An assembled concrete beam-column mortar anchor connection structure with shear keys and an assembly method

Abstract

The present invention discloses a prefabricated concrete beam-column grout-anchor connection structure with a shear key and an assembly method, comprising: a prefabricated beam, prefabricated columns are respectively arranged on both sides of the prefabricated beam, first connectors are respectively arranged on the end faces of the prefabricated beam and the prefabricated column facing each other, and a second connector is arranged between the two oppositely arranged first connectors to connect the two first connectors as a whole to form a prefabricated beam-prefabricated column connection structure. By making the first connector between the prefabricated column and the prefabricated beam correspond to each other, the oppositely arranged first connectors are connected by the second connector, and fixed by the third connector, and then secondary grouting is performed to complete the transmission of the shear force of the connecting part between the beam and the column, and further enhance the integrity of the structure, and the seismic performance is better. In addition to the anchoring overlap of the prefabricated beam and column, the main process also includes on-site small-area grouting, which greatly improves the integrity of the structure and achieves the purpose of "strong node".

Description

Technical Field

[0001] The invention relates to the field of prefabricated assembled concrete structure buildings, and in particular to an assembled concrete beam-column mortar anchor connection structure with shear keys and an assembly method. Background Art

[0002] Prefabricated concrete structures have the advantages of fast construction speed, energy saving and environmental protection, and small amount of on-site wet work. They have been rapidly developed in China in recent years. Prefabricated concrete frame structure is one of the main structural forms currently used in my country. In prefabricated concrete frame structure, how to achieve the connection between prefabricated beams and prefabricated columns is an important technical issue. In the past, the connection between beams and columns mainly adopted the method of connecting with steel sleeves and then pouring concrete at the connection. The construction was complicated, the cost was high, and the amount of wet work was large. For this reason, in recent years, some scholars have proposed the method of using steel to connect prefabricated columns and prefabricated beams, but there is on-site welding at the connection, and the construction quality is not easy to guarantee.

[0003] In order to improve the above two connection technologies, the present invention proposes an assembled concrete beam-column mortar anchor connection structure with shear keys and an assembly method, which does not require sleeves when connecting steel bars and does not require welding when connecting steel plates, thereby reducing costs, making construction quality easy to ensure, and having the advantages of small wet work volume of the structure itself and higher node strength. Summary of the invention

[0004] The purpose of the present invention is to provide a prefabricated concrete beam-column mortar anchor connection structure with shear keys and an assembly method, which can solve the problems in the prior art that the steel bar connection requires a sleeve resulting in high cost and the steel connection requires on-site welding resulting in difficulty in ensuring construction quality. In addition, the structure itself has a small amount of wet work and a higher node strength.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides an assembled concrete beam-column grout-anchor connection structure with a shear key, comprising a precast beam, precast columns are respectively arranged on both sides of the precast beam, first connecting pieces are respectively arranged on the end faces of the precast beam and the precast column facing each other, and a second connecting piece is arranged between two oppositely arranged first connecting pieces, so as to connect the two first connecting pieces into one body to form a precast beam-precast column connection structure;

[0007] The first connecting member comprises a first steel plate arranged vertically, two strip ribs are respectively arranged in parallel on the upper and lower parts of the proximal end surface of one side of the first steel plate, a slot is formed between the two strip ribs and the first steel plate, a first shear-resistant steel plate is respectively arranged on the side wall of the first steel plate between the two slots, and a first through hole is opened on the strip rib;

[0008] The second connecting member comprises a second steel plate arranged in a vertical direction, and the upper and lower end surfaces of the second steel plate are respectively provided with third steel plates arranged in a transverse direction to form an I-shaped structure, and a second shear-resistant steel plate is respectively provided on the side wall of the second steel plate between the two third steel plates, and the third steel plate is provided with a second through hole;

[0009] The third steel plate of the second connecting member is embedded in the slot of the first connecting member, the first through hole and the second through hole correspond to each other one by one, and the third connecting member is inserted into the first through hole and the second through hole.

[0010] The width and height of the first steel plate are 20-30 mm smaller than the width and height of the cross section of the prefabricated beam to facilitate the final grouting.

