A beam connector, prefabricated building beam, and construction method

Abstract

The present application relates to the technical field of connection of building prefabricated components, and in particular to a beam connector and a prefabricated building beam, and a construction method, comprising a first connection part, a second connection part and a snap plate, wherein a gap is provided between the first connection part and the second connection part; a snap groove is provided in the snap plate, and the two side walls of the snap groove are provided with slope surfaces corresponding to the first shear rib and the second shear rib, and the snap plate is connected to the first connection part and the second connection part through a fastener; wherein a gap is provided between the snap plate and the first connection plate and the second connection plate, and during the process of tightening the fastener, the first connection part and the second connection part have a tendency to approach each other, and the present application has the effect of improving the construction efficiency of connection of building prefabricated components.

Description

Technical Field

[0001] The present application relates to the technical field of connection of prefabricated building components, and in particular to a beam connector, a prefabricated building beam, and a construction method. Background Art

[0002] At present, the connection points of prefabricated building components during the construction process generally need to be connected with grout. For example, after the grouting sleeve is connected to the exposed steel bars of the prefabricated component, the grouting sleeve needs to be filled with grout. For another example, the concrete slurry is cast in place in the core area of ​​the node where the beam and column are connected. Alternatively, the upper part of the composite beam usually also needs to be cast in place with concrete slurry.

[0003] Therefore, the above connection method must wait until the concrete reaches a certain strength or with the help of support frames and formwork before the next layer of construction can be carried out, which affects the construction efficiency. Summary of the invention

[0004] In order to improve the construction efficiency of connecting prefabricated building components, the present application provides a beam connector, a prefabricated building beam, and a construction method.

[0005] The first technical purpose of the present application provides a beam connector that adopts the following technical solution: connected to the beam, including:

[0006] A first connection portion is disposed at an upper side and a lower side of an end of a beam, the first connection portion comprises a first connection plate, an end of the first connection plate is provided with a first anti-shear rib, the first anti-shear rib and an end surface of the first connection plate are staggered to form a first opening;

[0007] A second connection portion, corresponding to the first connection portion, is disposed on the upper side and the lower side of the other beam end portion, the second connection portion includes a second connection plate, the end portion of the second connection plate is provided with a second shear rib, the second shear rib and the end surface of the second connection plate are staggered to form a second opening, and a slope surface is provided at one position of the first shear rib and the second shear rib away from each other;

[0008] There is a gap between the first connecting portion and the second connecting portion;

[0009] A snap plate, wherein a snap groove is provided in the snap plate, and two side walls of the snap groove are provided as slope surfaces corresponding to the first anti-shear rib and the second anti-shear rib, and the snap plate is connected to the first connecting part and the second connecting part through a fastener;

[0010] There is a gap between the snap plate and the first connecting plate and the second connecting plate. During the process of tightening the fastener, the first connecting portion and the second connecting portion tend to approach each other.

[0011] By adopting the above technical solution, due to the existence of the slope surface, in the process of tightening the fastener, the buckle plate will move toward the inside of the first joint and the second joint, and the buckle plate squeezes the first shear rib and the second shear rib, and the joint and the second joint have a tendency to approach each other, thereby forming an axial prestress of the connection node. The greater the locking force of the fastener, the greater the prestress generated in the connection node. Compared with the prior art, the processing error can be eliminated, so that the butt joint has a certain tolerance capacity. In addition, compared with the prior art, it can quickly connect two prefabricated building components, thereby improving the connection construction efficiency of prefabricated building components.

[0012] Optionally: an abutment block is arranged between the first opening and the second opening and is located in the buckle groove.

[0013] By adopting the above technical solution, the first shear rib and the second shear rib are abutted on both sides of the abutment block. When the beam is subjected to negative bending, the upper snap plate and the first and second shear ribs bear tension, and the lower abutment block bears pressure, and the two together form a resistance moment; when the beam is subjected to positive bending, the lower snap plate and the first and second shear ribs bear tension, and the upper abutment block bears pressure, and the two together form a resistance moment.

[0014] Optionally, the fastener includes at least two first locking bolts, and the first locking bolts pass through the snap plate and are connected to the first anti-shear rib and the second anti-shear rib.

[0015] By adopting the above technical solution, the first locking bolt can quickly and stably connect the snap plate with the first anti-shear rib and the second anti-shear rib, thereby connecting the first connecting part and the second connecting part together.

