Connecting structure of bridge prefabricated pipe pile and prefabricated bearing platform

Abstract

The invention relates to a connecting structure of a bridge prefabricated pipe pile and a prefabricated bearing platform, and relates to the technical field of building construction, the connecting structure comprises a prefabricated pile and a prefabricated platform, a pouring through hole allowing the upper end of the prefabricated pile to be inserted is formed in the prefabricated platform, and a plurality of steel bars are evenly and fixedly arranged on the upper side face of the prefabricated platform around the pouring through hole; a connecting plate is fixedly arranged on the upper side face of the prefabricating table, and a connecting through hole coinciding with the pouring through hole is formed in the connecting plate; a plurality of guide rods facing the precast pile are mounted on the inner wall of the connecting through hole, the guide rods are parallel to the axis of the precast pile, and guide slopes are arranged on the edges of the ends, facing the precast pile, of the guide rods; the upper end of the precast pile can be inserted into the pouring through hole along the guide inclined surface, and at the moment, the peripheral surface of the precast pile abuts against the peripheral surface of the guide rod; the probability of deviation or dislocation during butt joint of the prefabricated bearing platform and the prefabricated pipe pile is effectively reduced.

Description

Technical Field

[0001] This application relates to the technical field of building construction, and in particular to a connection structure between precast pipe piles and precast pile caps for bridges. Background Art

[0002] With the continuous development of society, infrastructure construction has been continuously promoted. As a key node in the transportation network, the construction quality and efficiency of bridges are of crucial importance. The pile cap structure, as an important supporting part of the lower part of the bridge, directly affects the overall stability and safety of the bridge. Against the background of the continuous expansion of the scale of bridge construction and the increasing requirements for construction speed and quality, the design and construction technology of the pile cap structure are also constantly innovating. Developing a more efficient, reliable pile cap structure that can meet diverse engineering requirements has become an important topic in the field of bridge construction to adapt to the changing construction environment and technical requirements.

[0003] In the related art, a pile cap structure for bridges mainly consists of a precast pile cap and precast pipe piles. A pouring hole is opened in the middle of the precast pile cap. During the construction of the pile cap at the lower part of the bridge, the precast pipe piles need to be first buried underground, and it is ensured that the upper ends of the precast pipe piles are above the ground; subsequently, the precast pile cap is hoisted above the precast pipe piles, and the upper ends of the precast pipe piles are inserted into the pouring holes. At this time, there is a gap between the precast pipe piles and the pouring holes. Finally, concrete is poured into this gap. After the concrete solidifies, the stable connection between the precast pile cap and the precast pipe piles can be achieved, and the construction of the pile cap structure is completed.

[0004] However, when using a crane to align the precast pile cap with the precast pipe piles that have been buried, due to the complex construction site environment, there may be reasons such as uneven ground, limited crane operation accuracy, and unclear positioning marks on the precast pile cap and precast pipe piles. It is easy for the docking of the precast pile cap and the precast pipe piles to have deviations or misalignments. Such uneven gaps will cause the concrete to be difficult to fill evenly during the pouring process, and there may be insufficient concrete filling in some areas, thus affecting the overall strength and stability of the pile cap structure, and there is room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide a connection structure between precast pipe piles and precast pile caps for bridges, so as to solve the problem that the docking of the precast pile cap and the precast pipe piles in the above-mentioned related art is prone to deviations or misalignments, affecting the quality of the pile cap.

[0006] A connection structure between precast pipe piles and precast pile caps for bridges provided by this application adopts the following technical solutions: A connecting structure between a precast pipe pile and a precast bearing platform of a bridge, comprising a precast pile and a precast platform. A pouring through-hole for inserting the upper end of the precast pile is formed in the precast platform, and a plurality of steel bars are fixedly arranged around the pouring through-hole on the upper side surface of the precast platform; a connecting plate is fixedly arranged on the upper side surface of the precast platform, and a connecting through-hole coinciding with the pouring through-hole is formed in the connecting plate; a plurality of guide rods facing the precast pile are installed on the inner wall of the connecting through-hole, the guide rods are parallel to the axis of the precast pile, and a guide inclined surface is arranged at the edge of the end of the guide rod facing the precast pile; the upper end of the precast pile can be inserted into the pouring through-hole along the guide inclined surface, and at this time, the outer peripheral surface of the precast pile is in contact with the outer peripheral surface of the guide rod.

