CN217460546U - Mechanical connecting joint for tubular pile - Google Patents

Abstract

The utility model provides a tubular pile mechanical connection connects for connect two concrete pipe piles of superpose, it includes two annular end plates and staple bolt. The two annular end plates are used for being fixed at the end parts of the concrete pipe piles; the hoops are arranged along the peripheries of the two annular end plates; the staple bolt includes two piece at least arcs and the connecting plate that corresponds quantity, is provided with first recess on the connecting plate, and the width of first recess tank bottom is greater than the width of its notch, and the both ends surface of arc is provided with the arch respectively, and the arch of two adjacent arcs inserts side by side and connects two arcs as an organic whole in the first recess. Compared with the prior art, the hoop connecting pipe pile fully utilizes the good mechanical property of the hoop type joint, and realizes the whole hoop tension connection of the joint by adopting the sectional hoop fastening assembly, the alignment requirement is low during the assembly, and the installation is simple and rapid; the anchor ear and the fixed fitting have smaller sizes, so that bolts required for fixing are reduced, and the material and processing cost is reduced.

Description

Mechanical connecting joint for tubular pile

Technical Field

The utility model relates to a prestressed concrete tubular pile technical field especially relates to a tubular pile mechanical connection connects.

Background

The prestressed concrete tubular pile has the advantages of high single-pile bearing capacity, stable forming quality, proper price and the like, and is widely applied to foundation treatment engineering. However, due to the restrictions of conditions such as production, transportation and construction, the length of a single pile is limited, pile splicing treatment is often required in construction, reliable connection is a key for ensuring effective transmission of load borne by a pile body, and pile splicing quality directly influences the construction quality and bearing capacity level of the prestressed pipe pile. A large number of engineering practices show that the joint of the tubular pile is the weakest link in the whole pile foundation, so that the control of pile splicing quality has very important significance.

At present, prestressed concrete pipe piles mainly have two pile extension modes: welded connections and mechanical connections. The welding connection has the defects of large weather influence, difficult guarantee of welding quality, high labor intensity of workers, low construction efficiency and the like, and the tubular pile foundation accidents caused by poor welding quality of the joints in actual engineering are not rare. The mechanical connection is convenient and fast to construct relative to a welding mode, and can not be influenced by weather and the technical level of operators. At present, the mechanical connection mainly comprises connection methods such as an engagement type, a bolt type and a hoop type, wherein the engagement type and bolt type connectors have high processing precision requirements due to more accessories, so that the difficulty of production and site construction is increased; although the bolt type joint saves the cost by eliminating the end plate, the bending resistance and the shearing resistance of the joint structure are poor, so that the use working condition of the tubular pile is limited; the hoop type joint has good integral stress performance, but too many bolt connecting pieces are arranged for reliably fixing the hoop type joint, so that the sizes of the hoop and fixed accessories are large due to the limitation of the requirement of a bolt connecting structure, and the manufacturing cost is greatly increased; and current staple bolt draw-in groove is mostly the right angle design, and it is high to terminal plate plane roughness requirement, and actual on-the-spot assembly is also very difficult. For the reasons, the current mechanical connection mode is not popularized and applied in a large area, and the tubular pile construction is mainly welding pile splicing.

SUMMERY OF THE UTILITY MODEL

To the not enough among the above-mentioned prior art, the utility model aims to provide a tubular pile mechanical connection connects, its pile extension quality and the efficiency that can effectively improve the tubular pile.

The utility model provides a tubular pile mechanical connection connects for connect two concrete pipe piles of superpose, include:

the two annular end plates are used for being fixed at the end parts of the concrete pipe pile;

the hoops are arranged along the peripheries of the two annular end plates;

the staple bolt includes n blocks of arcs and n connecting plates, and n is not less than 2 integer, be provided with first recess on the connecting plate, the width of first recess tank bottom is greater than the width of its notch, the both ends surface of arc is provided with the arch respectively, the arch of two adjacent arcs form side by side with first recess matched with joint tongue, thereby the joint tongue can insert thereby make in the first recess two arcs are connected as an organic wholely.

