ECC (Engineered Cementitious Composite) impact-resistant tubular pile

Abstract

The utility model relates to the technical field of pipe pile structures, solves the problem that in the prior art, an ECC pipe pile is insufficient in structural strength at the connecting position, and discloses an ECC impact-resistant pipe pile which comprises a pipe pile body and a steel ring plate arranged at one end of the pipe pile body. The pipe pile further comprises two limiting arc pipes, and the inner walls of the limiting arc pipes abut against the peripheral sides of the two pipe pile bodies. A plurality of connecting convex blocks are also included; a plurality of sliding grooves are formed in the outer wall of the steel ring plate. The inner wall of the limiting arc pipe is provided with connecting grooves allowing the corresponding connecting protruding blocks to be inserted therein. A plurality of connecting holes are circumferentially formed in the upper end part of the limiting arc pipe; limiting rods penetrate through the connecting holes and can penetrate into the connecting protruding blocks. A plurality of connecting studs and connecting grooves allowing the connecting studs on the other steel ring plate to be inserted therein are arranged on the surface of the steel ring plate at intervals. A positioning rod is arranged in the connecting groove; and the positioning rod is parallel to the connecting stud. The limiting arc pipe can firmly wrap the connecting position of the two pipe pile bodies, and the connecting stability and the impact resistance are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pipe pile structures, in particular to an ECC impact-resistant pipe pile. BACKGROUND

[0002] In the field of engineering structures, especially in application scenarios such as road crash barriers, bridge engineering, sewage treatment plants, etc., traditional concrete pipe piles are difficult to meet the high requirements of modern engineering on material durability and toughness due to their large brittleness, low tensile strength, poor impact resistance and other shortcomings.

[0003] ECC (Engineered Cementitious Composite) high ductility concrete, also known as "intelligent concrete" or "flexible concrete". Its unique feature is the micro-fiber reinforcement technology, by adding appropriate fiber materials (such as polypropylene fiber, glass fiber, polyvinyl alcohol fiber, etc.), the crack resistance and ductility of concrete can be significantly improved, so that it can withstand greater deformation without damage.

[0004] The prior art uses ECC to replace traditional concrete to make the main structure of the pipe pile. The bending performance, tensile performance, high strength and toughness, fatigue resistance and impact resistance of the pipe pile are improved.

[0005] For the related technologies in the above, multiple ECC pipe piles are generally connected by welding, however, when the pipe pile connection enters the underground, if the ECC pipe pile connection has insufficient ability to withstand transverse shear stress, the connection is prone to fracture, causing the adjacent ECC pipe piles to deviate. CONTENT OF THE INVENTION

[0006] In order to improve the defect of insufficient structural strength of the existing technology ECC pipe pile at the connection, the application provides an ECC impact-resistant pipe pile.

[0007] The following technical scheme is adopted:

[0008] The utility model provides an ECC impact resistance pipe pile, which comprises a pipe pile body and a steel ring plate arranged at one end of the pipe pile body; when two pipe pile bodies are connected, adjacent steel ring plates abut against each other; the utility model further comprises two limiting arc pipes, the inner wall of the limiting arc pipe abuts against the outer circumferential side of the two pipe pile bodies; the two limiting arc pipes are symmetrically distributed about the central axis of the pipe pile body to form a wrapping for the two steel ring plates; the utility model further comprises a plurality of connecting protrusions; a plurality of sliding grooves are formed in the outer wall of the steel ring plate, and the connecting protrusions are slidingly connected in the corresponding sliding grooves; a connecting groove is formed in the inner wall of the limiting arc pipe for inserting the corresponding connecting protrusion; a plurality of connecting holes are formed in the circumferential direction of the upper end of the limiting arc pipe, and the connecting holes are in communication with the connecting grooves; the connecting holes extend along the length direction of the pipe pile body; a limiting rod is arranged in the connecting hole, and the limiting rod can be inserted into the connecting protrusion; a plurality of connecting studs are arranged on the surface of the steel ring plate at intervals, and a connecting slot is formed for inserting the connecting stud on the other steel ring plate; a positioning rod is arranged in the connecting slot; the positioning rod is parallel to the connecting stud; the positioning rod can be moved to push the connecting protrusion to slide.

[0009] By adopting the above technical scheme, the close connection between the two pipe pile bodies is realized through the arrangement of the steel ring plate and the limiting arc pipe. The cooperation of the connecting protrusion and the sliding groove and the design of the connecting groove in the inner wall of the limiting arc pipe enable the limiting arc pipe to firmly wrap the connection between the two pipe pile bodies, thereby enhancing the stability and impact resistance of the connection.