[0007] By adopting the above technical solution, during the docking and installation process of the precast platform and the precast pile, the guide rods are parallel to the axis of the precast pile and a guide inclined surface is arranged at the edge of their ends. When the precast platform is hoisted above the precast pipe pile by a crane, even if the construction site environment is complex, there are situations such as uneven ground and limited operating accuracy of the crane, the upper end of the precast pile can still be smoothly inserted into the pouring through-hole along the guide inclined surface. This design effectively reduces the probability of deviation or misalignment when the precast bearing platform and the precast pipe pile are docked, enables a relatively uniform gap to be formed between the outer peripheral surface of the precast pile and the inner wall of the pouring through-hole, so as to ensure that when concrete is subsequently poured into this gap, the concrete can be evenly filled, avoiding the situation of insufficient concrete filling in some areas, and greatly improving the overall strength and stability of the pile cap structure.

[0008] Optionally, a plurality of reinforcing rods are embedded on the outer periphery of the upper end of the precast pile, a bent rod is vertically fixedly arranged at the end of the reinforcing rod away from the precast platform, and a receiving sinking groove for placing the bent rod is formed at the lower edge of the opening of the pouring through-hole.

[0009] By adopting the above technical solution, when the upper end of the precast pile is inserted into the pouring through-hole, the bent rod will enter the receiving sinking groove accordingly. When concrete is subsequently poured into the gap between the outer peripheral surface of the precast pile and the inner wall of the pouring through-hole, the concrete will simultaneously fill the receiving sinking groove, and then completely cover the bent rod and the reinforcing rod. This covering effect enables the reinforcing rod and the bent rod to be closely combined with the concrete, forming an integral stress structure, enhancing the tensile and shear resistance between the precast pile and the precast platform, and greatly improving their assembly stability.

[0010] Optionally, a plurality of fixing holes for the steel bars on the precast platform to penetrate are formed in the connecting plate, and a fixing sleeve in contact with the side surface of the connecting plate away from the precast platform is fixedly arranged on the outer periphery of the steel bars.

[0011] By adopting the above technical solution, when installing the connecting plate, the steel bars embedded in the precast table are passed through the corresponding fixing holes on the connecting plate, and the fixing sleeves fixed on the outer periphery of the steel bars move along with the steel bars until they are in close contact with the side of the connecting plate away from the precast table. Through the limiting effect of the fixing sleeves, the connecting plate is reliably positioned on the precast table, preventing it from shaking or shifting, and ensuring the accuracy of the installation position of the connecting plate.

[0012] Optionally, a plurality of traction rings are hinged on the outer peripheral edge of the connecting plate.

[0013] By adopting the above technical solution, during the bridge construction process, it is necessary to use a crane to lift the precast table to the designated position for installation. The plurality of traction rings hinged on the outer peripheral edge of the connecting plate provide a convenient and stable connection point for the lifting ropes of the crane. The lifting ropes on the crane can be directly inserted into the traction rings and fastened, with simple and efficient operation, greatly shortening the lifting preparation time and improving the construction efficiency.

[0014] Optionally, a placement sink for placing the connecting plate is provided on the upper side surface of the precast table, and the upper side surface of the connecting plate is flush with the outer side surface of the connecting plate.

[0015] By adopting the above technical solution, a placement sink for placing the connecting plate is provided on the upper side surface of the precast table, enabling the connecting plate to be accurately embedded therein, playing a good positioning role, ensuring the accuracy of the installation position of the connecting plate, preventing it from shifting during use, and providing a stable foundation for subsequent construction.