[0011] The prefabricated column includes a first steel frame, which includes four longitudinal stress-bearing steel bars arranged in a square shape in the prefabricated columns, one end of which is respectively sleeved with a vertical steel sleeve, and prefabricated column stirrups are evenly distributed vertically around the outer periphery of the longitudinal stress-bearing steel bars in the four prefabricated columns arranged in a square shape, and each of the prefabricated column stirrups is provided with prefabricated column tension bars arranged in a well shape.

[0012] The prefabricated column sleeve is provided with a first compression rib at one end of the vertical reinforcement sleeve, one end of the first compression rib is overlapped with the outer wall of the vertical reinforcement sleeve, and the other end thereof is fixedly connected with the first connecting piece.

[0013] The prefabricated beam comprises a second steel bar skeleton, which comprises four transverse stress-bearing steel bars arranged in a square shape inside the prefabricated beam, and prefabricated beam stirrups are uniformly distributed in the transverse direction around the four transverse stress-bearing steel bars arranged in a square shape inside the prefabricated beam.

[0014] Second compression bars are provided at both ends of the second steel bar skeleton in the precast beam, one end of the second compression bar is overlapped with the precast beam stirrups, and the other end is fixedly connected to the first connecting piece. At the same time, the first connecting piece is also fixedly connected to the transverse steel bars in the precast beam to increase the force transmission path and enhance the integrity of the beam-column connection node.

[0015] The cross section of the strip rib is rectangular.

[0016] The strip ribs are respectively provided with two first through holes arranged side by side, the third steel plate is provided with four second through holes, and the second through holes are arranged side by side in pairs.

[0017] The first through hole and the second through hole are both screw holes, the third connecting member is a bolt, nuts are screwed on both ends of the bolt, and the bolt is a high-strength bolt.

[0018] The length of the bolt rod is the thickness of the third steel plate plus twice the thickness of the strip rib plus twice the thickness of the nut. The length of the longitudinal force-bearing steel bars in the prefabricated column located in the vertical steel bar sleeve is half the height of the vertical steel bar sleeve of the prefabricated column.

[0019] The present invention provides a method for assembling a prefabricated concrete beam-column connection structure with a shear key, comprising the following specific steps:

[0020] Step S1: Fabrication of prefabricated columns

[0021] S11: Making the first steel frame

[0022] Arrange the longitudinal stress-bearing steel bars in four prefabricated columns in a square shape, insert vertical steel bar sleeves into the upper ends of the longitudinal stress-bearing steel bars in the four prefabricated columns, and evenly distribute prefabricated column stirrups vertically around the peripheries of the longitudinal stress-bearing steel bars in the four prefabricated columns arranged in a square shape, and each of the prefabricated column stirrups is provided with prefabricated column tension bars arranged in a well shape;

[0023] S12: Install the first connecting member

[0024] A first compression rib is arranged at one end of the prefabricated column sleeve provided with a vertical reinforcement sleeve, one end of the first compression rib is overlapped with the outer wall of the vertical reinforcement sleeve, and the other end thereof is fixedly connected to the first connecting member;

[0025] S13: Concrete pouring

[0026] A formwork is supported outside the first steel frame, and concrete is poured until the concrete is poured to the outer surface of the first fixed connection piece. After the concrete solidifies, the formwork is removed to complete the production of the prefabricated column.

[0027] Step S2: Fabrication of precast beams

[0028] S21: Making the second steel frame

[0029] Arrange the transverse stress-bearing steel bars in four prefabricated beams in a square shape, and uniformly distribute prefabricated beam stirrups in the transverse direction around the transverse stress-bearing steel bars in the four prefabricated beams arranged in a square shape;

[0030] S22: Install the first connecting member

[0031] A second compression rib is arranged at both ends of the precast beam, one end of the second compression rib is overlapped with the stirrup of the precast beam, and the other end of the second compression rib is fixedly connected to the first connecting piece, and the first connecting piece is also fixedly connected to the transverse steel bar in the precast beam;

[0032] S23: Pouring concrete

[0033] A formwork is supported outside the second steel frame, and concrete is poured until the concrete is poured to the outer surface of the first fixed connection piece. After the concrete solidifies, the formwork is removed to complete the production of the precast beam.

