Novel prefabricated concrete component assembly joint

Abstract

The utility model discloses a novel prefabricated concrete component assembly node, which is used for connecting vertical prefabricated components and a prefabricated beam and connecting the vertical prefabricated components up and down, and comprises a lower layer steel connecting component which is fixedly arranged at the top end of the vertical prefabricated components and corresponds to a lower steel bar part in the prefabricated beam, lower steel bars in the precast beam are fixedly connected with lower transverse connecting plates which correspond to the lower-layer steel connecting pieces and extend out of the ends of the precast beam, the lower-layer steel connecting pieces are provided with lower connecting structures used for bearing and fixedly connecting the lower transverse connecting plates, and upper steel bars in the precast beam are fixedly connected with upper connecting structures. Various prefabricated parts can be simply, conveniently, rapidly and reliably connected at joints, the site workload is small, the construction difficulty is small, construction potential safety hazards caused by additionally arranging supports are avoided, construction is rapid and efficient, and the installation and construction period is short.

Description

Technical Field

[0001] The utility model relates to the assembly technology of concrete precast components, in particular to a novel assembly joint of concrete precast components. Background Art

[0002] At present, the precast components used in prefabricated buildings include vertical precast components such as precast concrete columns and precast concrete shear walls, and horizontal precast components such as precast concrete beams. Among them, precast concrete columns are mostly precast with multiple columns of vertical stress-bearing steel bars arranged horizontally, multiple layers of stirrups connecting and restraining the vertical stress-bearing steel bars, and concrete. Precast concrete shear walls are mostly precast with multiple columns of horizontal and vertical stress-bearing steel bars arranged horizontally and vertically in a crosswise manner and concrete. Precast concrete beams are precast with multiple layers of steel bars arranged vertically, multiple columns of stirrups connecting and restraining the multiple layers of steel bars, and concrete. At present, when the above precast components are assembled and connected, it is mainly the vertical assembly connection of precast concrete columns and the connection of precast concrete beams and precast concrete columns. The specific assembly is as follows:

[0003] Such as Figure 37As shown, the precast concrete columns are assembled and connected with the precast concrete columns, and the lower end of the vertical stress-bearing steel bars 1 of the upper column is connected with a steel sleeve 4, and the upper end of the vertical stress-bearing steel bars 1 of the lower column extends out. During installation, bonding mortar 4 is first spread on the top surface of the lower column, and the space between the lower column and the upper column is filled with mortar. The steel sleeve 4 at the lower end of the upper column is aligned with the vertical stress-bearing steel bars 1 extending out of the lower column, and the vertical stress-bearing steel bars 1 are inserted into the corresponding steel sleeve 4. The plane position of the upper column is aligned, and after the verticality is aligned, it is temporarily fixed firmly with a steel support, and then the grouting port at the lower end of each steel sleeve 4 is injected with bonding mortar. When the grouting port at the upper end overflows, the mortar is filled. This type of assembly node has the following defects: the protruding end of the vertical stress-bearing steel bar 1 of the lower column is at the bottom, and the insertion port of the steel bar sleeve 4 is at the top. During installation, it is impossible to observe whether the vertical stress-bearing steel bar 1 of the lower column is aligned. If one of the steel bars is not aligned, it cannot be installed, which causes great difficulty in installation; at the same time, the steel bar sleeve 4 of each steel bar needs to be injected with grouting device separately. The on-site injection operation is cumbersome and the amount of injection is large. The quality of the injection is difficult to guarantee. It is easy for the steel bar sleeve 4 to be not fully injected, thereby affecting the structural safety of the connection. The precast concrete beam is assembled and connected with the precast concrete column. The upper connecting steel bar 18 and the lower connecting steel bar 19 extending out of the lower column are respectively embedded in the connection position between the upper end of the lower column and the beam. The ends of the upper connecting steel bar 18 and the lower connecting steel bar 19 are first inserted into the steel sleeve 4, and the steel bars in the precast concrete beam extend out of the end of the precast concrete beam. When the precast concrete beam is installed, a temporary support is first added under the precast concrete beam to align the beam with the column-beam connection position, and the steel sleeve 4 is slid from the upper connecting steel bar 18 and the lower connecting steel bar 19 to the corresponding protruding ends of the precast concrete beam steel bars, and then glue is filled into the steel sleeve 4 from the grouting port to realize the connection between the beam steel bar and the column connecting steel bar, and finally the stirrups 17 are tied to the connection position, and concrete is poured to realize the assembly connection between the precast concrete beam and the precast concrete column. This type of assembly node has the following defects: first, a large number of temporary supports need to be added to the bottom of this type of assembly beam, which requires a large amount of on-site work, and the support elevation position must be precise, the construction is difficult, the technical requirements are high, the cost is high, and there are hidden safety hazards in on-site construction; second, the steel sleeve 4 connection requires the upper connecting steel bar 18 and the lower connecting steel bar 19 extending from the column to be extended to a sufficient length to ensure the seismic performance of the beam end, resulting in the need to reserve a larger size for the connection part, resulting in an increase in on-site construction volume and construction costs; third, the temporary support can only be removed after the post-poured concrete at the connection part reaches the design strength, which greatly extends the installation construction period. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a new type of concrete prefabricated component assembly node which is simple to install on site, fast and efficient in construction, short in cycle and reliable in force.