The joint is integrally connected in an annular tensioning mode by adopting the sectional hoop buckling (the first groove is connected with the connecting tenon) for assembly, so that the alignment requirement is low during assembly, and the installation is simple and rapid; the anchor ear and the fixed fitting have smaller sizes, so that bolts required for fixing are reduced, and the material and processing cost is reduced.

Preferably, the first groove on the connecting plate is a dovetail groove, the protrusions of two adjacent arc-shaped plates are arranged side by side to form a dovetail joint matched with the dovetail groove, and the dovetail joint can be inserted into the dovetail groove, so that the two arc-shaped plates are connected into a whole.

Preferably, the first groove and the joint tongue are provided with tapered longitudinal sections, so that the connecting plate can be effectively prevented from being extruded upwards by soil layers and sliding off from the joint tongue.

Preferably, the inner side of the arc-shaped plate is provided with a second groove which is configured to accommodate the outer peripheral edges of the two annular end plates after being stacked.

Preferably, the outer peripheries of the two annular end plates are provided with outward protruding parts, and the two protruding parts are overlapped and embedded in the second groove.

Preferably, the protruding parts are provided with inclined planes connected with the end faces of the annular end plates, two protruding parts on the two annular end plates are overlapped to form a boss, and the cross section of the boss is trapezoidal; the second groove is matched with the boss, and the cross section of the second groove is trapezoidal. Form the bevel fit between second recess and the ring end plate, so, when guaranteeing that can not take place obvious relative shift yet or misplace when two ring end plates receive the shearing force on horizontal equidirectional, the ring end plate of can being convenient for and the installation of staple bolt to reduce to the requirement of end plate plane roughness.

Preferably, a rotation stopping structure is arranged between the two annular end plates and used for preventing the two annular end plates from rotating relatively.

Preferably, the rotation stopping structure comprises a positioning pin and positioning holes arranged on the two annular end plates, and two ends of the positioning pin are respectively arranged in the positioning holes on the two annular end plates.

Preferably, the positioning hole in one of the annular end plates is a screw hole, an external thread is arranged at one end of the positioning pin, and the positioning pin is in threaded connection with the annular end plate.

Preferably, the arc with be provided with the bolt hole on the connecting plate respectively, the bolt passes the bolt hole on connecting plate and the arc in proper order and makes arc and connecting plate form threaded connection, adopts the bolt to connect the staple bolt in staple bolt fixed connection, can prevent effectively that the connecting plate from receiving the ascending extrusion of soil layer and sliding from deviating from on the dovetail.

Preferably, the thickness of the connecting plate is gradually reduced from the dovetail groove to two sides; the material is saved and the production cost is reduced while the connection strength is ensured.

Preferably, the surfaces of the annular end plate and the hoop are provided with anti-corrosion layers so as to be suitable for different corrosion environments.

Compared with the existing tubular pile connecting structure, the utility model adopts the hoop to connect the tubular pile, makes full use of the good mechanical property of the hoop type joint, and realizes the whole hoop tension connection of the joint by adopting the sectional hoop lock joint assembly, and has low alignment requirement during assembly and simple and rapid installation; the anchor ear and the fixed fittings are small in size, bolts needed for fixing are reduced, and material and processing cost is reduced. The dovetail groove and the dovetail joint are designed to be in a conical shape with a large upper part and a small lower part, so that the connecting plate can be effectively prevented from being extruded upwards by soil layers and sliding off from the dovetail joint. The anchor ear is fixedly connected with the anchor ear by adopting a high-strength bolt, so that the anchor ear connecting piece can be prevented from being extruded out by the friction force of soil on the side wall of the tubular pile when the tubular pile enters a foundation. Through setting up the bulge in two ring end plate peripheries, and the bulge that makes two superposes forms outside convex cross section jointly and is roughly trapezoidal structure, the second recess of two bulge adaptations after setting on the arc and the folding, form the oblique angle cooperation between second recess and the ring end plate, thus, when guaranteeing that can not take place obvious relative shift or dislocation yet when two ring end plates receive horizontal equidirectional upward shearing force, the installation of ring end plate and staple bolt of being convenient for, thereby reduce the requirement to the flat flatness of end plate.

The above-mentioned technical features can be combined in various suitable ways or replaced by equivalent technical features as long as the purpose of the invention can be achieved.