[0016] Optionally: the fastener includes at least two second locking bolts, and the second locking bolts pass through two ends of the snap plate and are connected to the first connecting plate and the second connecting plate.

[0017] By adopting the above technical solution, the connection between the snap plate and the first connecting part and the second connecting part is further strengthened.

[0018] Optionally: the holes through which the first locking bolt and the second locking bolt pass on the snap plate are both long holes.

[0019] By adopting the above technical solution, the extending direction of the long hole is parallel to the direction in which the first connection part and the second connection part approach each other during the installation process. In addition, the setting of the long hole can allow a certain adjustment space for the first locking bolt and the second locking bolt to accommodate a certain construction error of the distance between the first connection part and the second connection part.

[0020] Optionally: the first connecting part includes a hoop body formed by two oppositely arranged first connecting plates and two oppositely arranged first side plates connected in sequence, and the second connecting part includes a hoop body formed by two oppositely arranged second connecting plates and two oppositely arranged second side plates connected in sequence.

[0021] By adopting the above technical solution, the hoop body can be used to surround the end portion connected to the beam, so that the connection between the connecting piece and the building component is more stable.

[0022] Optionally: the first connecting part includes two oppositely arranged first connecting plates and a first vertical plate arranged between the two first connecting plates and connected to the two first connecting plates, the second connecting part includes two oppositely arranged second connecting plates and a second vertical plate arranged between the two second connecting plates and connected to the two second connecting plates, and the first vertical plate and the second vertical plate are connected by a vertical plate connecting plate arranged on at least one side.

[0023] By adopting the above technical solution, an open cross-section of a single vertical plate is formed between the two first connecting plates and the two second connecting plates, which is convenient for pouring concrete after connecting the nodes.

[0024] Optionally: the end of the first connection portion has an oblique angle of angle β, the end of the second connection portion has an oblique angle of angle i, and ∠β<∠i.

[0025] The second technical purpose of the present application is to provide a prefabricated building beam: comprising a first component segment and a second component segment, the first connecting portion is arranged at the end of the first component segment, and the second connecting portion is arranged at the end of the second component segment.

[0026] Optionally: a first connecting plate is located at the lower part of the first component segment and exceeds the lower part of the first component segment, and the end of the second component segment is overlapped on the first connecting plate.

[0027] By adopting the above technical solution: relatively, a second connecting plate is provided at the lower part of the second connecting part, and the end of the second connecting plate is contracted inward compared to the end of the second component segment, and the end of the second component segment is overlapped on the first connecting plate. The first connecting plate realizes two functions. First, it can be used as the bottom plate of the filling cavity to support the slurry injected into the filling cavity. Secondly, it can be used as a temporary overlap component for supporting the second component segment during the construction process, thereby eliminating the need to set up a special support frame, speeding up the construction progress, and further improving the construction efficiency of the connection of prefabricated building components.

[0028] Optionally: both ends of the second component segment are correspondingly connected to the first component segment, the space between the two opposite end faces of the two first component segments is larger at the top and smaller at the bottom, and the second component segment is set to have a larger size at the top and smaller size at the bottom.

[0029] Optionally: a filling cavity is formed between the ends of the first component segment and the second component segment, and the filling cavity is a cavity that opens obliquely upward, and the filling cavity is larger at the top and smaller at the bottom.

[0030] Optionally: a wedge-shaped shear block is arranged in the filling cavity, and the wedge-shaped shear block is in contact with the ends of the first component segment and the second component segment.

[0031] By adopting the above technical scheme, since the length dimension of the second component segment is larger at the top and smaller at the bottom, the upper distance between the two first component segments is large and the lower distance is small, an inclined V-shaped space is formed between the end faces of the first component segment and the second component segment, and a wedge-shaped shear block is placed in the V-shaped space. The slope of the contact surface of the wedge-shaped shear block matches that of the filling cavity. The wedge-shaped shear block is inserted from the larger opening at the top of the filling cavity and then moved to the smaller lower part of the filling cavity until the wedge-shaped shear block is in close contact with the side wall of the filling cavity. The second component transmits the vertical force to the first component through the wedge-shaped shear block, forming the shear bearing capacity of the connection node, so that there is no need to wait for the concrete slurry to solidify, thereby improving the construction efficiency of the connection of prefabricated building components.

[0032] By adopting the above technical solution, the filling cavity can be used to fill the slurry, thereby improving the shear strength between components under the limit state of normal use.