[0016] Optionally, a plurality of guiding blocks are fixed on the inner wall of the connecting through hole of the connecting plate, and guiding holes for the guiding rods to pass through are provided on the guiding blocks; a limiting block is fixed on the outer periphery of the end of the guiding rod away from the precast pile, a limiting sink for the limiting block to be inserted into is provided on the upper edge of the opening of the guiding hole, and a locking member for fixing the limiting block in the limiting sink is provided above the connecting plate.

[0017] By adopting the above technical solution, the stability of the guiding rod during subsequent construction is ensured. When pouring concrete into the gap between the precast pile and the inner wall of the pouring through hole, the guiding rod will not shift due to the impact of the concrete or external forces, thereby ensuring that the concrete can uniformly fill the gap.

[0018] Optionally, the locking member includes a locking ring rotatably provided on the upper side surface of the precast table, and a locking hole coinciding with the connecting through hole is provided on the locking ring; a locking convex plate is fixed on the inner wall of the locking hole, and the locking ring can rotate reciprocally around the axis of the locking hole; the locking convex plate can rotate with the locking ring to a state where it abuts against the side surface of the limiting block away from the guiding block.

[0019] By adopting the above technical solution, rotating the locking ring arranged on the upper side of the precast table and cooperating with the locking holes thereon that coincide with the connection through holes, a clear positioning basis for the locking operation is provided. The locking convex plates fixed on the inner wall of the locking holes can move as the locking ring rotates. When rotated to abut against the side of the limiting block away from the guiding block, the limiting block can be firmly fixed in the limiting sink, and then the guiding rod is fixed. This locking method is simple to operate. The construction workers only need to rotate the locking ring to complete the locking, greatly improving the construction efficiency.

[0020] Optionally, a guiding inclined surface is arranged on the outer edge of the limiting block, and a locking notch is opened on the outer periphery of the end of the guiding rod away from the limiting block; the locking convex plate can be in the same plane as the locking notch when the guiding rod slides upward, and in this state, the locking convex plate can rotate with the locking ring into the locking notch.

[0021] By adopting the above technical solution, when the guiding rod slides upward until the locking convex plate is in the same plane as the locking notch, rotating the locking ring, the locking convex plate can smoothly enter the locking notch along the guiding direction, realizing reliable locking of the guiding rod. This locking method is not only simple to operate but also can ensure that the locking convex plate is closely attached to the locking notch, enhancing the firmness of the locking; at this time, the stable guiding rod provides reliable support and positioning during the installation of the pier, enabling the exposed parts of the four steel bars and the upper end of the guiding rod to be accurately embedded at the lower end of the pier, enhancing the assembly stability of the pier and the precast table, and improving the construction quality and reliability of the entire bridge pile cap structure.

[0022] Optionally, a first inclined surface is arranged on the opening edge of the guiding rod at the locking notch.

[0023] By adopting the above technical solution, the first inclined surface can guide the locking convex plate to slide into the locking notch more smoothly, reducing the collision and jamming between the locking convex plate and the edge of the locking notch, lowering the operation difficulty, enabling the construction workers to complete the locking action more easily, and improving the construction efficiency.

[0024] Optionally, an anti - detachment block is fixed on the outer periphery of the end of the guiding rod away from the limiting block, and an anti - detachment sink for the anti - detachment block to be inserted into is opened on the lower edge of the opening of the guiding hole.

