A foundation pile

Abstract

The utility model relates to road bridge construction technical field discloses a kind of foundation piles, it includes: foundation pile main body, support assembly and connecting piece;The foundation pile main body is vertically arranged, the foundation pile main body is used to insert into ground, the foundation pile main body is provided with multiple, all the foundation pile main body interval arrangement;The support assembly is arranged on the pile body of the foundation pile main body, and the support assembly is used to support ground;All connecting pieces are buried under ground, the connecting piece is provided with multiple, the connecting piece is equipped between adjacent foundation pile main body, and two adjacent foundation pile main bodies are connected by the connecting piece.

Description

Technical Field

[0001] This utility model relates to the field of road and bridge construction, and in particular to a foundation pile. Background Technology

[0002] In existing building pile foundation structures, independent piles are arranged at single points according to the load of the superstructure. Each pile must independently bear the local load, resulting in excessively large pile diameters and lengths, low material utilization, and in soft soil foundations, the soil around each pile is prone to shear failure due to stress concentration, causing pile tilting. A simple array arrangement, where piles are distributed in a grid at equal intervals, fails to consider the inter-pile interaction, resulting in a lack of effective connection between adjacent piles, relying only on indirect connection through the upper pile cap. In saturated soft clay foundations, this arrangement is prone to weakening of the pile group effect due to soil disturbance between piles. Utility Model Content

[0003] The technical problem to be solved by this utility model is to solve at least one of the technical problems mentioned above.

[0004] The solution to the technical problem of this utility model is: A type of foundation pile includes: a foundation pile body, a support assembly, and connectors; the foundation pile body is vertically arranged and inserted into the ground; multiple foundation pile bodies are provided, and all foundation pile bodies are arranged at intervals; the support assembly is provided on the pile body of the foundation pile body and is used to support the ground; all connectors are buried underground, and multiple connectors are provided, with each adjacent foundation pile body having a connector, and two adjacent foundation pile bodies are connected by the connectors.

[0005] As a further improvement to the above technical solution, the foundation pile also includes a first enlarged bottom, which is fixed to the lower end of the foundation pile body, and the width of the first enlarged bottom gradually increases downward from the foundation pile body.

[0006] As a further improvement to the above technical solution, the foundation pile also includes a second enlarged bottom, the width of which gradually increases from top to bottom. The second enlarged bottom is located at the lower end of the first enlarged bottom, and the width of the upper end of the second enlarged bottom is not less than the width of the lower end of the first enlarged bottom.

[0007] As a further improvement to the above technical solution, the support assembly includes: a first retaining ring, a second retaining ring, multiple support rods, multiple piston cylinders, multiple first connecting rods, and multiple second connecting rods; the first retaining ring is fixed to the pile body of the foundation pile body; the second retaining ring is fixed to the pile body of the foundation pile body, and the second retaining ring is located below the first retaining ring; the upper ends of all the support rods are respectively hinged to the first retaining rings, and the lower ends of the support rods are used to support the ground; the upper ends of the piston cylinders are connected to the support rods through a first connecting shaft, so that the upper ends of the piston cylinders and the support rods can rotate relative to each other; the lower ends of the first connecting rods are connected to the second retaining rings through a second connecting shaft, so that the lower ends of the first connecting rods and the second retaining rings can rotate relative to each other, and the upper ends of the first connecting rods are hinged to the lower ends of the piston cylinders; the lower ends of the second connecting rods are hinged to the middle of the support rods, and the upper ends of the second connecting rods are hinged to the middle of the first connecting rods; the multiple support rods, multiple piston cylinders, multiple first connecting rods, and multiple second connecting rods are arranged in a one-to-one correspondence.

[0008] As a further improvement to the above technical solution, the first retaining ring includes multiple first open rings, all of which surround the pile body of the foundation pile. Each first open ring has a first connecting plate extending radially from both ends along the pile body of the foundation pile, and the first connecting plates on two adjacent first open rings are fixedly connected by screws.

[0009] As a further improvement to the above technical solution, the second retaining ring includes multiple second open rings, all of which surround the pile body of the foundation pile. The two ends of each second open ring extend into a second connecting plate along the radial direction of the pile body, and the second connecting plates on two adjacent second open rings are fixedly connected by screws.

[0010] As a further improvement to the above technical solution, the second open ring is located directly below the first open ring, and the first open ring and the second open ring are arranged in a one-to-one correspondence. Each first open ring and its corresponding first open ring are fixedly connected by a connecting bracket.

[0011] As a further improvement to the above technical solution, all the foundation piles are arranged in a rectangular array with left-right and front-back intervals.