[0034] Step S3: Assembly of precast columns and precast beams

[0035] S31: Hoisting of precast columns and precast beams

[0036] A vertical support is arranged at the pre-installation position, and two prefabricated columns and a prefabricated beam are hoisted into place, wherein the prefabricated beam is located between the two prefabricated columns and rests on the vertical support;

[0037] S32: Install the second connection piece

[0038] A second connecting member is correspondingly inserted between the two first connecting members corresponding to the prefabricated column and the prefabricated beam, that is, the third steel plate of the second connecting member is embedded in the slot of the first connecting member, the first through hole and the second through hole correspond one to one, and the third connecting member is inserted in the first through hole and the second through hole, thereby completing the dry connection between the prefabricated column and the prefabricated beam;

[0039] S33: Pouring grout

[0040] The formwork is supported outside the connection ends of the first connecting member and the second connecting member, and grouting material is poured. After the grouting material reaches the expected strength, the formwork and vertical support are removed to obtain the final assembled concrete beam-column grouting anchor connection structure.

[0041] The beneficial effects of the assembled concrete beam-column mortar anchor connection structure with shear keys and the assembly method of the present invention are:

[0042] 1. In addition to anchoring and lap jointing of prefabricated beams and columns, the main process of the present invention also includes on-site small-area grouting, which greatly improves the integrity of the structure and achieves the purpose of "strong nodes". The grouting material is not only high in strength, but also can reach the expected strength in about 2 hours, greatly shortening the time required for on-site construction, which can greatly improve the construction speed and save costs.

[0043] 2. The structure of the present invention completes the transmission of shear force in the connection part between beams and columns by making the first connecting pieces between prefabricated columns and prefabricated beams correspond to each other, connecting the first connecting pieces that are relatively arranged by the second connecting pieces, fixing them by the third connecting pieces, and then performing secondary grouting, thereby further enhancing the integrity of the structure and improving the seismic performance.

[0044] 3. The parts of the present invention that require high manufacturing precision, including prefabricated columns, prefabricated beams, first compression ribs, second compression ribs, first connecting pieces, second connecting pieces, third connecting pieces, and corresponding matching nuts are all completed in the factory, and the difficulty of on-site assembly is not high, which can save the learning cost of construction workers and greatly improve construction efficiency.

[0045] 4. The force transmission between the components of the present invention is that the first connector is welded to the first compression bar of the prefabricated column, and the first connector is welded to the second compression bar of the prefabricated beam and the transverse force-bearing steel bars in the prefabricated beam. The first compression bar is welded to the first steel bar skeleton, and the second compression bar is welded to the second steel bar skeleton. The two first connectors are connected by the second connector, and then the first connector and the second connector are anchored by the third connector, and finally the secondary grouting is performed. It can be seen that the force transmission path is clear, reliable, and has strong integrity. Shear steel plates are provided on the first connector and the second connector to increase the node to bear the force, further completing the transmission of shear force, which is more reliable than a single structure that relies on welds to transmit force.

[0046] 5. The present invention uses a large number of assembly operations, and only a small part of the area is grouting for the second time. However, the grouting material reaches the expected strength in a very short time, which is much shorter than the time required for the original cast-in-place operation. It meets the advantages of prefabricated concrete structures such as energy conservation, environmental protection, and economical and safe green building development requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a structural schematic diagram of a first connecting member;

[0048] Figure 2 is a schematic structural diagram of a second connecting member;

[0049] Figure 3 is a schematic diagram of the structure of the first rib;

[0050] Figure 4 is a schematic diagram of the structure of the second rib;

[0051] Figure 5 is a schematic structural diagram of a third connecting member;

[0052] Figure 6 is a schematic structural diagram of a first steel reinforcement skeleton;

[0053] Figure 7 A schematic diagram of the structure of a first steel bar skeleton for installing first compression bars and first connecting members;

