Octagonal winged tenon hollow pile

Abstract

The utility model provides a kind of octagonal wing edge type mortise and tenon hollow pile, it is related to riverway support pile technical field, including pile body;The cross section of pile body is octagonal hollow tubular;Pile body right side surface is provided with pile body tenon;Pile body left side surface is provided with pile body mortise;Pile body tenon shape is adapted with pile body mortise;The right side surface of pile body is connected with the front side surface of pile body by inclined surface;The left side surface of pile body is connected with the front side surface of pile body by inclined surface;Pile body front side surface is water-facing surface;Several plant holes are set on the front side surface of pile body;Plant hole is connected with the pipe of the hollow pipe of pile body inside.The octagonal wing edge type mortise and tenon hollow pile provided by the utility model solves the problem that, in the prior art, the bottom soil of pile body water-facing surface is easily eroded to weaken the stability of the foundation at the bottom of pile body, and the stability of the fixed bottom of pile body can be improved.

Description

Technical Field

[0001] This utility model relates to the field of river support pile technology, specifically to octagonal wing-type tenon-and-mortise hollow piles. Background Technology

[0002] Precast concrete piles are commonly used foundation components in civil engineering. They are widely used in water conservancy projects such as riverbank protection, transportation projects such as high-speed railway subgrades, municipal engineering projects such as underground pipe gallery support, and marine engineering projects such as offshore platform uplift resistance. Their core function is to transfer the load of the superstructure to the deep stable soil layer through the pile body, while providing sufficient lateral bearing capacity and uplift resistance to resist external forces such as soil lateral displacement and water erosion, and to ensure the long-term stability of the engineering structure.

[0003] However, traditional circular precast concrete piles have low lateral stiffness and are difficult to control the gaps between piles, making them unsuitable for soft soil foundations or high lateral load scenarios. Although traditional square piles have slightly improved lateral bearing capacity, stress concentration is prone to occur at the corners of the cross-section, making them prone to cracking under earthquakes or impact loads. Most precast piles use bolted, welded, or grouted connections, which require on-site alignment, tightening, or curing, making the process cumbersome, inefficient, and prone to problems such as poor sealing and reduced bearing capacity at the connection points due to construction errors. Traditional solid piles have low material utilization and are heavy, resulting in high transportation energy consumption, high requirements for hoisting equipment, and high overall costs.

[0004] In the prior art, such as the prestressed high-strength concrete hollow support pile disclosed in Chinese patent application number 201620067223.4, a cylindrical hollow pile structure is disclosed. The strength of the pile is enhanced by prestressed steel bars, and the hollow design reduces the self-weight and saves materials. To a certain extent, it solves the problems of low material utilization and high transportation cost of traditional solid piles, while improving the compressive strength of the pile. Moreover, it connects adjacent piles through the cooperation of pile body tenon 10 and pile body mortise 11, which has better gap control and higher construction efficiency compared with the traditional connection method.

[0005] However, for precast piles used in water conservancy projects such as riverbank protection, the soil on the water-facing side is directly exposed to the impact of water flow, making it prone to erosion and thus weakening the stability of the foundation at the bottom of the pile. Utility Model Content

[0006] To address the aforementioned technical problems, the octagonal wing-shaped tenon-and-mortise hollow pile provided by this utility model can improve the stability of the pile bottom fixation.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The octagonal wing-shaped mortise and tenon hollow pile provided by this utility model includes a pile body; the cross-section of the pile body is an octagonal hollow tube; a pile body tenon is provided on the right side of the pile body; a pile body mortise is provided on the left side of the pile body; the shape of the pile body tenon is adapted to the pile body mortise; the right side of the pile body is connected to the front side of the pile body through an inclined surface; the left side of the pile body is connected to the front side of the pile body through an inclined surface; the front side of the pile body is the water-facing side; a plurality of plant holes are opened on the front side of the pile body; the plant holes communicate with the interior of the hollow tube of the pile body.