[0012] As a further improvement to the above technical solution, the connecting member includes front and rear beams and left and right beams. The front and rear beams and the left and right beams are used to be buried underground. A front and rear beam is set between two adjacent pile bodies arranged in front and rear, and a left and right beam is set between two adjacent pile bodies arranged in left and right. Two adjacent pile bodies in front and rear are fixedly connected by longitudinal beams, and two adjacent pile bodies in left and right are fixedly connected by left and right beams.

[0013] As a further improvement to the above technical solution, the connector also includes multiple fixing beams, which extend along the left rear direction, and each pair of adjacent foundation pile bodies along the left rear direction are fixedly connected by the fixing beams.

[0014] The beneficial effects of this utility model are as follows: It employs multiple pile bodies arranged at intervals, replacing traditional single-point independent piles, thus distributing the load of the superstructure across multiple pile bodies for shared support. Support components are installed on the pile bodies to enhance the contact area and interaction between the piles and the foundation soil. Through underground connectors installed between adjacent piles, the discrete pile bodies are rigidly connected into a unified structure. By sharing the load with multiple piles, the diameter and length of individual piles can be effectively reduced, decreasing the amount of concrete, steel reinforcement, and other materials used, thus lowering construction difficulty and cost. The support components, by expanding the contact area between the pile body and the soil, distribute concentrated loads over a wider area of ​​the foundation, reducing shear stress in the soil around the pile body and preventing pile tilting due to localized shear failure in soft soil. The underground connectors connect the discrete piles into a unified whole, forming a rigid grid structure that effectively transfers stress between piles, avoiding the weakening of the group pile effect caused by soil disturbance between piles in traditional array arrangements, which can lead to problems such as reduced bearing capacity and uneven settlement. Attached Figure Description

[0015] Figure 1 This is an isometric view of one embodiment of this utility model.

[0016] Figure 2 This is a front view of one embodiment of the present invention.

[0017] Figure 3 This is the utility model Figure 1 Enlarged view of point I in the image.

[0018] Figure 4 This is the utility model Figure 2 Enlarged view of section II in the image.

[0019] The reference numerals in the attached drawings are as follows: 1-Pile body, 11-First enlarged bottom, 12-Second enlarged bottom, 21-First retaining ring, 211-First open ring, 212-First connecting plate, 22-Second retaining ring, 221-Second open ring, 222-Second connecting plate, 23-Support rod, 24-Piston cylinder, 25-First connecting rod, 26-Second connecting rod, 31-Front and rear beams, 32-Left and right beams, 33-Fixed beam, 4-Connecting frame. Detailed Implementation

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments have been briefly explained above. Obviously, the described drawings are only a part of the embodiments of this utility model, not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0021] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0022] Reference Figure 1 and Figure 4 A type of foundation pile includes: a foundation pile body 1, a support assembly, and connectors; the foundation pile body 1 is vertically arranged and is used to be inserted into the ground; multiple foundation pile bodies 1 are provided, and all foundation pile bodies 1 are arranged at intervals; the support assembly is provided on the pile body of the foundation pile body 1 and is used to support the ground; all connectors are buried underground, and multiple connectors are provided, with each adjacent foundation pile body 1 having a connector, and two adjacent foundation pile bodies 1 are connected by the connectors.

[0023] As described above, by using multiple pile bodies 1 arranged at intervals instead of traditional single-point independent piles, the load of the superstructure is distributed among multiple pile bodies for joint bearing. Support components are installed on the pile bodies 1 to enhance the contact area and interaction between the piles and the foundation soil. Through connectors buried underground and installed between adjacent piles, the discrete pile bodies 1 are rigidly connected into a unified structure. With multiple piles sharing the load, the diameter and length of individual piles can be effectively reduced, decreasing the amount of concrete, steel reinforcement, and other materials used, thus lowering construction difficulty and cost. The support components, by increasing the contact area between the pile body 1 and the soil, distribute concentrated loads over a larger area of ​​the foundation, reducing the shear stress in the soil around the pile body 1 and preventing pile tilting due to localized shear failure in soft soil. The underground connectors connect the discrete piles into a unified whole, forming a rigid grid structure that effectively transfers stress between piles, avoiding the weakening of the group pile effect caused by soil disturbance between piles in traditional array arrangements, which can lead to problems such as reduced bearing capacity and uneven settlement.