[0054] Figure 8 It is a structural diagram of a prefabricated column;

[0055] Fig. 9 is a schematic structural diagram of a second steel reinforcement skeleton;

[0056] Fig.10 A schematic diagram of the structure of the first steel reinforcement skeleton for installing the second compression reinforcement and the first connecting member;

[0057] Fig.11 This is a structural diagram of a precast beam;

[0058] Fig.12 Schematic diagram of the assembly process of precast beams and precast columns Figure 1 ;

[0059] Fig.13 Schematic diagram of the assembly process of precast beams and precast columns Figure 2 ;

[0060] Fig.14 Schematic diagram of the assembly process of precast beams and precast columns Figure 3 ;

[0061] Fig.15 Schematic diagram of the assembly process of precast beams and precast columns Figure 4 ;

[0062] Fig.16 Schematic diagram of the assembly structure of precast beams and precast columns.

[0063] In the figure: 1-vertical steel sleeve, 2-first connecting piece, 3-strip rib, 4-first shear steel plate, 5-first through hole, 6-second connecting piece, 7-second steel plate, 8-third steel plate, 9-second shear steel plate, 10-first compression rib, 11-second compression rib, 12-bolt, 13-nut, 14-longitudinal stress-bearing steel bar in precast column, 15-precast column stirrup, 16-precast column tension bar, 17-precast column, 18-transverse stress-bearing steel bar in precast beam, 19-precast beam stirrup, 20-precast beam, 21-support member, 22-grouting section, 23-first steel plate, 24-second through hole, 25-first steel skeleton, 26-second steel skeleton, 27 third connecting piece. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0066] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0067] like Figure 1-Figure 16 As shown, the present invention provides an assembled concrete beam-column grouting anchor connection structure with a shear key, comprising a precast beam 20, precast columns 17 are respectively arranged on both sides of the precast beam 20, first connecting members 2 are respectively arranged on the end faces of the precast beam 20 and the precast column 17 facing each other, a second connecting member 6 is arranged between the two oppositely arranged first connecting members 2, so as to connect the two first connecting members 2 as a whole to form a precast beam-precast column connection structure; that is, the precast column 17 corresponds to the first connecting member 2 between the precast beam 20, the two oppositely arranged first connecting members 2 are connected by the second connecting member 6, and are fixed by the third connecting member 27, and under the support condition of the vertical support 21, secondary grouting is performed to form a grouting section 22.

[0068] The structure of the present invention completes the transmission of shear force at the connection part between the beam and the column by arranging connectors and shear-resistant steel plates at the connection part between the prefabricated beam 20 and the prefabricated column 17. A large number of experiments have also proved that on-site grouting further enhances the integrity of the structure, making the structure more stable in force, more reliable in force transmission, and better in earthquake resistance. In addition, the grouting area is small, and the high-strength grouting material used is not only high in strength, but also has a short setting time, which greatly shortens the time required for on-site construction on the construction site and can greatly improve the construction speed.

[0069] The first connecting member 2 comprises a first steel plate 23 arranged vertically, two strip ribs 3 are respectively arranged in parallel at the upper and lower parts of the proximal end surface of one side of the first steel plate 23, a slot is formed between the two strip ribs 3 and the first steel plate 23, a first shear steel plate 4 is respectively arranged on the side wall of the first steel plate 23 between the two slots, a first through hole 5 is opened on the strip rib 3, and the size and thickness of the first shear steel plate 4 can be determined according to the shear force transmitted between the beam and the column;

[0070] The second connecting member 6 includes a second steel plate 7 arranged vertically, and the upper and lower end surfaces of the second steel plate 7 are respectively provided with third steel plates 8 arranged horizontally to form an I-shaped structure, and a second shear steel plate 9 is respectively provided on the side wall of the second steel plate 7 between the two third steel plates 8, and a second through hole 24 is opened on the third steel plate 8. The size and thickness of the second shear steel plate 9 are determined according to the shear force transmitted between the beam and the column;

[0071] The third steel plate 8 of the second connecting member 6 is embedded in the slot of the first connecting member 2 , the first through holes 5 and the second through holes 24 correspond one to one, and the third connecting members 27 are inserted into the first through holes 5 and the second through holes 24 .