[0005] To solve the above technical problems, the technical solution of the present utility model is: a new type of assembly joint for concrete precast components, which is used for connecting vertical precast components and precast beams, including a lower steel connecting piece fixedly arranged at the corresponding position of the top end of the vertical precast component and the lower part of the steel bars in the precast beam. The lower steel bars in the precast beam are fixedly connected with a lower horizontal connecting plate corresponding to the lower steel connecting piece and extending out of the end of the precast beam. The lower steel connecting piece is provided with a lower connecting structure for supporting and fixedly connecting the lower horizontal connecting plate. The upper steel bars in the precast beam are fixedly connected with an upper connecting structure.

[0006] As a preferred technical solution, there are at least two vertical precast components arranged up and down. The top ends of the vertical stress-bearing steel bars in the vertical precast components pass through the lower steel connecting piece and are respectively connected with steel bar sleeves. The bottom ends of the vertical stress-bearing steel bars in the vertical precast components extend out of the bottom of the vertical precast component and correspond to the steel bar sleeves on the upper steel bars of the lower-side vertical precast component one by one. And the extending ends of the stress-bearing steel bars at the bottom of the upper-side vertical precast component are inserted into the corresponding steel bar sleeves.

[0007] As a preferred technical solution, the lower connecting structure includes a lower outward-extending connecting plate welded to the outer end of the lower steel connecting piece. The bottom of the lower steel connecting piece and the lower outward-extending connecting plate are provided with a stiffening support structure. The lower horizontal connecting plate is supported on the upper side of the lower outward-extending connecting plate and fixedly connected through a lower bolt connecting structure.

[0008] As a preferred technical solution, the lower bolt connecting structure includes corresponding connecting holes respectively arranged on the lower horizontal connecting plate and the lower outward-extending connecting plate. A nut embedded in the precast beam is fixedly arranged at the connecting hole on the lower horizontal connecting plate. The lower horizontal connecting plate is supported on the upper side of the lower outward-extending connecting plate and fixedly connected with the nut through a bolt passing through the connecting hole.

[0009] As a preferred technical solution, the stiffening support structure includes a vertical stiffening plate embedded in the vertical precast component with its end extending out of the vertical precast component. The vertical stiffening plate is welded to the lower steel connecting piece and the lower outward-extending connecting plate.

[0010] As a preferred technical solution, the stiffening support structure includes a pre-embedded stiffening plate embedded on the side of the vertical precast component and welded to the lower steel connecting piece. Anchor bars welded to the pre-embedded stiffening plate are embedded in the vertical precast component. A vertical stiffening plate is welded between the pre-embedded stiffening plate and the lower outward-extending connecting plate.

[0011] As a preferred technical solution, the upper connecting structure includes an upper steel connecting piece arranged at the corresponding position of the upper part of the steel bars in the precast beam on the upper side of the lower steel connecting piece. The steel bar sleeve passes through the upper steel connecting piece and is welded to the upper steel connecting piece. The upper steel bars in the precast beam are fixedly connected with an upper horizontal connecting plate extending out of the end of the precast beam. The upper horizontal connecting plate is fixedly connected with the upper steel connecting piece.

[0012] As a preferred technical solution, the upper horizontal connecting plate is fixedly connected to the outer end of the upper steel connecting piece by welding.