[0024] In one embodiment, the pile further includes a first enlarged base 11, which is fixed to the lower end of the pile body 1. The width of the first enlarged base 11 gradually increases downward from the pile body 1. The first enlarged base 11, fixed to the lower end of the pile body 1, gradually increases in width from top to bottom, for example, in the shape of an inverted cone or inverted frustum, narrower at the top and wider at the bottom, increasing the contact area between the pile tip and the foundation soil. The downward-enlarging shape of the enlarged base creates an upward supporting reaction force from the soil below the pile tip, and a radial compressive friction force from the soil on the side of the pile tip.

[0025] In one embodiment, the foundation pile further includes a second enlarged base 12, the width of which gradually increases from top to bottom. The second enlarged base 12 is located below the first enlarged base 11, and the width of the upper end of the second enlarged base 12 is not less than the width of the lower end of the first enlarged base 11. The second enlarged base 12 is located directly below the first enlarged base 11 and its width gradually increases from top to bottom, forming a multi-level stepped enlarged base structure. After the second enlarged base 12 is embedded in the deep soil, the large-area contact between its lower surface and the deep soil can disperse the pile end pressure and avoid compression deformation of a single soil layer; the squeezing friction between the side and the deep soil forms a deep anchoring effect, resisting vertical settlement and horizontal displacement of the pile.

[0026] In one embodiment, the support assembly includes: a first retaining ring 21, a second retaining ring 22, a plurality of support rods 23, a plurality of piston cylinders 24, a plurality of first connecting rods 25, and a plurality of second connecting rods 26; the first retaining ring 21 is fixed to the pile body of the foundation pile body 1; the second retaining ring 22 is fixed to the pile body of the foundation pile body 1, and the second retaining ring 22 is located below the first retaining ring 21; the upper ends of all the support rods 23 are respectively hinged to the first retaining rings 21, and the lower ends of the support rods 23 are used to support the ground; the upper ends of the piston cylinders 24 are connected to the support rods 23 through a first connecting shaft. The piston cylinder 24 and the support rod 23 are connected so that the upper end of the piston cylinder 24 and the support rod 23 can rotate relative to each other; the lower end of the first connecting rod 25 is connected to the second retaining ring 22 through the second connecting shaft, so that the lower end of the first connecting rod 25 and the second retaining ring 22 can rotate relative to each other, and the upper end of the first connecting rod 25 is hinged to the lower end of the piston cylinder 24; the lower end of the second connecting rod 26 is hinged to the middle part of the support rod 23, and the upper end of the second connecting rod 26 is hinged to the middle part of the first connecting rod 25; multiple support rods 23, multiple piston cylinders 24, multiple first connecting rods 25 and multiple second connecting rods 26 are arranged in a one-to-one correspondence.

[0027] Both the first retaining ring 21 and the second retaining ring 22 are fixed to the pile body 1, forming the upper and lower fixed fulcrums of the support assembly. The upper end of the support rod 23 is hinged to the first retaining ring 21, allowing the support rod 23 to rotate around this fulcrum. The lower end of the first connecting rod 25 is hinged to the second retaining ring 22 via the second connecting shaft, providing lower fixed support for the entire linkage system. Multiple independent support units are arranged at intervals along the circumference of the pile body 1, for example, 3 to 4 groups. Each group contains 1 support rod 23, 1 piston cylinder 24, 1 first connecting rod 25, and 1 second connecting rod 26. In each support unit, the piston cylinder 24, the first connecting rod 25, the second connecting rod 26, and the support rod 23 form a closed-loop four-bar linkage mechanism. The angle of the support rod 23 is independently controlled by the extension and retraction of the piston cylinder 24.

[0028] In one embodiment, the first retaining ring 21 includes a plurality of first open rings 211, all of which surround the pile body 1. Each first open ring 211 has a first connecting plate 212 extending radially from both ends of the pile body. The first connecting plates 212 on two adjacent first open rings 211 are fixedly connected by screws.

[0029] The first retaining ring 21 includes multiple first open rings 211, for example, 2 to 8, arranged in an arc shape. The inner side of each first open ring 211 fits against the pile body 1, together surrounding the pile body to form a complete ring structure. Each first open ring 211 has a first connecting plate 212 extending radially from both ends along the pile body. The first connecting plate 212 is flat and perpendicular to the arc surface of the first open ring 211. The connecting plates of adjacent first open rings 211 are fixedly connected by screws, so that the dispersed first open rings 211 are spliced ​​into a whole first retaining ring 21. During splicing, a small gap is left between the inner side of each first open ring 211 and the surface of the pile body 1. By tightening the screws of adjacent first connecting plates 212, the first open rings 211 are forced to radially contract towards the pile body 1. The friction between the inner surface of the first open ring 211 and the pile body, as well as the tension of the connecting plates, achieve a rigid clamping of the pile body. The detachable nature of the screw connection allows the first retaining ring 21 to be disassembled as needed, such as for support component replacement or pile inspection, avoiding the maintenance difficulties caused by the one-time fixation of traditional welded retaining rings.