[0033] The third technical purpose of this application is to provide a construction method for prefabricated building beams:

[0034] The construction steps include the following:

[0035] S1: hoist and install the two first component sections to keep them horizontal and at the same height;

[0036] S2: hoist a second component segment, lower it from the height between the two first component segments to the level of the first component segment, and temporarily overlap the end of the second component segment on the first connecting plate;

[0037] S3: placing a shear block in the filling cavity, so that the shear block contacts the end surfaces of the first component segment and the second component segment;

[0038] Or the first vertical plate and the second vertical plate are connected by a vertical plate connecting plate;

[0039] S4: placing an abutment block between the first opening and the second opening;

[0040] S5: Connect the buckle plate with the first connecting part and the second connecting part by using the first locking bolt and the second locking bolt;

[0041] S6: Filling the filling cavity with slurry.

[0042] By adopting the above technical solution, the first component section and the second component section can be quickly connected, and the connection has strong shear and bending resistance. In this construction sequence, the abutment block is in place before the buckle plate locking bolt is screwed in, so that the buckle plate can be relatively easily placed between the first shear rib and the second shear rib, and then after tightening the first locking bolt and the second locking bolt, the first shear rib and the second shear rib squeeze the abutment block, thereby forming the bending bearing capacity of the node.

[0043] In addition, compared with the existing technology, the processing error can be eliminated, so that the connector has a certain tolerance. Furthermore, compared with the existing technology, the two prefabricated building components can be connected faster, and there is no need to wait for the cast-in-place slurry to solidify, which improves the construction efficiency.

[0044] Optional: swap the order of steps S4 and S5.

[0045] By adopting the above technical solution, the abutment block needs to be hammered or cold-scaled in to ensure that the abutment block can be squeezed with the first shear rib and the second shear rib after being installed in place, thereby forming the bending bearing capacity of the node.

[0046] In summary, this application has the following beneficial effects:

[0047] 1. During the process of tightening the fastener, the snap plate will move toward the inside of the first joint and the second joint, and the snap plate will squeeze the first shear rib and the second shear rib, thereby forming an axial pre-compression stress in the connection node. The greater the locking force of the fastener, the greater the pre-compression stress generated in the connection node;

[0048] 2. The ends of the first member and the second member are arranged to form inclined surfaces with different slopes, forming a filling cavity with a larger size and an upwardly inclined opening, and then a wedge-shaped shear block is arranged in the cavity. Such a connection structure can form an effective shear bearing capacity between the two members;

[0049] 3. The end faces of the first component section and the second component section are arranged with an inclination. Such an arrangement has a certain tolerance for the errors in the construction and installation positions of the components and the distance between the components that must exist in practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a schematic diagram of the overall structure of the connector of this application.

[0051] Figure 2 This is a schematic diagram of the connection node structure of this application.

[0052] Figure 3 This is a schematic diagram of the connection node decomposition structure of this application.

[0053] Figure 4This is a schematic structural diagram of the first connecting portion and the second connecting portion of the hoop body presented in the present application.

[0054] Figure 5 This is a schematic structural diagram of the first connecting portion and the second connecting portion in an I-shape of the present application.

[0055] Figure 6 This is a schematic diagram of the structure when the connecting member of the present application is applied to prefabricated building beams.

[0056] Description of reference numerals:

[0057] 1. First connecting part; 2. Second connecting part; 3. Snap plate; 4. First connecting plate; 41. First opening; 5. First anti-shear rib; 6. Second connecting plate; 61. Second opening; 7. Second anti-shear rib; 8. Sloped surface; 9. Snap groove; 10. First locking bolt; 11. Second locking bolt; 12. Abutment block; 13. First side plate; 14. Second side plate; 131. First vertical plate; 134. Vertical plate connecting plate; 141. Second vertical plate; 15. First component section; 16. Second component section; 17. Filling cavity; 18. Shear block. DETAILED DESCRIPTION

[0058] The following is combined with Figure 1-5 This application is described in further detail.

[0059] like Figure 1 As shown, a beam connector disclosed in the present application includes a first connecting portion 1 connected to a building beam, a second connecting portion 2 connected to another building beam, and a snap plate 3. The first connecting portion 1 and the second connecting portion 2 are connected by the snap plate 3 and fixed with bolts, so that a quick and stable connection of two building components can be achieved.