[0010] Optionally, the pipe pile body is made of ECC material.

[0011] By adopting the above technical scheme, the ECC material has high strength, high toughness and good crack control ability.

[0012] Optionally, the two limiting arc pipes abut against each other to form a closed circular column structure.

[0013] Optionally, the abutment between one limiting arc pipe and another limiting arc pipe comprises a protruding portion and a recessed portion, and the protruding portion of one limiting arc pipe and the recessed portion of another limiting arc pipe cooperate with each other.

[0014] By adopting the above technical scheme, the stability and sealing property of the connection are enhanced, and the intrusion of external moisture and impurities is prevented. The stability and impact resistance of the connection are further improved.

[0015] Optionally, a chamfer is arranged at the end of the limiting arc pipe away from the steel ring plate.

[0016] Optionally, the steel ring plate is provided with a sliding hole at the bottom of the connecting groove, the sliding hole is communicated with one end of the sliding groove, and a positioning elastic member is arranged in the sliding hole to make the positioning rod always have a tendency to extend out of the surface extension of the steel ring plate.

[0017] By adopting the above technical scheme, the connecting protrusion can be accurately aligned and pushed to slide when the connecting stud is inserted into the connecting groove, and the connection is fast and reliable.

[0018] Optionally, a gap slot is arranged between the sliding hole and the sliding groove, one end of the positioning rod is rotatably connected with a connecting rod, and one end of the connecting rod is rotatably connected with the connecting protrusion.

[0019] By adopting the above technical scheme, the connecting rod and the connecting protrusion can slide together when the positioning rod moves, the connecting protrusion and the connecting groove of the limiting arc tube are automatically aligned and inserted, and the convenience and stability of the connection are further improved.

[0020] Optionally, two connecting blocks are slidably connected in the connecting groove, the two connecting blocks slide towards each other or away from each other, semicylindrical fixing grooves are arranged at opposite ends of the connecting blocks, and internal threads are arranged on the inner walls of the fixing grooves.

[0021] By adopting the above technical scheme and through the close cooperation of the internal threads and the connecting blocks, the firmness and reliability of the connection are achieved.

[0022] Optionally, the connecting groove is provided with a driving elastic member that always makes the two connecting blocks have a tendency to approach each other.

[0023] By adopting the above technical scheme, the driving elastic member can also provide additional fastening force, and the stability and impact resistance of the connection are enhanced.

[0024] Optionally, end blocks are arranged on the side walls of the connecting blocks, and edge slots are arranged on the inner walls of the connecting groove for the sliding of the limiting blocks.

[0025] By adopting the above technical scheme, the dislocation or falling off of the connecting blocks during the connection process is prevented.

[0026] In summary, the present application has the following at least one beneficial effect:

[0027] 1. The stability and impact resistance of the connection are improved: through the cooperation of the steel ring plate, the limiting arc tube, the connecting protrusion and the connecting stud, the tight connection between the two pipe pile bodies is achieved. This connection method not only enhances the stability of the connection, but also improves the impact resistance of the entire pipe pile, so that the structure can maintain its integrity under complex geological conditions and extreme loads.

[0028] 2. Improved construction efficiency and convenience: The introduction of chamfered designs, positioning elastic elements, connecting rods, and connecting blocks makes the connection process of the pipe pile faster and more convenient. These designs not only reduce construction time and cost, but also improve the accuracy and reliability of the connection.

[0029] 3. Enhanced adaptability and flexibility of the connection: The connecting blocks can slide towards each other or away from each other, and the design of the driving elastic elements and end blocks allows the connection system to adapt to different sizes and shapes of connecting studs. This design enhances the adaptability and flexibility of the connection, allowing the pipe pile to perform optimally in different application scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic diagram of the combination of two pipe pile bodies of the embodiment;

[0031] Figure 2 is a sectional structural schematic diagram of Figure 1 ;

[0032] Figure 3 is a sectional structural schematic diagram of the steel ring plate;

[0033] Figure 4 is an enlarged structural schematic diagram of A of Figure 3 ;

[0034] Figure 5 is a top view structural schematic diagram of one steel ring plate thereof.