[0030] In one embodiment, the second retaining ring 22 includes a plurality of second open rings 221, all of which surround the pile body 1. Each second open ring 221 has a second connecting plate 222 extending radially from both ends of the pile body. The second connecting plates 222 on two adjacent second open rings 221 are fixedly connected by screws.

[0031] The second retaining ring 22 includes multiple second open rings 221, for example, 2 to 8, arranged in an arc shape. The inner side of each second open ring 221 fits against the pile body 1, together surrounding the pile body to form a complete ring structure. Each second open ring 221 has two ends extending radially along the pile body to form a second connecting plate 222. The second connecting plate 222 is flat and perpendicular to the arc surface of the second open ring 221. The connecting plates of adjacent second open rings 221 are fixedly connected by screws, so that the dispersed second open rings 221 are spliced ​​into a whole second retaining ring 22. During splicing, a small gap is left between the inner side of each second open ring 221 and the surface of the pile body 1. By tightening the screws of adjacent second connecting plates 222, the second open rings 221 are forced to radially contract towards the pile body 1. The friction between the inner surface of the second open ring 221 and the pile body, as well as the tension of the connecting plate, achieve a rigid clamping of the pile body. The detachable nature of the screw connection allows the second retaining ring 22 to be disassembled as needed, such as for support component replacement or pile inspection, avoiding the maintenance difficulties caused by the one-time fixation of traditional welded retaining rings.

[0032] In one embodiment, the second open ring 221 is located directly below the first open ring 211, with each open ring 211 and the second open ring 221 corresponding to one another. Each first open ring 211 is fixedly connected to its corresponding first open ring 211 via a connecting frame 4. Each first open ring 211 is fixedly connected to the second open ring 221 directly below it via the connecting frame 4 (e.g., a rigid bracket made of welded steel or bolted). The two ends of the connecting frame 4 are welded or bolted to the first open ring 211 and the second open ring 221, respectively, so that the upper and lower first open rings 211 and second open rings 221 form a rigid whole.

[0033] In one embodiment, all the foundation pile bodies 1 are arranged in a rectangular array with left-right and front-back intervals. This structure is simple and easy to install.

[0034] In one embodiment, the connector includes front and rear beams 31 and left and right beams 32. The front and rear beams 31 and the left and right beams 32 are used to be buried underground. A front and rear beam 31 is respectively provided between two adjacent pile bodies 1 arranged in a front-to-back manner, and a left and right beam 32 is respectively provided between two adjacent pile bodies 1 arranged in a left-to-right manner. Two adjacent pile bodies 1 in a front-to-back manner are fixedly connected by longitudinal beams, and two adjacent pile bodies 1 in a left-to-right manner are fixedly connected by left and right beams 32.

[0035] Front and rear beams 31 are embedded underground along the front-rear direction, connecting adjacent pile bodies 1 arranged along the front-rear direction. One front and rear beam 31 is installed between each pair of adjacent front and rear piles. Left and right beams 32 are embedded underground along the left-right direction, connecting adjacent pile bodies 1 arranged along the left-right direction. One left and right beam 32 is installed between each pair of adjacent left and right piles. Both front and rear beams 31 and left and right beams 32 are fixed to the pile bodies 1 through rigid joints (such as cast-in-place reinforced concrete connections, welded embedded parts, or bolt anchoring). The beam reinforcement of front and rear beams 31 and left and right beams 32 is anchored to the reserved reinforcement of the pile body 1, or rigidly connected to the beams of front and rear beams 31 and left and right beams 32 through embedded parts on the pile side, ensuring a rigid connection between front and rear beams 31 and left and right beams 32 and the pile body 1. Front and rear beams 31 and left and right beams 32 can transfer the load of a single pile body 1 to the adjacent pile body 1 laterally through rigid joints, realizing the collaborative load sharing of the pile group. The left and right beams 32 and the front and rear beams 31, which are buried underground, are in close contact with the surrounding soil. The left and right beams 32 and the front and rear beams 31 can bear part of the shallow soil load through the soil arch effect and transfer it to the pile. This forms a layered bearing mode in which the main body of the pile 1 bears the deep load and the beams such as the left and right beams 32 and the front and rear beams 31 bear the shallow load, thus avoiding excessive concentration of load on the main body of the pile 1.

