Anti-seepage bite pile and construction method

Abstract

The present invention discloses an anti-seepage interlocking pile, comprising a plurality of plain piles, wherein steel piles are arranged between adjacent plain piles, and adjacent plain piles and steel piles interlock to form an interlocking area; the interlocking area is cast by anti-seepage concrete; the plain piles excluding the interlocking area are ordinary concrete piles; and the steel piles excluding the interlocking area are reinforced concrete piles. The present invention also discloses a construction method for anti-seepage interlocking piles. In the present invention, the interlocking area is cast by anti-seepage concrete. First, the anti-seepage grade and strength grade of the interlocking area are improved, and the pile material performance of the interlocking part is enhanced; second, the casting of anti-seepage concrete in the interlocking area alleviates the defect of cracks easily appearing at the interface between the new and old concretes between the interlocking area and the plain piles; third, the two arc surfaces on both sides of the interlocking area that are connected to the corresponding plain piles and steel piles become interlocking surfaces, thereby increasing the interlocking area and making the interlocking tight.

Description

Technical Field

[0001] The invention belongs to the technical field of geotechnical engineering, and particularly relates to an anti-seepage bite pile and a construction method. Background Art

[0002] During underground construction, to ensure the safety of the structural engineering and the surrounding environment, foundation pit support must be relied upon to control soil deformation. Its primary function is to stabilize and ensure the stability of the pit bottom. The safety and reliability of deep foundation pit design is essential for ensuring the construction of underground projects, and the anti-seepage performance of deep foundation pit maintenance projects is a key factor affecting foundation pit safety. In deep foundation pit maintenance projects, cement mixing piles or high-pressure jet grouting piles are often used to form an anti-seepage water-stop curtain. However, in actual construction, water-stop curtains often leak, endangering the safety of the foundation pit.

[0003] In foundation pit projects, if an anti-seepage support system is formed by interlocking support piles, it can not only save the anti-seepage curtain of cement mixing piles or high-pressure rotary jet piles, saving the cost of foundation pit anti-seepage, but also complete the foundation pit anti-seepage project at the same time as the support piles are constructed, greatly shortening the construction period.

[0004] Regarding the bite design between supporting piles in the existing technology, full-casing drill rigs are usually used on the construction site to construct the bored pile body. Reinforced concrete piles (commonly known as meat piles) and concrete piles without steel bars (commonly known as plain piles) are arranged in a staggered manner in the form of "plain-meat-vegetarian-meat..." Each meat pile has an intersection with the plain piles on both sides, such as Figure 1 As shown, during construction, the plain piles on both sides of the meat piles are constructed first, and the meat pile holes are excavated before the plain pile concrete solidifies. At the same time, the part of the plain pile that intersects with the meat pile is cut off, and then the reinforced concrete piles are poured to form the meat piles, so that the meat piles and the plain piles are interlocked into a whole.

[0005] However, in this kind of bite structure, the intersection part of the bite is part of the meat pile, and the bite surface between adjacent meat piles and plain piles is only an arc surface structure at the junction of the meat piles and the plain piles. The bite area is small, and it is easy to have loose bites and cracks, and the construction quality of the bite part cannot be ensured; in addition, since the intersection part of the plain pile and the bite is made of ordinary concrete, there is a new and old concrete joint surface between the two. When the pile body is subjected to horizontal load, cracks and damage are more likely to occur at the bite part, which affects the entire maintenance project. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an anti-seepage bite pile.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] An anti-seepage occlusal pile comprises a plurality of plain piles, wherein adjacent plain piles are provided with meat piles, and the adjacent plain piles and meat piles are engaged with each other to form an occlusal area;

[0009] The bite area is cast by impermeable concrete;

[0010] The plain piles except the occlusal area are ordinary concrete piles;

[0011] The piles except the bite area are reinforced concrete piles;

[0012] The strength grade of the anti-permeability concrete used for casting the bite zone is greater than the strength grade of the ordinary concrete used for casting the plain piles; the anti-permeability grade of the anti-permeability concrete used for casting the bite zone is greater than the anti-permeability grade of the ordinary concrete used for casting the plain piles.

[0013] Preferably, a special-shaped steel cage is provided inside the pile, and the special-shaped steel cage is formed by symmetrical concavities on both sides of a circular steel cage;

[0014] The inner concave portion of the special-shaped steel cage is located outside the corresponding side bite area.