[0008] The octagonal wing-type mortise and tenon hollow pile provided by this utility model preferably includes a first wing at the pile body tenon; the cross-section of the first wing is an isosceles trapezoid; the lower base of the isosceles trapezoid of the first wing is fixed against the right side of the pile body; the upper base of the isosceles trapezoid of the first wing is provided with a triangular flange protruding to the right; the mortise of the pile body includes a second wing; the cross-section of the second wing is an isosceles trapezoid; the cross-sectional shape of the second wing is the same as that of the first wing; the lower base of the second wing is fixed against the left side of the pile body; the upper base of the second wing is provided with a recessed triangular groove; the shape of the triangular flange matches the triangular groove.

[0009] The octagonal wing-type tenon-and-mortise hollow pile provided by this utility model preferably has an obtuse triangle cross-section; the long side of the obtuse triangle of the triangular flange faces the right side of the pile body; and the second long side of the obtuse triangle of the triangular flange faces the front side of the pile body.

[0010] The octagonal wing-type tenon-and-mortise hollow pile provided by this utility model preferably has a cylindrical cavity inside the octagonal hollow tubular tube of the pile body.

[0011] The octagonal wing-type tenon-and-mortise hollow pile provided by this utility model preferably has spiral hoops on the inner side of the hollow tube wall of the pile body.

[0012] The above technical solution has the following advantages or beneficial effects: This utility model provides an octagonal wing-type tenon-and-mortise hollow pile, relating to the field of river channel support pile technology, including a pile body; the cross-section of the pile body is an octagonal hollow tube; a pile body tenon is provided on the right side of the pile body; a pile body mortise is provided on the left side of the pile body; the shape of the pile body tenon is adapted to the pile body mortise; the right side of the pile body is connected to the front side of the pile body through an inclined surface; the left side of the pile body is connected to the front side of the pile body through an inclined surface; the front side of the pile body is the water-facing side; several planting holes are opened on the front side of the pile body; the planting holes communicate with the interior of the hollow tube of the pile body. The octagonal wing-type tenon-and-mortise hollow pile provided by this utility model solves the problem in the prior art that the soil at the bottom of the water-facing side of the pile body is easily eroded, weakening the stability of the foundation at the bottom of the pile body, and can improve the stability of the pile body at the bottom. Attached Figure Description

[0013] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.

[0014] Figure 1 This is a schematic diagram of the overall structure of the octagonal wing-type tenon-and-mortise hollow pile provided in Embodiment 1 of this utility model.

[0015] Figure 2 This is a schematic cross-sectional view of the octagonal wing-type tenon-and-mortise hollow pile provided in Embodiment 1 of this utility model.

[0016] Figure 3 This is a schematic diagram of the spiral stirrup position of the octagonal wing-type tenon-and-mortise hollow pile provided in Embodiment 1 of this utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the octagonal wing-type tenon-and-mortise hollow piles provided in Embodiment 1 of this utility model when they are connected to each other. Detailed Implementation

[0018] Example 1: The octagonal wing-type tenon-and-mortise hollow pile provided in Embodiment 1 of this utility model, such as Figures 1 to 4As shown, it includes a pile body 1; the cross-section of the pile body 1 is an octagonal hollow tube; the inside of the octagonal hollow tube of the pile body 1 is a cylindrical cavity; a pile body tenon 11 is provided on the right side of the pile body 1; a pile body mortise 12 is provided on the left side of the pile body 1; the shape of the pile body tenon 11 is adapted to the pile body mortise 12; the right side of the pile body 1 is connected to the front side of the pile body 1 through an inclined surface 13; the left side of the pile body 1 is connected to the front side of the pile body 1 through an inclined surface 13; the front side of the pile body 1 is the water-facing side; several plant holes 2 are opened on the front side of the pile body 1; the plant holes 2 are connected to the inside of the hollow tube of the pile body.