Drawings

The invention will be described in more detail hereinafter on the basis of non-limiting examples only and with reference to the accompanying drawings. Wherein:

fig. 1 is a schematic structural view of a mechanical coupling joint for a tubular pile according to an embodiment of the present invention;

fig. 2 is a partially exploded view of a mechanical coupling joint for a tubular pile according to an embodiment of the present invention;

fig. 3 is a top view of a mechanical coupling joint for a tubular pile according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;

fig. 5 is a schematic perspective view of a hoop according to an embodiment of the present invention;

fig. 6 is a schematic perspective view of an arc plate according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of a connecting portion according to an embodiment of the present invention;

fig. 8 is a top view of a connection plate according to an embodiment of the present invention;

fig. 9a is a schematic perspective view of a ring-shaped end plate according to an embodiment of the present invention;

fig. 9b is a schematic perspective view of a ring-shaped end plate with another rotation stopping structure according to an embodiment of the present invention;

fig. 10 is a partial cross-sectional view of a hoop according to an embodiment of the present invention;

fig. 11 is a top view of a connecting plate according to another embodiment of the present invention;

fig. 12 is a top view of a hoop according to another embodiment of the present invention;

fig. 13 is a cross-sectional view of a hoop according to another embodiment of the present invention;

fig. 14 is a perspective view of a hoop of a four-bolt fastening connection plate according to another embodiment of the present invention.

Description of reference numerals:

1. a first annular end plate; 2. a second annular end plate; 3. an arc-shaped plate; 4. a connecting plate; 5. a dovetail groove; 6. a protrusion; 7. a second groove; 8. a projection; 9. a bevel; 10. positioning holes; 11. positioning pins; 12a, 12b, bolt holes; 13. bolt, 10a, boss.

Detailed Description

For making the purpose, technical solution and advantages of the present invention clearer, it will be right below that the technical solution of the present invention is clearly and completely described, based on the specific embodiments of the present invention, all other embodiments obtained by the ordinary skilled person in the art without creative work belong to the scope protected by the present invention.

The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.

All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As shown in fig. 1 to 4, the mechanical tubular pile connecting joint includes a first annular end plate 1, a second annular end plate 2 and a hoop. When the concrete pipe pile is prepared, the first annular end plate 1 and the second annular end plate 2 are respectively fixed at the end parts of the two pipe piles, and when the pile is connected, the two pipe piles are abutted and aligned through the first annular end plate 1 and the second annular end plate 2. After two tubular piles and two annular end plates are stacked, the hoop is arranged along the peripheries of the first annular end plate 1 and the second annular end plate 2, the two annular end plates can be fixed through the hoop to enable the end faces of the two annular end plates to be abutted, and therefore the two stacked tubular piles are connected into a whole.

Referring to fig. 4 and 9a, a rotation stopping structure is arranged between the first annular end plate 1 and the second annular end plate 2, the rotation stopping structure comprises a positioning pin 11 and positioning holes 10 arranged on the first annular end plate 1 and the second annular end plate 2, two ends of the positioning pin 11 are respectively installed in the positioning holes 10 on the first annular end plate 1 and the second annular end plate 2, and the rotation stopping structure can effectively prevent the two annular end plates from rotating with each other. The positioning hole 10 can be a circular hole, a rectangular hole or a screw hole. In one embodiment, the positioning holes 10 of the two ring-shaped end plates are both round holes or rectangular holes, the positioning pins 11 are round pins or square pins, and two ends of the positioning pins 11 are respectively inserted into the round holes or the rectangular holes of the two ring-shaped end plates. In another embodiment, the positioning hole 10 formed in the first annular end plate 1 is a screw hole, the positioning hole 10 formed in the second annular end plate 2 is a circular hole or a rectangular hole, one end of the positioning pin 11 is provided with an external thread, the other end of the positioning pin 11 is cylindrical or rectangular columnar, one end with the external thread of the positioning pin 11 is screwed into the screw hole, and the other end of the positioning pin is inserted into the circular hole or the rectangular hole.

In another embodiment, referring to fig. 9b, the rotation stopping structure is further configured to include a plurality of protruding columns 10a protruding from one of the annular end plates 2 and integrally formed with the annular end plate, and holes (not shown) formed in the other annular end plate 1 and matching with the protruding columns 10a, and the protruding columns 10a are inserted into the holes, so that the two annular end plates 1 and 2 can be prevented from rotating relatively.

