lower anti-floating member is located at the bottom of the anti-floating pile, and the upper portion of the upper anti-floating member extends out of the top of the anti-floating pile.

[0020] Preferably, the upper anti-buoyancy component and the lower anti-buoyancy component are symmetrical structures.

[0021] Preferably, the upper wing sheet and the lower wing sheet are single-layer or multi-layer.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. The utility model connects the lower anti-floating component and the upper anti-floating component which are not connected at the bottom and the top of the anti-floating pile through the unbonded steel strand, and realizes the locking of the unbonded steel strand and the transmission of prestress through the lower anchor structure and the upper anchor structure. By applying prestress to the upper anti-floating component and the lower anti-floating component, the pile body of the anti-floating pile is always in a compressed state, thereby ensuring that no cracks will be generated in the pile body, and no crack verification is required. At the same time, by setting the upper wing and the lower wing, when the upper anti-floating component and the lower anti-floating component are screwed into the anti-floating pile, the upper wing and the lower wing play a role in guiding and stirring the concrete of the anti-floating pile, so that the upper anti-floating component and the lower anti-floating component are tightly wrapped with the pile body, the contact area becomes larger, and the compressive resistance of the pile body is improved. The upper anti-floating component and the lower anti-floating component with symmetrical structure make the pile body evenly stressed after the prestress is applied, and no local damage will be caused by inconsistent bearing bodies.

[0024] 2. The utility model provides a guide cap to seal the lower pressure plate, the backlog anchor and the limit plate in the guide cap, and fills the guide cap with waterproof sealant, thereby improving the waterproof and anti-corrosion performance and thus increasing the overall service life of the assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a screw-in assembly for pressure-type anti-floating piles;

[0026] Figure 2 It is a structural schematic diagram of the middle and lower anti-floating components of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the upper anti-floating component of the utility model;

[0028] Figure 4 It is an exploded view of the middle and lower anti-floating components of the utility model;

[0029] Figure 5 It is an exploded view of the upper anti-floating component of the utility model;

[0030] Figure 6 It is a top view of the limiting plate in the utility model;

[0031] In the figure: 1. lower anti-floating member; 11. lower steel pipe; 12. lower wing; 2. upper anti-floating member; 21. upper steel pipe; 22. upper wing; 3. unbonded steel strand; 4. lower anchor structure; 41. lower pressure plate; 42. extrusion anchor; 43. limit plate; 431. positioning hole; 432. fixing hole; 5. upper anchor structure; 51. upper pressure plate; 52. clip anchor; 6. guide cap; 7. anti-floating pile; 8. base bottom plate; 9. slot. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments of the present invention.

[0033] Please refer to Figure 1-6 As shown, a screw-in assembly for a pressure-type anti-floating pile comprises:

[0034] A lower anti-floating member 1, comprising a lower steel pipe 11 and a lower wing 12 spirally arranged on the outer wall of the lower steel pipe 11 along the length direction thereof;

[0035] The upper anti-floating member 2 comprises an upper steel pipe 21 and an upper wing 22 spirally arranged on the outer wall of the upper steel pipe 21 along the length direction thereof;

[0036] The unbonded steel strand 3 is used to penetrate and connect the unconnected lower anti-buoyancy member 1 and the upper anti-buoyancy member 2. The unbonded steel strand 3 extends to the lower part of the lower steel pipe 11 and the upper part of the upper steel pipe 21 to form a lower extension part and an upper extension part;

[0037] A lower anchor structure 4, which is used to be clamped and fixed with the lower extension;

[0038] The upper anchor structure 5 is used to be clamped and fixed with the upper extension part.

[0039] In this embodiment, the lower anti-floating component 1 and the upper anti-floating component 2, which are not connected at the bottom and the top of the anti-floating pile 7, are connected through the unbonded steel strand 3, and the locking and prestressing of the unbonded steel strand 3 are realized through the lower anchor structure 4 and the upper anchor structure 5. By applying prestress to the upper anti-floating component 2 and the lower anti-floating component 1, the pile body of the anti-floating pile 7 is always in a compressed state, thereby ensuring that no cracks will occur in the pile body, and no crack verification is required. At the same time, by setting the upper wing 22 and the lower wing 12, when the upper anti-floating component 2 and the lower anti-floating component 1 are screwed into the anti-floating pile 7, the upper wing 22 and the lower wing 12 play a role in guiding and stirring the concrete of the anti-floating pile 7, so that the upper anti-floating component 2 and the lower anti-floating component 1 are tightly wrapped with the pile body, the contact area becomes larger, and the compressive resistance of the pile body is improved.