[0072] Furthermore, in this embodiment, the width and height of the first steel plate 23 are 20-30 mm smaller than the width and height of the cross section of the prefabricated beam 20 to facilitate grouting at a later stage.

[0073] Furthermore, in the present embodiment, the prefabricated column 17 includes a first steel bar skeleton 25, the first steel bar skeleton 25 includes four prefabricated column inner longitudinal stress-bearing steel bars 14 arranged in a square shape, one end of the four prefabricated column inner longitudinal stress-bearing steel bars 14 are respectively sleeved with vertical steel bar sleeves 1, and prefabricated column stirrups 15 are evenly distributed vertically on the periphery of the four prefabricated column inner longitudinal stress-bearing steel bars 14 arranged in a square shape, and each of the prefabricated column stirrups 15 is provided with prefabricated column tension bars 16 arranged in a well shape.

[0074] Furthermore, in the present embodiment, one end of the prefabricated column 17 which is sleeved with the vertical steel bar sleeve 1 is provided with a first compression bar 10, one end of the first compression bar 10 is overlapped on the outer wall of the vertical steel bar sleeve 1, and the other end thereof is fixedly connected to the first connecting member 2, and the length of the longitudinal force-bearing steel bars 14 in the prefabricated column located in the vertical steel bar sleeve 1 is half of the height of the vertical steel bar sleeve 1.

[0075] Furthermore, in this embodiment, the precast beam 20 includes a second steel bar skeleton 26, which includes four transverse stress-bearing steel bars 18 arranged in a square shape, and precast beam stirrups 19 are evenly distributed in the transverse direction around the four transverse stress-bearing steel bars 18 arranged in a square shape.

[0076] Furthermore, in this embodiment, second compression ribs 11 are provided at both ends of the second steel skeleton 26 in the precast beam 20, one end of the second compression rib 11 is overlapped on the precast beam stirrup 19, and the other end thereof is fixedly connected to the first connecting member 2. At the same time, the first connecting member 2 is fixedly connected to the transverse force-bearing steel bars 18 in the precast beam to transmit internal force.

[0077] Furthermore, in the present embodiment, the cross-section of the strip rib 3 is rectangular, and two first through holes 5 arranged side by side are respectively provided on the strip rib 3, and the first through holes 5 on the two parallel strip ribs 3 correspond to each other and are arranged in parallel. The third steel plate 8 is provided with four second through holes 24, and the second through holes 24 are arranged side by side in pairs, and the second through holes 24 on the two parallel third steel plates 8 correspond to each other and are arranged in parallel. The thickness of the third steel plate is determined based on the shear force calculation transmitted between the beam and column connected thereto.

[0078] Furthermore, in the present embodiment, the first through hole 5 and the second through hole 24 are both screw holes, the third connecting member 27 is a bolt 12, nuts are screwed on both ends of the bolt 12, and the bolt 12 is a high-strength bolt; the length of the bolt rod of the bolt 12 is specifically the thickness of the third steel plate 8 plus twice the thickness of the strip rib 3 plus twice the thickness of the nut 13.

[0079] The present invention provides a method for assembling a prefabricated concrete beam-column connection structure with a shear key, comprising the following specific steps:

[0080] Step S1: Fabrication of prefabricated columns

[0081] S11: Making the first steel frame

[0082] Arrange the longitudinal stress-bearing steel bars 14 in four prefabricated columns in a square shape, insert the vertical steel bar sleeve 1 into the upper ends of the longitudinal stress-bearing steel bars 14 in the four prefabricated columns, and evenly distribute prefabricated column stirrups 15 vertically around the periphery of the longitudinal stress-bearing steel bars 14 in the four prefabricated columns arranged in a square shape, and each prefabricated column stirrup 15 is provided with a prefabricated column tie bar 16 arranged in a well shape;

