Prefabricated Concrete Beam-Column Inserted Bolt Splicing Joint and Manufacturing and Construction Method

Abstract

The present invention discloses an insert - type bolt splicing joint for precast concrete beam - column and its manufacturing and construction method. The splicing joint includes a precast concrete beam, a column, a beam - column connection head and a number of fasteners. Mortise - tenon structures are formed at both ends of the beam - column connection head and the precast concrete column. The beam - column connection head and the precast composite beam are quickly spliced through a connecting plate, and each connection part is fixedly connected by fasteners, realizing the splicing of precast beam - column under large - eccentricity compression in a dry - connection manner. While enhancing the flexural performance of the connection part of the precast beam - column, it also brings great convenience to installation, improves construction efficiency, has relatively high construction safety and relatively low cost. Among them, the beam - column connection head is independently set without considering the beam - column connection direction. The beam - column with the required length can be precast uniformly in the factory and then quickly assembled on site, which is convenient for realizing batch - scale production, effectively improving production efficiency and installation convenience.

Description

Technical Field

[0001] The present invention relates to the field of construction technology, and more specifically, to an insert - type bolt splicing joint for precast concrete beams and columns and a manufacturing and construction method thereof. Background Technique

[0002] Existing precast beams and columns can be roughly divided into two categories. The first category is beams and columns precast from reinforced concrete. The splicing surfaces of the beams and columns are all reserved with steel bars protruding out of the concrete. During installation, a large number of support frames are required to support the beams and columns. Then, the exposed steel bars on the beams and columns are butt - jointed and bundled and fixed one by one according to the installation requirements, and concrete is poured at the steel bar joints. The problems of such beams and columns are that a large number of support frames need to be set up on - site during installation, and the position of each steel bar at the joint needs to be corrected, and then the steel bars are bundled on - site. This will make the construction efficiency very slow, and at the same time, there will be potential safety hazards due to manual operation problems. In addition, there is a joint between the concrete poured on - site at the joint and the concrete in the precast beams and columns, and they cannot be integrated into one body. The bearing capacity here largely depends on the steel bars inside to bear, which will have great defects in bearing capacity and flexural resistance. The second category is beams and columns of heavy steel structures. As Figure 1 shown, both the beams and columns are made of steel parts and are fixedly connected through connecting parts at the joints. Although such beams and columns have been improved in terms of connection firmness and installation convenience, their steel consumption is relatively large, the cost is relatively high, and the rust - proof treatment of the steel connection structure is not good, which is easy to cause rust problems and affect the service life of the building. Summary of the Invention

[0003] The purpose of the present invention is to provide an insert - type bolt splicing joint for precast concrete beams and columns and a manufacturing and construction method thereof, so as to solve the problems existing in the above - mentioned background technique, while ensuring the connection firmness and installation convenience of the beams and columns, reducing costs, improving construction efficiency, eliminating potential safety hazards, and extending the service life of the building.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] An insert - type bolt splicing joint for precast concrete beams and columns provided by the present invention, which is used for the splicing of two precast concrete columns and the splicing with at least one precast concrete composite beam, includes:

[0006] A beam - column connection head, the beam - column connection head includes a tenon - end structure respectively connected to the two precast concrete columns and at least one first connecting plate connected to the precast concrete composite beam. Both of the tenon - end structures include a tenon protrusion and a first connection platform;

[0007] The mortise end structures are respectively arranged on the splicing surfaces of the two concrete precast columns. Each of the mortise end structures includes a mortise recess portion that cooperates with the tenon protrusion portion and a second connection platform that fits against the first connection platform. The first connection platform and the second connection platform are correspondingly provided with first assembly holes for inserting the first fasteners. When the two concrete precast columns are respectively spliced with the beam-column joint, the tenon protrusion portion is inserted into the mortise recess portion, and the first connection platform fits against the second connection platform and is fixedly connected with the first fasteners.

[0008] The beam connection structure is arranged on the splicing surface of the concrete precast composite beam. The beam connection structure includes a second connection plate that is arranged in parallel and fits against the first connection plate. The first connection plate and the second connection plate are correspondingly provided with second assembly holes for inserting the second fasteners. When the concrete precast composite beam is spliced with the beam-column joint, the first connection plate fits against the second connection plate and is fixedly connected with the second fasteners.