[0013] As a preferred technical solution, an upper outward extending connecting plate is welded to the outer end of the upper steel connecting piece. The upper horizontal connecting plate is supported on the upper side of the upper outward extending connecting plate and fixedly connected by an upper bolt connection structure.

[0014] As a preferred technical solution, the outer end of the upper steel connecting piece extends out of the side of the vertical precast member and is fixedly provided with a connecting flange plate. The outer end of the upper horizontal connecting plate is provided with a beam flange plate corresponding to the connecting flange plate. The mutually corresponding beam flange plate and connecting flange plate are fixedly connected by an upper bolt connection structure.

[0015] As a preferred technical solution, the outer end of the upper steel connecting piece extends out of the side of the vertical precast member and is fixedly provided with a connecting flange plate. At least two vertical connecting plates extending out of the end of the precast beam are respectively fixedly connected to the upper part of the steel bars in each precast beam. The outer end of each vertical connecting plate is fixedly connected to a beam flange plate corresponding to the connecting flange plate. The mutually corresponding beam flange plate and connecting flange plate are fixedly connected by an upper bolt connection structure.

[0016] As a preferred technical solution, the outer end of the upper steel connecting piece extends out of the side of the vertical precast member and is fixedly provided with a connecting flange plate. A vertical connecting plate extending out of the end of the precast beam is fixedly connected to the upper part of the steel bars in each precast beam. Transverse plates welded to the vertical connecting plate are respectively embedded on both sides of the vertical connecting plate in the precast beam. The outer end of each vertical connecting plate is fixedly connected to a beam flange plate corresponding to the connecting flange plate. The mutually corresponding beam flange plate and connecting flange plate are fixedly connected by an upper bolt connection structure.

[0017] As a preferred technical solution, the lower steel connecting piece and the upper steel connecting piece are respectively connected to a lower connecting structure and an upper connecting structure at the same-side end of the vertical precast member, and transverse anchor plates are respectively welded to the other ends of the lower steel connecting piece and the upper steel connecting piece.

[0018] As a preferred technical solution, the upper connecting structure includes the upper parts of the steel bars in two precast beams on the opposite sides of the vertical precast member passing through the upper part of the vertical precast member, and the upper parts of the steel bars are arranged alternately with the steel bar sleeves. Multiple closed reinforcing stirrups for restricting the bending of the upper parts of the steel bars are provided at the bending positions of the upper parts of the steel bars in the precast beams.

[0019] As a preferred technical solution, the upper connecting structure includes horizontal connecting plates respectively fixedly connected to the upper parts of the steel bars in each precast beam and extending out of the end of the precast beam. Each horizontal connecting plate extends into the top of the vertical precast member and is butt-welded.

[0020] As a preferred technical solution, the upper connection structure includes horizontal connecting plates respectively fixedly connected to the upper reinforcement bars in each precast beam, extending out of the end of the precast beam and extending into the top of the vertical precast member. Corresponding beam flange plates are respectively fixedly provided at the outer edges of adjacent horizontal connecting plates, and the corresponding beam flange plates on adjacent horizontal connecting plates are fixedly connected through an upper bolt connection structure.

[0021] As a preferred technical solution, the upper connection structure includes horizontal connecting plates respectively fixedly connected to the upper reinforcement bars in each precast beam, extending out of the end of the precast beam and extending into the top of the vertical precast member. An intermediate connecting plate is arranged inside the top of the vertical precast member. Connecting flange plates are fixedly provided on the periphery of the intermediate connecting plate. The outer ends of each horizontal connecting plate are fixedly connected with beam flange plates corresponding to the connecting flange plates, and the corresponding beam flange plates and connecting flange plates are fixedly connected through an upper bolt connection structure.

[0022] As a preferred technical solution, the upper connection structure includes at least two vertical connecting plates respectively fixedly connected to the upper reinforcement bars in each precast beam, extending out of the end of the precast beam. Each vertical connecting plate extends into the top of the vertical precast member for butt welding or welding with an intermediate connector.

[0023] As a preferred technical solution, the upper connection structure includes a vertical connecting plate fixedly connected to the upper reinforcement bar in each precast beam and extending out of the end of the precast beam. Transverse plates welded to the vertical connecting plate are respectively embedded on both sides of the vertical connecting plate in the precast beam. Each vertical connecting plate extends into the top of the vertical precast member for butt welding or welding with an intermediate connector.

