CN220246894U - Bamboo joint type prefabricated square pile - Google Patents
Bamboo joint type prefabricated square pile Download PDFInfo
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- CN220246894U CN220246894U CN202321539135.6U CN202321539135U CN220246894U CN 220246894 U CN220246894 U CN 220246894U CN 202321539135 U CN202321539135 U CN 202321539135U CN 220246894 U CN220246894 U CN 220246894U
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 49
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 49
- 241001330002 Bambuseae Species 0.000 title claims abstract description 49
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 49
- 239000011425 bamboo Substances 0.000 title claims abstract description 49
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010008 shearing Methods 0.000 abstract description 3
- 239000002689 soil Substances 0.000 description 13
- 238000010276 construction Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model provides a bamboo joint type prefabricated square pile, on the basis of the existing prefabricated square pile, a plurality of externally-expanded diameter-expanding ends are arranged on a square pile body along the axial direction, the sections of the diameter-expanding ends are square with four right-angle parts, compared with a bamboo joint type tubular pile, under the condition of equal cross sections of the same length, the contact area of the bamboo joint type square pile in a ground is larger, the bearing load is larger, a diameter-reducing section is formed between two adjacent diameter-expanding ends, friction-increasing surfaces are arranged on the outer side walls of the diameter-expanding ends, the friction-increasing surfaces are longitudinal planes parallel to the pile body, the side friction resistance born by the outer side of the pile body is enhanced due to the existence of the friction-increasing surfaces, the upper ends and the lower ends of the friction-increasing surfaces are respectively connected with the adjacent diameter-reducing sections in a transitional mode through inclined shrinkage surfaces, an included angle is formed between the shrinkage surfaces and the central shaft of the pile body, the diameter-expanding ends are mutually matched with the diameter-reducing sections, and the whole compressive resistance bearing capacity and horizontal shearing resistance of the bamboo joint type prefabricated square pile are improved.
Description
Technical Field
The utility model relates to the field of pile foundation construction, in particular to a bamboo joint type prefabricated square pile.
Background
With the increasing development of modern infrastructure, building heights and areas in cities are gradually expanding, and requirements for firmness and bearing capacity of building foundations are also increasing in order to construct safe and firm buildings. In pile foundation construction, pile piles are often adopted to enhance foundation stability, the pile section of the pile piles is circular, the construction process of the pile piles is mature, and the construction period of the pile piles is short, but because the pile piles are cylinders with equal diameters, the contact area between the outer surfaces of the pile piles and soil bodies in stratum is limited, and the side friction resistance between the pile piles and the stratum is small. The bamboo-type pipe pile is developed on the basis, a plurality of raised supporting plates are added on the outer side of the pile body, the contact area between the pile body and soil body is increased, the side friction resistance of the pile is enhanced, the whole bearing capacity is improved, but the structure at the raised position is fragile, the pile is easy to crack and damage in the production and construction process, and the pile section of the pipe pile is circular, so that the compression bearing capacity is difficult to meet higher requirements under certain specific construction conditions.
The square pile has the advantages that the square pile is still on the market at present, the pile section of the square pile is square, compared with the tubular pile with the same cross section of length, the contact area of the square pile and soil body in stratum is large, the vertical compression resistance and the anti-pulling bearing capacity and the horizontal shearing resistance are stronger, the pile body of the square pile is small in size, the consumption of steel bars is small, the manufacturing consumption is small, the construction cost can be effectively reduced, the production process of the square pile is almost the same, the four steps of feeding, tensioning, steam curing and demolding in the production process are integrated together, the production efficiency is effectively improved, the labor cost is reduced, the existing square pile is a flat square column body, the contact area of the outer surface of the pile body and the soil body in the stratum is limited, and the generated side friction is not high.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide the bamboo joint type prefabricated square pile, on the basis of the existing prefabricated square pile, a plurality of outward expansion diameter-enlarging ends are arranged on a square pile body along the axial direction, the cross section of each expansion diameter-enlarging end is square with four right-angle parts, the contact area between the pile body and soil in a stratum is increased, and compared with the bamboo joint type tubular pile, under the condition that the diameter of each tubular pile expansion diameter-enlarging end is the same as the side length of the square pile expansion diameter end, the cross section area of the bamboo joint type square pile is larger than four right-angle parts, namely the outward expansion area is larger, the repose angle between the pile body and the soil is larger, and the compression resistance and the pulling resistance bearing capacity are stronger.
The technical scheme of the utility model is realized as follows:
the utility model provides a prefabricated square pile of bamboo joint formula, includes pile body and along the spacing a plurality of expanded diameter ends of pile body axial direction upwards, the cross-section of expanded diameter end is square that has four right angle portions, is formed with the reducing section between two adjacent expanded diameter ends, and the lateral wall of expanded diameter end exists increases the face of rubbing, increases the face and is the longitudinal plane parallel with the pile body, increases the upper and lower both ends of face of rubbing respectively with adjacent reducing section between through shrink face transitional coupling of slope, the contained angle exists between the center pin of shrink face and pile body.