[0025] By adopting the above technical solution, during the installation of the guide rod, when the guide rod is inserted into the guide hole, the anti - detachment block fixed on the outer periphery of the end of the guide rod away from the limit block will enter the guide hole accordingly, and finally be stuck in the anti - detachment sinking groove at the lower edge of the opening of the guide hole. The cooperation between the anti - detachment block and the anti - detachment sinking groove forms a reliable anti - detachment structure. Even when pouring concrete into the gap between the precast pile and the inner wall of the pouring through - hole subsequently, and the guide rod is impacted by the concrete or affected by external forces, the anti - detachment block can firmly be stuck in the anti - detachment sinking groove, effectively preventing the guide rod from disengaging from the guide hole and ensuring that the guide rod is always in the correct installation position. This not only ensures that the concrete can evenly fill the gap, but also provides strong support for the accurate positioning of the guide rod for the steel bars during the installation of the bridge pier, enhancing the stability of the assembly of the bridge pier and the precast platform.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. During the docking and installation of the precast platform and the precast pile, the guide rod is parallel to the axis of the precast pile and the edge of its end is provided with a guide slope. When using a crane to hoist the precast platform above the precast pipe pile, even if the construction site environment is complex, with uneven ground, limited operating accuracy of the crane, etc., the upper end of the precast pile can smoothly insert into the pouring through - hole along the guide slope.

[0027] 2. When the guide rod slides upward until the locking convex plate and the locking notch are in the same plane, rotate the locking ring, and the locking convex plate can smoothly enter the locking notch along the guiding direction, realizing reliable locking of the guide rod. This locking method is not only simple to operate, but also ensures that the locking convex plate and the locking notch are closely fitted, enhancing the firmness of locking; at this time, the stable guide rod provides reliable support and positioning during the installation of the bridge pier, enabling the exposed parts of the four steel bars and the upper end of the guide rod to be accurately embedded at the lower end of the bridge pier, enhancing the assembly stability of the bridge pier and the precast platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 is the overall structural schematic diagram of the embodiment of the present application; Figure 2 is the exploded structural schematic diagram showing the installation distribution of the precast pile and the precast pipe in the embodiment of the present application; Figure 3 is the partial sectional structural schematic diagram showing the installation cooperation of the precast pile and the precast pipe in the embodiment of the present application; Figure 4It is a schematic diagram of the exploded structure of the installation distribution of the locking member and the guide rod in the embodiment of the present application; Figure 5 It is a partial cross-sectional structural schematic diagram of the installation and matching of the guide rod in the embodiment of the present application; Figure 6 It is a structural schematic diagram of the installation and coordination of the limit block and the anti-dropping block in an embodiment of the present application.

[0030] Figure 7 This is a schematic diagram of the structure of the embodiment of the present application after the guide rod is moved upward and fixed; Figure 8 It is a schematic diagram of the partial cross-sectional structure of the embodiment of the present application after the guide rod is moved up and fixed.

[0031] In the figure, 1, precast pile; 11, reinforcing rod; 12, bending rod; 2, precast platform; 21, casting through hole; 22, steel bar; 221, fixing sleeve; 23, placing sink; 231, accommodating groove; 24, accommodating sink; 3, connecting plate; 31, connecting through hole; 32, fixing hole; 33, guide block; 331, guide hole; 332, limiting sink; 333, anti-slip sink; 35, traction pull ring; 4, guide rod; 41, guide slope; 42, limiting block; 421, guide slope; 43, anti-slip block; 44, locking notch; 441, first slope; 5, locking piece; 51, locking ring; 511, locking hole; 52, locking convex plate. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0033] Example: Reference Figure 1 , Figure 2 and Figure 3 A connection structure between a prefabricated pipe pile and a prefabricated cap for a bridge comprises a prefabricated pile 1 and a prefabricated platform 2, wherein the prefabricated platform 2 is provided with a casting through hole 21 for inserting the upper end of the prefabricated pile 1, and four steel bars 22 are evenly fixed around the casting through hole 21 on the upper side of the prefabricated platform 2; the prefabricated pile 1 and the prefabricated platform 2 are both cast by concrete, and the four steel bars 22 are pre-buried and fixed when the prefabricated platform 2 is cast, and the prefabricated pile 1 and the prefabricated platform 2 are both prefabricated in a factory before construction; A connection plate 3 is fixedly provided on the upper side of the prefabricated platform 2, and a connection through hole 31 is opened on the connection plate 3, which coincides with the casting through hole 21; four guide rods 4 facing the prefabricated pile 1 are installed on the inner wall of the connection through hole 31, and the guide rods 4 are parallel to the axis of the prefabricated pile 1, and the end edge of the guide rod 4 facing the prefabricated pile 1 is provided with a guide inclined surface 41; During the installation process of the precast platform 2 and the precast pile 1, the precast pile 1 is pre-buried below the ground, and the upper end of the precast pile 1 is ensured to be above the ground; subsequently, the precast platform 2 is hoisted above the precast pile 1, and the upper end of the precast pile 1 is inserted into the pouring through-hole 21 along the guiding inclined surface 41. At this time, there is a gap between the outer peripheral surface of the precast pile 1 and the inner wall of the pouring through-hole 21; finally, concrete is poured into this gap. After the concrete solidifies, the stable connection between the precast platform 2 and the precast pile 1 can be achieved, and the construction of the pile cap structure is completed.