[0015] Preferably, the concrete pile excluding the bite zone is a common concrete pile structure reinforced with a special-shaped steel cage.

[0016] The invention also provides a construction method for the anti-seepage interlocking pile.

[0017] A construction method for an anti-seepage interlocking pile comprises the following steps:

[0018] Step 1: Prepare the concrete;

[0019] Prepare the anti-seepage concrete required for the occlusal area pouring and the ordinary concrete required for the plain pile and concrete pile pouring according to the design requirements;

[0020] Step 2: Make special-shaped steel cage;

[0021] According to the pile hole diameter and design requirements, all special-shaped steel cages are made;

[0022] Step 3: Make a curved baffle;

[0023] Two arc-shaped baffles are made according to the diameter of the pile and the size of the bite area required by the design;

[0024] The diameter of the radial inner end surface of the arc baffle is the same as the diameter of the pile; the arc length of the arc baffle is the same as the arc length l of the bite zone where the pile is located; the height of the arc baffle is greater than the height of the segmented single pouring of concrete in the bite zone and the pile;

[0025] Step 4: According to the design requirements of the arc surface position of the bite area and the corresponding meat pile bite, symmetrically tie the two arc-shaped baffles to the bottom of a special-shaped steel cage;

[0026] Step 5: Drill holes and cast piles;

[0027] Drilling is carried out at the located pile positions to form pile holes and then ordinary concrete is poured in sections to complete the construction of the pile body;

[0028] Step 6: Drill holes for the piles and place the special-shaped steel cage with curved baffles;

[0029] Drill the hole for the concrete pile between two piles that have been poured with concrete but have not yet fully set, and lower the special-shaped steel cage with an arc-shaped baffle so that the concave part of the special-shaped steel cage faces the concrete pile hole on the corresponding side;

[0030] The arc-shaped baffle is located at the arc surface position where the bite area required by the design and the corresponding meat pile bite;

[0031] Step 7: Alternately cast the bite area and the pile area where the special-shaped steel cage is located in sections along the pile bottom from bottom to top;

[0032] Step 8: Repeat steps 4 to 7 until the length of the occlusal pile is as required by the overall design.

[0033] Preferably, in step 3, the height of the arc-shaped baffle is 50 to 100 cm higher than the height of the segmented single pouring of the bite area and the concrete pile.

[0034] Preferably, in step 7, the method of alternately casting the engaging area and the pile area where the special-shaped steel cage is located in sections from bottom to top along the pile bottom includes the following steps:

[0035] Step 71: Use impermeable concrete to cast the bite area in a single pass;

[0036] Step 72: Use ordinary concrete to pour the pile area where the special-shaped steel cage is located in a single pass;

[0037] Step 73: Lift the curved baffle upwards;

[0038] Step 74: Repeat steps 71 to 73 until the meshing area and the pile area where the special-shaped steel cage is located are poured;

[0039] Step 75: After pouring, remove the curved baffle.

[0040] Preferably, in step 73, when the arc-shaped baffle is lifted, a length of 30 to 60 cm of the bottom of the arc-shaped baffle is retained in the concrete mixture.

[0041] The beneficial effects of the present invention are:

[0042] (1) In the present invention, the bite zone is cast with impermeable concrete, and the strength grade of the impermeable concrete used for casting the bite zone is greater than the strength grade of the ordinary concrete used for casting the plain piles. The impermeability grade of the impermeable concrete used for casting the bite zone is greater than the impermeability grade of the ordinary concrete used for casting the plain piles. First, the impermeability grade and strength grade of the bite zone are improved, and the pile material performance of the bite portion is enhanced; second, the casting of the impermeable concrete in the bite zone alleviates the defect that cracks are easily generated at the joint surface between the bite zone and the plain piles, and third, the two arc surfaces on both sides of the bite zone that are connected to the corresponding plain piles and meat piles become bite surfaces, thereby increasing the bite area and making the bite tight.

[0043] (2) In the present invention, when the bite area and the pile area where the special-shaped steel cage is located are cast in sections alternately, they are separated by arc-shaped baffles, which facilitates the construction of anti-seepage concrete casting.