Preferably, the diameter-expanding end is a closed structure horizontally arranged around the outer side wall of the pile body. The expanding end is arranged outside the pile body in a closed mode, so that the contact range of the expanding end and soil in the stratum is greatly stressed more uniformly.
Preferably, the height of the friction increasing surface is 50mm to 155mm. The height of the friction-increasing surface can be selected in a large range, so that the bamboo joint type prefabricated square pile can adapt to various stratum structures.
Preferably, the height of the friction increasing surface is 85mm to 105mm. The friction-increasing surface of the expanding end is increased, namely the contact area between the expanding end and soil body is increased, and the integral bearing capacity of the bamboo joint type prefabricated square pile is improved.
Preferably, the protruding height of the friction increasing surface is 0.05-0.2 times of the square side length of the reducing section. The protruding height of the friction-increasing surface is matched with the square edge length of the reducing section, so that the stress balance and the overall stability of the bamboo joint type square pile are ensured.
Preferably, the included angle is in the range of 25 ° to 65 °. The whole size of the diameter expanding end can be influenced by the selection of the included angle between the shrinkage surface and the central shaft of the pile body, and in a proper range, the smaller the included angle is, namely the smaller the inclination angle of the shrinkage surface is, the less the diameter expanding end is easy to be stressed and broken when in use.
Preferably, the included angle is in the range of 35 ° to 55 °. And a proper included angle is selected in a small range, the size of the shrinkage surface is increased, the contact area between the pile body and soil in the stratum is increased, and the side friction resistance born by the bamboo joint type prefabricated square pile is increased.
Preferably, the diameter-expanding ends are arranged at equal intervals outside the pile body. Equidistant hole expansion ends are arranged, so that the bamboo joint type prefabricated square pile is guaranteed to be uniformly stressed when being used in a stratum.
Preferably, the distance between two adjacent expanded diameter ends is 1 to 5 times of the square side length of the expanded diameter ends. The spacing selection of two adjacent expanded diameter ends is matched with the shape side length of the expanded diameter end, which is helpful for improving the overall stability of the pile body.
Preferably, the top end of the right-angle part is provided with a round chamfer, and the radius of the round chamfer is 20-50mm. The arrangement of the round chamfer on the right angle part of the diameter-expanding end is beneficial to improving the strength of the diameter-expanding end, and the condition of breaking and cracking is avoided.
Preferably, one or both ends of the pile body are provided with pile end amplifying parts, the square side length of the pile end amplifying parts is longer than that of the pile body, and the height of the pile end amplifying parts is 300-1000 mm. The pile end amplifying part is arranged at the pile end, so that the strength of the pile end is improved, the pile end is not easy to damage during construction, and the impact resistance of the bamboo joint type prefabricated square pile is greatly improved.
The principle and beneficial effects of the utility model adopting the technical scheme are as follows:
the utility model provides a bamboo joint type prefabricated square pile, on the basis of the existing prefabricated square pile, a plurality of externally-expanded diameter-expanding ends are arranged on a square pile body along the axial direction, the sections of the diameter-expanding ends are square with four right-angle parts, compared with a bamboo joint type tubular pile, under the condition of equal cross sections of the same length, the contact area of the bamboo joint type square pile in a ground is larger, the bearing load is larger, a diameter-reducing section is formed between two adjacent diameter-expanding ends, friction-increasing surfaces are arranged on the outer side walls of the diameter-expanding ends, the friction-increasing surfaces are longitudinal planes parallel to the pile body, the side friction resistance born by the outer side of the pile body is enhanced due to the existence of the friction-increasing surfaces, the upper ends and the lower ends of the friction-increasing surfaces are respectively connected with the adjacent diameter-reducing sections in a transitional mode through inclined shrinkage surfaces, an included angle is formed between the shrinkage surfaces and the central shaft of the pile body, the diameter-expanding ends are mutually matched with the diameter-reducing sections, and the whole compressive resistance bearing capacity and horizontal shearing resistance of the bamboo joint type prefabricated square pile are improved.