[0009] Preferably, the two tenon protrusion portions are of an integral structure, the two first connection platforms are of a square frame structure and are arranged around the tenon protrusion portion, and the first connection plate is arranged between the two first connection platforms.

[0010] Preferably, the beam-column joint further includes a plurality of first rib plates connected between the two first connection platforms.

[0011] Preferably, the two tenon protrusion portions are integrally formed by an I-beam, and each of the first rib plates is located at the corner position of the first connection platform.

[0012] Preferably, each of the two concrete precast columns includes a column concrete part and a column steel bar part arranged in the column concrete part. The column steel bar part includes a first steel bar arranged vertically, a first stirrup arranged horizontally, and an installation platform arranged horizontally. The mortise recess portion extends into the column concrete part. The second connection platform is connected to the installation platform through a second rib plate. Each of the first steel bars is distributed around the mortise recess portion and is welded to the side of the installation platform away from the second connection platform.

[0013] Preferably, the mortise recess portion is of a cylindrical structure, and the second connection platform and the installation platform are both of a square frame structure and are arranged around the mortise recess portion.

[0014] Preferably, the mortise recess portion is provided with first positioning rivets for positioning the first steel bars.

[0015] Preferably, the precast concrete composite beam includes a beam concrete part and a beam steel bar part, and the second connecting plate is located outside the beam concrete part; the beam steel bar part includes a horizontally arranged second steel bar and a third steel bar, and a vertically arranged second stirrup; the beam connection structure further includes an upper panel and a lower panel respectively arranged at the upper end and the lower end of the second connecting plate, and second positioning rivets respectively arranged on the upper surface of the upper panel and the lower surface of the lower panel; the second steel bar and the third steel bar are respectively hooked to the second positioning rivets, and the second steel bar is located outside the beam concrete part; the beam steel bar part further includes a horizontally arranged fifth steel bar welded to the upper panel and the lower panel respectively.

[0016] Preferably, the beam connection structure further includes a baffle perpendicular to the second connecting plate, and a third connecting plate arranged on one side of the baffle away from the beam-column connection head and connected to the second connecting plate, and shear-resistant components are provided on both the second connecting plate and the third connecting plate.

[0017] The present invention also provides a manufacturing and construction method for the assembled concrete beam-column inserted bolt splicing joint as described above, including the following steps:

[0018] Precast a concrete precast column, a concrete precast composite beam, and a beam-column connection head in a factory, and transport them to the construction site;

[0019] Splice the mortise end structure of the concrete precast column and the tenon end structure of the beam-column connection head together to form a mortise and tenon connection structure, and fixedly connect them with a first fastener;

[0020] Fit the second connecting plate of the concrete precast composite beam with the first connecting plate of the beam-column connection head, and fixedly connect them with a second fastener;

[0021] Pour concrete at the joint between the concrete precast column and the beam-column connection head and at the joint between the concrete precast composite beam and the beam-column connection head.

[0022] In the technical solution provided by the present invention, an assembled concrete beam-column inserted bolt splicing joint is used for splicing two concrete precast columns and splicing with at least one concrete precast composite beam, and includes:

[0023] A beam-column connection head, which includes a tenon end structure respectively connected to two concrete precast columns and at least one first connecting plate connected to a concrete precast composite beam, and both tenon end structures include a tenon protrusion and a first connection platform;

[0024] The mortise end structures are respectively arranged on the splicing surfaces of two precast concrete columns. Each mortise end structure includes a mortise recess portion that cooperates with a tenon protrusion portion and a second connection platform that fits against the first connection platform. The first connection platform and the second connection platform are correspondingly provided with first assembly holes for inserting first fasteners. When the two precast concrete columns are respectively spliced with the beam-column connector, the tenon protrusion portion is inserted into the mortise recess portion, and the first connection platform and the second connection platform are fitted together and fixedly connected with the first fasteners.

[0025] The beam connection structure is arranged on the splicing surface of the precast concrete composite beam. The beam connection structure includes a second connection plate that is arranged in parallel and in contact with the first connection plate. The first connection plate and the second connection plate are correspondingly provided with second assembly holes for inserting second fasteners. When the precast concrete composite beam is spliced with the beam-column connector, the first connection plate and the second connection plate are fitted together and fixedly connected with the second fasteners.

