Precast concrete column and connection structure between precast concrete column and embedded anchor plate

Abstract

A precast concrete column that is conducive to connection, includes a concrete column body with main reinforcement arranged inside, a first end plate is arranged at one end of the concrete column body, and a second end plate is arranged at the other end; it is characterized in that: the concrete column body is covered with a hoop, and at least one surface of the hoop is welded with a connecting plate for connecting with the beam; the first end plate includes a first end plate body, the first end plate body is provided with a plurality of first locking reinforcement holes and a polygonal through hole located in the middle, and the inner hole walls of each side of the polygonal through hole are respectively formed with transversely extending first workpiece slots, and each first workpiece slot is straightly connected with the workpiece insertion hole; the second end plate includes a second end plate body, the second end plate body is provided with a plurality of second locking reinforcement holes, a polygonal connecting plate is fixed on the end face of the second end plate body to form a boss, and the outer peripheral walls of each side of the polygonal connecting plate are formed with transversely extending second workpiece slots; the precast concrete column can quickly and firmly connect between the column and the beam, and between the columns.

Description

Technical Field

[0001] The present invention belongs to the technical field of assembled structures in various building structural systems, and in particular relates to a prefabricated concrete column that is easy to connect. The present invention also relates to a connection structure between a concrete column and a pre-buried anchor plate. Background Art

[0002] Concrete columns generally adopt a cast-in-place structure, that is, first tie and weld the steel bars, and then support the formwork and pour the concrete. This solution requires a lot of manpower, low work efficiency, serious safety hazards in high-altitude operations, and it is difficult to ensure the quality of construction. In addition, the vertical connection of prefabricated columns currently has various problems such as safety hazards and inability to detect. The prefabricated concrete columns currently on the market have large cross-sections and heavy weights, which are inconvenient to transport and construct. How to efficiently and quickly realize the factory production of concrete columns, improve the performance of columns, reduce weight, and realize efficient, fast, and safe mechanical connections between columns and columns, and between columns and beams has become a top priority for the prefabricated housing industry to improve assembly efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a precast concrete column that is easy to connect in response to the above-mentioned existing technical status. The precast concrete column can quickly and firmly connect the column to the beam and between the columns. At the same time, the end plate used in the concrete column has the advantages of convenient processing, high efficiency, low cost, and great material saving, making industrial mass production of the end plate possible.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a precast concrete column that is conducive to connection, comprising a concrete column body with main reinforcement inside, a first end plate at one end of the concrete column body, and a second end plate at the other end of the concrete column; it is characterized in that: the concrete column is covered with a hoop, the hoop is annular, and at least one surface of the hoop is welded with a connecting plate for connecting to the beam; the first end plate comprises a first end plate body, and the end surface of the first end plate body is provided with a plurality of first locking reinforcement holes for connecting to the main reinforcement; the middle part of the first end plate body has a polygonal through hole running longitudinally, and the inner hole walls of each side of the polygonal through hole are respectively formed with first workpiece slots extending laterally, and each first workpiece slot is connected to a first workpiece slot that is laterally arranged in the end plate body and passes through the first end plate body The workpiece insertion hole on the outer wall of the body is straight through; the second end plate includes a second end plate body, and a plurality of second locking rib holes for connecting the main ribs are opened on the second end plate body. A polygonal connecting plate is fixed on the end face of the second end plate body to form a boss, and a second workpiece slot extending laterally is formed on the outer peripheral wall of each side of the polygonal connecting plate; the first workpiece slot, the second workpiece slot and the polygonal through-hole are formed by longitudinally cutting the extension sections of the workpiece insertion holes located in the middle of the first end plate body, and the cut complete block is used as the polygonal connecting plate; when the first end plate and the second end plate are spliced ​​and the polygonal connecting plate is inserted into the polygonal through-hole, the first workpiece slot and the second workpiece slot are butt-jointed to form a complete extension section of the workpiece insertion hole.