[0060] like Figure 2 , 3 As shown, the first connection part 1 is at least arranged on the upper side and the lower side of a beam end. The first connection part 1 includes a first connection plate 4, and a first anti-shear rib 5 is arranged at the end of the first connection plate 4. The first anti-shear rib 5 is staggered with the end surface of the first connection plate 4 to form a first opening 41.

[0061] The second connection part 2 is corresponding to the first connection part 1 and is arranged on the upper side and the lower side of the other beam end. The second connection part 2 includes a second connection plate 6. A second shear rib 7 is arranged at the end of the second connection plate 6. The second shear rib 7 and the end surface of the second connection plate 6 are staggered to form a second opening 61. A slope surface 8 is arranged at one position away from each other on one side of the first shear rib 5 and the second shear rib 7. In this embodiment, the slope surface 8 is arranged on both sides.

[0062] The buckle plate 3 has a buckle groove 9 formed therein, and the two side walls of the buckle groove 9 are arranged as slope surfaces 8 corresponding to the first anti-shear rib 5 and the second anti-shear rib 7 and having the same angle, and the buckle plate 3 is connected to the first connecting portion 1 and the second connecting portion 2 through fasteners. Such arrangement is to allow the buckle groove 9 to have a larger opening size, so that the first anti-shear rib 5 and the second anti-shear rib 7 can easily enter the buckle groove 9, and as the buckle plate 3 gradually approaches the first connecting plate 4, the distance between the slope surfaces gradually decreases, and the buckle plate 3 applies pre-compression stress to the first anti-shear rib 5 and the second anti-shear rib 7.

[0063] like Figure 2 As shown, in addition, there is a first gap L1 between the bottom of the buckle groove 9 and the first anti-shear rib 5 and the second anti-shear rib 7, and there is a second gap L2 between the buckle plate 3 and the first anti-shear rib 5 and the second anti-shear rib 7, and L1>L2. As set above, the buckle plate 3, the first anti-shear rib 5, and the second anti-shear rib 7 are prevented from being hindered when moving.

[0064] In addition, when the first connection part 1 and the second connection part 2 are connected to the corresponding prefabricated building beam, there is a gap between the first connection part 1 and the second connection part 2. During the process of tightening the bolt, the gap will gradually decrease.

[0065] The clip plate 3 is connected to the first connection part 1 and the second connection part 2 through the first locking bolts 10. The first locking bolts 10 are arranged in at least two rows in the middle of the clip plate 3 and are arranged through the clip plate 3 on both sides of the clip groove 9. The first locking bolts 10 on one side pass through the clip plate 3 and are screwed to the first anti-shear rib 5. The first locking bolts 10 on the other side pass through the clip plate 3 and are screwed to the second anti-shear rib 7.

[0066] Due to the existence of the slope surface 8, during the locking process of the first locking bolt 10, the snap plate 3 will move toward the first connection part 1 and the second connection part 2, and the inner side walls of the snap plate 3 on both sides squeeze the first shear rib 5 and the second shear rib 7 slope surface 8, so that the first shear rib 5 and the second shear rib 7 are squeezed toward each other, so that the first connection part 1 and the second connection part 2 have a tendency to approach each other, thereby forming a prestressed connection node. The greater the locking force of the first locking bolt 10, the greater the prestressed connection node. Compared with the prior art, the processing error can be eliminated, so that the connection piece has a certain tolerance.

[0067] A second locking bolt 11 may also be provided on the snap plate 3, and the second locking bolt 11 passes through both ends of the snap plate 3 and is screwed to the first connecting plate 4 and the second connecting plate 6. The second locking bolt 11 is provided to improve the connection strength between the snap plate 3 and the first connecting part 1 and the second connecting part 2.

[0068] The holes through which the first locking bolt 10 and the second locking bolt 11 pass are both long holes, and the extending direction of the long holes is parallel to the direction in which the first connecting part 1 and the second connecting part 2 approach each other during the installation process. The provision of the long holes allows a certain adjustment space for the first locking bolt 10 and the second locking bolt 11 to accommodate the distance error that is inevitable during the installation process.