[0024] As a preferred technical solution, connecting sleeves are respectively fixedly connected to the end parts of the waist reinforcement bars in two relatively arranged precast beams. An anchor bar is threadedly connected between the corresponding two connecting sleeves. A casting key groove is arranged at the end of the precast beam.

[0025] The novel precast concrete component assembly joint adopting the above technical solution is used for connecting vertical precast components and precast beams, and includes a lower steel connecting piece fixedly arranged at the corresponding position of the top end of the vertical precast component and the lower part of the steel bars in the precast beam. The lower steel bars in the precast beam are fixedly connected with a lower transverse connecting plate corresponding to the lower steel connecting piece and extending out of the end of the precast beam. The lower steel connecting piece is provided with a lower connecting structure for supporting and fixedly connecting the lower transverse connecting plate. The upper steel bars in the precast beam are fixedly connected with an upper connecting structure. The utility model can realize simple, convenient, fast and reliable connection of various precast components such as precast concrete columns and precast concrete columns, precast concrete shear walls and precast concrete shear walls at the joint, and can also realize fast and reliable connection without support between precast concrete columns or shear walls and precast concrete beams, as well as between beams. Through the lower connecting structure, the lower steel connecting piece supports and fixedly connects the lower transverse connecting plate of the precast beam, with reliable force. When assembling and connecting the precast beam, no additional support is required, the on-site workload is small, the construction difficulty is small, the cost is low, there is no construction safety hazard brought by adding support, the construction is fast and efficient, and the installation and construction period is short. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the present utility model;

[0027] Figure 2 is a schematic diagram of the lower bolt connection structure of the present utility model;

[0028] Figure 3 is a schematic top view of the top of the vertical precast component of the present utility model;

[0029] Figure 4 is a schematic bottom view of the bottom of the vertical precast component of the present utility model;

[0030] Figure 5 is a schematic end view of the precast beam of the present utility model;

[0031] Figure 6 is a schematic top view of the installation of the upper steel connecting piece at the assembly joint of the present utility model;

[0032] Figure 7 is a schematic top view of the welding installation of the horizontal connecting plate at the assembly joint of the present utility model;

[0033] Figure 8 is a schematic diagram of the vertical stiffening rib welded to the horizontal connecting plate at the assembly joint of the present utility model;

[0034] Figure 9 is Figure 8 the schematic A-A structure diagram in

[0035] Figure 10 is a schematic diagram of the bolt connection installation of the horizontal connecting plate at the assembly joint of the present utility model;

[0036] Figure 11 It is a top view schematic diagram of bolt connection of the horizontal connecting plate at the assembly node of the present utility model;

[0037] Figure 12 It is an assembly schematic diagram of the lower half of the precast beam of the present utility model;

[0038] Figure 13 is Figure 12 Schematic diagram in the B-B direction at the medium-matching node;

[0039] Figure 14 It is a schematic diagram of welding vertical stiffeners on the upper steel connector at the assembly node of the present utility model;

[0040] Figure 15 It is a schematic diagram of an embodiment of welding two vertical connecting plates with an intermediate connector of the present utility model;

[0041] Figure 16 It is a schematic diagram of another embodiment of welding two vertical connecting plates with an intermediate connector of the present utility model;

[0042] Figure 17 It is a schematic diagram of butt welding of two vertical connecting plates of the present utility model;

[0043] Figure 18 is Figure 15 Schematic diagram of the C-C structure;

[0044] Figure 19 It is a schematic diagram of butt welding of a vertical connecting plate of the present utility model;

[0045] Figure 20 It is a schematic diagram of an embodiment of welding a vertical connecting plate with an intermediate connector of the present utility model;

[0046] Figure 21 is Figure 20 Schematic diagram of the D-D structure;

[0047] Figure 22 It is a schematic diagram of the structure with the vertical stiffener disconnected of the present utility model;

[0048] Figure 23 It is a schematic diagram of the connection structure of the single-sided precast beam of the present utility model;

[0049] Figure 24 It is a schematic diagram of the structure of the first embodiment of the upper and lower double-layer bolt connection of the precast beam of the present utility model;

[0050] Figure 25 It is a schematic diagram of the structure of the second embodiment of the upper and lower double-layer bolt connection of the precast beam of the present utility model;