The staple bolt comprises two piece at least arc 3 and the connecting plate 4 with the same quantity of arc 3. Referring to fig. 5 to 8, three connecting plates 4 connect three arc-shaped plates 3 to form an annular hoop, wherein each arc-shaped plate 3 forms a central angle of 120 degrees with respect to the outer periphery of the annular end plate, thereby surrounding the entire outer periphery of the first and second annular end plates 1 and 2. These arc-shaped plates 3 have substantially the same dimensions, whereby a standardized production can be achieved. Be provided with first recess on the connecting plate, the width at first recess tank bottom is greater than the width of its notch, and the surface at arc both ends is provided with the arch respectively, the arch of two adjacent arcs form side by side with first recess matched with joint tongue, thereby the joint tongue can insert and make in the first recess two arcs are connected as an organic wholely.

Referring to fig. 7 and 8, the first groove on the connecting plate 4 is a dovetail groove 5, and the cross section of the dovetail groove 5 is dovetail-shaped. Referring to fig. 5 and 6, the outer surfaces of the two ends of the arc-shaped plates 3 are respectively provided with a protrusion 6 extending along the axial direction of the hoop, the connection tenon formed by the protrusions 6 of two adjacent arc-shaped plates 3 side by side is a dovetail tenon, the dovetail tenon is matched with the dovetail groove 5, and the cross section of the dovetail tenon is in a dovetail shape; the dovetail can be inserted into the dovetail groove 5 in a sliding way, so that the two arc-shaped plates 3 are connected into a whole. The hoop formed by connecting the arc plates 3 by using the connecting plate 4 provided with the dovetail groove 5 is simple in connecting part and convenient to operate, the connected hoop can resist transverse shearing force, and the upper and lower tubular piles can be prevented from shifting when bearing the transverse shearing force through the tubular piles connected by the hoop. Compared with the existing anchor ear connected through the bolt, the scheme realizes the whole annular tensioning of the joint by buckling and assembling the segmented anchor ear, has low alignment requirement during assembling and is simple and rapid to install; the anchor ear and the fixed fitting have smaller sizes, so that bolts required for fixing are reduced, and the material and processing cost is reduced.

Preferably, the dovetail groove 5 and the dovetail have tapered longitudinal sections, the longitudinal section of the dovetail and the longitudinal section of the dovetail groove 5 gradually decrease from top to bottom; during the pile, because the tubular pile moves down, the frictional force of tubular pile lateral wall soil can upwards extrude connecting plate 4, with dovetail 5 and dovetail's design for big-end-up's toper can prevent effectively that connecting plate 4 from receiving the ascending extrusion of soil horizon and sliding from deviating from on the dovetail.

Referring to fig. 13, the first groove on the connecting plate 4 is a rectangular groove, the cross section of the rectangular groove is rectangular, and the width of the bottom of the rectangular groove is greater than that of the notch. The outer surfaces of the two ends of each arc-shaped plate 3 are respectively provided with a bulge extending along the axial direction of the anchor ear, each bulge is provided with an L-shaped cross section, the bulges of two adjacent arc-shaped plates 3 are arranged side by side to form a connecting tenon matched with the rectangular groove, and the cross section of each connecting tenon is T-shaped; the connecting tenon can be inserted into the rectangular groove in a sliding way, so that the two arc-shaped plates 3 are connected into a whole. Preferably, the rectangular groove and the T-shaped connecting tenon are provided with tapered longitudinal sections, and the longitudinal sections of the T-shaped connecting tenon and the rectangular groove are gradually reduced from top to bottom; during piling, because the tubular pile moves down, the frictional force of the soil on the side wall of the tubular pile can extrude the connecting plate 4 upwards, and the rectangular groove and the T-shaped connecting tenon are designed into a conical shape with a large upper part and a small lower part, so that the connecting plate 4 can be effectively prevented from being extruded upwards by the soil layer and sliding off from the T-shaped connecting tenon.

