A connecting structure for prefabricating and assembling tie beams and piers

Abstract

The application relates to a connecting structure for prefabricated assembling tie beams and piers, comprising a concrete pier, a reinforcing steel connecting platform and a pier hollow steel column being embedded in the side wall of the concrete pier, the reinforcing steel connecting platform and the pier hollow steel column being arranged in the height direction of the concrete pier; a prefabricated concrete tie beam, a tie beam embedded metal gasket and a tie beam embedded hollow steel column being embedded in the end of the prefabricated concrete tie beam, a metal bellows being embedded between the tie beam embedded hollow steel column and the tie beam embedded metal gasket; a connecting assembly, the connecting assembly comprising a connecting main reinforcing steel bar penetrating into the metal bellows and fastening the reinforcing steel connecting platform, the tie beam embedded metal gasket, the tie beam embedded hollow steel column and the pier hollow steel column together, the metal bellows being filled with cement-based grouting material. The connecting structure greatly improves the shearing bearing capacity of the joint, greatly improves the strength of the prefabricated assembling pier and reaches the strength of the cast-in-situ pier.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of prefabricated and assembled bridge piers, in particular to a connecting structure for prefabricated and assembled tie beams and pier columns. BACKGROUND

[0002] The tie beam refers to a beam serving as a pull rod, which is arranged between two piles or pier columns to connect the two piles or pier columns into a whole to improve the force bearing structure of the piles or pier columns and to strengthen the overall rigidity of the piles or pier columns. The tie beam arranged between two pier columns is an inter-pier tie beam, also known as a waist tie beam.

[0003] At present, the inter-pier tie beam is mainly cast in situ by manually binding steel bars and pouring concrete on site with a support form, which has high safety performance and good integrity, but a large number of support forms need to be erected for each step during construction, the appearance quality is difficult to control, the construction period is long, and the urban traffic is greatly affected.

[0004] Moreover, since the tie beam is located between two piles or pier columns and has a special structure, the support form of the tie beam is difficult to disassemble after the construction is completed, is prone to deformation, cannot be recycled for secondary use, and leads to a significant increase in the construction period and construction cost. SUMMARY

[0005] The embodiment of the application provides a connecting structure for prefabricated and assembled tie beams and pier columns to solve the problem of the support form of the cast-in-place tie beam in the prior art, which is difficult to disassemble after the construction is completed, is prone to deformation, cannot be recycled for secondary use, and leads to a significant increase in the construction period and construction cost.

[0006] The embodiment of the application provides a connecting structure for prefabricated and assembled tie beams and pier columns, which comprises:

[0007] A concrete pier column, a steel bar connecting platform and a pier column hollow steel column are pre-buried on the side wall of the concrete pier column, and the steel bar connecting platform and the pier column hollow steel column are arranged at intervals along the height direction of the concrete pier column;

[0008] A prefabricated concrete tie beam, a tie beam pre-buried metal pad and a tie beam pre-buried hollow steel column are pre-buried at the end of the prefabricated concrete tie beam, and a metal bellows is pre-buried between the tie beam pre-buried hollow steel column and the tie beam pre-buried metal pad;

[0009] A connecting assembly, which comprises a connecting main bar penetrating into the metal bellows and fastening the steel bar connecting platform, the tie beam pre-buried metal pad, the tie beam pre-buried hollow steel column and the pier column hollow steel column together, and the metal bellows is filled with cement-based grouting material.

[0010] In some embodiments: one end of the tie beam embedded hollow steel column extends into the pier column hollow steel column, and the pier column hollow steel column and the tie beam embedded hollow steel column are provided with through holes that are in communication with each other in the overlapping area, and one end of the connecting main reinforcement is inserted into the through holes of the pier column hollow steel column and the tie beam embedded hollow steel column.

[0011] In some embodiments: one end of the tie beam embedded hollow steel column is partially exposed to the end of the prefabricated concrete tie beam, and the other end of the tie beam embedded hollow steel column is embedded in the prefabricated concrete tie beam.

[0012] The other end of the tie beam embedded hollow steel column is embedded in the prefabricated concrete tie beam, and the other end of the tie beam embedded hollow steel column is connected with the tie beam connecting reinforcement embedded in the prefabricated concrete tie beam.