Drawings
FIG. 1 is a perspective view of a bamboo joint type prefabricated square pile;
FIG. 2 is a perspective partial view of the expanded end of a bamboo joint type precast square pile;
FIG. 3 is a side view of a bamboo joint type precast square pile;
FIG. 4 is a partial schematic view of the included angle of a bamboo joint type precast square pile;
FIG. 5 is a partial schematic view of the friction-increasing surface height of a bamboo joint type precast square pile;
FIG. 6 is a partial schematic view of the expanded diameter end side of a bamboo joint type precast square pile;
FIG. 7 is a partial schematic view of the spacing between two expanded ends of a bamboo joint type prefabricated square pile;
FIG. 8 is a side view of a bamboo joint type precast square pile with an enlarged pile end portion;
FIG. 9 is a top view comparison of bamboo joint type precast square piles and bamboo joint type precast tubular piles;
the reference numerals are as follows: 1-pile body, 2-expanded diameter end, 21-friction-increasing surface, 22-right angle part, 3-diameter-reducing section, 31-shrinkage surface, 4-pile end amplifying part, alpha-included angle, h 1-friction-increasing surface height, h 2-distance between two adjacent expanded diameter ends, h 3-friction-increasing surface protruding height, d 1-expanded diameter end side length, d 2-diameter-reducing section square side length and R-round chamfer.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.
The specific embodiments of the present utility model are as follows:
as shown in fig. 1-7, the utility model provides a bamboo joint type prefabricated square pile, which comprises a pile body 1 and a plurality of diameter expansion ends 2 which are arranged at intervals along the axial direction of the pile body 1, wherein the section of the pile body 1 is square, the section of the diameter expansion ends 2 is square with four right-angle parts 22, a diameter reduction section 3 is formed between two adjacent diameter expansion ends 2, friction increasing surfaces 21 are arranged on the outer sides of the diameter expansion ends 2, the friction increasing surfaces 21 are longitudinal planes parallel to the outer side walls of the pile body 1, the upper ends and the lower ends of the friction increasing surfaces 21 are respectively connected with the adjacent diameter reduction sections 3 in a transitional manner through inclined shrinkage surfaces 22, the inclination direction of the shrinkage surfaces 22 is inclined towards the diameter expansion ends 2, and an included angle alpha is formed between the shrinkage surfaces 22 and the central axis of the pile body 1.
Specifically, as shown in fig. 1-2, the diameter-expanding end 2 is an outward-expanding closed structure horizontally arranged around the outer side wall of the pile body 1, and the diameter-expanding end 2 is arranged in a closed manner outside the pile body 1, so that the pile body 1 is more stably contacted with the soil body in the stratum, and the stress is more uniform.
Further, as shown in fig. 5, the height h1 of the friction increasing surface is 50mm to 155mm, in this embodiment, the height h1 of the friction increasing surface is 85mm, and the height h1 of the friction increasing surface 21 has a large selectable range, so that the bamboo joint type precast square pile can adapt to various stratum structures; the friction-increasing surface protruding height h3 is 0.05-0.2 times of the square side length d2 of the reducing section, the friction-increasing surface protruding height h3 is matched with the square side length d2 of the reducing section, the stress balance and the overall stability of the bamboo joint type square pile are guaranteed, the friction-increasing surface height h1 is increased, namely the contact area between the diameter-increasing end 2 and a soil body is increased, and the overall bearing capacity of the bamboo joint type prefabricated square pile is improved.
Further, as shown in fig. 4, the angle range of the included angle α is 25 ° to 65 °, in this embodiment, the angle α of the included angle α is 45 °, the whole size of the diameter expansion end 2 is affected by the selection of the included angle α between the shrinkage surface 22 and the central axis of the pile body 1, and a suitable included angle α is selected in a suitable range, the smaller the included angle α, i.e. the smaller the inclination angle of the shrinkage surface 22, the size of the shrinkage surface 22 is effectively increased, the contact area between the pile body 1 and the soil body in the stratum is enlarged, the side friction resistance of the bamboo joint type prefabricated square pile is increased, and the diameter expansion end 2 is less prone to being stressed and broken during use.
Further, as shown in fig. 6-7, the expanded diameter ends 2 are arranged at the outer side of the pile body 1 at equal intervals, so that the bamboo joint type prefabricated square pile is guaranteed to be stressed uniformly when being used in a stratum, the distance h2 between two adjacent expanded diameter ends 2 is 1 to 5 times the side length d1 of the expanded diameter end, in the embodiment, the distance h2 between two adjacent expanded diameter ends 2 is 2 times the side length d1 of the expanded diameter end, and the distance h2 between two adjacent expanded diameter ends is selected to be matched with the side length d1 of the expanded diameter end, so that the overall stability of the pile body 1 is improved.
Further, as shown in fig. 8, one end or two ends of the pile body 1 are provided with pile end amplifying portions 4, in this embodiment, the upper end of the pile body 1 is provided with the pile end amplifying portions 4, the square side length of the pile end amplifying portions 4 is larger than the square side length d2 of the reducing section, the height of the pile end amplifying portions 4 is 300mm to 1000mm, in this embodiment, the height of the pile end amplifying portions 4 is 800mm, and the pile end is provided with the pile end amplifying portions 4, which is beneficial to improving the strength of the pile end, and making the pile end not easy to break during construction, which is beneficial to the clamping of pile machine clamps during construction, so that the clamps are prevented from being clamped at bamboo joint positions, and the impact resistance of the bamboo joint type prefabricated square pile can be greatly improved.