[0005] As a further improvement, an upper limit plate and a lower limit plate are welded on the surface of the hoop connected to the beam at intervals, the upper limit plate is used to contact the lower surface of the upper top surface of the beam, and the lower limit plate is used to contact the lower surface of the lower bottom surface of the beam. The upper and lower limit plates play a role in constraining the installation position of the beam, which is conducive to the connection with the beam. The upper and lower limit plates also play a role in blocking welding slag.

[0006] As an option, all the main bars are non-prestressed steel bars, or all the main bars are prestressed steel bars. Preferably, the main bars have both non-prestressed steel bars and prestressed steel bars, which can improve the performance of the column, reduce weight, simplify the production process, and reduce costs. It can be selected according to design requirements. The prestressed steel bars can be prestressed steel bars, prestressed steel strands, prestressed threaded steel bars, etc.

[0007] As a further improvement, the hoop is provided with a plurality of steel partitions or a plurality of reinforcing ribs for reinforcement, and the steel partitions or reinforcing ribs are connected to the inner wall of the hoop. The hoop can be cast together with the concrete column and firmly combined with the concrete column.

[0008] In order to facilitate the connection of the two end plate bodies with the tensioning plate or the anchoring plate, the first end plate body is provided with a plurality of first threaded holes which are longitudinally penetrated and used for connecting with the tensioning plate, and the second end plate body is provided with a plurality of second threaded holes which are longitudinally penetrated and used for connecting with the anchoring plate. Of course, other existing connection methods can also be adopted, such as snap connection by using a clamp;

[0009] As an option, the first reinforcement locking hole and the second reinforcement locking hole are both tapered holes with gradually increasing diameters from the inside to the outside; or, the first reinforcement locking hole and the second reinforcement locking hole are both 8-shaped holes with a large hole portion and a small hole portion, and the large hole portion is a threaded hole to form the first threaded hole or the second threaded hole; or, the first reinforcement locking hole and the second reinforcement locking hole have both tapered holes and 8-shaped holes. The tapered hole is suitable for locking and connecting the steel strands used as prestressed main reinforcements, and the 8-shaped hole is suitable for connecting non-prestressed steel bars used as non-prestressed main reinforcements, and part of the 8-shaped hole is a threaded hole, which is suitable for connecting with a tensioning plate or an anchor plate.

[0010] Preferably, the first end plate body and the second end plate body are rectangular, and the polygonal perforations are rectangular holes; or, the first end plate body and the second end plate body are hexagonal, and the polygonal perforations are hexagonal holes. The aforementioned end plate structure is used for rectangular piles, and of course, other polygons, such as pentagons or hexagons, etc., can also be used.

[0011] Preferably, the polygonal connecting plate is provided with a plurality of threaded connection holes, the second end plate body is provided with a plurality of through holes matching the threaded connection holes, and bolts are passed through the through holes from the back of the second end plate body and are threadedly connected to the polygonal connecting plate. In this way, the polygonal connecting plate can be fixed to the end plate by threaded connection, which is convenient for processing. Of course, it can also be fixed by welding.

[0012] The second technical problem to be solved by the present invention is to provide a connection structure between a precast concrete column and a pre-embedded anchor plate in view of the above-mentioned existing technical status, wherein the connection structure enables the precast concrete column to be quickly and firmly connected to the pre-embedded anchor plate.

[0013] The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: a connection structure of the precast concrete column and the embedded anchor plate adopts the aforementioned structure, including an embedded anchor plate for being buried below the structural surface, characterized in that: the embedded anchor plate is fixed on the first end plate body of the concrete column at the lowermost end, the polygonal connecting plate is fixed on the top surface of the embedded anchor plate, the polygonal connecting plate is inserted into the polygonal through-hole of the first end plate body, the first workpiece slot and the second workpiece slot are connected to re-form a complete extension section of the workpiece insertion hole; a pin is inserted into each workpiece insertion hole, and the pin is simultaneously located in the first workpiece slot and the second workpiece slot to complete the connection and fixation of the first end plate body and the embedded anchor plate.