[0013] In some embodiments: the pier column hollow steel column is exposed to the outside of the concrete pier column, and a second metal plate is welded to the side of the pier column hollow steel column close to the concrete pier column, and a second shear nail and a bent reinforcement embedded in the concrete pier column are welded to the side of the second metal plate away from the pier column hollow steel column.

[0014] In some embodiments: the steel reinforcement connecting platform is exposed to the outside of the concrete pier column, and a through hole for inserting the connecting main reinforcement is formed on the steel reinforcement connecting platform, and a first metal plate is welded to the side of the steel reinforcement connecting platform close to the concrete pier column, and a first shear nail embedded in the concrete pier column is welded to the side of the first metal plate away from the steel reinforcement connecting platform.

[0015] In some embodiments: the steel reinforcement connecting platform is located above the pier column hollow steel column, the tie beam embedded metal pad is located at the top of the prefabricated concrete tie beam, and the tie beam embedded hollow steel column is located at the bottom of the prefabricated concrete tie beam.

[0016] In some embodiments: a third shear nail embedded in the prefabricated concrete tie beam is welded to the tie beam embedded metal pad, and a through hole for inserting the connecting main reinforcement is formed on the tie beam embedded metal pad.

[0017] In some embodiments: the steel reinforcement connecting platform and the tie beam embedded metal pad extend in the longitudinal bridge direction, the steel reinforcement connecting platform is located at the top of the tie beam embedded metal pad, and a plurality of through holes are formed on the steel reinforcement connecting platform and the tie beam embedded metal pad, and the through holes are arranged in sequence and spaced apart in the longitudinal bridge direction.

[0018] In some embodiments: the plurality of tie beam embedded hollow steel columns and pier column embedded hollow steel columns are sequentially and spacedly arranged along the longitudinal bridge direction, and the plurality of metal bellows are sequentially and spacedly arranged along the longitudinal bridge direction and respectively located at the top of the plurality of tie beam embedded hollow steel columns.

[0019] In some embodiments: the connecting main reinforcement is high-strength steel reinforcement and / or prestressed steel strand, both ends of the high-strength steel reinforcement are threadedly connected with locking nuts, and both ends of the prestressed steel strand are connected with tapered clamping pieces.

[0020] The technical scheme provided by the application has the following beneficial effects:

[0021] The connecting structure for prefabricated and assembled tie beam and pier column provided by the embodiments of the application is provided with a concrete pier column, a steel reinforcement connecting platform and a pier column hollow steel column are embedded on the side wall of the concrete pier column, and the steel reinforcement connecting platform and the pier column hollow steel column are spacedly arranged along the height direction of the concrete pier column; a prefabricated concrete tie beam is embedded with a tie beam embedded metal gasket and a tie beam embedded hollow steel column at the end thereof, and a metal bellows is embedded between the tie beam embedded hollow steel column and the tie beam embedded metal gasket; a connecting assembly includes a connecting main reinforcement which is inserted into the metal bellows and fastens the steel reinforcement connecting platform, the tie beam embedded metal gasket, the tie beam embedded hollow steel column and the pier column hollow steel column together, and the metal bellows is filled with cement-based grouting material.

[0022] Therefore, the prefabricated concrete tie beam of the connecting structure for prefabricated and assembled tie beam and pier column of the application adopts a prefabricated forming structure, the concrete pier column can adopt a prefabricated forming structure or a cast-in-situ forming structure, and the prefabricated concrete tie beam and the concrete pier column can be quickly and integrally assembled and connected at the construction site. The tie beam embedded metal gasket and the tie beam embedded hollow steel column are embedded at the end of the prefabricated concrete tie beam, and the steel reinforcement connecting platform and the pier column hollow steel column are embedded on the side wall of the concrete pier column, and the tie beam embedded hollow steel column and the pier column hollow steel column can be quickly and conveniently assembled and positioned after being connected. The steel reinforcement connecting platform, the tie beam embedded metal gasket, the tie beam embedded hollow steel column and the pier column hollow steel column are fastened together by the connecting main reinforcement, and the metal bellows is filled with cement-based grouting material, which greatly improves the shear bearing capacity of the splicing part, greatly improves the strength of the prefabricated and assembled pier, and reaches the strength of the cast-in-situ pier.