[0051] Figure 26It is a top - view schematic diagram of the second embodiment of the double - layer bolt connection between the upper and lower precast beams of the present utility model;

[0052] Figure 27 It is a structural schematic diagram of the third embodiment of the double - layer bolt connection between the upper and lower precast beams of the present utility model;

[0053] Figure 28 It is a top - view schematic diagram of the third embodiment of the double - layer bolt connection between the upper and lower precast beams of the present utility model;

[0054] Figure 29 It is a structural schematic diagram of the fourth embodiment of the double - layer bolt connection between the upper and lower precast beams of the present utility model;

[0055] Figure 30 It is a top - view schematic diagram of the fourth embodiment of the double - layer bolt connection between the upper and lower precast beams of the present utility model;

[0056] Figure 31 It is a structural schematic diagram of the fifth embodiment of the double - layer bolt connection between the upper and lower precast beams of the present utility model;

[0057] Figure 32 It is a top - view schematic diagram of the fifth embodiment of the double - layer bolt connection between the upper and lower precast beams of the present utility model;

[0058] Figure 33 It is a structural schematic diagram of the connection structure between the precast main beam and the secondary beam of the present utility model;

[0059] Figure 34 It is a structural schematic diagram of the main beam with the unilateral connection between the precast main beam and the secondary beam of the present utility model;

[0060] Figure 35 It is a structural schematic diagram of the precast secondary beam and the post - cast composite - layer beam of the present utility model;

[0061] Figure 36 It is an alignment assembly schematic diagram of the precast beam of the present utility model;

[0062] Figure 37 It is an assembly connection schematic diagram of a precast column or wall and a precast beam in the prior art.

[0063] In the figure: 100 - vertical precast member; 200 - precast beam; 1 - vertical stress-bearing steel bar; 2 - lower steel connector; 3 - stud; 4 - reinforcing bar sleeve; 5 - bonding mortar; 6 - lower extended connecting plate; 7 - connecting hole; 8 - bolt; 9 - nut; 10 - vertical stiffening plate; 11 - embedded stiffening plate; 12 - anchoring bar; 13 - upper steel connector; 14 - concrete pouring hole; 15 - upper extended connecting plate; 16 - transverse anchor plate; 17 - stirrup; 18 - upper connecting steel bar; 19 - lower connecting steel bar; 21 - lower steel bar; 22 - lower transverse connecting plate; 23 - upper steel bar; 24 - upper transverse connecting plate; 25 - vertical stiffening rib; 26 - closed reinforcing stirrup; 27 - horizontal connecting plate; 28 - vertical connecting plate; 29 - intermediate connector; 210 - connecting sleeve; 211 - anchor bar; 212 - pouring keyway; 213 - precast main beam; 214 - precast secondary beam; 215 - post-cast composite layer beam; 216 - waist bar; 217 - transverse plate; 218 - pouring gap; 219 - post-cast concrete; 220 - beam flange plate; 221 - connecting flange plate; 222 - intermediate connecting plate; 223 - upper bolt connection structure. Detailed implementation manners

[0064] For a clearer understanding of the technical features, objectives, and effects of the present utility model, the specific implementation manners of the present utility model will now be described with reference to the accompanying drawings.

[0065] As Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the novel assembly joint of precast concrete components is used for connecting the vertical precast member 100 and the precast beam 200. The vertical precast member 100 can be a precast concrete column, a precast concrete shear wall, etc. In the present utility model, the vertical precast member 100 is a precast concrete column and the precast beam 200 is a precast concrete beam, which are described as specific embodiments. This assembly joint of precast concrete components includes a lower steel connector 2 fixedly arranged at the corresponding position of the upper end of the vertical precast member 100 and the lower part of the reinforcement 21 in the precast beam 200. A reserved hole for the vertical stress reinforcement 1 in the vertical precast member 100 to pass through can be opened in the lower steel connector 2, and stud bolts 3 for tying with the precast member are welded on the upper and lower surfaces of the lower steel connector 2 to ensure the firmness of the lower steel connector 2. The lower horizontal connecting plate 22 corresponding to the lower steel connector 2 and extending out of the end of the precast beam 200 is fixedly connected to the lower part of the reinforcement 21 in the precast beam 200. The lower horizontal connecting plate 22 can be fixedly welded to the lower part of the reinforcement 21 in the precast beam 200. The lower steel connector 2 is provided with a lower connecting structure for supporting and fixedly connecting the lower horizontal connecting plate 22. The upper part of the reinforcement 23 in the precast beam 200 is fixedly connected with an upper connecting structure. The upper connecting structure connects the upper part of the precast beam 200 and cooperates with the lower connecting structure to fix the end of the precast beam 200 at the upper end of the vertical precast member 100. During assembly, the lower steel connector 2 supports and fixedly connects the lower horizontal connecting plate 22 through the lower connecting structure. In this way, the end of the precast beam 200 is supported by the lower steel connector 2, with reliable force bearing, no need to add supports, fast and efficient construction, and short installation construction period.