Referring to fig. 1, 5, 10 and 14, in order to prevent the friction force of soil on the side wall of the pipe pile from extruding out the connecting plate 4 of the anchor ear when the pipe pile enters the foundation, bolt holes 12a and 12b may be further provided on the arc-shaped plate 3 and the connecting plate 4, respectively, and bolts 13 sequentially pass through the bolt holes 12a and 12b on the connecting plate 4 and the arc-shaped plate 3 to form a threaded connection between the arc-shaped plate 3 and the connecting plate 4, where the bolts 13 preferably use high-strength bolts 13. Each connecting plate 4 can be fixed with the arc-shaped plate by two bolts arranged diagonally, and the fixing mode can reduce the using amount of the bolts, reduce the using amount of accessories and simplify the assembly process (see fig. 1, 5 and 10); each connecting plate 4 can also be fixed with the arc-shaped plate by four bolts, and the fixing mode ensures that the connecting plate 4 and the arc-shaped plate are fixed more firmly (see figure 14)

As shown in fig. 11 and 12, in order to save material and reduce production cost while ensuring the connection strength, the connection plate 4 may be designed to have a structure with a thick middle and thin sides. The dovetail groove 5 is formed in the middle of the connecting plate 4, and the thickness of the connecting plate 4 is gradually reduced towards two sides by taking the dovetail groove 5 as a center.

The inboard second recess 7 that sets up of arc 3, second recess 7 are used for holding the periphery border of two ring end plates after the stack, can effectively restrict two ring end plate axial ascending displacements through second recess 7, make two ring plates can keep the superpose state, ensure the connection of tubular pile.

In an embodiment, the annular end plate can be a flat plate with the same thickness at each position, the second groove 7 of the hoop can be designed into a right angle, and the annular end plate can be fixed through the second groove 7 to ensure the connection of the tubular pile.

In another embodiment, referring to fig. 4 and 9a, the two ring-shaped end plates are provided with outward protruding protrusions 8 on the outer peripheries thereof, the two overlapped protrusions 8 together form a structure with a substantially trapezoidal outward protruding cross section, the second groove 7 on the arc-shaped plate 3 is matched with the two overlapped protrusions 8, and the cross section of the second groove 7 is also substantially trapezoidal, so that the two overlapped protrusions 8 can be embedded into the second groove 7, thereby clamping and keeping the two overlapped protrusions 8 in an overlapped state, so that the two ring-shaped end plates are not obviously displaced or dislocated relatively even when being subjected to a shear force in the transverse direction and the like, and the overlapped pipe piles are ensured to have enough connection strength. The projections 8 on the ring-shaped end plate are preferably ring-shaped to ensure that when the upper located pile is subjected to a downward hammer from the pile driver, the pile will not tip over the projections 8 as a bearing surface.

Preferably, the cross section of the protrusion 8 is a right trapezoid, and the protrusion 8 on the first ring-shaped end plate 1 has a slope 9 connected to the top end face of the first ring-shaped end plate 1, a bottom face connected to and parallel to the bottom end face of the first ring-shaped end plate 1, and a side face perpendicular to the bottom end face of the first ring-shaped end plate 1. The protrusion 8 on the second annular end plate 2 has a slope 9 connected to the bottom end face of the second annular end plate 2, a bottom face connected to and parallel to the top end face of the second annular end plate 2, and a side face perpendicular to the bottom end face of the second annular end plate 2. After the two annular end plates are overlapped, the two convex parts 8 are overlapped to form a boss, and the cross section of the boss is in an isosceles trapezoid shape. Second recess 7 on arc 3 matches with the boss, and the cross section of second recess 7 also is isosceles trapezoid, and the height of 8 of bulge is not less than the degree of depth of second recess 7, and the height of 8 of preferred bulge is 0.5-1mm more than the degree of depth of second recess 7. Through the bulge 8 that has inclined plane 9 in the ring end plate setting, make bulge 8 and 3 second recesses 7 of arc pass through inclined plane 9 cooperations, second recesses 7 from the bottom to the top enlarges gradually, so can be convenient for the installation of ring end plate and staple bolt to reduce to the requirement of end plate plane roughness.

The tubular pile mechanical connecting joint is preferably made of steel with grade more than Q235B or Q235B, and an anticorrosive layer is arranged on the surface of the tubular pile mechanical connecting joint so as to be suitable for different corrosion environments.