[0019] The octagonal wing-type tenon-and-mortise hollow pile provided in Embodiment 1 of this utility model is inserted into the river channel with the front water-facing side of the pile body 1 facing the river. Compared with traditional circular piles, the octagonal cross-section of the pile body 1 in this embodiment increases the contact area between the pile body and the soil through the multi-faceted design, thereby improving the lateral friction resistance and better adapting to the soft soil foundation of the river channel. The hollow structure of the pile body 1 reduces its own weight while distributing the load evenly through the pipe wall, avoiding the problems of material waste and high transportation and hoisting costs of traditional solid piles. The right side and front side, and the left side and front side of the pile body are inclined. The surface connection avoids the stress concentration problem of traditional right-angle or acute-angle connections; the matching design of the pile tenon 11 and the pile mortise 12 realizes the mechanical locking connection of adjacent piles without the need for bolts, welding or grouting; and the interlocking of the tenon and mortise ensures that the piles share the load, avoiding the attenuation of bearing capacity due to the connection gap, thus improving the stability of the overall structure; after the pile tenon 11 and the pile mortise 12 cooperate with each other, the gap between adjacent piles 1 can be reduced through the labyrinth seal, thereby reducing the amount of water passing through the gap between the piles 1, thus reducing the water erosion of the backfill soil behind the pile 1 and affecting the stability of the pile 1. The plant hole 2 on the water-facing side connects to the hollow tube, where water-tolerant plants can be planted. In this embodiment, wetland rose is preferred. The roots of the wetland rose can extend to the soil around the pile through the plant hole 2, and the roots of the wetland rose can be used to stabilize the soil around the pile, thereby reducing the erosion of the soil on the water-facing side by water flow and indirectly improving the stability of the foundation at the bottom of the pile body 1. The leaves of the wetland rose can buffer the impact of water flow, reduce the direct effect of water pressure on the pile body 1, and reduce the impact damage to the tenon and mortise joints. At the same time, the growth of wetland rose can also beautify the engineering environment.

[0020] The octagonal wing-type tenon-and-mortise hollow pile provided by this utility model solves the problem in the prior art that the soil at the bottom of the pile on the water-facing side is easily eroded, which weakens the stability of the foundation at the bottom of the pile, and can improve the stability of the pile bottom fixation.

[0021] As a preferred embodiment, in this embodiment, the pile tenon 11 includes a first wing 111; the cross-section of the first wing 111 is an isosceles trapezoid; the lower base of the isosceles trapezoid of the first wing 111 is fixed against the right side of the pile body; the upper base of the isosceles trapezoid of the first wing 111 is provided with a right-protruding triangular flange 112; the pile mortise 12 includes a second wing 121; the cross-section of the second wing 121 is an isosceles trapezoid; the cross-sectional shape of the second wing 121 is the same as the cross-sectional shape of the first wing 111; the lower base of the second wing 121 is fixed against the left side of the pile body 1; the upper base of the second wing 121 is provided with a recessed triangular groove 122; the shape of the triangular flange 112 matches the triangular groove 122. Both the first wing 111 and the second wing 121 adopt an isosceles trapezoidal cross section, and the lower base is fixed against the side of the pile body. The symmetrical structure of the isosceles trapezoid makes the connection surface between the first wing 111, the second wing 121 and the pile body 1 have a gradient transition. Compared with the rectangular wing with the smaller base of the trapezoid as the side length, it significantly reduces the stress concentration at the root of the wing and avoids the wing from breaking under the action of soil pressure and water flow impact. The triangular flange 112 on the upper base of the first wing 111 matches the triangular groove 122 on the upper base of the second wing 121. The self-guiding characteristic of the triangle allows adjacent piles to be quickly aligned by the inclined surface when splicing, which is convenient for on-site installation.

[0022] As a preferred embodiment, in this case, the cross-section of the triangular flange 112 is an obtuse triangle; the longer side of the obtuse triangle of the triangular flange 112 faces the right side of the pile body 1; the second longer side of the obtuse triangle of the triangular flange 112 faces the front side of the pile body 1. The obtuse triangle of the triangular flange 112, compared to a right-angled or acute-angled triangle, has a lower stress concentration coefficient at its vertex, thus providing greater stability. The lateral shear force generated by the water flow along the water-facing surface can be transmitted through the second longer side of the triangular flange 112 to the corresponding inclined surface of the triangular groove 122. Then, the friction from the inclined surface of the second longer side, along with the mechanical interlocking of the triangular flange 112 and the triangular groove 122, provides a dual effect to resist shear deformation. The mortise and tenon structure of this application, through its obtuse angle transition and the absence of sharp protrusions on the flange, provides a larger contact area and more dispersed stress during transportation and stacking compared to the right-angled or acute-angled structures of traditional mortise and tenon joints, thus reducing the rate of damage from impacts. The tenon and mortise joints in this application adopt a symmetrical obtuse-angled triangular structure, which makes the center of gravity of the pile body closer to the axis during production. Combined with the overall octagonal cylindrical cavity design of the pile body, it can reduce eccentric vibration when the centrifuge rotates at high speed, thereby improving molding accuracy and production efficiency.