[0023] The prefabricated concrete tie beam of the application is arranged in a direction perpendicular to the pier column, so it is difficult to directly use a metal bellows to connect the prefabricated concrete tie beam and the pier column. The application embeds a steel connecting platform on the side wall of the concrete pier column and a pier hollow steel column, embeds a tie beam embedded metal gasket and a tie beam embedded hollow steel column at the end of the prefabricated concrete tie beam, changes the direction of force conduction from one-way conduction to vertical conduction, and realizes effective connection of the prefabricated concrete tie beam and the pier column through the vertical metal bellows. The application range of the metal bellows is expanded to the pier-tie beam connection, which has broad application prospects in the field of bridge industrial construction. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 It is a structural front view of the embodiment of the application.

[0026] Figure 2 It is a structural left view of the embodiment of the application.

[0027] Figure 3 It is a structural top view of the embodiment of the application.

[0028] Figure 4 It is a structural front view of the concrete pier column of the embodiment of the application.

[0029] Figure 5 It is a structural front view of the prefabricated concrete tie beam of the embodiment of the application.

[0030] LIST OF REFERENCE NUMERALS

[0031] 1, concrete pier column; 2, prefabricated concrete tie beam; 3, connecting assembly; 11, steel connecting platform; 12, pier hollow steel column; 13, through hole; 14, first metal plate; 15, first shear pin; 16, second metal plate; 17, second shear pin; 18, bent steel bar; 21, tie beam embedded metal gasket; 22, tie beam embedded hollow steel column; 23, metal bellows; 24, third shear pin; 25, tie beam connecting steel bar; 31, connecting main reinforcement. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] This application provides a connection structure for prefabricated assembled tie beams and piers, which can solve the problem in related technologies that the support formwork of cast-in-place tie beams is difficult to disassemble after construction, is easily deformed, and cannot be recycled and reused, resulting in a significant increase in construction period and construction cost.

[0034] See Figures 1 to 3 As shown in the figure, this application provides a connection structure for prefabricated assembled tie beams and piers, including:

[0035] The concrete pier 1 can be a cast-in-place structure on construction site or a prefabricated structure in a prefabrication plant. The cross-section of the concrete pier 1 is preferably, but limited to, a rectangular structure. The concrete pier 1 can be a hollow pier or a solid pier. A steel reinforcement connection platform 11 and a hollow steel column 12 are pre-embedded in the side wall of the concrete pier 1. The steel reinforcement connection platform 11 and the hollow steel column 12 are spaced apart along the height direction of the concrete pier 1.

[0036] The precast concrete tie beam 2 is precast in a prefabrication plant and can be either a hollow or solid structure. The ends of the precast concrete tie beam 2 are pre-embedded with tie beam embedded metal gaskets 21 for connecting the reinforcing bar connection platform 11, and tie beam embedded hollow steel columns 22 for connecting the hollow steel columns 12 of the pier. A corrugated metal pipe 23 is pre-embedded between the tie beam embedded hollow steel columns 22 and the tie beam embedded metal gaskets 21.

[0037] The connecting component 3 includes a connecting main bar 31 that passes through the corrugated metal pipe 23 and fastens the steel bar connecting platform 11, the pre-embedded metal gasket 21 of the tie beam, the pre-embedded hollow steel column 22 of the tie beam and the hollow steel column 12 of the pier together. The corrugated metal pipe 23 is filled with cement-based grout that integrates the connecting main bar 31 and the corrugated metal pipe 23.

[0038] In this embodiment, the precast concrete tie beam 2, used for the connection structure between the precast tie beam and the pier column, adopts a precast structure. The concrete pier column 1 can adopt a precast structure or a cast-in-place structure, which facilitates the rapid assembly and connection of the precast concrete tie beam 2 and the concrete pier column 1 into a single unit on the construction site. A tie beam embedded metal gasket 21 and a tie beam embedded hollow steel column 22 are pre-embedded at the end of the precast concrete tie beam 2. A steel reinforcement connection platform 11 and a pier column hollow steel column 12 are pre-embedded on the side wall of the concrete pier column 1. After the tie beam embedded hollow steel column 22 and the pier column hollow steel column 12 are connected, the assembly and positioning of the tie beam and pier column can be completed quickly and conveniently.