[0069] like Figure 1 , 2 As shown, further, an abutment block 12 is also provided between the first anti-shear rib 5 and the second anti-shear rib 7, and the abutment block 12 is also located in the buckle groove 9. The abutment block 12 can be placed between the first anti-shear rib 5 and the second anti-shear rib 7 before the buckle plate 3 is set, and the buckle plate 3 drives the first anti-shear rib 5 and the second anti-shear rib 7 to contact the abutment block 12 during the process of tightening the first locking bolt 10 and the second locking bolt 11. The abutment block 12 can also be inserted between the first anti-shear rib 5 and the second anti-shear rib 7 by hammering after the buckle plate 3 is installed. At this time, the end of the abutment block 12 needs to be chamfered to facilitate the insertion of one end first. The abutment block 12 can also be a block that cannot be inserted originally, and its size is reduced by cooling and then inserted. After the temperature is restored, the abutment block 12 abuts against the inner wall of the first anti-shear rib 5 and the second anti-shear rib 7 to form an interference fit.

[0070] like Figure 4 As shown, in one embodiment, the first connecting part 1 includes a hoop body formed by connecting two first connecting plates 4 and two first side plates 13 disposed opposite to each other in sequence, and the second connecting part 2 includes a hoop body formed by connecting two second connecting plates 6 and two second side plates 14 disposed opposite to each other in sequence. The hoop body can be used to surround and connect to the end of the beam, so that the connection between the connecting piece and the building component is more stable.

[0071] In addition, the end of the first connection part 1 has an angle of β, that is, the end of the first side plate 13 is inclined at an angle of β. The end of the second connection part 2 has an angle of i, that is, the end of the second side plate 14 is inclined at an angle i. And ∠β<∠i, so as to facilitate the correspondence with a specific prefabricated building beam with an inclined end face.

[0072] like Figure 5As shown, in another embodiment, the first connecting portion 1 includes two first connecting plates 4 arranged opposite to each other and a first vertical plate 131 arranged between the two first connecting plates and connected to the two first connecting plates, the second connecting portion 2 includes two second connecting plates 6 arranged opposite to each other and a second vertical plate 141 arranged between the two second connecting plates 6 and connected to the two second connecting plates, and the first vertical plate and the second vertical plate are connected by a vertical plate connecting plate 134 arranged on at least one side. The end connector of the prefabricated component arranged in this way has an open cross-section, which is convenient for pouring concrete or grouting material on the surface of the connector at a later time. In addition, the single vertical plate connecting plate between the first connecting plate 4 and the second connecting plate 6 can be connected by a vertical plate connecting plate 134, and the connection can provide shear bearing capacity under construction conditions and normal use conditions. As shown Figure 6 As shown, the present application also discloses a prefabricated building beam, including a beam connector, and also including two first component segments 15 and a second component segment 16, wherein the second component segment 16 is located between the two first component segments 15. The first connecting portion 1 is a hoop body, and surrounds the end of the first component segment 15, and the second connecting portion 2 is also a hoop body, and surrounds the end of the second connecting portion 2.

[0073] The end face of the first component segment 15 is an inclined surface obliquely upward, and the angle of the inclined surface is β, and the end faces of the second component segment 16 are inclined surfaces obliquely downward, and the angle of the inclined surface is i. As a result, the space between the two opposite end faces of the two first component segments 15 is large at the top and small at the bottom, and the second component segment 16 is set to be large at the top and small at the bottom. Through such a setting, after the first component segment 15 and the second component segment 16 are connected, an oblique filling cavity 17 is formed between the ends, and the filling cavity 17 is large at the top and small at the bottom, and a wedge-shaped shear block 18 is also provided in the filling cavity 17. During the installation process, after the shear block 18 is inserted into the upper part of the filling cavity 17, the shear block 18 will move downward until it is squeezed tightly with the two side walls of the filling cavity 17. The shear block 18 contacts the ends of the first component segment 15 and the second component segment 16, so that any displacement of the second component segment 16 can be transmitted to the first component segment 15 through the shear block 18, thereby forming the shear bearing capacity of the connection node.

[0074] In addition, one of the first connecting plates 4 in the first connecting part 1 is located at the lower part of the first component segment 15, and the end of the first connecting plate 4 exceeds the lower part of the first component segment 15. In contrast, the lower part of the second connecting part 2 has a second connecting plate 6, and the end of the second connecting plate 6 is contracted inward compared to the end of the second component segment 16, and the end of the second component segment 16 is overlapped on the first connecting plate 4.

[0075] By such arrangement, firstly, the first connecting plate 4 can be used as the bottom plate of the filling cavity 17 to support the slurry injected into the filling cavity 17, and secondly, the first connecting plate 4 can be used as a component for temporarily overlapping and supporting the second component segment 16 during the construction process.