[0026] With such an arrangement, tenon-mortise structures are formed at both ends of the beam-column connector and the precast concrete columns. The beam-column connector and the precast concrete composite beam are quickly spliced through the connection plates, and each connection part is fixedly connected by fasteners. It can realize the splicing connection of precast concrete beam-columns under large eccentric compression in a dry connection method without a support frame and welding on-site. While enhancing the flexural performance of the connection part of the precast beam-columns, it also brings great convenience to the installation, improves the construction efficiency, has relatively high construction safety, and relatively low cost. In this splicing joint, the beam-column connector is independently arranged, and there is no need to consider the installation direction of the beam and column. According to the construction requirements, the beam and column with the required length are prefabricated in the factory, and then can be quickly assembled on-site, which is convenient for realizing batch and large-scale production, effectively improving the production efficiency and installation convenience, solving all the connection problems of the beam and column, and effectively realizing the industrialized, industrial, and automated batch production of precast components. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic diagram of the splicing structure of prefabricated heavy steel beam-columns in the prior art;

[0029] Figure 2 It is a schematic diagram of the overall structure of the inserted bolt splicing joint of prefabricated concrete beam-columns in the embodiment of the present invention;

[0030] Figure 3 is Figure 2 a partial schematic diagram at A in

[0031] Figure 4 This is a schematic diagram of the overall structure of the precast concrete column in the embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the steel bar part of the precast concrete column in the embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the splicing surface of the precast concrete column in the embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the overall structure of the precast concrete composite beam in the embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the steel bar part of the precast concrete composite beam in the embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of the splicing surface of the precast concrete composite beam in the embodiment of the present invention;

[0037] Figure 10 This is a schematic diagram of the structure of the beam-column connection head in the embodiment of the present invention.

[0038] Figures 1-10 In:

[0039] 1 - Precast concrete column; 11 - Mortise recess; 12 - Second connection platform; 13 - First steel bar; 14 - First stirrup; 15 - Installation platform; 16 - Second rib plate; 17 - Column concrete part; 18 - First positioning rivet; 2 - Precast concrete composite beam; 201 - Upper panel; 202 - Lower panel; 203 - Second connecting plate; 204 - Baffle; 205 - Third connecting plate; 206 - Second steel bar; 207 - Third steel bar; 208 - Fourth steel bar; 209 - Second stirrup; 210 - Second positioning rivet; 211 - Beam concrete part; 212 - Fifth steel bar; 213 - Shear resistance component; 3 - Beam-column connection head; 31 - Tenon protrusion; 32 - First connection platform; 33 - First connecting plate; 34 - First rib plate; 4 - First assembly hole; 5 - Second assembly hole. Detailed implementation manners

[0040] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope protected by the present invention.

[0041] Hereinafter, embodiments will be described in detail with reference to the drawings. In addition, the embodiments shown below do not limit the content of the invention described in the claims in any way. Further, all the contents of the configurations shown in the following embodiments are not limited to those necessary for the solution of the invention described in the claims.

[0042] It should be noted that the terms "upper" and "lower" mentioned in the text refer to those in the placement state of the precast concrete beam-column inserted bolt splicing joint as shown in Figure 2 the figure. In the figure, the up-down direction is the so-called up-down orientation. Then, the relatively upper position in the figure is its upper end, and the relatively lower position in the figure is its lower end.

[0043] Please refer to the attached Figures 2-10 drawing. The precast concrete beam-column inserted bolt splicing joint provided in this embodiment is used for the splicing of two precast concrete columns 1 and the splicing with at least one precast concrete composite beam 2, and includes:

[0044] A beam-column connection head 3, the beam-column connection head 3 includes tenon end structures respectively connected to the two precast concrete columns 1 and at least one first connecting plate 33 connected to the precast concrete composite beam 2. Both tenon end structures include a tenon protrusion 31 and a first connection platform 32. Generally, as shown in Figure 2 the figure, a vertical longitudinal column can simultaneously connect horizontal crossbeams in four different directions on the horizontal plane. The number of connected crossbeams needs to be determined according to actual construction requirements, so as to determine the number of first connecting plates 33. For example, if four crossbeams are connected, four first connecting plates 33 are required.