[0066] Such as Figure 1 , Figure 3 and Figure 4As shown, there are at least two vertical precast members 100 arranged vertically one above the other. The top ends of the vertical stress-bearing steel bars 1 in the vertical precast members 100 pass through the lower steel connectors 2 and are respectively connected with steel bar sleeves 4. The vertical stress-bearing steel bars 1 and the steel bar sleeves 4 can be connected by threads. During processing, connection threads are turned at the top ends of the vertical stress-bearing steel bars 1, and the steel bar sleeves 4 are connected at the threaded parts, which is convenient for adjusting the height of the steel bar sleeves 4. The bottom ends of the vertical stress-bearing steel bars 1 in the vertical precast members 100 extend out of the bottom of the vertical precast members 100 and correspond one by one to the steel bar sleeves 4 on the vertical precast members 100 located below. The extended ends of the stress-bearing steel bars at the bottom of the upper vertical precast member 100 are inserted into the corresponding steel bar sleeves 4. Preferably, the upper top surface of the steel bar sleeve 4 is flush with the top surface of the lower vertical precast member 100, which is convenient for assembly. The steel bar sleeve 4 and the extended end of the bottom of the vertical stress-bearing steel bar 1 of the upper vertical precast member 100 are fixedly connected by structural grout. When installing the two vertical precast members 100, first use compressed air to clean the holes of the steel bar sleeves 4, then fill the steel bar sleeves 4 with high-strength structural grout, and then spread bonding mortar 5 on the top surface of the lower vertical precast member 100 so that the upper vertical precast member 100 can be fully seated with mortar when it is seated. After that, insert the bottom ends of the extended vertical stress-bearing steel bars 1 of the upper vertical precast member 100 into the corresponding steel bar sleeves 4, adjust the verticality of the upper vertical precast member 100, and add lateral supports for temporary fixation to complete the vertical installation of the two vertical precast members 100. After the structural grout and the bonding mortar 5 solidify to the specified strength, the lateral supports can be removed. Since only the upper end of the steel bar sleeve 4 is open, the structural grout can be injected in advance before connection is achieved. And the openings of the steel bar sleeves 4 are all located at the top end of the lower vertical precast member 100, which not only significantly simplifies the grouting work, makes it easy to completely fill the structural grout, and is beneficial to ensuring the connection quality; at the same time, it is very easy to observe whether the vertical stress-bearing steel bars 1 in the upper vertical precast member 100 are aligned with the steel bar sleeves 4, and then it is convenient to make adjustments. The on-site installation is simple and convenient, the construction is fast, the quick insertion of the vertical stress-bearing steel bars 1 in the upper vertical precast member 100 into the corresponding steel bar sleeves 4 is realized, the construction is simple and convenient, the workload is small, and it is beneficial to shortening the construction period.