[0035] Reference signs: 1, pipe pile body; 2, steel ring plate; 21, sliding groove; 22, connecting groove; 23, sliding hole; 24, accommodation groove; 3, limiting arc pipe; 31, connecting groove; 32, connecting hole; 4, connecting protrusion; 5, limiting rod; 6, connecting stud; 7, positioning rod; 71, positioning elastic element; 72, connecting rod; 8, connecting block; 81, fixed connecting groove; 82, driving elastic element; 83, end block. DETAILED DESCRIPTION

[0036] The application will be further described in detail below in conjunction with the accompanying drawings. Figure 1 to the accompanying drawings. Figure 5 Since multiple ECC pipe piles are generally connected by welding, however, when the pipe pile connection enters the underground, if the ECC pipe pile connection has insufficient ability to withstand transverse shear stress, the connection is prone to fracture, causing the adjacent ECC pipe piles to deviate.

[0037]

[0038] ​Therefore, in order to increase the stability of the ECC pipe pile connection structure during the process of exploring into the ground. The embodiment of the application discloses an ECC impact-resistant pipe pile, which comprises a pipe pile body 1 and a steel ring plate 2 arranged at least one end of the pipe pile body 1. For the convenience of display, two pipe pile bodies 1 are combined to show in this embodiment. Two pipe pile bodies 1 are coaxial and connected end to end, and the opposite ends of the two pipe pile bodies 1 are connected to the steel ring plate 2. The pipe pile body 1 is made of ECC material. The ECC material has high strength, high toughness and good crack control ability, so that the pipe pile body 1 can maintain the integrity of the structure when bearing dynamic load and complex stress state, and the impact resistance and service life of the whole pipe pile are improved. Two steel ring plates 2 abut each other, and the joint between the two steel ring plates 2 is welded. The steel ring plate 2 is a circular ring plate structure. Further, in order to increase the stability of the connection part after the steel ring plate 2 is welded. The ECC impact-resistant pipe pile further comprises two limiting arc pipes 3, the inner wall of the limiting arc pipe 3 abuts on the outer circumferential side of the two pipe pile bodies 1, and the two limiting arc pipes 3 are symmetrically distributed about the central axis of the pipe pile body 1, forming a package for the two steel ring plates 2. So as to protect the joint of the steel ring plate 2, and at the same time provide support for the pipe pile body 1 to increase the resistance to transverse shear stress during the process of exploring. Further, in order to increase the stability of the limiting arc pipe 3 when connected with the steel ring plate 2. The ECC impact-resistant pipe pile further comprises a plurality of connecting protrusions 4. A plurality of sliding grooves 21 are formed on the outer wall of the steel ring plate 2, and the connecting protrusions 4 are slidingly connected in the corresponding sliding grooves 21. The inner wall of the limiting arc pipe 3 is provided with a connecting groove 31 for inserting the corresponding connecting protrusion 4. The cooperation of the connecting protrusion 4 and the connecting groove 31 makes the fixation of the limiting arc pipe 3 more stable, and limits the sliding of the limiting arc pipe 3 along the axial direction of the pipe pile body 1. Further, in order to fix the limiting arc pipe 3. The ECC impact-resistant pipe pile further comprises a plurality of limiting rods 5. A plurality of connecting holes 32 are circumferentially formed on the upper end of the limiting arc pipe 3, and the connecting holes 32 are in communication with the connecting grooves 31. The connecting holes 32 extend along the length direction of the pipe pile body 1. The limiting rod 5 can penetrate into the connecting protrusion 4. In order to further improve the stability of the limiting rod 5 and the protrusion, an external thread can be arranged on the outer wall of the limiting rod 5, so that the limiting rod 5 and the connecting protrusion 4 are screw-connected.

[0039] Further, in order to increase the stability of the connection between the two steel ring plates 2 that abut each other, a plurality of connecting studs 6 are arranged on the surface of the steel ring plate 2 at intervals, and connecting grooves 22 are provided for the insertion of the connecting studs 6 on the other steel ring plate 2. That is, the connecting studs 6 and the connecting grooves 22 are arranged alternately along the circumference. The connecting studs 6 on the corresponding steel ring plate 2 can be inserted into the connecting grooves 22. A positioning rod 7 is arranged in the connecting groove 22, and the positioning rod 7 is parallel to the connecting stud 6 on the same steel ring plate 2. The positioning rod 7 can be moved to push the connecting lug 4 to slide. A sliding hole 23 is provided at the bottom of the connecting groove 22, and the sliding hole 23 is connected to one end of the sliding groove 21. A positioning elastic member 71 is arranged in the sliding hole 23, which always has a tendency to extend out of the surface of the steel ring plate 2. The positioning elastic member 71 is a spring. The positioning rod 7 initially extends out of the surface of the steel ring plate 2 to facilitate observation by the staff. The connecting stud 6 on the adjacent steel ring plate 2 can be aligned with the corresponding positioning rod 7, which facilitates the alignment of the connecting stud 6.