[0039] The steel reinforcement connection platform 11, the pre-embedded metal gasket 21 of the tie beam, the pre-embedded hollow steel column 22 of the tie beam, and the hollow steel column 12 of the pier are fastened together by connecting main reinforcement bars 31, and cement-based grouting material is filled in the corrugated metal pipe 23. This greatly improves the shear bearing capacity at the splice between the concrete pier column 1 and the precast concrete tie beam 2, significantly increasing the strength of the precast assembled pier to the strength of a cast-in-place pier. This reduces the investment in support formwork during construction and effectively improves the bridge construction quality without changing the original structural design dimensions or the original steel reinforcement structure.

[0040] In some alternative embodiments: see Figures 1 to 5 As shown in the figure, this application embodiment provides a connection structure for prefabricated assembly of tie beams and pier columns. One end of the hollow steel column 22 embedded in the tie beam of this connection structure extends into the hollow steel column 12 of the pier column. Through holes (not shown in the figure) are also provided in the overlapping areas of the hollow steel column 12 of the pier column and the hollow steel column 22 of the tie beam. One end of the connecting main reinforcement 31 passes through the through holes of the hollow steel column 12 of the pier column and the hollow steel column 22 of the tie beam, thus connecting the hollow steel column 12 of the pier column and the hollow steel column 22 of the tie beam together.

[0041] One end of the pre-embedded hollow steel column 22 is exposed at the end of the precast concrete tie beam 2, and this end is flush with or located inside the end face of the precast concrete tie beam 2. The end face of the pre-embedded hollow steel column 22 is in close contact with the side wall of the concrete pier column 1. The other end of the pre-embedded hollow steel column 22 is embedded in the precast concrete tie beam 2, and is connected to the tie beam connecting steel bar 25 embedded in the precast concrete tie beam 2 to enhance the connection strength between the pre-embedded hollow steel column 22 and the precast concrete tie beam 2.

[0042] In some alternative embodiments: see Figures 1 to 5As shown in the embodiment of this application, a connection structure for prefabricated assembled tie beams and piers is provided. The hollow steel column 12 of the pier is exposed to the outside of the concrete pier 1. A second metal plate 16 is welded to the side of the hollow steel column 12 closest to the concrete pier 1. A second shear stud 17 and a bent reinforcing bar 18, pre-embedded within the concrete pier 1, are welded to the side of the second metal plate 16 away from the hollow steel column 12. The second shear stud 17 and the bent reinforcing bar 18 are used to enhance the connection strength between the hollow steel column 12 and the concrete pier 1. Multiple hollow steel columns 12 are provided, and these columns are arranged sequentially and at intervals along the longitudinal direction of the bridge on the second metal plate 16.

[0043] A reinforcing bar connection platform 11 is exposed on the outside of the concrete pier column 1. Through holes 13 are provided on the reinforcing bar connection platform 11 for inserting connecting main reinforcing bars 31. A first metal plate 14 is welded to the side of the reinforcing bar connection platform 11 closest to the concrete pier column 1. A first shear stud 15, pre-embedded in the concrete pier column 1, is welded to the side of the first metal plate 14 furthest from the reinforcing bar connection platform 11. The first shear stud 15 is used to enhance the connection strength between the reinforcing bar connection platform 11 and the concrete pier column 1. The length of the reinforcing bar connection platform 11 is the same as the thickness of the concrete pier column 1 along the longitudinal direction of the bridge. Multiple through holes 13 are provided on the reinforcing bar connection platform 11, and these through holes 13 are arranged sequentially at intervals along the longitudinal direction of the bridge.

[0044] In some alternative embodiments: see Figures 1 to 5 As shown in the embodiment of this application, a connection structure for precast assembled tie beams and pier columns is provided. The steel reinforcement connection platform 11 of this connection structure is located above the hollow steel column 12 of the pier column. The pre-embedded metal gasket 21 of the tie beam is located at the top of the precast concrete tie beam 2, and the pre-embedded hollow steel column 22 of the tie beam is located at the bottom of the precast concrete tie beam 2. The steel reinforcement connection platform 11 is connected to the pre-embedded metal gasket 21 of the tie beam via connecting main reinforcement bars 31. The hollow steel column 12 of the pier column and the pre-embedded hollow steel column 22 of the tie beam are interlocked and then connected via connecting main reinforcement bars 31.