[0034] Referring to Figure 2 and Figure 3 , four reinforcing bars 11 are embedded on the outer periphery of the upper end of the precast pile 1. A bent bar 12 is vertically fixed at the end of the reinforcing bar 11 away from the precast platform 2. The reinforcing bar 11 and the bent bar 12 are integrally bent, and both are made of steel; a receiving sinking groove 24 for placing the bent bar 12 is provided at the opening lower edge of the pouring through-hole 21; After the precast platform 2 and the precast pile 1 are inserted, the bent bar 12 is placed inside the receiving sinking groove 24. When the concrete fills the gap, the receiving sinking groove 24 is also filled, thereby covering the bent bar 12 and the reinforcing bar 11, so as to improve the assembly stability of the precast pile 1 and the precast platform 2.

[0035] Referring to Figure 2 and Figure 3 , a number of fixing holes 32 for the steel bars 22 on the precast platform 2 to pass through are provided on the connecting plate 3. A fixing sleeve 221 that abuts against the side of the connecting plate 3 away from the precast platform 2 is welded and fixed on the outer periphery of the steel bar 22, so as to realize the installation and fixation of the connecting plate 3; four traction rings 35 are hinged on the outer peripheral edge of the connecting plate 3. The lifting ropes on the crane can be directly inserted into the traction rings 35 for fastening, so as to facilitate the hoisting and movement of the precast platform 2; A placing sinking groove 23 for placing the connecting plate 3 is provided on the upper side surface of the precast platform 2. A receiving groove 231 for placing the traction ring 35 is provided on the side wall of the placing sinking groove 23. The upper side surface of the connecting plate 3 is flush with the outer side surface of the connecting plate 3; when the bridge pier is installed, the lower part of the bridge pier is fixedly installed on the upper side surface of the precast platform 2, and the exposed parts of the four steel bars 22 are embedded in the lower end of the bridge pier. Since the upper side surface of the connecting plate 3 is flush with the outer side surface of the connecting plate 3, it is convenient for the subsequent installation of the bridge pier on the upper side surface of the precast platform 2.

[0036] Referring to Figure 3 、 Figure 4 and Figure 5, four guiding blocks 33 are integrally formed on the inner wall of the connection through hole 31 of the connection plate 3, and guiding holes 331 for the guiding rods 4 to penetrate are formed in the guiding blocks 33; two limiting blocks 42 are relatively fixed on the outer periphery of the end of the guiding rod 4 away from the precast pile 1, and limiting sunk grooves 332 for the limiting blocks 42 to be inserted into are formed on the upper edge of the opening of the guiding hole 331. A locking member 5 for fixing the limiting block 42 in the limiting sunk groove 332 is provided above the connection plate 3; The locking member 5 includes a locking ring 51 rotatably arranged on the upper side surface of the precast table 2. A locking hole 511 coinciding with the connection through hole 31 is formed in the locking ring 51; four locking convex plates 52 are integrally formed on the inner wall of the locking hole 511, and the locking ring 51 can reciprocally rotate around the axis of the locking hole 511; the locking convex plate 52 can rotate with the locking ring 51 to a state where it abuts against the side surface of the limiting block 42 away from the guiding block 33, thereby fixing the installation state of the guiding rod 4.