[0040] Further, a positioning rod 7 and a connecting lug 4 linkage scheme is provided. A clearance groove 24 is provided between the sliding hole 23 and the sliding groove 21. One end of the positioning rod 7 is rotatably connected to a connecting rod 72, and one end of the connecting rod 72 is rotatably connected to the connecting lug 4. The connecting rod 72 moves in the clearance groove 24. The sliding groove 21 and the sliding hole 23 are arranged in a T shape. The clearance groove 24 is triangular at the connection between the sliding groove 21 and the sliding hole 23.

[0041] Further, the two limiting arc pipes 3 abut each other to form a closed circular column structure. The abutting part of one limiting arc pipe 3 and the other limiting arc pipe 3 includes a protruding part and a recessed part, and the protruding part of one limiting arc pipe 3 and the recessed part of the other limiting arc pipe 3 cooperate with each other. This design further enhances the stability and sealing of the connection, prevents the intrusion of external moisture and impurities, and ensures the long-term reliability of the pipe pile body 1 in harsh environments. The two limiting arc pipes 3 can be more closely attached together, reducing the gap at the connection, and further improving the stability and impact resistance of the connection.

[0042] Further, the end of the limiting arc pipe 3 away from the steel ring plate 2 is provided with a chamfer. The chamfer reduces the resistance when the limiting arc pipe 3 penetrates into the soil. It is convenient to quickly and accurately install it in place, which improves the construction efficiency.

[0043] Further, in order to increase the stability of the connection between the two steel ring plates 2, two connecting blocks 8 are slidingly connected in the connecting groove 22, and the two connecting blocks 8 slide towards each other or away from each other. The opposite ends of the connecting block 8 are provided with a semicylindrical fixed connection groove 81. The inner wall of the fixed connection groove 81 is provided with internal threads. The connecting groove 22 is provided with a driving elastic member 82 that always causes the two connecting blocks 8 to have a tendency to move towards each other. The design of the connecting block 8 allows the connecting stud 6 to be firmly inserted into the connecting groove 22 and tightly fitted with the connecting block 8 through the internal threads, achieving the firmness and reliability of the connection. At the same time, the connecting block 8 can slide towards each other or away from each other, which is convenient for adapting to connecting studs 6 of different sizes. The design of the driving elastic member 82 allows the two connecting blocks 8 to always maintain close contact, ensuring the close fit between the connecting stud 6 and the connecting block 8. At the same time, the driving elastic member 82 can also provide additional fastening force, enhancing the stability and impact resistance of the connection.

[0044] Further, the side wall of the connecting block 8 is provided with an end block 83, and the inner wall of the connecting groove 22 is provided with a side groove for the sliding of the end block 83. The design of the end block 83 and the side groove limits the movement range of the connecting block 8, preventing the connecting block 8 from being dislocated or falling off during the connection process. At the same time, this design also allows the connecting block 8 to slide more smoothly in the connecting groove 22, improving the stability and reliability of the connection.

[0045] The implementation principle of the ECC impact-resistant pipe pile of the embodiment of the present application is as follows:

[0046] Place two ECC impact-resistant pipe piles that need to be connected at predetermined positions, ensuring that their center lines are aligned. Fix the steel ring plates 2 at one end of the two pipe piles respectively, ensuring that the steel ring plates 2 are tightly fitted with the pipe pile bodies 1. Hoist the pipe pile bodies 1 so that the ends abut, causing the positioning rods 7 and the connecting studs 6 to correspond. Continue to move, push the connecting studs 6 on the pipe pile bodies 1 to move the positioning rods 7, and insert them into the connecting grooves 22 on the steel ring plates 2 of the other pipe pile bodies 1. At this time, the connecting protrusions 4 are pushed out of the sliding grooves 21, and the two limiting arc tubes 3 are respectively sleeved on the outer circumferential sides of the two pipe piles, so that their inner walls are in close contact with the pipe pile bodies 1. At the same time, ensure that the two limiting arc tubes 3 are symmetrically distributed about the central axis of the pipe pile body 1, forming a wrapping of the two steel ring plates 2, and the connecting protrusions 4 are inserted into the connecting grooves 31. And insert the limiting rods 5, pass the limiting rods 5 through the connecting holes 32 at the upper end of the limiting arc tubes 3, and pass them through the connecting protrusions 4 to fix the position of the connecting protrusions 4. Ensure that the limiting rods 5 are inserted in place, and that the connecting protrusions 4 are tightly fitted with the connecting grooves 31 in the inner wall of the limiting arc tubes 3. Weld the seams of the limiting arc tubes 3 to complete the assembly.