[0083] S12: Install the first connecting member

[0084] A first compression rib 10 is provided at one end of the prefabricated column 17 sleeved with the vertical steel bar sleeve 1, one end of the first compression rib 10 is overlapped with the outer wall of the vertical steel bar sleeve 1, and the other end thereof is fixedly connected to the first connecting member 2. Specifically, the first compression rib 10 is placed on the upper and lower adjacent prefabricated column stirrups 15 of the first steel bar skeleton 25, and is tied with the longitudinal force-bearing steel bars 14 in the prefabricated column and the upper and lower adjacent prefabricated column stirrups 15, and then the first connecting member 2 and the first compression rib 10 are welded to form;

[0085] S13: Concrete pouring

[0086] A formwork is supported outside the first steel frame 25 to pour concrete until the concrete is poured to the outer surface of the first connecting member 2 . After the concrete solidifies, the formwork is removed to complete the production of the prefabricated column 17 .

[0087] Step S2: Fabrication of precast beams

[0088] S21: Making the second steel frame

[0089] Arrange the transverse stress-bearing steel bars 18 in four precast beams in a square shape, and uniformly distribute precast beam stirrups 19 in the transverse direction around the transverse stress-bearing steel bars 18 in the four precast beams arranged in a square shape;

[0090] S22: Install the first connecting member

[0091] A second compression rib 11 is provided at both ends of the precast beam 20, one end of the second compression rib 11 is overlapped with the precast beam stirrup 19, and the other end thereof is fixedly connected to the first connecting member 2, and the first connecting member 2 is fixedly connected to the transverse force-bearing steel bar 19 in the precast beam. Specifically, the second compression rib 11 is embedded in the second steel bar skeleton 26, and is welded to the precast beam stirrup 19, and then the first connecting member 2 and the second compression rib 11 are welded to form;

[0092] S23: Pouring concrete

[0093] A formwork is supported outside the second steel frame 26 to pour concrete until the concrete is poured to the outer surface of the first connecting member 2 . After the concrete solidifies, the formwork is removed to complete the production of the precast beam 20 .

[0094] Step S3: Assembly of precast columns and precast beams

[0095] S31: Hoisting of precast columns and precast beams

[0096] A vertical support 21 is arranged at the pre-installation position, and two prefabricated columns 17 and a prefabricated beam 20 are hoisted into place, wherein the prefabricated beam 20 is located between the two prefabricated columns 17 and rests on the vertical support;

[0097] During hoisting, please note that the center of the first through hole 5 of the first connecting member 2 on the prefabricated column 17 and the center of the first through hole 5 of the first connecting member 2 on the prefabricated beam 20 should be kept in a straight line.

[0098] S32: Install the second connection piece

[0099] A second connecting member 6 is correspondingly inserted between the two first connecting members 2 corresponding to the prefabricated column 17 and the prefabricated beam 20, that is, the third steel plate 8 of the second connecting member 6 is embedded in the slot of the first connecting member 2, the first through hole 5 and the second through hole 24 correspond one to one, and the third connecting member 27 is inserted in the first through hole 5 and the second through hole 24, thereby completing the dry connection between the prefabricated column 17 and the prefabricated beam 20;

[0100] S33: Pouring grout

[0101] A formwork is supported outside the connection ends of the first connector 2 and the second connector 6, and grouting material is poured to form a grouting section 22. After the grouting material reaches the expected strength, the formwork and vertical support are removed to obtain a final assembled concrete beam-column grout-anchor connection structure.

[0102] The force transmission mechanism of the assembled concrete beam-column grout-anchor connection structure with shear keys of the present invention is as follows: the shear force generated at the beam end by the deadweight of the precast beam 20 is transmitted to the first connecting member 2 through the pre-embedded ribbed steel plate in the precast beam 20, and the first connecting member 2 transmits the force received to the ribbed steel plate in the precast column 17, and then to the precast column 17; the tensile stress generated by the bending moment at the beam end of the precast beam 20 is transmitted to the precast column 17 through the upper ribs of the pre-embedded ribbed steel plate and the post-cast grout; the tensile stress generated by the bending moment at the beam end of the precast beam 20 is transmitted to the precast column 17 through the lower ribs of the pre-embedded ribbed steel plate and the post-cast grout; at the same time, the shear steel plates arranged on the pre-embedded ribbed steel plates and the second connecting member 6 not only contribute to the transmission of shear force and increase the force transmission path, but also can improve the bearing capacity of the component nodes and enhance the integrity of the structure.