[0014] When connecting, the first end plate and the embedded anchor plate are aligned and spliced ​​together, the polygonal connecting plate fixed on the embedded anchor plate is inserted into the polygonal through-hole of the first end plate body, and finally the pin is inserted from the workpiece insertion hole and simultaneously enters the first workpiece slot and the second workpiece slot to complete the pile connection. The connection between the concrete column and the embedded anchor plate is safer and more reliable, and the operation is simple and quick.

[0015] The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: a connection structure of the precast concrete column and the embedded anchor plate as mentioned above, including an embedded anchor plate for being buried below the structural surface, characterized in that: the embedded anchor plate is fixed on the first end plate body of the lowermost concrete column, a grouting sleeve is embedded at one end of the concrete column, and embedded steel bars are arranged in the grouting sleeve, and the embedded steel bars are fixed on the embedded anchor plate after passing downward out of the end plate.

[0016] Pour concrete into the grouting sleeve to ensure a firm bond between the concrete column, embedded anchor plate, embedded steel bars and structural surface.

[0017] In order to ensure that the embedded anchor plate is more firmly combined with the structural surface, the middle part of the bottom surface of the embedded anchor plate is provided with a shear key extending downward, and a plurality of anchoring steel bars are inserted on the embedded anchor plate.

[0018] Compared with the prior art, the advantages of the present invention are as follows: a hoop is coated on the middle section of the concrete column, the hoop is annular, and a connecting plate for connecting to the beam is welded on at least one surface of the hoop. When connected, the connecting plate and the middle wall of the I-beam are connected by high-strength bolts; the middle part of the first end plate body is a polygonal through-hole running longitudinally, and such a setting is conducive to forming the polygonal through-hole by cutting, and the complete block (polygonal connecting plate) cut from the first end plate body is used as the boss of the second end plate body, which makes the block cut from the first end plate body turn waste into treasure, and does not need to use a very thick steel plate to mill out the boss on the second end plate body, thereby greatly saving production raw materials and production manufacturing costs; by longitudinally The extension sections of each workpiece insertion hole located in the middle of the first end plate body are cut and divided into two halves, so that the first workpiece slot, the second workpiece slot, the polygonal through-hole and the connecting plate used as the boss of the second end plate body can be formed at the same time, without the need to adopt additional processes to process the workpiece slot and the boss of the second end plate body, so the production efficiency is greatly improved, and large-scale industrial mass production can be achieved; because the extension section of the workpiece insertion hole is divided into two after being longitudinally cut to generate the first workpiece slot and the second workpiece slot, therefore, when the polygonal connecting plate is inserted into the polygonal through-hole, the first workpiece slot and the second workpiece slot are just matched after docking to form a complete extension section of the workpiece insertion hole, and the matching is more precise, which is beneficial to the connection between the columns. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a front view schematic diagram of the concrete column embodiment of the present invention combined with a beam;

[0020] Figure 2 for Figure 1 AA sectional view (the inside of the hoop is a partition);

[0021] Figure 3 for Figure 2 BB section view;

[0022] Figure 4 for Figure 1 AA section view (there are reinforcing ribs inside the hoop);

[0023] Figure 5 for Figure 4 CC section view;

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the end plate structure in the concrete column embodiment of the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the first end plate body formed after the polygonal connecting plate is cut out in the concrete column embodiment of the present invention;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the second end plate in the concrete column embodiment of the present invention;

[0027] Fig. 9 It is a front view of the second end plate in the concrete column embodiment of the present invention;

[0028] Fig.10 A side view of a second end plate in an embodiment of a concrete column of the present invention;

[0029] Fig.11 A front view of a first end plate with an 8-shaped hole in a concrete column embodiment of the present invention;

[0030] Fig.12 A front view of a second end plate of a concrete column embodiment of the present invention using an 8-shaped hole;

[0031] Fig.13 It is a schematic diagram of the connection between concrete columns of the present invention;

[0032] Fig.14 It is a front schematic diagram of a first embodiment of the connection structure between a concrete column and a pre-buried anchor plate of the present invention;

[0033] Fig.15 for Fig.14 DD section view;

[0034] Fig.16A schematic diagram of the layout of anchoring steel bars of the embedded anchor plate in the first embodiment of the connection structure between the concrete column and the embedded anchor plate of the present invention;

[0035] Fig.17 It is a front schematic diagram of a second embodiment of the connection structure between a concrete column and a pre-buried anchor plate of the present invention. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below with reference to the accompanying drawings.