[0045] Mortise end structures respectively arranged on the splicing surfaces of the two precast concrete columns 1. Each mortise end structure includes a mortise recess 11 that cooperates with the tenon protrusion 31 and a second connection platform 12 that fits with the first connection platform 32. As shown in Figure 3 the figure, the second connection platform 12 is welded to the mortise recess 11 and their ends are flush, which is convenient for assembling with the beam-column connection head 3. The first connection platform 32 and the second connection platform 12 are correspondingly provided with first assembly holes 4 for inserting first fasteners. The first fasteners are high-strength bolts to ensure the connection strength. When the upper and lower precast concrete columns 1 are respectively spliced with the beam-column connection head 3, the tenon protrusion 31 is correspondingly inserted into the mortise recess 11, and the first connection platform 32 and the second connection platform 12 are fitted and fixedly connected with the first fasteners.

[0046] A beam connection structure is provided at the splicing surface of a precast concrete composite beam 2. The beam connection structure includes a second connecting plate 203 that is arranged in parallel and in contact with a first connecting plate 33. The first connecting plate 33 and the second connecting plate 203 are correspondingly provided with second assembly holes 5 for inserting second fasteners. The second fastener is a high-strength bolt to meet the requirement of sufficient connection strength. When the precast concrete composite beam 2 is spliced with a beam-column connection head 3, the first connecting plate 33 and the second connecting plate 203 are brought into contact with each other and fixedly connected with the second fastener.

[0047] With such an arrangement, tenon-and-mortise structures are formed between the upper and lower ends of the beam-column connection head and the precast concrete column. The beam-column connection head and the precast concrete composite beam are quickly spliced through the connecting plates, and each connection part is fixedly connected through fasteners. It can achieve the splicing connection of precast concrete beam-columns under large eccentric compression in a dry connection method without a support frame and welding on-site. While enhancing the flexural performance of the connection part of the precast beam-columns, it also brings great convenience to the installation, improves the construction efficiency, and has relatively high construction safety. The beam-columns are precast concrete components, reducing the steel consumption and having a relatively low cost. In this splicing joint, the beam-column connection head is independently arranged, and there is no need to consider the installation direction of the beam-columns. The beam-columns with the required length can be precast in the factory according to the construction requirements, and then quickly assembled on-site, which is convenient for realizing batch and large-scale production, effectively improving the production efficiency and the installation convenience, solving the assembly problems of beam-columns of various connection forms, and effectively realizing the industrialized, industrial, and automated mass production of precast components.

[0048] In this embodiment, the two tenon protrusions 31 are of an integral structure, the two first connection platforms 32 are of a square frame structure and are arranged around the tenon protrusions 31, and the first connecting plate 33 is arranged between the two first connection platforms 32. The first connection platform 32 and the first connecting plate 33 are both made of steel plates and are fixedly connected correspondingly by welding, so the connection is more firm. With such an arrangement, the upper and lower precast concrete columns become an integral body after being inserted into the tenon protrusions, and their flexural performance and connection strength are better, which can effectively improve the structural strength of the precast columns and extend the service life of the building.

[0049] As Figure 10 shown, the beam-column connection head 3 further includes a plurality of first rib plates 34 connected between the two first connection platforms 32. The first rib plates 34 are also made of steel plates. When the precast column presses on the first connection platform 32, it can effectively support and connect the two first connection platforms 32 in the vertical direction, prevent the first connection platform 32 from being bent, and spread and transfer the force, ensuring the connection is safe and reliable.

[0050] Specifically, the two tenon protrusions 31 are integrally formed from an I-beam. The I-beam is a standard component and serves as the central part of the beam-column connector 3. It has good perpendicularity and high load-bearing capacity, thus ensuring the perpendicularity of the column and strengthening the flexural resistance at the column connection. Among them, the total length of the I-beam, that is, the total length along the vertical direction, is 800 millimeters. In this way, the I-beam is cut to form the central tenon protrusion 31, and the square-shaped first connection platform 32 is welded. Then, according to the actual installation direction of the beam, the first connecting plate 33 is additionally welded to form the finished product of the beam-column connector 3. Each first rib plate 34 is located at the four corner positions of the first connection platform 32, which can play an effective supporting role in all directions and at the same time does not interfere with the connection to the composite beam.