[0067] As Figure 1 , Figure 2 , Figure 5 and Figure 6As shown in the figure, the lower connection structure includes a lower outer extension connecting plate 6 welded to the outer end of the lower steel connecting member 2. A stiffening support structure is provided at the bottom of the lower steel connecting member 2 and the lower outer extension connecting plate 6. The lower horizontal connecting plate 22 is supported on the upper side of the lower outer extension connecting plate 6 and is fixedly connected through a lower bolt connection structure. The lower bolt connection structure can be such that corresponding connection holes 7 are respectively provided on the lower horizontal connecting plate 22 and the lower outer extension connecting plate 6. A nut 9 embedded in the precast beam 200 is fixedly provided at the position of the connection hole 7 on the lower horizontal connecting plate 22. The lower horizontal connecting plate 22 is supported on the upper side of the lower outer extension connecting plate 6 and is fixedly connected to the nut 9 through a bolt 8 passing through the connection hole 7. The nut 9 can be welded and fixed to the lower horizontal connecting plate 22, and the nut 9 can be lengthened. The upper end of the nut 9 is closed to ensure smooth connection and cooperation with the bolt 8. The lower outer extension connecting plate 6 and the stiffening support structure are combined and strengthened to form a steel bracket structure. The lower horizontal connecting plate 22 is assembled and placed on the outer extension connecting plate, and the precast beam 200 is supported by the outer extension connecting plate. No additional support needs to be provided below the precast beam 200 for assembly construction. Then, through adjustment, the connection holes 7 respectively provided on the lower horizontal connecting plate 22 and the lower outer extension connecting plate 6 are aligned, and then the bolt 8 is passed through the connection hole 7 and screwed into the nut 9 and tightened, so that the precast beam 200 is quickly installed and fixed and the shear resistance is ensured. For the convenience of construction, the connection hole 7 on the lower outer extension connecting plate 6 can be a slotted hole, which is convenient for aligning the connection hole 7 and inserting the bolt 8. In this way, the erection of temporary supports is omitted during the assembly of the precast beam 200. The overall construction is simple and convenient, with low cost and small on-site workload, which is conducive to reducing the construction period. The end and side of the lower horizontal connecting plate 22 can be welded to the lower outer extension connecting plate 6 to achieve equal-strength connection and reliable force transmission of the lower steel bars 21 of the precast beam 200 at the node.

[0068] As Figure 1 , Figure 2 and Figure 3 shown, the stiffening support structure includes a vertical stiffening plate 10 embedded in the vertical precast member 100 with its end protruding from the vertical precast member 100. The vertical stiffening plate 10 is welded to the lower steel connecting member 2 and the lower outer extension connecting plate 6. The vertical stiffening plate 10 penetrates through the vertical precast member 100, and the support is firm and reliable.

[0069] As Figure 22As shown in the figure, the stiffening support structure includes a vertically precast member 100 with a pre-embedded stiffening plate 11 on the side, which is welded to the lower steel connecting member 2. An anchor bar 12 is pre-embedded in the vertically precast member 100 and welded to the pre-embedded stiffening plate 11. A vertical stiffening plate 10 is welded to the pre-embedded stiffening plate 11 and the lower outward extending connecting plate 6. The vertical stiffening plate 10 of the stiffening support structure does not extend into the vertically precast member 100. The lower steel connecting member 2, the pre-embedded stiffening plate 11, the anchor bar 12, the vertical stiffening plate 10, and the lower outward extending connecting plate 6 are welded into a whole. The vertical stiffening plate 10 does not need to penetrate the vertically precast member 100, which facilitates the welding connection between the lower outward extending connecting plate 6 and the vertical stiffening plate 10 with the lower steel connecting member 2 and the pre-embedded stiffening plate 11 after the vertically precast member 100 is precast, and the steel consumption is lower.

[0070] As Figure 1 , Figure 3 and Figure 6 shown in the figure, the upper connection structure includes an upper steel connecting member 13 provided at the upper side of the lower steel connecting member 2 corresponding to the upper part of the steel bars 23 in the precast beam 200. The reinforcing bar sleeve 4 passes through the upper steel connecting member 13 and is welded to the upper steel connecting member 13. The upper part of the steel bars 23 in the precast beam 200 is fixedly connected with an upper transverse connecting plate 24 extending out of the end of the precast beam 200. The upper transverse connecting plate 24 is fixedly connected with the upper steel connecting member 13.

[0071] As Figure 1 and Figure 6 shown in the figure, the upper transverse connecting plate 24 is fixedly connected with the upper steel connecting member 13 by welding. The upper transverse connecting plate 24 and the upper part of the steel bars 23 in the precast beam 200 can be welded and fixed. The upper transverse connecting plate 24 and the upper steel connecting member 13 are fixedly connected into a whole by welding, ensuring equal-strength connection.