[0037] like Figures 1 to 13 Shown is a preferred embodiment of the present invention.

[0038] A precast concrete column that is easy to connect includes a concrete column body 6 with main reinforcement 4 inside, a first end plate is provided at one end of the concrete column body 6, and a second end plate is provided at the other end of the concrete column body 6; a hoop 7 is covered on the concrete column body 6, and the hoop 7 is annular. In this embodiment, connecting plates 71 extending along the axial height direction of the hoop 7 for connecting to the beam 8 are welded on the four end faces.

[0039] An upper limit plate 72 and a lower limit plate 73 spaced apart from each other are welded to at least the end surface of the hoop 7 . The upper limit plate 72 is used to contact the lower surface of the upper top surface of the beam 8 , and the lower limit plate 73 is used to contact the lower surface of the lower bottom surface of the beam 8 .

[0040] like Figure 2 , 3 As shown, a plurality of steel partitions 74 are provided inside the hoop 7 for reinforcement. The steel partitions 74 are arranged in a tic-tac-toe pattern and are connected to the inner wall of the hoop 7 .

[0041] like Figure 4 , 5 As shown, a plurality of reinforcing ribs 75 are provided inside the hoop 7 for reinforcement. The reinforcing ribs 75 are vertically cross-arranged to form a mesh layout, and the reinforcing ribs 75 are connected to the inner wall of the hoop 7 .

[0042] The main reinforcements 4 may all be non-prestressed reinforcements, or the main reinforcements 4 may all be prestressed reinforcements, or the main reinforcements 4 may include both non-prestressed reinforcements and prestressed reinforcements.

[0043] The first end plate includes a first end plate body 1, and a plurality of first locking rib holes 11 are longitudinally penetrated on the end surface of the first end plate body 1 for connecting with the main rib 4; a polygonal through hole 13 is longitudinally penetrated in the middle of the first end plate body 1, and a first workpiece slot 131 extending transversely is formed on the inner hole wall of each side of the polygonal through hole 13, and each of the first workpiece slots 131 is linearly connected with a workpiece insertion hole 12 arranged transversely in the end plate body 1 and penetrating the outer wall of the first end plate body 1. The workpiece insertion hole 12 is an internal through hole with a certain depth drilled in the end plate body.

[0044] The second end plate includes a second end plate body 2, which is provided with a plurality of second locking rib holes 21 which run longitudinally through the second end plate body 2 and are used to connect the main ribs 4. A polygonal connecting plate 5 is fixed on the end face of the second end plate body 2 to form a boss, and a second workpiece slot 51 which extends laterally is formed on the outer peripheral walls of each side of the polygonal connecting plate 5.

[0045] The first workpiece slot 131, the second workpiece slot 51 and the polygonal through hole 13 are formed by longitudinally cutting the extension sections of each workpiece insertion hole 12 located in the middle of the first end plate body 1, and the cut complete block is used as the polygonal connecting plate 5; when the first end plate and the second end plate are spliced, and the polygonal connecting plate 5 is inserted into the polygonal through hole 13, the first workpiece slot 131 and the second workpiece slot 51 are connected to form a complete extension section of the workpiece insertion hole 12. The extension section and the corresponding section of the workpiece insertion hole 12 are actually part of the workpiece insertion hole 12, and are only expressed differently to facilitate the distinction between the structures before and after the workpiece insertion hole is cut.