[0051] As Figure 3 shown, the second assembly hole 5 is a round hole or an oblong hole. To ensure firm connection, multiple second assembly holes 5 are provided and evenly distributed. As Figure 10 shown, two columns of second assembly holes 5 are provided on the first connecting plate 33, one column being round holes and the other column being oblong holes. In this way, position fine-tuning can be carried out through the oblong holes during connection to avoid the inability to install the composite beam due to manufacturing errors. Multiple first assembly holes 4 can also be provided, and their positions, quantities, etc. can be determined according to the actual construction requirements. After being assembled with the precast column, high-strength bolts are locked to ensure sufficient connection strength and improve the connection safety and reliability.

[0052] As Figure 4 shown, both of the two precast concrete columns 1 include a column concrete part 17 and a column steel bar part provided in the column concrete part 17. Among them, the column steel bar part includes vertically arranged first steel bars 13, horizontally arranged first stirrups 14, and horizontally arranged installation platforms 15. As Figure 5 shown, the mortise recess 11 extends into the column concrete part 17. The second connection platforms 12 are located at the upper and lower ends of the precast concrete column 1 and are connected to the installation platforms 15 through second rib plates 16. The second rib plates 16 are multiple and evenly distributed. The lengths, quantities, etc. of the first steel bars 13 and the first stirrups 14 are specifically determined according to the on-site construction requirements. Each first steel bar 13 is distributed around the mortise recess 11 and welded to the side of the installation platform 15 away from the second connection platform 12, that is, welded between the two installation platforms 15, thereby forming a rigid connection to ensure the structural strength of the precast column.

[0053] Specifically, the mortise recess 11 is a cylindrical structure. In order to be inserted and matched with the tenon protrusion 31 formed by the I-beam, it is made into a square cylinder, thus forming a tenon-mortise structure connection. Both the second connection platform 12 and the installation platform 15 are square-shaped structures and are arranged around the mortise recess 11. Among them, the mortise recess 11, the second connection platform 12, the installation platform 15, and the second rib plates 16 are all made of steel plates to ensure that the splicing surface has sufficient installation strength.

[0054] AsFigure 6 As shown, the mortise recess 11 is provided with a first positioning rivet 18 for positioning the first steel bar 13, and the first positioning rivet 18 is welded to the outside of the mortise recess 11. In this way, the steel bars can be quickly positioned during welding, and they can be placed at the positions where the positioning rivets are provided and at the corner positions, effectively saving processing time and improving the production efficiency of precast columns. The concrete precast column 1 formed by the above structure has left-right and up-down tensile forces at the connection end after the concrete is poured.

[0055] As Figure 7 shown, the concrete precast composite beam 2 includes a beam concrete part 211 and a beam steel bar part, and the second connecting plate 203 is located outside the beam concrete part 211. Beam connection structures can be provided at both ends of the beam to connect with the columns at both ends. As Figure 8 shown, the beam steel bar part includes a second steel bar 206 and a third steel bar 207 arranged horizontally, and a second stirrup 209 arranged vertically. In order to make the subsequent formed beam concrete part 211 have sufficient structural strength, a fourth steel bar 208 is added between the second steel bar 206 and the third steel bar 207. The beam connection structure also includes an upper panel 201 and a lower panel 202 respectively arranged at the upper end and the lower end of the second connecting plate 203, and second positioning rivets 210 respectively arranged on the upper surface of the upper panel 201 and the lower surface of the lower panel 202. Among them, the upper panel 201, the second connecting plate 203 and the lower panel 202 can be integrally formed, and are processed by cutting a fixed length from an I-beam. The second steel bar 206 is located above the upper panel 201, is hooked to the second positioning rivet 210, and the second steel bar 206 is located outside the beam concrete part 211. The third steel bar 207 is located below the lower panel 202 and is hooked to the second positioning rivet 210. The beam steel bar part also includes a fifth steel bar 212 arranged horizontally and welded to the upper panel 201 and the lower panel 202 respectively. In this way, the fifth steel bar 212 and the beam connection structure form a rigid connection by welding, while the steel bar cage composed of the second steel bar 206 and the third steel bar 207 is hooked to the beam connection structure to form a flexible connection, and there is an overlapping part between the steel bar cage and the fifth steel bar 212.