[0044] (3) In the present invention, when the bite area and the pile area where the special-shaped steel cage is located are cast in sections, the arc-shaped baffle is pulled out in time to allow the concrete at the joints between the two to penetrate each other and solidify into one, thereby avoiding the formation of cold joints between the two and ensuring the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings in the specification, which constitute a part of this application, are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0046] Figure 1 It is a design diagram of the engagement between supporting piles in the prior art;

[0047] Figure 2 It is a schematic structural diagram of the anti-seepage occlusal pile of the present invention;

[0048] Figure 3 1 is a schematic top view of the structure of the arc-shaped baffle in the present invention;

[0049] Figure 4 This is a schematic front view of the structure of the arc baffle in the present invention;

[0050] Figure 5 Schematic diagram of the position of the arc-shaped baffle when the bite area and the pile area where the special-shaped steel cage is located are cast in sections and alternately in Example 2;

[0051] Figure 6 Schematic diagram of the structure of the anti-seepage occlusal pile in Example 3;

[0052] in:

[0053] 1-plain pile, 2-crusted pile, 3-bite area, 4-special-shaped steel cage, 5-arc baffle, 6-wire rope hole, 7-lifting wire rope, 8-temporary fixing hole;

[0054] 1a-the first plain pile, 1b-the second plain pile, 1c-the third plain pile, 2a-the first meat pile, 2b-the second meat pile. DETAILED DESCRIPTION

[0055] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0056] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0057] In the present invention, the directions or positional relationships indicated by terms such as "upper", "lower", "bottom", and "top" are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

[0058] In the present invention, terms such as "connected" and "connection" should be interpreted broadly to mean a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediary. Relevant researchers or technicians in this field may determine the specific meanings of these terms in the present invention based on specific circumstances, and they should not be construed as limitations on the present invention.

[0059] The present invention will be further described below with reference to the accompanying drawings and examples.

[0060] Example 1:

[0061] like Figure 2 As shown, an anti-seepage occlusal pile comprises a plurality of plain piles 1, wherein adjacent plain piles 1 are provided with meat piles 2, and adjacent plain piles 1 and meat piles 2 are occluded to form an occlusal area 3; wherein the occlusal area 3 is the intersection of the plain piles 1 and the meat piles 2;

[0062] The bite area 3 is cast by impermeable concrete;

[0063] The plain pile 1 except the bite area 3 is an ordinary concrete pile;

[0064] The pile 2 except the bite area 3 is a reinforced concrete pile;

[0065] The strength grade of the anti-permeability concrete used for casting the bite area 3 is greater than the strength grade of the ordinary concrete used for casting the plain pile 1; the anti-permeability grade of the anti-permeability concrete used for casting the bite area 3 is greater than the anti-permeability grade of the ordinary concrete used for casting the plain pile 1.

[0066] In the present application, the bite area 3 is cast with impermeable concrete. At the same time, the strength grade of the impermeable concrete used for casting the bite area 3 is greater than the strength grade of the ordinary concrete used for casting the plain pile 1. The impermeability grade of the impermeable concrete used for casting the bite area 3 is greater than the impermeability grade of the ordinary concrete used for casting the plain pile 1. First, the impermeability grade and strength grade of the bite area are improved, and the pile material performance of the bite part is enhanced; second, the casting of impermeable concrete in the bite area alleviates the defect of cracks that are easy to appear at the joint surface of the new and old concrete between the bite area and the plain pile; third, the two arc surfaces on both sides of the bite area 3 that are connected to the corresponding plain piles and meat piles become bite surfaces, thereby increasing the bite area and making the bite tight.

[0067] Specifically, the vertical center lines of all the plain piles 1 and meat piles 2 are located in the same plane, and the diameters of the plain piles 1 and meat piles 2 can be the same or different.

[0068] Preferably, a special-shaped steel cage 4 is provided inside the pile 2, and the special-shaped steel cage 4 is formed by symmetrical concave portions on both sides of a circular steel cage;

[0069] The inner concave portion of the special-shaped steel cage 4 is located outside the corresponding side bite area 3 .

[0070] Preferably, the concrete pile 2 excluding the bite area is a common concrete pile structure reinforced by a special-shaped steel cage 4 .