[0046] In this embodiment, the first end plate body 1 and the second end plate body 2 are rectangular, and the polygonal through hole 13 is a rectangular hole; of course, the first end plate body 1 and the second end plate body 2 may be hexagonal, and the polygonal through hole 13 may be a hexagonal hole.

[0047] The first end plate body 1 is provided with a plurality of first threaded holes 14 which penetrate longitudinally and are used to be connected to the tensioning plate, and the second end plate body 2 is provided with a plurality of second threaded holes 22 which penetrate longitudinally and are used to be connected to the anchoring plate.

[0048] like Figures 6 to 10 As shown, the first rib locking hole 11 and the second rib locking hole 21 are both tapered holes with gradually increasing diameters from the inside to the outside. Fig.11 , 12 As shown, the first rib locking hole 11 and the second rib locking hole 21 are both 8-shaped holes with a large hole portion and a small hole portion, and the large hole portion is a threaded hole to form the first threaded hole 14 or the second threaded hole 22.

[0049] Of course, the first rib locking hole 11 and the second rib locking hole 21 may also have both a tapered hole and an 8-shaped hole.

[0050] The polygonal connecting plate 5 is provided with a plurality of threaded connection holes 52 , and the second end plate body 2 is provided with a plurality of through holes matching the threaded connection holes 52 . Bolts pass through the through holes from the back of the second end plate body 2 and are threadedly connected to the polygonal connecting plate 5 .

[0051] The middle part of the first end plate body 1 is a polygonal through hole 13 that runs through longitudinally. This arrangement is conducive to forming the polygonal through hole 13 by cutting. The cut complete piece (polygonal connecting plate 5) can be used as the boss of the second end plate body 2. The first end plate body 1 is provided with a plurality of workpiece insertion holes 12 arranged transversely. The extension section of each workpiece insertion hole 12 is cut into two halves, so that the first workpiece slot 131 is directly formed on the inner hole wall of each side of the polygonal through hole 13, and the second workpiece slot 51 is directly formed on the outer peripheral wall of each side of the polygonal connecting plate 5, without the need to use additional processes to process the workpiece slot. This end plate assembly has the advantages of convenient processing, high efficiency, low cost, and great material saving. At the same time, it also reduces the weight and thickness of the processed plate, making industrial mass production possible. And when the polygonal connecting plate is inserted into the polygonal through hole, the first workpiece slot and the second workpiece slot are connected to form a complete workpiece slot, which is conducive to pile connection.

[0052] The longitudinal direction in this embodiment is the thickness direction Y of the end plate body. Figure 6 shown.

[0053] The middle section of the concrete column 6 is covered with a hoop 7, which is ring-shaped. The four end faces of the hoop 7 are welded with connecting plates 71 extending along the axial height direction of the hoop for connecting with the beam 8. When connecting, the connecting plate 71 is connected to the middle vertical wall of the I-beam 8 by high-strength bolts 81.

[0054] like Fig.13 As shown, the connection between the columns is firm and fast, and is used to connect the first end plate in a precast concrete column as mentioned above with the second end plate in another precast concrete column as mentioned above; the polygonal connecting plate 5 fixed on the second end plate body 2 is inserted into the polygonal through hole 13 of the first end plate body 1, and the first workpiece slot 131 and the second workpiece slot 51 are connected to re-form a complete extension section of the workpiece insertion hole 12; the pin 50 is inserted into each workpiece insertion hole 12, and the pin 50 is simultaneously located in the first workpiece slot 131 and the second workpiece slot 51 to complete the connection and fixation of the first end plate body 1 and the second end plate body 2.

[0055] like Figures 14 to 16 The figure shows the first embodiment of the connection structure between the precast concrete column and the embedded anchor plate.