[0023] In this embodiment, the hollow tube wall of the pile body 1 is provided with a spiral stirrup 3. The spiral stirrup 3 is continuously wound around the circumference of the tube wall, which can effectively resist the shear deformation of the tube wall under the impact force of water flow.

[0024] In this embodiment, the preferred octagonal cross-section of the pile body 1 has a side length of 100mm to 150mm; the span (from the right end of the pile body tenon 11 to the left end of the pile body mortise 12) is 300mm to 350mm; the protruding part of the triangular flange 112 is 15mm; the diameter of the plant holes is 3mm, and they are distributed within a 1.5-meter range downward from the top of the pile body 1, with a vertical spacing of 40mm between the plant holes.

[0025] In summary, this utility model provides an octagonal wing-type tenon-and-mortise hollow pile, relating to the field of river channel support pile technology, including a pile body; the cross-section of the pile body is an octagonal hollow tube; a pile body tenon is provided on the right side of the pile body; a pile body mortise is provided on the left side of the pile body; the shape of the pile body tenon is adapted to the pile body mortise; the right side of the pile body is connected to the front side of the pile body through an inclined surface; the left side of the pile body is connected to the front side of the pile body through an inclined surface; the front side of the pile body is the water-facing side; several planting holes are opened on the front side of the pile body; the planting holes communicate with the interior of the hollow tube of the pile body. The octagonal wing-type tenon-and-mortise hollow pile provided by this utility model solves the problem in the prior art that the soil at the bottom of the water-facing side of the pile body is easily eroded, weakening the stability of the foundation at the bottom of the pile body, and can improve the stability of the pile body at the bottom.

[0026] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. An octagonal wing-type tenon-and-mortise hollow pile, characterized in that, Including the pile body; The cross-section of the pile body is an octagonal hollow tube; a pile body tenon is provided on the right side of the pile body; a pile body mortise is provided on the left side of the pile body; the shape of the pile body tenon is adapted to the pile body mortise. The right side of the pile body is connected to the front side of the pile body via an inclined surface; the left side of the pile body is connected to the front side of the pile body via an inclined surface. The front side of the pile body is the water-facing side; several plant holes are opened on the front side of the pile body; the plant holes are connected to the interior of the hollow tube in the pile body.

2. The octagonal wing-type tenon-and-mortise hollow pile as described in claim 1, characterized in that, The pile tenon includes a first wing; the cross-section of the first wing is an isosceles trapezoid; the lower base of the isosceles trapezoid of the first wing is fixed against the right side of the pile body; The upper base of the isosceles trapezoid of the first wing is provided with a triangular flange protruding to the right; The mortise groove of the pile body includes a second wing; the cross-section of the second wing is an isosceles trapezoid; the cross-sectional shape of the second wing is the same as the cross-sectional shape of the first wing; The lower bottom of the second wing is fixed against the left side of the pile body; the upper bottom of the second wing has a recessed triangular groove. The shape of the triangular flange matches the shape of the triangular groove.

3. The octagonal wing-type tenon-and-mortise hollow pile as described in claim 2, characterized in that, The cross-section of the triangular flange is an obtuse triangle; the longer side of the obtuse triangle of the triangular flange faces the right side of the pile body; the second longer side of the obtuse triangle of the triangular flange faces the front side of the pile body.

4. The octagonal wing-type tenon-and-mortise hollow pile as described in claim 1, characterized in that, The octagonal hollow tube of the pile body has a cylindrical cavity inside.

5. The octagonal wing-type tenon-and-mortise hollow pile as described in claim 1, characterized in that, The hollow tube wall of the pile body is provided with spiral stirrups on the inner side.

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