[0037] Refer to Figure 6 , Figure 7 and Figure 8 , an anti - detachment block 43 is fixed on the outer periphery of the end of the guiding rod 4 away from the limiting block 42, and an anti - detachment sunk groove 333 for the anti - detachment block 43 to be inserted into is formed on the lower edge of the opening of the guiding hole 331; a guiding inclined surface 421 is arranged on the outer edge of the limiting block 42, and a locking notch 44 is formed on the outer periphery of the end of the guiding rod 4 away from the limiting block 42. A first inclined surface 441 is arranged on the opening edge of the locking notch 44; when the guiding rod 4 slides upward, the locking convex plate 52 can be in the same plane as the locking notch 44, and in this state, the locking convex plate 52 can rotate along the first inclined surface 441 with the locking ring 51 and be inserted into the locking notch 44; After the precast table 2 and the precast pile 1 are inserted and connected, the guiding rod 4 is lifted upward, and the guiding rod 4 is fixed by the locking convex plate 52 being inserted into the locking notch 44. Then, concrete is filled into the gap between the precast pile 1 and the inner wall of the pouring through hole 21. When the bridge pier is installed, the lower part of the bridge pier is fixedly installed on the upper side surface of the precast table 2, and the exposed parts of the four steel bars 22 and the upper ends of the guiding rods 4 in this state are all embedded in the lower end of the bridge pier, thereby enhancing the assembly stability between the bridge pier and the precast table 2.

[0038] The implementation principle of the embodiment of this application is: During installation, the guide rod 4 is in a downward movement state and fixed. First, the precast pile 1 is buried, and then the precast table 2 is lifted above the precast pile 1 by a crane. The upper end of the precast pile 1 is inserted into the pouring through-hole 21 through the guiding inclined surface 41 of the guide rod 4, and the bending rod 12 enters the accommodating sink 24. Then, the guide rod 4 is lifted upward, and the locking ring 51 is rotated so that the locking convex plate 52 is engaged into the locking notch 44 of the guide rod 4 to complete the fixation of the guide rod 4. Finally, concrete is poured into the gap between the precast pile 1 and the inner wall of the pouring through-hole 21, and the solidification of the concrete realizes the stable connection between the precast table 2 and the precast pile 1. When the bridge pier is installed, its lower part is fixed to the precast table 2, and the exposed parts of the four steel bars 22 and the upper end part of the guide rod 4 are embedded into the lower end of the bridge pier, so as to enhance the assembly stability of the bridge pier and the precast table 2.

[0039] Unless otherwise defined, the terms or scientific terms used in this application shall have the ordinary meanings understood by those of ordinary skill in the field to which this application belongs. The terms "first", "second", "third" and similar words used in the text of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. The words such as "a" or "an" do not indicate a quantity limitation, but indicate that there is at least one. The words such as "comprising" or "including" mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms such as "upper", "lower", "left" and "right" are only used to indicate the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0040] The embodiments of the specific implementation manners are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape and principle of this application shall be covered within the protection scope of this application.

Claims

1. A connecting structure between a precast pipe pile and a precast bearing platform of a bridge, comprising a precast pile (1) and a precast platform (2). A casting through hole (21) for the upper end of the precast pile (1) to be inserted is formed on the precast platform (2), and a plurality of steel bars (22) are uniformly fixed on the upper side surface of the precast platform (2) around the casting through hole (21); it is characterized in that, The upper side surface of the prefabrication table (2) is fixedly provided with an adapter plate (3), and an adapter through hole (31) coinciding with the casting through hole (21) is formed in the adapter plate (3); A plurality of guide rods (4) facing the precast pile (1) are installed on the inner wall of the adapter through hole (31). The guide rods (4) are parallel to the axis of the precast pile (1), and a guide inclined surface (41) is provided at the edge of the end of the guide rod (4) facing the precast pile (1). The upper end of the precast pile (1) can be inserted into the casting through hole (21) along the guide inclined surface (41). At this time, the outer peripheral surface of the precast pile (1) abuts against the outer peripheral surface of the guide rod (4).