[0047] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An ECC impact-tolerant pipe pile, characterized by: The utility model provides a kind of steel pipe pile, including pipe pile body (1) and the steel ring plate (2) being arranged in the one end of the pipe pile body (1); When two the pipe pile body (1) is connected, adjacent the steel ring plate (2) is abutted; Further include two limit arc pipes (3), the inner wall of the limit arc pipe (3) is abutted on the outer circumferential side of two the pipe pile body (1);Two the limit arc pipe (3) is symmetrically distributed with the central axis of the pipe pile body (1), forms the wrapping of two the steel ring plate (2); Further include several connecting protrusions (4);The outer wall of the steel ring plate (2) is equipped with several sliding grooves (21), the connecting protrusion (4) is slidably connected in corresponding the sliding groove (21);The inner wall of the limit arc pipe (3) is equipped with the connecting recess (31) for corresponding the connecting protrusion (4) insertion; The upper end of the limit arc pipe (3) is circumferentially equipped with several connecting holes (32), and the connecting hole (32) is communicated with the connecting recess (31);The connecting hole (32) extends along the length direction of the pipe pile body (1);The connecting hole (32) is penetrated by a limiting rod (5), and the limiting rod (5) can be penetrated into the connecting protrusion (4); The surface of the steel ring plate (2) is equipped with several connecting studs (6) at intervals, and the connecting groove (22) for the connecting stud (6) on another the steel ring plate (2) is inserted;The connecting groove (22) is provided with a positioning rod (7);The positioning rod (7) is parallel with the connecting stud (6);The positioning rod (7) can be moved to push the connecting protrusion (4) to slide.

2. The ECC impact-tube pile according to claim 1, wherein: The pipe pile body (1) is made of ECC material.

3. The ECC impact-tube pile of claim 1, wherein: Two the limit arc pipe (3) is mutually abutted to form the closed circular column structure.

4. The ECC impact-tube pile of claim 3, wherein: The abutment of one the limit arc pipe (3) and another the limit arc pipe (3) includes a convex portion and a concave portion, and the convex portion of one the limit arc pipe (3) and the concave portion of another the limit arc pipe (3) are matched with each other.

5. The ECC impact-tube pile of claim 1, wherein: The end of the limit arc pipe (3) away from the steel ring plate (2) is provided with a chamfer.

6. The ECC impact-tube pile of claim 1, wherein: The steel ring plate (2) is provided with a sliding hole (23) at the bottom of the connecting groove (22), and the sliding hole (23) is communicated with one end of the sliding groove (21);The sliding hole (23) is provided with a positioning elastic member (71) to make the positioning rod (7) always have a tendency to extend out of the surface of the steel ring plate (2).

7. An ECC impact-tolerant pipe pile according to claim 6, characterized in that: A gap groove (24) is formed between the sliding hole (23) and the sliding groove (21);One end of the positioning rod (7) is rotatably connected with a connecting rod (72), and one end of the connecting rod (72) is rotatably connected with the connecting protrusion (4);The connecting rod (72) moves in the gap groove (24).

8. The ECC impact-tube pile of claim 1, wherein: Two connecting blocks (8) are slidably connected in the connecting groove (22), and the two connecting blocks (8) slide towards each other or away from each other;Opposite ends of the connecting block (8) are provided with a semicylindrical fixed recess (81);The inner wall of the fixed recess (81) is provided with an internal thread.

9. The ECC impact-tube pile of claim 8, wherein: The connecting groove (22) is provided with a driving elastic member (82) to always make the two connecting blocks (8) have a tendency to approach each other.

10. The ECC impact-tube pile of claim 9, wherein: The side wall of the connecting block (8) is provided with an end block (83), and the inner wall of the connecting groove (22) is provided with a side groove for sliding of the end block (83).

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