[0076] By filling the filling cavity 17 with slurry, the connection between the first connection portion 1 and the second connection segment can be made more stable. The shear block 18 is provided so that after the shear block 18 is inserted into the upper part of the filling cavity 17, the shear block 18 will move downward until it is squeezed tightly against the two side walls of the filling cavity 17. The shear block 18 contacts the ends of the first component segment 15 and the second component segment 16, so that any displacement of the second component segment 16 can be transmitted to the first component segment 15 through the shear block 18, so that the connection node has shear bearing capacity, that is, the initial shear bearing capacity of the beam during construction conditions is formed, which can avoid dependence on support during construction.

[0077] Specific construction method:

[0078] S1: hoist and install two first component segments 15 to keep them horizontal and at the same height;

[0079] S2: hoist a second component segment 16, lower it from the height between the two first component segments 15 to keep it level with the first component segment 15, and temporarily overlap the end of the second component segment 16 on the first connecting plate 4;

[0080] S3: placing the shear block 18 in the filling cavity 17, so that the shear block 18 contacts the end surfaces of the first component segment 15 and the second component segment 16;

[0081] Or the first vertical plate 131 and the second vertical plate 141 are connected by using the vertical plate connecting plate 134;

[0082] S4: inserting the abutment block 12 between the first opening 41 and the second opening 61 of the first anti-shear rib 5 and the second anti-shear rib 7;

[0083] S5: Connect the snap plate 3 with the first connecting part 1 and the second connecting part 2 by using the first locking bolt 10 and the second locking bolt 11;

[0084] S6: Fill the filling cavity 17 with slurry, and after the slurry solidifies, the shear resistance of the connection node can be further enhanced. The slurry can be a flowable and castable material with enhanced strength after solidification, such as concrete and mortar.

[0085] In another embodiment, the order of S4 and S5 can be interchanged. When the abutment block 12 is first inserted between the first anti-shear rib 5 and the second anti-shear rib 7, and then the first locking bolt 10 and the second locking bolt 11 are tightened, the buckle plate 3 will move toward the first connection part 1 and the second connection part 2, and the inner side walls on both sides of the buckle plate 3 squeeze the first anti-shear rib 5 and the second anti-shear rib 7 slope surface 8, so that the first anti-shear rib 5 and the second anti-shear rib 7 are squeezed toward each other, so that the first connection part 1 and the second connection part 2 have a tendency to approach each other, thereby forming a pre-compression stress of the connection node.

[0086] Through the above arrangement, the first component segment 15 and the second component segment 16 can be quickly connected, and the connection node can be made resistant to bending. In addition, compared with the prior art, the processing error can be eliminated, and the connection piece can have a certain tolerance. Furthermore, compared with the prior art, the two prefabricated building components can be connected faster, and there is no need to wait for the cast-in-place slurry to solidify, thereby improving the construction efficiency.

[0087] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A beam connector, characterized in that: Connection to beams, including: A first connecting portion (1) is disposed at the upper side and the lower side of an end of a beam, the first connecting portion (1) comprising a first connecting plate (4), the end of the first connecting plate (4) being provided with a first anti-shear rib (5), the first anti-shear rib (5) being staggered with the end surface of the first connecting plate (4) to form a first opening (41); A second connecting portion (2) is disposed on the upper side and the lower side of the other beam end portion, corresponding to the first connecting portion (1); the second connecting portion (2) comprises a second connecting plate (6); a second shear rib (7) is disposed at the end of the second connecting plate (6); the second shear rib (7) and the end surface of the second connecting plate (6) are staggered to form a second opening (61); a slope surface (8) is disposed at a position on one side away from the first shear rib (5) and the second shear rib (7); There is a gap between the first connecting portion (1) and the second connecting portion (2); A snap plate (3), wherein a snap groove (9) is arranged in the snap plate (3), and two side walls of the snap groove (9) are arranged as slope surfaces (8) corresponding to the first anti-shear rib (5) and the second anti-shear rib (7), and the snap plate (3) is connected to the first connecting part (1) and the second connecting part (2) via a fastener; There is a gap between the snap plate (3) and the first connecting plate (4) and the second connecting plate (6), and during the process of tightening the fastener, the first connecting portion (1) and the second connecting portion (2) tend to approach each other.