2. The connecting structure between a precast pipe pile and a precast pile cap of a bridge according to claim 1, characterized in that, A plurality of reinforcing rods (11) are embedded on the outer periphery of the upper end of the precast pile (1). A bent rod (12) is vertically and fixedly provided at the end of the reinforcing rod (11) far from the prefabrication table (2). A receiving sinking groove (24) for placing the bent rod (12) is formed at the lower edge of the opening of the casting through hole (21).

3. The connecting structure between a precast pipe pile and a precast bearing platform according to claim 1, characterized in that, A plurality of fixing holes (32) for the steel bars (22) on the prefabrication table (2) to pass through are formed in the adapter plate (3). A fixing sleeve (221) abutting against the side surface of the adapter plate (3) far from the prefabrication table (2) is fixedly provided on the outer periphery of the steel bar (22).

4. A connecting structure of a precast pipe pile and a precast bearing platform of a bridge according to claim 2, characterized in that A plurality of traction pull rings (35) are hinged on the outer peripheral edge of the adapter plate (3).

5. The connecting structure between a precast pipe pile and a precast bearing platform of a bridge according to claim 1, characterized in that, A placing sinking groove (23) for placing the adapter plate (3) is formed on the upper side surface of the prefabrication table (2), and the upper side surface of the adapter plate (3) is flush with the outer side surface of the adapter plate (3).

6. The connecting structure between a precast pipe pile and a precast bearing platform according to claim 1, characterized in that, A plurality of guide blocks (33) are fixedly provided on the inner wall of the adapter plate (3) at the adapter through hole (31), and a guide hole (331) for the guide rod (4) to pass through is formed in the guide block (33); A limit block (42) is fixedly provided on the outer periphery of the end of the guide rod (4) far from the precast pile (1). A limit sinking groove (332) for the limit block (42) to be inserted into is formed at the upper edge of the opening of the guide hole (331). A locking member (5) for fixing the limit block (42) in the limit sinking groove (332) is provided above the adapter plate (3).

7. The connecting structure between a precast pipe pile and a precast bearing platform of a bridge according to claim 6, characterized in that, The locking member (5) includes a locking ring (51) rotatably provided on the upper side surface of the prefabrication table (2), and a locking hole (511) coinciding with the adapter through hole (31) is formed in the locking ring (51); A locking convex plate (52) is fixedly provided on the inner wall of the locking hole (511), and the locking ring (51) can rotate reciprocally around the axis of the locking hole (511); The locking convex plate (52) can rotate with the locking ring (51) to a state where it abuts against the side surface of the limit block (42) far from the guide block (33).

8. A connecting structure between a precast pipe pile and a precast bearing platform of a bridge according to claim 7, characterized in that, A guiding inclined surface (421) is provided on the outer edge of the limit block (42), and a locking notch (44) is formed on the outer periphery of the end of the guide rod (4) far from the limit block (42); The locking convex plate (52) can be in the same plane as the locking notch (44) when the guide rod (4) slides upward, and in this state, the locking convex plate (52) can rotate with the locking ring (51) into the locking notch (44).

9. The connecting structure of a precast pipe pile and a precast bearing platform of a bridge according to claim 8, characterized in that, A first inclined surface (441) is provided on the opening edge of the locking notch (44) of the guide rod (4).

10. A connecting structure between a precast pipe pile and a precast bearing platform of a bridge according to claim 8, characterized in that, An anti - detachment block (43) is fixedly arranged on the outer periphery of the end of the guide rod (4) far away from the limit block (42), and an anti - detachment sinking groove (333) for the anti - detachment block (43) to be clamped into is formed in the lower edge of the opening of the guide hole (331).

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