Still further, as shown in fig. 9, the top end of the right-angle portion 22 of the expanded diameter end 2 is provided with a round chamfer R, and the radius of the round chamfer R is 20-50mm, which is helpful for improving the overall strength of the expanded diameter end 2 and avoiding the occurrence of crushing and cracking. Meanwhile, the difference between the circular bamboo-type precast square pile and the circular bamboo-type precast tubular pile shown by the dotted line is compared, when the diameter of the expanded end of the bamboo-type precast square pile is equal to the square side length d1 of the expanded end of the bamboo-type precast square pile, the contact area between the expanded end 2 of the bamboo-type precast square pile and soil in an external stratum is larger than that of the expanded end of the bamboo-type precast square pile, and four right-angle parts 22 exist at the expanded end 2 of the bamboo-type precast square pile, so that the bamboo-type precast square pile has larger compression resistance and pulling resistance bearing capacity at the expanded end 2, and therefore, the required manufacturing consumable of the bamboo-type precast square pile is relatively less under the same bearing capacity requirement, and the construction cost can be effectively reduced.
The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.
Claims (10)
1. A prefabricated square stake of bamboo joint formula, characterized by: including pile body (1) and along a plurality of expanded diameter ends (2) of pile body (1) axial direction upper and lower interval arrangement, the cross-section of expanded diameter end (2) is square that has four right angle portion (22), is formed with reducing section (3) between two adjacent expanded diameter ends (2), the lateral wall of expanded diameter end (2) exists increases face of friction (21), increase face of friction (21) be with the longitudinal plane of pile body (1) parallel, increase and respectively with adjacent reducing section (3) between the upper and lower both ends of face of friction (21) through shrink face (31) transitional coupling of slope, there is contained angle (alpha) between shrink face (31) and the center pin of pile body (1).
2. The bamboo joint type prefabricated square pile according to claim 1, wherein: the diameter-expanding end (2) is of a closed structure horizontally arranged around the outer side wall of the joint pile body (1).
3. The bamboo joint type prefabricated square pile according to claim 1, wherein: the height (h 1) of the friction increasing surface (21) is 50mm to 155mm.
4. A bamboo joint type precast square pile according to claim 3, wherein: the height (h 1) of the friction increasing surface (21) is 85mm to 105mm.
5. The bamboo joint type prefabricated square pile according to claim 1, wherein: the protruding height (h 3) of the friction increasing surface (21) is 0.05-0.2 times of the square side length (d 2) of the reducing section.
6. The bamboo joint type prefabricated square pile according to claim 1, wherein: the angle (alpha) is in the range of 25 DEG to 65 deg.
7. The bamboo joint type prefabricated square pile according to claim 5, wherein: the angle (alpha) is in the range of 35 DEG to 55 deg.
8. The bamboo joint type prefabricated square pile according to claim 1, wherein: the distance (h 2) between two adjacent expanded diameter ends (2) is 1 to 5 times of the side length (d 1) of the expanded diameter end.
9. The bamboo joint type prefabricated square pile according to claim 1, wherein: the top of the right angle part (22) is provided with a round chamfer (R), and the radius of the round chamfer (R) is 20-50mm.
10. The bamboo joint type prefabricated square pile according to claim 1, wherein: one end or two ends of the pile body (1) are provided with pile end amplifying parts (4), the square side length of the pile end amplifying parts (4) is larger than the square side length (d 2) of the reducing section, and the height of the pile end amplifying parts (4) is 600mm to 1000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321539135.6U CN220246894U (en) | 2023-06-15 | 2023-06-15 | Bamboo joint type prefabricated square pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321539135.6U CN220246894U (en) | 2023-06-15 | 2023-06-15 | Bamboo joint type prefabricated square pile |
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| Publication Number | Publication Date |
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| CN220246894U true CN220246894U (en) | 2023-12-26 |
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| CN202321539135.6U Active CN220246894U (en) | 2023-06-15 | 2023-06-15 | Bamboo joint type prefabricated square pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025146167A1 (en) * | 2024-01-05 | 2025-07-10 | 石家庄铁道大学 | Frost-heaving-resistant pile system and construction method |
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2023
- 2023-06-15 CN CN202321539135.6U patent/CN220246894U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025146167A1 (en) * | 2024-01-05 | 2025-07-10 | 石家庄铁道大学 | Frost-heaving-resistant pile system and construction method |
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