[0103] A large number of experiments have proved that the integrity of pure dry-connected nodes is poor, and often fails to achieve the goal of "strong nodes, weak components". On-site grouting, on the basis of the original shear key support, further enhances the integrity of the structure, making the structure more stable, more reliable in force transmission, and better in seismic performance. In addition, the grouting area is small, and the high-strength grouting material used is not only high in strength, but also takes a short time to reach the expected strength, which greatly shortens the time required for on-site construction and can greatly increase the construction speed.

[0104] The parts of the present invention that require high manufacturing precision, including prefabricated columns 17, prefabricated beams 20, first compression ribs 10, second compression ribs 11, first connectors 2, and second connectors 6, are all completed in the factory. The difficulty of on-site assembly is not high, which can save the learning cost of construction workers and greatly improve construction efficiency. The first connector 2 is welded to the first compression ribs 10 and the second compression ribs 11, the first compression ribs 10 are welded to the first steel skeleton 25, and the second compression ribs 11 are welded to the first steel skeleton 25. The first connectors 2 are connected with the second connector 6, and then anchored with high-strength bolts 12 and then grouting is performed twice. Shear-resistant steel plates are provided on the first connector 2 and the second connector 6 to further complete the transmission of shear force, which is more reliable than a single structure that relies on welds to transmit force. The advantages of prefabricated concrete structures that meet the requirements of energy conservation, environmental protection, economic safety, and green building development have good engineering application prospects.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be included in the scope of the present claims.

Claims

1. An assembled concrete beam-column mortar anchor connection structure with a shear key, characterized in that: The method comprises: a prefabricated beam, prefabricated columns are respectively arranged on both sides of the prefabricated beam, first connecting members are respectively arranged on the end surfaces of the prefabricated beam and the prefabricated column facing each other, and a second connecting member is arranged between two oppositely arranged first connecting members to connect the two first connecting members into one body to form a prefabricated beam-prefabricated column connection structure; The first connecting member comprises a first steel plate arranged vertically, two strip ribs are respectively arranged in parallel on the upper and lower parts of the proximal end surface of one side of the first steel plate, a slot is formed between the two strip ribs and the first steel plate, a first shear-resistant steel plate is respectively arranged on the side wall of the first steel plate between the two slots, and a first through hole is opened on the strip rib; The second connecting member comprises a second steel plate arranged in a vertical direction, and the upper and lower end surfaces of the second steel plate are respectively provided with third steel plates arranged in a transverse direction to form an I-shaped structure, and a second shear-resistant steel plate is respectively provided on the side wall of the second steel plate between the two third steel plates, and the third steel plate is provided with a second through hole; The third steel plate of the second connecting member is embedded in the slot of the first connecting member, the first through hole and the second through hole correspond to each other one by one, and the third connecting member is inserted into the first through hole and the second through hole; The prefabricated column comprises a first steel bar skeleton, the first steel bar skeleton comprises four prefabricated column inner longitudinal stress-bearing steel bars arranged in a square shape, one end of the four prefabricated column inner longitudinal stress-bearing steel bars are respectively sleeved with vertical steel bar sleeves, prefabricated column stirrups are evenly distributed vertically around the outer periphery of the four prefabricated column inner longitudinal stress-bearing steel bars arranged in a square shape, and each of the prefabricated column stirrups is provided with prefabricated column tension bars arranged in a well shape; The prefabricated column sleeve is provided with a first compression rib at one end of the vertical reinforcement sleeve, one end of the first compression rib is overlapped with the outer wall of the vertical reinforcement sleeve, and the other end thereof is fixedly connected with the first connecting member; The prefabricated beam comprises a second steel bar skeleton, wherein the second steel bar skeleton comprises four prefabricated beam inner transverse force-bearing steel bars arranged in a square shape, and prefabricated beam stirrups are uniformly distributed in the transverse direction around the four prefabricated beam inner transverse force-bearing steel bars arranged in a square shape; The second compression bars are arranged at both ends of the second reinforcement skeleton in the precast beam, one end of the second compression bar is overlapped with the stirrups of the precast beam, and the other end of the second compression bar is fixedly connected to the first connecting piece, and the first connecting piece is also fixedly connected to the transverse reinforcement in the precast beam; The strip-shaped ribs are respectively provided with two first through holes arranged side by side, the third steel plate is provided with four second through holes, and the second through holes are arranged side by side in pairs; The length of the longitudinal force-bearing steel bars in the prefabricated column located in the vertical steel bar sleeve is half the height of the vertical steel bar sleeve of the prefabricated column; The width and height of the first steel plate are 20-30 mm smaller than the width and height of the cross section of the prefabricated beam; The first through hole and the second through hole are both screw holes, the third connecting member is a bolt, nuts are screwed on both ends of the bolt, the bolt is a high-strength bolt, and the length of the bolt rod is the thickness of the third steel plate plus twice the thickness of the strip rib plus twice the thickness of the nut.