[0056] A connection structure using the above-mentioned precast concrete column and embedded anchor plate, including an embedded anchor plate 9 for embedding below the structural surface 10, the embedded anchor plate 9 is fixed on the first end plate body 1 of the concrete column 6 at the lowest end, the polygonal connecting plate 5 is fixed on the top surface of the embedded anchor plate 9, the polygonal connecting plate 5 is inserted into the polygonal through hole 13 of the first end plate body 1, the first workpiece slot 131 and the second workpiece slot 51 are connected to re-form the extension section of the complete workpiece insertion hole 12; the plug 50 is inserted into each workpiece insertion hole 12, and the plug 50 is simultaneously located in the first workpiece slot 131 and the second workpiece slot 51 to complete the connection and fixation of the first end plate body 1 and the embedded anchor plate 9. The middle part of the bottom surface of the embedded anchor plate 9 has a shear key 91 extending downward, and a plurality of anchoring steel bars 92 are inserted into the embedded anchor plate 9.

[0057] The embedded anchor plate 9 and anchoring steel bars 92 are cast below the structural surface.

[0058] like Fig.17 The figure shows the first embodiment of the connection structure between the precast concrete column and the embedded anchor plate.

[0059] A connection structure using the above-mentioned precast concrete column and embedded anchor plate includes an embedded anchor plate 9 for embedding below the structural surface 10, the embedded anchor plate 9 is fixed to the end plate of the lowest concrete column 6, one end of the concrete column 6 is embedded with a grouting sleeve 61, and the grouting sleeve 61 is provided with embedded steel bars 611, and the embedded steel bars 611 pass through the end plate downward and are fixed to the embedded anchor plate 9. The middle part of the bottom surface of the embedded anchor plate 9 is provided with a shear key 91 extending downward, and a plurality of anchoring steel bars 92 are inserted into the embedded anchor plate 9.

[0060] The embedded anchor plate 9, embedded steel bars 611 and anchoring steel bars 92 are cast below the structural surface.

[0061] It should be noted that the "extension section of the workpiece socket" and "corresponding section of the workpiece socket" described in the technical solution of the present invention are actually part of a complete workpiece socket before being cut. The concepts of "extension section" and "corresponding section" are introduced to avoid ambiguity and facilitate the distinction between the structure and state of the workpiece socket before and after being cut. This is also to illustrate that the cut "extension section" and "corresponding section" were originally part of the workpiece socket.

Claims

1. A prefabricated concrete column that is easy to connect, comprising a concrete column (6) with a main reinforcement (4) inside, a first end plate at one end of the concrete column (6), and a second end plate at the other end of the concrete column (6); Features: The concrete column (6) is covered with a hoop (7), the hoop (7) is ring-shaped, and a connecting plate (71) for connecting with the beam (8) is welded on at least one surface of the hoop (7); The first end plate comprises a first end plate body (1), and a plurality of first rib locking holes (11) for connecting with the main ribs (4) are formed on the end surface of the first end plate body (1); a polygonal through hole (13) is longitudinally penetrated in the middle of the first end plate body (1), and first workpiece slots (131) extending transversely are respectively formed on the inner hole walls of each side of the polygonal through hole (13), and each of the first workpiece slots (131) is linearly connected with a workpiece insertion hole (12) transversely arranged in the end plate body (1) and penetrating the outer wall of the first end plate body (1); The second end plate comprises a second end plate body (2), the second end plate body (2) is provided with a plurality of second rib locking holes (21) for connecting the main ribs (4), a polygonal connecting plate (5) is fixed on the end surface of the second end plate body (2) to form a boss, and a second workpiece slot (51) extending transversely is formed on the outer peripheral wall of each side of the polygonal connecting plate (5); The first workpiece slot (131), the second workpiece slot (51) and the polygonal through hole (13) are formed by longitudinally cutting the extension sections of the workpiece insertion holes (12) located in the middle of the first end plate body (1), and the cut complete block is used as the polygonal connecting plate (5); when the first end plate and the second end plate are spliced ​​and the polygonal connecting plate (5) is inserted into the polygonal through hole (13), the first workpiece slot (131) and the second workpiece slot (51) are butted to form a complete extension section of the workpiece insertion hole (12).