[0040] like Figure 1-3 As shown, the upper anti-floating member 2 and the lower anti-floating member 1 are symmetrical structures. It can be understood that the symmetrical upper anti-floating member 2 and the lower anti-floating member 1 make the pile body evenly stressed after the prestress is applied, and no local damage will be caused by inconsistent bearing bodies.

[0041] Specifically, the upper wing 22 and the lower wing 12 in this embodiment are continuously spirally arranged outside the upper steel tube 21 and the lower steel tube 11. The symmetry here includes that the upper wing 22 and the lower wing 12 have the same size, the same number of turns and the same pitch. That is, the total length of the upper wing 22 and the lower wing 12 is the same.

[0042] It should be noted that, in the present embodiment, the upper wing piece 22 and the lower wing piece 12 are single-layered. In actual operation, the upper wing piece 22 and the lower wing piece 12 can be configured as multiple layers according to construction requirements.

[0043] Please refer to Figure 4 As shown, the lower anchor structure 4 includes a lower pressure plate 41 , an extrusion anchor 42 and a limit plate 43 through which the unbonded steel strands 3 are sequentially passed from top to bottom, and the lower pressure sleeve is arranged at the lower part of the lower steel pipe 11 .

[0044] It should be noted that, in order to facilitate the passage and positioning of the unbonded steel strands 3, positioning holes 431 are provided on the lower pressure plate 41, the extrusion anchor 42 and the limit plate 43 in this embodiment, and the arrangement of the positioning holes 431 should be consistent. Figure 6 The distribution of the positioning holes 431 on the limiting plate 43 in this embodiment is shown. In this embodiment, the number of the unbonded steel strands 3 is 5, wherein the arrangement is: with one unbonded steel strand 3 in the center as the center of the circle, four unbonded steel strands 3 are arranged in a circular array around the center. Of course, the arrangement of the unbonded steel strands can be determined according to their number and construction requirements.

[0045] In order to facilitate the fixing of the lower pressure plate 41 and the limiting plate 43 , in this embodiment, fixing holes 432 are provided on the lower pressure plate 41 and the limiting plate 43 , and fixing is achieved by tension bolts or the like.

[0046] Please refer to Figure 4 As shown, a guide cap 6 is sleeved on the lower part of the lower steel pipe 11 , and a sealed space for accommodating the lower pressure plate 41 , the backlog anchor and the limit plate 43 is formed inside the guide cap 6 and the lower part of the lower steel pipe 11 .

[0047] Specifically, in this embodiment, the upper portion of the guide cap 6 is a hollow cylinder, and the lower portion is a hollow cone. In order to facilitate the fixing of the guide cap 6 and the lower steel pipe 11, the two can be further fixed by electric welding.

[0048] In order to improve the waterproof and anti-corrosion performance and thus increase the service life of the entire assembly, in this embodiment, the guide cap 6 is filled with waterproof sealant (not shown in the figure).

[0049] like Figure 5 As shown, the upper anchor structure 5 includes an upper pressure plate 51 and a clip anchor 52 which are sequentially penetrated from bottom to top and contact the upper part of the upper steel pipe 21.

[0050] It should be noted that, in this embodiment, the lower anti-floating member 1 is located at the bottom of the anti-floating pile 7, and the upper part of the upper anti-floating pile 7 extends out of the top of the anti-floating pile 7. Specifically, the upper anti-floating member 2 and the upper anchor structure 5 are installed in a split manner, that is, the upper anti-floating member 2 is first screwed into the top of the anti-floating pile 7 through the drilling rig part, and then the part of the upper anti-floating member 2 extending out of the anti-floating pile 7 and the upper anchor structure 5 are locked through the foundation bottom plate.

[0051] The above-mentioned clip anchor 52 and extrusion anchor 42 belong to the prior art, and the present application does not elaborate on their structures and working principles.

[0052] Please refer to Figure 4 and Figure 5 As shown, the upper parts of the lower anti-buoyancy component 1 and the upper anti-buoyancy component 2 are both provided with a clamping groove 9 for facilitating the rotational engagement of the drilling rig with the lower anti-buoyancy component 1 and the upper anti-buoyancy component 2 .

[0053] Specifically, when it is necessary to screw the lower anti-floating component 1 and the upper anti-floating component 2 into the anti-floating pile 7, the drilling rig can be equipped with suitable drilling tools, such as a catheter carrying a clamping head structure that is compatible with the clamping slot 9. The clamping head is plugged and locked with the clamping slot 9, and the drilling rig is rotated and pressed down to screw the lower anti-floating component 1 and the upper anti-floating component 2 into the anti-floating pile 7.