2. The method for assembling a prefabricated concrete beam-column mortar anchor connection structure with a shear key according to claim 1, characterized in that: The following specific steps are included: Step S1: Fabrication of prefabricated columns S11: Making the first steel frame Arrange the longitudinal stress-bearing steel bars in four prefabricated columns in a square shape, insert vertical steel bar sleeves into the upper ends of the longitudinal stress-bearing steel bars in the four prefabricated columns, and evenly distribute prefabricated column stirrups vertically around the peripheries of the longitudinal stress-bearing steel bars in the four prefabricated columns arranged in a square shape, and each of the prefabricated column stirrups is provided with prefabricated column tension bars arranged in a well shape; S12: Install the first connecting member A first compression rib is arranged at one end of the prefabricated column sleeve provided with a vertical reinforcement sleeve, one end of the first compression rib is overlapped with the outer wall of the vertical reinforcement sleeve, and the other end thereof is fixedly connected to the first connecting member; S13: Concrete pouring Supporting the formwork outside the first steel frame, pouring concrete, pouring the concrete to the outer surface of the first connecting member fixedly connected, removing the formwork after the concrete solidifies, and completing the production of the prefabricated column; Step S2: Fabrication of precast beams S21: Making the second steel frame Arrange the transverse stress-bearing steel bars in four prefabricated beams in a square shape, and uniformly distribute prefabricated beam stirrups in the transverse direction around the transverse stress-bearing steel bars in the four prefabricated beams arranged in a square shape; S22: Install the first connecting member A second compression rib is arranged at both ends of the precast beam, one end of the second compression rib is overlapped with the stirrup of the precast beam, and the other end of the second compression rib is fixedly connected to the first connecting piece, and the first connecting piece is fixedly connected to the transverse steel bar in the precast beam; S23: Concrete pouring Supporting the formwork outside the second steel bar skeleton, pouring concrete, pouring the concrete to the outer surface of the first connecting member fixedly connected, removing the formwork after the concrete solidifies, and completing the production of the precast beam; Step S3: Assembly of precast columns and precast beams S31: Hoisting of precast columns and precast beams A vertical support is arranged at the pre-installation position, and two prefabricated columns and a prefabricated beam are hoisted into place, wherein the prefabricated beam is located between the two prefabricated columns and rests on the vertical support; S32: Install the second connection piece A second connecting member is correspondingly inserted between the two first connecting members corresponding to the prefabricated column and the prefabricated beam, that is, the third steel plate of the second connecting member is embedded in the slot of the first connecting member, the first through hole and the second through hole correspond one to one, and the third connecting member is inserted in the first through hole and the second through hole, thereby completing the dry connection between the prefabricated column and the prefabricated beam; S33: Pouring grout The formwork is supported outside the connection ends of the first connecting member and the second connecting member, and grouting material is poured. After the grouting material reaches the expected strength, the formwork and vertical support are removed to obtain the final assembled concrete beam-column grouting anchor connection structure.

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