[0045] In some alternative embodiments: see Figures 1 to 5 As shown in the embodiment of this application, a connection structure for prefabricated assembly of tie beams and piers is provided. The tie beam embedded metal gasket 21 of the connection structure is welded with a third shear nail 24 embedded in the prefabricated concrete tie beam 2. The tie beam embedded metal gasket 21 is provided with through holes 13 for inserting the connecting main reinforcement 31. The length of the tie beam embedded metal gasket 21 is the same as the thickness of the concrete pier 1 along the longitudinal direction of the bridge. There are multiple through holes 13 on the tie beam embedded metal gasket 21, and the multiple through holes 13 are arranged sequentially and at intervals along the longitudinal direction of the bridge on the tie beam embedded metal gasket 21.

[0046] The steel bar connection platform 11 and the pre-embedded metal gasket 21 of the tie beam extend along the longitudinal direction of the bridge. The steel bar connection platform 11 is located on top of the pre-embedded metal gasket 21 of the tie beam. Both the steel bar connection platform 11 and the pre-embedded metal gasket 21 of the tie beam have multiple through holes 13 arranged sequentially and at intervals along the longitudinal direction of the bridge. The steel bar connection platform 11 and the pre-embedded metal gasket 21 of the tie beam are connected together by inserting the main reinforcing bar 31 through the through holes 13.

[0047] Multiple hollow steel columns 22 embedded in the tie beams and hollow steel columns 12 of the piers are provided, and they correspond one-to-one. These multiple hollow steel columns 22 and hollow steel columns 12 are arranged alternately along the longitudinal direction of the bridge. Multiple corrugated metal pipes 23 are provided, arranged alternately along the longitudinal direction of the bridge and located at the top of the multiple hollow steel columns 22 embedded in the tie beams. The connecting main reinforcement 31 is preferably, but not limited to, high-strength steel bars or prestressed steel strands. Locking nuts are threaded to both ends of the high-strength steel bars, and tapered clamps are connected to both ends of the prestressed steel strands.

[0048] Working principle

[0049] This application provides a connection structure for prefabricated assembled tie beams and piers. The connection structure includes a concrete pier 1, with a steel reinforcement connection platform 11 and a hollow steel column 12 embedded in the side wall of the concrete pier 1. The steel reinforcement connection platform 11 and the hollow steel column 12 are spaced apart along the height direction of the concrete pier 1. A prefabricated concrete tie beam 2 has a tie beam embedded metal gasket 21 and a tie beam embedded hollow steel column 22 embedded at its end. A corrugated metal pipe 23 is embedded between the tie beam embedded hollow steel column 22 and the tie beam embedded metal gasket 21. A connection assembly 3 includes a connecting main reinforcement 31 that passes through the corrugated metal pipe 23 and fastens the steel reinforcement connection platform 11, the tie beam embedded metal gasket 21, the tie beam embedded hollow steel column 22, and the pier hollow steel column 12 together. The corrugated metal pipe 23 is filled with cement-based grout.

[0050] Therefore, the precast concrete tie beam 2 used in this application for the connection structure between the precast tie beam and the pier column adopts a precast structure, and the concrete pier column 1 can adopt a precast structure or a cast-in-place structure, which facilitates the rapid assembly and connection of the precast concrete tie beam 2 and the concrete pier column 1 into a whole on the construction site. A tie beam embedded metal gasket 21 and a tie beam embedded hollow steel column 22 are pre-embedded at the end of the precast concrete tie beam 2, and a steel reinforcement connection platform 11 and a pier column hollow steel column 12 are pre-embedded on the side wall of the concrete pier column 1. After the tie beam embedded hollow steel column 22 and the pier column hollow steel column 12 are connected, the assembly and positioning of the tie beam and pier column can be completed quickly and conveniently. The steel reinforcement connection platform 11, the pre-embedded metal gasket 21 of the tie beam, the pre-embedded hollow steel column 22 of the tie beam and the hollow steel column 12 of the pier are fastened together by the connecting main reinforcement 31, and the corrugated metal pipe 23 is filled with cement-based grout, which greatly improves the shear bearing capacity of the splice and greatly improves the strength of the precast and assembled bridge pier, reaching the strength of the cast-in-place bridge pier.