[0036] In one embodiment, the connector further includes multiple fixed beams 33 extending along the left-rear direction, with each pair of adjacent pile bodies 1 along the left-rear direction being fixedly connected by the fixed beams 33. The fixed beams 33 connect adjacent pile bodies 1 along the left-rear direction, supplementing the stiffness deficiency of the orthogonal grid of the original pile bodies 1 arranged in a rectangular array using front and rear beams 31 and left and right beams 32 through an oblique triangular stabilizing system.

[0037] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A pile, characterized in that include: The foundation pile body (1) is vertically arranged and is used to be inserted into the ground. Multiple foundation pile bodies (1) are provided, and all the foundation pile bodies (1) are arranged at intervals. A support assembly is provided on the pile body of the foundation pile body (1) and is used to support the ground. Connectors are provided in multiple ways. All connectors are buried underground. Each adjacent pile body (1) is provided with a connector, and two adjacent pile bodies (1) are connected by the connectors.

2. The foundation pile according to claim 1, characterized in that, The foundation pile also includes a first enlarged bottom (11), which is fixed at the lower end of the foundation pile body (1), and the width of the first enlarged bottom (11) gradually increases downward from the foundation pile body (1).

3. A pile according to claim 2, wherein The foundation pile also includes a second enlarged bottom (12), the width of which gradually increases from top to bottom. The second enlarged bottom (12) is located at the lower end of the first enlarged bottom (11), and the width of the upper end of the second enlarged bottom (12) is not less than the width of the lower end of the first enlarged bottom (11).

4. The pile of claim 1, wherein The support assembly includes a first retaining ring (21), a second retaining ring (22), multiple support rods (23), multiple piston cylinders (24), multiple first connecting rods (25), and multiple second connecting rods (26); the first retaining ring (21) is fixed to the pile body of the foundation pile body (1); the second retaining ring (22) is fixed to the pile body of the foundation pile body (1), and the second retaining ring (22) is located below the first retaining ring (21); the upper ends of all the support rods (23) are respectively hinged to the first retaining rings (21), and the lower ends of the support rods (23) are used to support the ground; the upper ends of the piston cylinders (24) are connected to the support rods (23) through a first connecting shaft, so that... The upper end of the piston cylinder (24) and the support rod (23) are rotatable relative to each other; the lower end of the first connecting rod (25) is connected to the second retaining ring (22) through the second connecting shaft, so that the lower end of the first connecting rod (25) and the second retaining ring (22) are rotatable relative to each other, and the upper end of the first connecting rod (25) and the lower end of the piston cylinder (24) are hinged; the lower end of the second connecting rod (26) and the middle part of the support rod (23) are hinged, and the upper end of the second connecting rod (26) and the middle part of the first connecting rod (25) are hinged; multiple support rods (23), multiple piston cylinders (24), multiple first connecting rods (25) and multiple second connecting rods (26) are arranged in a one-to-one correspondence.

5. A pile according to claim 4, wherein The first retaining ring (21) includes a plurality of first open rings (211), all of which surround the pile body of the foundation pile (1). Each first open ring (211) has a first connecting plate (212) extending radially from both ends of the pile body of the foundation pile. The first connecting plates (212) on two adjacent first open rings (211) are fixedly connected by screws.

6. A pile according to claim 5, characterised in that The second retaining ring (22) includes a plurality of second open rings (221), all of which surround the pile body of the foundation pile (1). The two ends of each second open ring (221) extend a second connecting plate (222) along the radial direction of the pile body of the foundation pile. The second connecting plates (222) on two adjacent second open rings (221) are fixedly connected by screws.

7. A pile according to claim 6, characterised in that The second open ring (221) is located directly below the first open ring (211). The first open ring (211) and the second open ring (221) are arranged in a one-to-one correspondence. Each first open ring (211) and its corresponding first open ring (211) are fixedly connected by a connecting bracket (4).

8. The pile of claim 1, wherein All the foundation pile bodies (1) are arranged in a rectangular array with left-right and front-back intervals.

9. A pile according to claim 8, characterised in that The connector includes front and rear beams (31) and left and right beams (32). The front and rear beams (31) and the left and right beams (32) are used to be buried underground. A front and rear beam (31) is set between two adjacent pile bodies (1) arranged in front and rear, and a left and right beam (32) is set between two adjacent pile bodies (1) arranged in left and right. Two adjacent pile bodies (1) are fixedly connected by longitudinal beams, and two adjacent pile bodies (1) are fixedly connected by left and right beams (32).

10. A pile according to claim 9, characterised in that The connector also includes multiple fixed beams (33) that extend along the left rear direction, and each pair of adjacent pile bodies (1) along the left rear direction are fixedly connected by the fixed beams (33).

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