[0071] Example 2:

[0072] A construction method for the anti-seepage interlocking pile in embodiment 1 comprises the following steps:

[0073] Step 1: Prepare the concrete;

[0074] Prepare the anti-seepage concrete required for pouring the bite area 3 and the ordinary concrete required for pouring the plain pile 1 and the concrete pile 2 according to the design requirements;

[0075] Step 2: Make special-shaped steel cage;

[0076] According to the pile hole diameter and design requirements of the meat pile 2, all the special-shaped steel cages 4 are made;

[0077] Step 3: Make the curved baffle 5;

[0078] According to the diameter of the pile 1 and the size of the bite area 3 required by the design, two arc-shaped baffles 5 are made; Figure 3As shown, the diameter of the radial inner end surface of the arc baffle 5 is the same as the diameter of the pile 1, the arc length of the arc baffle is the same as the arc length l of the bite zone where the pile 1 is located, and there is no specific requirement for the thickness of the arc baffle 5, which can be sufficient to block the strength of the concrete mixture. The height of the arc baffle 5 is greater than the height of the segmented single pouring of concrete in the bite zone 3 and the pile 2;

[0079] Specifically, in step 3, the height of the arc-shaped baffle 5 is 50 to 100 cm higher than the height of the segmented single pouring of the concrete of the bite area 3 and the meat pile 2;

[0080] Step 4: According to the design requirements of the arc surface position of the bite area 3 and the corresponding meat pile 2, temporarily and symmetrically tie the two arc-shaped baffles 5 to the bottom of a special-shaped steel cage 4;

[0081] Step 5: Drilling and pouring the pile 1;

[0082] Drilling is carried out at the located pile positions to form pile holes and then pouring ordinary concrete in sections to complete the construction of the pile body. The first time, two piles need to be drilled and poured.

[0083] Step 6: Drill holes for the piles and place the special-shaped steel cage with curved baffles;

[0084] The pile hole is opened between two piles that have been poured with concrete but have not yet been fully set, and the special-shaped steel cage 4 with the arc-shaped baffle 5 is lowered so that the inner concave part of the special-shaped steel cage 4 faces the pile hole on the corresponding side;

[0085] The arc baffle 5 is located at the arc surface position where the bite area 3 and the corresponding meat pile 2 bite as required by the design; that is, when the meat pile is opened, a part of the raw pile will be cut off, and the arc baffle 5 and the remaining raw pile hole will form a complete raw pile hole;

[0086] Step 7: Alternately cast the bite zone 3 and the pile area where the special-shaped steel cage 4 is located in sections along the pile bottom from bottom to top;

[0087] Specifically, in step 7, the method of alternately casting the engaging area 3 and the pile area where the special-shaped steel cage 4 is located in sections from bottom to top along the pile bottom includes the following steps:

[0088] Step 71: Use impermeable concrete to cast the bite area 3 in a single pour; the height of the single pour cannot exceed the upper edge of the arc baffle 5;

[0089] Step 72: Use ordinary concrete to cast a single pour in the area of ​​the pile where the special-shaped steel cage 4 is located; wherein the height of the single pour cannot exceed the upper edge of the arc baffle 5;

[0090] Step 73: Lift the arc baffle 5; the position of the arc baffle 5 is as follows: Figure 5 As shown;

[0091] Step 74: Repeat steps 71 to 73 until the occlusal area 3 and the pile area where the special-shaped steel cage 4 is located are poured;

[0092] Step 75: After pouring is completed, the arc baffle 5 is removed;

[0093] Specifically, in step 73, when the arc-shaped baffle 5 is lifted, a length of 30 to 60 cm of the bottom of the arc-shaped baffle 5 is retained in the concrete mixture;

[0094] In this application, when the bite area 3 and the pile area where the special-shaped steel cage 4 are located are cast alternately in sections, the arc-shaped baffle 5 is used to separate them, which facilitates the construction of anti-seepage concrete pouring; when the sections are cast in sections, the arc-shaped baffle 5 is promptly extracted to allow the concrete at the joints of the two to penetrate each other and solidify into one, thereby avoiding the generation of cold joints between the two and ensuring the construction quality;

[0095] Step 8: Repeat steps 4 to 7 until the length of the occlusal pile is as required by the overall design.