[0056] In the prior art, the second steel bar 206 is directly welded to the beam connection structure, and the steel bar cage composed of the second steel bar 206 and the third steel bar 207 forms a rigid connection with the beam connection structure. After the concrete is poured, only the welded connection points are relied on to bear all the downward pressure. Moreover, the composite beam is generally relatively long, and the steel bar cage will deflect and deform due to factors such as gravity. Since the two are rigidly connected, it will inevitably drive the beam connection structure to deflect, and it is impossible to ensure that the horizontal plane where the beam steel bar cage is located and the vertical plane where the beam connection structure is located form a 90-degree angle in actual production. In this embodiment, the beam steel bar cage is hooked to the beam connection structure and is a flexible connection. If the beam steel bar cage undergoes a certain amount of deflection and deformation, the beam connection structure will not shift. After the concrete is poured, it is still possible to ensure that the horizontal plane where the beam steel bar cage is located and the vertical plane where the beam connection structure is located form a 90-degree angle. At the same time, since the beam steel bar cage and the fifth steel bar 212 have an overlapping part, a high-strength connection point bearing part is formed, improving the ability to bear the downward force and avoiding relying only on the welded connection points to bear all the downward pressure.

[0057] As Figure 9 shown, the beam connection structure further includes a baffle 204 perpendicularly connected to the second connecting plate 203, and a third connecting plate 205 disposed on the side of the baffle 204 away from the beam-column connection head 3 and connected to the second connecting plate 203. There may be two baffles 204 and they are symmetrically arranged with respect to the second connecting plate 203. Shear-resistant components 213 are provided on both the second connecting plate 203 and the third connecting plate 205. The shear-resistant components 213 may be shear-resistant rivets or the like. In this way, after the pouring is completed, the connection strength between the beam concrete part and the beam connection structure and the shear resistance performance of the composite beam can be enhanced. In addition, the beam connection structure is all formed of steel.

[0058] This embodiment also provides a manufacturing and construction method for the precast concrete beam-column insert bolt splicing joint described above, including the following steps: prefabricating the concrete precast column 1, the concrete precast composite beam 2, and the beam-column connection head 3 in the factory and transporting them to the construction site; splicing the mortise end structure of the concrete precast column 1 and the tenon end structure of the beam-column connection head 3 together to form a mortise and tenon connection structure and fixing and connecting them with the first fastener; fitting the second connecting plate 203 of the concrete precast composite beam 2 with the first connecting plate 33 of the beam-column connection head 3 and fixing and connecting them with the second fastener; pouring concrete at the connection between the concrete precast column 1 and the beam-column connection head 3 and at the connection between the concrete precast composite beam 2 and the beam-column connection head 3 to achieve rust prevention treatment at the connection joint position and improve the connection firmness.

[0059] In practical applications, after prefabricating concrete beams and columns with steel molds in the factory, they are quickly assembled at the construction site using high-strength bolts. After the bolts are locked, concrete is cast on-site at the connection part for the second time. The bolt splicing joint in this embodiment effectively solves the problem of weak bearing capacity and flexural resistance of beams and columns in the prior art. The beams and columns are of reinforced concrete structure, greatly reducing the construction cost. After the residential framework is completed, there is no difference from the traditional on-site formwork casting framework structure, which has strong market promotion value.

[0060] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An assembled concrete beam-column inserted bolt splicing joint is used for splicing two precast concrete columns (1) and splicing with at least one precast concrete composite beam (2). It is characterized in that it includes: A beam-column connector (3), the beam-column connector (3) includes tenon end structures respectively connected to the two precast concrete columns (1) and at least one first connecting plate (33) connected to the precast concrete composite beam (2). Both of the tenon end structures include tenon protrusions (31) and first connecting platforms (32); Mortise end structures are respectively arranged on the splicing surfaces of the two precast concrete columns (1). Each mortise end structure includes a mortise recess (11) matching with the tenon protrusion (31) and a second connecting platform (12) fitting with the first connecting platform (32). The first connecting platform (32) and the second connecting platform (12) are correspondingly provided with first assembly holes (4) for inserting first fasteners; when the two precast concrete columns (1) are respectively spliced with the beam-column connector (3), the tenon protrusion (31) is inserted into the mortise recess (11), and the first connecting platform (32) fits with the second connecting platform (12) and is fixedly connected with the first fastener; A beam connecting structure is arranged on the splicing surface of the precast concrete composite beam (2). The beam connecting structure includes a second connecting plate (203) arranged in parallel and in contact with the first connecting plate (33). The first connecting plate (33) and the second connecting plate (203) are correspondingly provided with second assembly holes (5) for inserting second fasteners; when the precast concrete composite beam (2) is spliced with the beam-column connector (3), the first connecting plate (33) fits with the second connecting plate (203) and is fixedly connected with the second fastener.