2. The beam connector according to claim 1, characterized in that: It also comprises an abutment block (12), wherein the abutment block (12) abuts between the first opening (41) and the second opening (61), and is located in the buckle groove (9).

3. The beam connector according to claim 1, characterized in that: The fastener comprises at least two first locking bolts (10), and the first locking bolts (10) pass through the snap plate (3) and are connected to the first anti-shear rib (5) and the second anti-shear rib (7).

4. The beam connector according to claim 3, characterized in that: The fastener comprises at least two second locking bolts (11), and the second locking bolts (11) pass through two ends of the buckle plate (3) and are connected to the first connecting plate (4) and the second connecting plate (6).

5. The beam connector according to claim 4, characterized in that: The holes through which the first locking bolt (10) and the second locking bolt (11) pass on the buckle plate (3) are both long holes.

6. The beam connector according to claim 1, characterized in that: The first connecting portion (1) comprises a hoop body formed by connecting two first connecting plates (4) and two first side plates (13) arranged opposite to each other in sequence, and the second connecting portion (2) comprises a hoop body formed by connecting two second connecting plates (6) and two second side plates (14) arranged opposite to each other in sequence; or the first connecting portion (1) comprises two first connecting plates (4) arranged opposite to each other and a first vertical plate (131) arranged between the two first connecting plates (4) and connected to the two first connecting plates (4), and the second connecting portion (2) comprises two second connecting plates (6) arranged opposite to each other and a second vertical plate (141) arranged between the two second connecting plates (6) and connected to the two second connecting plates (6), and the first vertical plate (131) and the second vertical plate (141) are connected via a vertical plate connecting plate (134) arranged on at least one side.

7. The beam connector according to claim 6, characterized in that: The end of the first connecting portion (1) has an oblique angle of angle β, the end of the second connecting portion (2) has an oblique angle of angle i, and ∠β<∠i, ∠β and ∠i are angles measured clockwise from the first connecting plate (4) at the bottom of the first connecting portion (1).

8. A prefabricated building beam having a beam connector according to any one of claims 6 to 7, characterized in that: It comprises a first component segment (15) and a second component segment (16), wherein the first connecting portion (1) is arranged at the end of the first component segment (15), and the second connecting portion (2) is arranged at the end of the second component segment (16).

9. The prefabricated building beam with beam connector according to claim 8, characterized in that: A first connecting plate (4) is located at the lower part of the first component section (15) and exceeds the lower part of the first component section (15), and the end of the second component section (16) is overlapped on the first connecting plate (4).

10. The prefabricated building beam with beam connector according to claim 8, characterized in that: Both ends of the second component segment (16) are correspondingly connected to the first component segment (15), the space between the two opposite end surfaces of the two first component segments (15) is larger at the top and smaller at the bottom, and the second component segment (16) is configured to have a larger size at the top and smaller size at the bottom.

11. The prefabricated building beam with beam connector according to claim 10, characterized in that: A filling cavity (17) is formed between the ends of the first component segment (15) and the second component segment (16); the filling cavity (17) is a cavity that opens obliquely upward, and the filling cavity (17) is larger at the top and smaller at the bottom.

12. The prefabricated building beam with beam connector according to claim 11, characterized in that: A wedge-shaped shear block (18) is arranged in the filling cavity (17), and the wedge-shaped shear block (18) contacts the ends of the first component segment (15) and the second component segment (16).

13. A construction method for a prefabricated building beam with a beam connector according to claim 12, characterized in that: The method comprises the following construction steps: S1: hoisting and installing two first component segments (15) so that they are kept horizontal and at the same height; S2: hoisting a second component segment (16), lowering it from a high position between the two first component segments (15) to keep it horizontal with the first component segment (15), and temporarily overlapping the end of the second component segment (16) on the first connecting plate (4); S3: placing a shear block (18) in the filling cavity (17), and making the shear block (18) and the first component segment (16) overlap each other; 15) and the end faces of the second component segment (16); or the first vertical plate (131) and the second vertical plate (141) are connected by using a vertical plate connecting plate (134); S4: inserting an abutment block (12) between the first opening (41) and the second opening (61); S5: connecting the snap plate (3) and the first connecting portion (1) and the second connecting portion (2) by using a first locking bolt (10) and a second locking bolt (11); S6: filling slurry in the filling cavity (17).

14. A construction method for prefabricated building beams with beam connectors according to claim 13, characterized in that: Steps S4 and S5 are swapped in order.

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