[0096] Example 3:

[0097] by Figure 6 Taking three plain piles 1 and two meat piles 2 as an example, the construction method of the anti-seepage bite pile in Example 2 includes the following steps:

[0098] Step 1: Prepare the anti-seepage concrete required for pouring the bite area 3 and the ordinary concrete required for pouring the plain pile 1 and the concrete pile 2 according to the design requirements;

[0099] Step 2: According to the pile hole diameter and design requirements of the pile 2, two special-shaped steel cages 4 are made;

[0100] Step 3: Two arc-shaped baffles 5 are manufactured according to the diameter of the pile 1 and the size of the bite zone 3 required by the design. The diameter of the radial inner end surface of the arc-shaped baffle 5 is the same as the diameter of the pile 1. The arc length of the arc-shaped baffle 5 is the same as the arc length l of the bite zone where the pile is located. The height of the arc-shaped baffle 5 is 50 to 100 cm higher than the height of the segmented single pouring of concrete in the bite zone 3 and the pile 2.

[0101] like Figure 4 As shown, two wire rope holes 6 are opened on both sides of the upper part of the arc baffle 5 for connecting the lifting wire rope 7; three small holes are opened in the middle of the upper part and on both sides of the bottom of the arc baffle 5 as temporary fixing holes 8;

[0102] Step 4: According to the design requirements of the arc surface position of the bite area 3 and the corresponding meat pile 2, the two arc baffles 5 are passed through the three temporary fixing holes 8 and temporarily fixed to the bottom of the special-shaped steel cage 4 with fine binding wires;

[0103] Step 5: According to the design requirements, with the help of a full casing drilling rig, drilling is performed at the positions of the positioned raw piles on both sides of the first raw pile 2a to form the pile holes of the first raw pile 1a and the second raw pile 1b;

[0104] Using a concrete pouring pipe, ordinary concrete is used to pour the pile holes of the first pile 1a and the second pile 1b respectively. During construction, segmented pouring is adopted to complete the construction of the first pile 1a and the second pile 1b.

[0105] Step 6: According to the design requirements, the hole of the first pile 2a is drilled between the first pile 1a and the second pile 1b, which have been poured with concrete but have not yet been fully set;

[0106] After the pile hole of the first pile 2a is formed, the special-shaped steel cage 4 with the curved baffles 5 is hung and placed in a pre-designed position so that the vertical center lines of the curved surfaces of the left and right inner concave parts of the special-shaped steel cage 4 are in the same plane as the vertical center lines of the first pile 1a and the second pile 1b; the two curved baffles 5 divide the pile hole space of the first pile 2a into three parts, the middle part is the pile area where the special-shaped steel cage 4 is located, and the two sides are the bite areas 3;

[0107] Step 7: Alternately cast the bite zone 3 and the pile area where the special-shaped steel cage 4 is located in sections along the pile bottom from bottom to top;

[0108] First, the space between the arc-shaped baffles 5 on both sides and the first and second piles 1a and 1b (i.e., the bite area 3) is cast. The casting material is impermeable concrete. Under the extrusion of the concrete mixture, the arc-shaped baffles 5 are tightly pressed against the concave surface of the special-shaped steel cage 4. The single casting height cannot exceed the upper edge of the arc-shaped baffle 5. Then, the pit pile area where the special-shaped steel cage 4 is located is cast. Ordinary concrete is used as the casting material. The casting height of the ordinary concrete is substantially the same as the height of the impermeable concrete in the arc-shaped baffle 5. From then on, the first section of the pit pile area where the bite area 3 and the special-shaped steel cage 4 are located is cast.

[0109] After the first section is poured, the arc baffle 5 is lifted by lifting the wire rope 7, and the second section of the bite area 3 and the pile area where the special-shaped steel cage 4 is located is poured in sequence using the same pouring method as the first section; this is repeated until the entire bite area 3 and the pile area where the special-shaped steel cage 4 is located are poured, forming a Figure 6 The first meat pile 2a and the bite areas 3 on both sides thereof are shown;

[0110] When the arc baffle 5 is lifted for the first time, the pulling force needs to be increased in order to break the thin wire tied to the special-shaped steel cage 4;

[0111] In addition, when the arc baffle 5 is lifted as the concrete is poured in sections, it is necessary to ensure that the length of the bottom 30 to 60 cm of the arc baffle 5 remains in the concrete mixture until all the concrete is poured. The arc baffle 5 can be completely removed;

[0112] Step 8: Repeat steps 4 to 7 above, drill the pile hole of the third pile 1c and cast to form the third pile 1c, and perform the hole drilling operation of the second pile 2b between the third pile 1c and the second pile 1b to obtain the second pile 2b and the engaging areas 3 on both sides thereof.