When pile driving operation is needed, inserting a positioning pin 11 into the annular end plate positioning hole 10 of one of the tubular piles, mutually stacking two tubular piles to be connected through two aligned annular end plates, and connecting the positioning pin 11 with the two annular end plates; next, arranging the arc-shaped plates 3 on the peripheries of the annular end plates so as to align the protruding parts 8 of the two annular end plates which are overlapped with each other with the second grooves 7 of the arc-shaped plates 3, and connecting the two connected arc-shaped plates 3 by using the connecting plate 4 so that the arc-shaped plates 3 surround the protruding parts 8 on the periphery of the whole tubular pile; then, the high-strength bolt 13 is screwed into the screw hole to complete the connection operation of the pipe pile.

Finally, it should be noted that: the above embodiments and examples are only used to illustrate the technical solution of the present invention, but not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments and examples, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments or examples may still be modified, or some of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments or examples of the present invention.

Claims (12)

1. The utility model provides a tubular pile mechanical connection connects for connect two piece superpose concrete tubular piles, its characterized in that includes:

the two annular end plates are used for being fixed at the end parts of the concrete pipe pile;

the hoops are arranged along the peripheries of the two annular end plates;

the staple bolt includes n blocks of arcs and n connecting plates, and n is not less than 2 integer, be provided with first recess on the connecting plate, the width of first recess tank bottom is greater than the width of its notch, the both ends surface of arc is provided with the arch respectively, the arch of two adjacent arcs form side by side with first recess matched with joint tongue, thereby the joint tongue can insert thereby make in the first recess two arcs are connected as an organic wholely.

2. The mechanical tubular pile joint according to claim 1, wherein the first groove on the connecting plate is a dovetail groove, the protrusions of two adjacent arc-shaped plates are arranged side by side to form a dovetail which is matched with the dovetail groove, and the dovetail can be inserted into the dovetail groove so that the two arc-shaped plates are connected into a whole.

3. The mechanical tube pile connection joint according to claim 1 or 2, wherein the first groove and the connection tongue each have a tapered longitudinal section.

4. The mechanical pipe pile connection joint of claim 1, wherein the inner side of the arc-shaped plate is provided with a second groove configured to accommodate the outer peripheral edges of the two annular end plates after stacking.

5. The mechanical tubular pile connection joint according to claim 4, wherein the peripheries of the two ring-shaped end plates are provided with outward-protruding protrusions, and the two protrusions are overlapped and embedded in the second grooves.

6. The mechanical tubular pile connection joint of claim 5, wherein the protrusions have inclined surfaces connected with the end surfaces of the annular end plates, two protrusions on two annular end plates are superposed to form a boss, and the cross section of the boss is trapezoidal; the second groove is matched with the boss, and the cross section of the second groove is trapezoidal.

7. The mechanical tubular pile joint according to claim 1, wherein a rotation stopping structure is arranged between the two ring-shaped end plates and used for preventing the two ring-shaped end plates from rotating relatively.

8. The mechanical pipe pile joint according to claim 7, wherein the rotation stopping structure comprises a positioning pin and positioning holes arranged on the two annular end plates, and two ends of the positioning pin are respectively arranged in the positioning holes on the two annular end plates.

9. The mechanical pipe pile connector according to claim 8, wherein the positioning hole of one of the annular end plates is a screw hole, and an external thread is provided at one end of the positioning pin, and the positioning pin is in threaded connection with the annular end plate.

10. The mechanical pipe pile connector according to any one of claims 1, 2 and 4-9, wherein the arc-shaped plate and the connecting plate are respectively provided with bolt holes, and bolts sequentially penetrate through the bolt holes on the connecting plate and the arc-shaped plate to enable the arc-shaped plate and the connecting plate to form threaded connection.

11. The mechanical connection joint of tubular pile according to any one of claims 1, 2 and 4-9, wherein the thickness of the connection plate is gradually reduced from dovetail groove to two sides.

12. The mechanical connection joint of tubular pile according to any one of claims 1, 2 and 4-9, wherein the annular end plate and the hoop are provided with anti-corrosion layers on the surfaces thereof.

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