2. The prefabricated concrete column that facilitates connection according to claim 1, characterized in that: An upper limit plate (72) and a lower limit plate (73) are welded to the surface of the sleeve (7) connected to the beam (8), and are spaced apart from each other. The upper limit plate (72) is used to contact the lower surface of the upper top surface of the beam (8), and the lower limit plate (73) is used to contact the lower surface of the lower bottom surface of the beam (8).

3. The prefabricated concrete column that facilitates connection according to claim 1, characterized in that: The main reinforcements (4) are all non-prestressed reinforcements, or the main reinforcements (4) are all prestressed reinforcements, or the main reinforcements (4) have both non-prestressed reinforcements and prestressed reinforcements.

4. The prefabricated concrete column that facilitates connection according to claim 1, characterized in that: A steel partition plate (74) or a reinforcing rib (75) is arranged inside the hoop (7) for reinforcement, and the steel partition plate (74) or the reinforcing rib (75) is connected to the inner wall of the hoop (7).

5. The prefabricated concrete column that facilitates connection according to claim 1, characterized in that: The first end plate body (1) is provided with a plurality of first threaded holes (14) which are longitudinally penetrated and used for connecting with the tensioning plate, and the second end plate body (2) is provided with a plurality of second threaded holes (22) which are longitudinally penetrated and used for connecting with the anchoring plate; the first rib locking hole (11) and the second rib locking hole (21) are both tapered holes with a diameter gradually increasing from the inside to the outside; or, the first rib locking hole (11) and the second rib locking hole (21) are both 8-shaped holes with a large hole portion and a small hole portion, and the large hole portion is a threaded hole to form the first threaded hole (14) or the second threaded hole (22); or, the first rib locking hole (11) and the second rib locking hole (21) have both tapered holes and 8-shaped holes.

6. The prefabricated concrete column that facilitates connection according to claim 1, characterized in that: The first end plate body (1) and the second end plate body (2) are rectangular, and the polygonal through hole (13) is a rectangular hole; or, the first end plate body (1) and the second end plate body (2) are hexagonal, and the polygonal through hole (13) is a hexagonal hole.

7. The prefabricated concrete column that facilitates connection according to claim 1, characterized in that: The polygonal connecting plate (5) is provided with a plurality of threaded connecting holes (52), and the second end plate body (2) is provided with a plurality of through holes matching the threaded connecting holes (52). Bolts are passed through the through holes from the back side of the second end plate body (2) and are threadedly connected to the polygonal connecting plate (5).

8. A precast concrete column and embedded anchor plate connection structure according to claim 1, comprising an embedded anchor plate (9) embedded below a structural surface (10), characterized in that: The embedded anchor plate (9) is fixed on the first end plate body (1) of the concrete column (6) at the lowermost end; the polygonal connecting plate (5) is fixed on the top surface of the embedded anchor plate (9); the polygonal connecting plate (5) is inserted into the polygonal through hole (13) of the first end plate body (1); the first workpiece slot (131) and the second workpiece slot (51) are butted against each other to form a complete extension section of the workpiece insertion hole (12); a plug pin (50) is inserted into each workpiece insertion hole (12); the plug pin (50) is simultaneously located in the first workpiece slot (131) and the second workpiece slot (51), thereby completing the connection and fixation between the first end plate body (1) and the embedded anchor plate (9).

9. A precast concrete column and embedded anchor plate connection structure according to claim 1, comprising an embedded anchor plate (9) embedded below a structural surface (10), characterized in that: The embedded anchor plate (9) is fixed to the end plate of the lowest concrete column (6); a grouting sleeve (61) is embedded at one end of the concrete column (6); embedded steel bars (611) are arranged in the grouting sleeve (61); the embedded steel bars (611) pass downward through the end plate and are fixed to the embedded anchor plate (9).

10. The precast concrete column and embedded anchor plate connection structure according to claim 8 or 9, characterized in that: The middle part of the bottom surface of the embedded anchor plate (9) is provided with a shear key (91) extending downwards, and a plurality of anchoring steel bars (92) are inserted into the embedded anchor plate (9).

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