[0113] In the actual construction site, the above steps can be followed to repeat the construction until the overall design length of the interlocking pile is required.

[0114] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not a limitation of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without any creative work are still within the scope of protection of the present invention.

Claims

1. A construction method for anti-seepage interlocking piles, characterized in that: The anti-seepage occlusal piles include a plurality of plain piles, and meat piles are arranged between adjacent plain piles, and are characterized in that the adjacent plain piles and meat piles are occluded to form an occlusal area; The bite area is cast by impermeable concrete; The plain piles except the occlusal area are ordinary concrete piles; The piles except the bite area are reinforced concrete piles; The strength grade of the anti-permeability concrete used in the casting of the bite zone is greater than the strength grade of the ordinary concrete used in the casting of the plain piles; the anti-permeability grade of the anti-permeability concrete used in the casting of the bite zone is greater than the anti-permeability grade of the ordinary concrete used in the casting of the plain piles; A special-shaped steel cage is arranged inside the pile, and the special-shaped steel cage is formed by symmetrical concave on both sides of a circular steel cage; The inner concave portion of the special-shaped steel cage is located outside the bite area on the corresponding side; The piles except the bite zone are ordinary concrete pile structures reinforced with special-shaped steel cages; The construction method comprises the following steps: Step 1: Prepare the concrete; Prepare the anti-seepage concrete required for the occlusal area pouring and the ordinary concrete required for the plain piles and concrete piles pouring according to the design requirements; Step 2: Make special-shaped steel cage; According to the pile hole diameter and design requirements, all special-shaped steel cages are made; Step 3: Make a curved baffle; Two arc-shaped baffles are made according to the diameter of the pile and the size of the bite area required by the design; The diameter of the radial inner end surface of the arc baffle is the same as the diameter of the pile; the arc length of the arc baffle is the same as the arc length of the bite zone where the pile is located; the height of the arc baffle is greater than the height of the segmented single pouring of concrete in the bite zone and the pile; Step 4: According to the design requirements of the arc surface position of the bite area and the corresponding meat pile bite, symmetrically tie the two arc baffles to the bottom of a special-shaped steel cage; use fine binding wire to temporarily fix the arc baffles to the bottom of the special-shaped steel cage; Step 5: Drill holes and cast piles; Drilling is carried out at the located pile positions to form pile holes and then ordinary concrete is poured in sections to complete the construction of the pile body; Step 6: Drill holes for the piles and place the special-shaped steel cage with curved baffles; Drill the hole for the concrete pile between two piles that have been poured with concrete but have not yet fully set, and lower the special-shaped steel cage with an arc-shaped baffle so that the concave part of the special-shaped steel cage faces the concrete pile hole on the corresponding side; The arc-shaped baffle is located at the arc surface position where the bite area required by the design and the corresponding meat pile bite; Step 7: Alternately cast the bite area and the pile area where the special-shaped steel cage is located in sections along the pile bottom from bottom to top; Step 8: Repeat steps 4 to 7 until the length of the occlusal pile is as required by the overall design.

2. The construction method of the anti-seepage occlusal pile according to claim 1, characterized in that: In step 3, the height of the arc-shaped baffle is 50 to 100 cm higher than the height of the segmented single pouring of the bite area and the concrete pile.

3. The construction method of the anti-seepage occlusal pile according to claim 1, characterized in that: In step 7, the method of alternately casting the engaging area and the pile area where the special-shaped steel cage is located in sections from bottom to top along the pile bottom includes the following steps: Step 71: Use impermeable concrete to cast the bite area in a single pass; Step 72: Use ordinary concrete to pour the pile area where the special-shaped steel cage is located in a single pass; Step 73: Lift the curved baffle upwards; when lifting the curved baffle upwards for the first time, the pulling force needs to be increased in order to break the thin binding wires tied to the special-shaped steel cage; Step 74: Repeat steps 71 to 73 until the meshing area and the pile area where the special-shaped steel cage is located are poured; Step 75: After pouring, remove the curved baffle.

4. The construction method of the anti-seepage interlocking pile according to claim 3, characterized in that: In step 73, when the arc-shaped baffle is lifted, a length of 30 to 60 cm of the bottom of the arc-shaped baffle is retained in the concrete mixture.

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