2. The assembled concrete beam-column inserted bolt splicing joint according to claim 1, it is characterized in that The two tenon protrusions (31) are of an integrated structure. The two first connecting platforms (32) are of a square frame structure and are arranged around the tenon protrusion (31). The first connecting plate (33) is arranged between the two first connecting platforms (32).

3. The assembled concrete beam-column inserted bolt splicing joint according to claim 2, it is characterized in that The beam-column connector (3) further includes a plurality of first rib plates (34) connected between the two first connecting platforms (32).

4. The assembled concrete beam-column inserted bolt splicing joint according to claim 3, it is characterized in that The two tenon protrusions (31) are integrally formed by an I-beam. Each of the first rib plates (34) is located at the corner position of the first connecting platform (32).

5. The assembled concrete beam-column inserted bolt splicing joint according to claim 1, it is characterized in that Each of the two precast concrete columns (1) includes a column concrete part (17) and a column steel bar part disposed within the column concrete part (17). The column steel bar part includes a vertically disposed first steel bar (13), a horizontally disposed first stirrup (14), and a horizontally disposed installation platform (15). The mortise recess (11) extends into the column concrete part (17). The second connection platform (12) is connected to the installation platform (15) by a second rib plate (16). Each of the first steel bars (13) is distributed around the mortise recess (11) and welded to a side of the installation platform (15) away from the second connection platform (12).

6. The precast concrete beam-column insert bolt splicing joint according to claim 5, characterized in that, the mortise recess (11) is a cylindrical structure, and both the second connection platform (12) and the installation platform (15) are in a square frame structure and are disposed around the mortise recess (11).

7. The precast concrete beam-column insert bolt splicing joint according to claim 6, characterized in that, the mortise recess (11) is provided with a first positioning rivet (18) for positioning the first steel bar (13).

8. The precast concrete beam-column insert bolt splicing joint according to claim 1, characterized in that, the precast concrete composite beam (2) includes a beam concrete part (211) and a beam steel bar part. The second connecting plate (203) is located outside the beam concrete part (211). The beam steel bar part includes a horizontally disposed second steel bar (206), a third steel bar (207), and a vertically disposed second stirrup (209). The beam connection structure further includes an upper panel (201) and a lower panel (202) respectively disposed at the upper and lower ends of the second connecting plate (203), and second positioning rivets (210) respectively disposed on the upper surface of the upper panel (201) and the lower surface of the lower panel (202). The second steel bar (206) and the third steel bar (207) are respectively hooked to the second positioning rivets (210), and the second steel bar (206) is located outside the beam concrete part (211). The beam steel bar part further includes a horizontally disposed fifth steel bar (212) respectively welded to the upper panel (201) and the lower panel (202).

9. The precast concrete beam-column insert bolt splicing joint according to claim 8, characterized in that, the beam connection structure further includes a baffle (204) perpendicularly connected to the second connecting plate (203), and a third connecting plate (205) disposed on a side of the baffle (204) away from the beam-column connection head (3) and connected to the second connecting plate (203). Shear resistance members (213) are provided on both the second connecting plate (203) and the third connecting plate (205).

10. A manufacturing and construction method for the precast concrete beam-column insert bolt splicing joint according to claim 1, characterized in that, it includes the following steps: Prefabricate concrete precast columns (1), concrete precast composite beams (2), and beam-column connectors (3) in the factory and transport them to the construction site; Splice the mortise end structure of the concrete precast column (1) and the tenon end structure of the beam-column connector (3) together to form a mortise and tenon connection structure, and fix and connect them with the first fastener; Fit the second connecting plate (203) of the concrete precast composite beam (2) with the first connecting plate (33) of the beam-column connector (3), and fix and connect them with the second fastener; Pour concrete at the joints between the concrete precast column (1) and the beam-column connector (3) and at the joints between the concrete precast composite beam (2) and the beam-column connector (3).

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