[0054] The utility model connects the lower anti-floating component 1 and the upper anti-floating component 2 which are not connected at the bottom and the top of the anti-floating pile 7 through the unbonded steel strand 3, and realizes the locking of the unbonded steel strand 3 and the transmission of prestress through the lower anchor structure 4 and the upper anchor structure 5. By applying prestress to the upper anti-floating component 2 and the lower anti-floating component 1, the pile body of the anti-floating pile 7 is always in a compressed state, thereby ensuring that no cracks will occur in the pile body, and no crack verification is required. At the same time, by setting the upper wing 22 and the lower wing 12, when the upper anti-floating component 2 and the lower anti-floating component 1 are screwed into the anti-floating pile 7, the upper wing 22 and the lower wing 12 play a role in guiding and stirring the concrete of the anti-floating pile 7, so that the upper anti-floating component 2 and the lower anti-floating component 1 are tightly wrapped with the pile body, the contact area becomes larger, and the compressive resistance of the pile body is improved. The symmetrical upper anti-floating member 2 and the lower anti-floating member 1 ensure that after the prestress is applied, the pile body is evenly stressed and will not be locally damaged due to the inconsistency of the bearing body. By setting the guide cap 6, the lower pressure plate 41, the backlog anchor and the limit plate 43 are sealed in the guide cap 6, and the guide cap 6 is filled with waterproof sealant, the waterproof and anti-corrosion performance is improved, thereby increasing the service life of the assembly as a whole.

[0055] The above is a specific implementation of the embodiment of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications should also be regarded as the scope of protection of this application.

Claims

1. A screw-in assembly for pressure-type anti-floating piles, characterized in that: include: A lower anti-floating component (1), the lower anti-floating component (1) comprising a lower steel pipe (11) and a lower wing (12) spirally arranged on the outer wall of the lower steel pipe (11) along the length direction of the lower steel pipe (11); An upper anti-floating component (2), the upper anti-floating component (2) comprising an upper steel pipe (21) and an upper wing (22) spirally arranged on the outer wall of the upper steel pipe (21) along the length direction of the upper steel pipe (21); An unbonded steel strand (3) is used to penetrate and connect the unconnected lower anti-floating member (1) and the upper anti-floating member (2), and the unbonded steel strand (3) extends to the lower part of the lower steel pipe (11) and the upper part of the upper steel pipe (21) to form a lower extension part and an upper extension part; A lower anchor structure (4) used for being clamped and fixed with the lower extension; An upper anchor structure (5) is used to be clamped and fixed with the upper extension portion.

2. The screw-in assembly for pressure-type anti-floating piles according to claim 1, characterized in that: The lower anchor structure (4) comprises a lower pressure plate (41), a squeeze anchor (42) and a limit plate (43) through which the unbonded steel strands (3) are sequentially passed from top to bottom, and the lower pressure sleeve is arranged at the lower part of the lower steel pipe (11).

3. The screw-in assembly for pressure-type anti-floating piles according to claim 2, characterized in that: The lower part of the lower steel pipe (11) is sleeved with a guide cap (6), and the interior of the guide cap (6) and the lower part of the lower steel pipe (11) form a sealed space for accommodating the lower pressure plate (41), the backlog anchor and the limit plate (43).

4. The screw-in assembly for pressure-type anti-floating piles according to claim 3, characterized in that: The guide cap (6) has a hollow cylinder at the top and a hollow cone at the bottom.

5. The screw-in assembly for pressure-type anti-floating piles according to claim 4, characterized in that: The guide cap (6) is filled with waterproof sealant.

6. The screw-in assembly for pressure-type anti-floating piles according to claim 1, characterized in that: The upper anchor structure (5) comprises an upper pressure plate (51) and a clip anchor (52) which are sequentially penetrated from bottom to top and contact the upper part of the upper steel pipe (21).

7. The screw-in assembly for pressure-type anti-floating piles according to claim 1, characterized in that: The upper parts of the lower anti-floating component (1) and the upper anti-floating component (2) are both provided with a clamping groove (9) for facilitating the rotational clamping of the drilling rig with the lower anti-floating component (1) and the upper anti-floating component (2).

8. The screw-in assembly for pressure-type anti-floating piles according to claim 1, characterized in that: The lower anti-floating component (1) is located at the bottom of the anti-floating pile (7), and the upper part of the upper anti-floating component (2) extends out of the top of the anti-floating pile (7).

9. The screw-in assembly for pressure-type anti-floating piles according to claim 1, characterized in that: The upper anti-floating component (2) and the lower anti-floating component (1) are symmetrical structures.

10. The screw-in assembly for pressure-type anti-floating piles according to any one of claims 1 to 9, characterized in that: The upper wing sheet (22) and the lower wing sheet (12) are single-layer or multi-layer.

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