[0051] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0052] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0053] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A connecting structure for prefabricating a splice beam and a pier column, characterized by, The utility model relates to a connecting structure for prefabricated and assembled tie beam and pier column, which comprises the following components: a concrete pier column (1) having a steel bar connecting platform (11) and a pier column hollow steel column (12) embedded in the side wall of the concrete pier column (1), wherein the steel bar connecting platform (11) and the pier column hollow steel column (12) are arranged at intervals along the height direction of the concrete pier column (1); a prefabricated concrete tie beam (2) having a tie beam embedded metal gasket (21) and a tie beam embedded hollow steel column (22) embedded at the end of the prefabricated concrete tie beam (2), wherein a metal bellows (23) is embedded between the tie beam embedded metal gasket (21) and the tie beam embedded hollow steel column (22); a connecting assembly (3) comprising a connecting main reinforcement (31) penetrating into the metal bellows (23) and fastening the steel bar connecting platform (11), the tie beam embedded metal gasket (21), the tie beam embedded hollow steel column (22) and the pier column hollow steel column (12) together, wherein the metal bellows (23) is filled with cement-based grouting material; one end of the tie beam embedded hollow steel column (22) extends into the pier column hollow steel column (12), and the pier column hollow steel column (12) and the tie beam embedded hollow steel column (22) are further provided with through holes communicating with each other in the overlapping area, and one end of the connecting main reinforcement (31) penetrates into the through holes of the pier column hollow steel column (12) and the tie beam embedded hollow steel column (22); the pier column hollow steel column (12) is exposed outside the concrete pier column (1), and a second metal plate (16) is welded to the side of the pier column hollow steel column (12) close to the concrete pier column (1), and a second shear nail (17) and a bent reinforcement (18) embedded in the concrete pier column (1) are welded to the side of the second metal plate (16) away from the pier column hollow steel column (12); the steel bar connecting platform (11) is exposed outside the concrete pier column (1), and a through hole (13) for penetrating the connecting main reinforcement (31) is formed in the steel bar connecting platform (11), and a first metal plate (14) is welded to the side of the steel bar connecting platform (11) close to the concrete pier column (1), and a first shear nail (15) embedded in the concrete pier column (1) is welded to the side of the first metal plate (14) away from the steel bar connecting platform (11); the steel bar connecting platform (11) is located above the pier column hollow steel column (12), the tie beam embedded metal gasket (21) is located at the top of the prefabricated concrete tie beam (2), and the tie beam embedded hollow steel column (22) is located at the bottom of the prefabricated concrete tie beam (2).

2. The connecting structure for prefabricated and assembled tie beam and pier column according to claim 1, wherein: one end of the tie beam embedded hollow steel column (22) is partially exposed at the end of the prefabricated concrete tie beam (2), and the end of the tie beam embedded hollow steel column (22) is flush with or located inside the end surface of the prefabricated concrete tie beam (2). The other end of the tie beam embedded hollow steel column (22) is embedded in the prefabricated concrete tie beam (2), and the other end of the tie beam embedded hollow steel column (22) is connected with the tie beam connecting steel bar (25) embedded in the prefabricated concrete tie beam (2).

3. The connecting structure for prefabricated and assembled tie beam and pier column according to claim 1, characterized in that: The tie beam embedded metal gasket (21) is welded with the third shear pin (24) embedded in the prefabricated concrete tie beam (2), and the tie beam embedded metal gasket (21) is provided with a through hole (13) for penetrating the connecting main reinforcement (31).

4. The connecting structure for prefabricated and assembled tie beam and pier column according to claim 1, characterized in that: The steel bar connecting platform (11) and the tie beam embedded metal gasket (21) extend along the longitudinal bridge direction, the steel bar connecting platform (11) is located at the top of the tie beam embedded metal gasket (21), and the steel bar connecting platform (11) and the tie beam embedded metal gasket (21) are both provided with a plurality of through holes (13) arranged along the longitudinal bridge direction.

5. The connecting structure for prefabricated and assembled tie beam and pier column according to claim 1 or 4, characterized in that: The tie beam embedded hollow steel column (22) and the pier hollow steel column (12) are both provided with a plurality of and one-to-one correspondence, a plurality of the tie beam embedded hollow steel column (22) and the pier hollow steel column (12) are arranged along the longitudinal bridge direction, a plurality of the metal bellows (23) are arranged along the longitudinal bridge direction and are respectively located at the top of a plurality of the tie beam embedded hollow steel column (22).

6. The connecting structure for prefabricated and assembled tie beam and pier column according to claim 1, characterized in that: The connecting main reinforcement (31) is high-strength steel and / or prestressed steel wire, both ends of the high-strength steel are threadedly connected with locking nuts, and both ends of the prestressed steel wire are connected with conical clamps.

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