[0072] As Figure 14 shown in the figure, a vertical stiffening rib 25 can be pre-embedded in the precast beam 200 and welded to the bottom of the upper transverse connecting plate 24. After the vertical stiffening rib 25 extends out of the end of the precast beam 200, it is welded to the bottom of the upper steel connecting member 13 to enhance the reliability of the connection force of the precast beam 200. A reinforcing bar sleeve 4 reserved hole and a concrete pouring hole 14 can be reserved on the upper steel connecting member 13. The reserved hole facilitates the passing through and welding of the reinforcing bar sleeve 4, and the pouring hole facilitates the post-cast concrete 219 at the connection node after the assembly of each precast member.

[0073] As Figure 24 shown in the figure, an upper outward extending connecting plate 15 is welded to the outer end of the upper steel connecting member 13. The upper transverse connecting plate 24 is supported on the upper side of the upper outward extending connecting plate 15 and fixedly connected by an upper bolt connection structure 223. This connection scheme realizes the full bolt connection of the precast beam 200 up and down at the assembly node, and the installation is simple, reliable and low-cost.

[0074] As Figure 25 and Figure 26As shown, the outer end of the upper steel connector 13 extends out of the side of the vertical precast member and is fixedly provided with a connecting flange plate 221. The outer end of the upper horizontal connecting plate 24 is provided with a beam flange plate 220 corresponding to the connecting flange plate 221. The corresponding beam flange plate 220 and connecting flange plate 221 are fixedly connected by an upper bolt connection structure 223.

[0075] As Figure 27 and Figure 28 As shown, the outer end of the upper steel connector 13 extends out of the side of the vertical precast member and is fixedly provided with a connecting flange plate 221. At least two vertical connecting plates 28 extending out of the end of the precast beam are respectively fixedly connected to the upper part of the steel bars in each precast beam. The outer end of each vertical connecting plate 28 is fixedly connected to a beam flange plate 220 corresponding to the connecting flange plate 221. The corresponding beam flange plate 220 and connecting flange plate 221 are fixedly connected by an upper bolt connection structure 223.

[0076] As Figure 29 and Figure 30 As shown, the outer end of the upper steel connector 13 extends out of the side of the vertical precast member and is fixedly provided with a connecting flange plate 221. One vertical connecting plate 28 extending out of the end of the precast beam is respectively fixedly connected to the upper part of the steel bars in each precast beam. Transverse plates 217 welded to the vertical connecting plate 28 are respectively embedded on both sides of the vertical connecting plate 28 in the precast beam; the outer end of each vertical connecting plate 28 is fixedly connected to a beam flange plate 220 corresponding to the connecting flange plate 221. The corresponding beam flange plate 220 and connecting flange plate 221 are fixedly connected by an upper bolt connection structure 223.

[0077] As Figure 23 As shown, during assembly, there is a situation where the precast beam 200 is connected to the vertical precast member such as the precast concrete column on one side. When the precast beam 200 is connected to the precast concrete side column, at this time, the lower steel connector 2 and the upper steel connector 13 are respectively connected to the lower connection structure and the upper connection structure at the same side end of the vertical precast member 100. For example, the lower steel connector 2 located on the same side of the vertical precast member 100 is welded to the lower outer extension connecting plate 6 and fixedly connected to the lower horizontal connecting plate 22 of the precast beam 200 through the cooperation of the bolt 8 and the nut 9, and the upper steel connector 13 is directly welded and fixedly connected to the upper horizontal connecting plate 24 of the precast beam 200, or the outer end of the upper steel connector 13 is welded to the upper outer extension connecting plate 15, and the upper horizontal connecting plate 24 is placed on the upper side of the upper outer extension connecting plate 15 and fixedly connected by the upper bolt connection structure 223. Transverse anchor plates 16 are respectively welded to the other ends of the lower steel connector 2 and the upper steel connector 13. Studs 3 can be respectively welded to the surfaces of the lower steel connector 2 and the upper steel connector 13 to ensure the force anchoring of the lower steel connector 2 and the upper steel connector 13 in the vertical precast member 100 after assembly.

[0078] As Figure 12 and Figure 13As shown, when only the lower half of the precast beam such as the precast concrete beam 200 is precast and the part in contact with the floor slab is cast-in-place by lapping on-site, the upper reinforcement bars 23 in the precast beam 200 are tied on-site. At this time, the upper connection structure can adopt that the upper reinforcement bars 23 between two precast beams 200 located on the opposite sides of the vertical precast member 100 pass through the upper part of the vertical precast member 100, and each upper reinforcement bar 23 is arranged alternately with the reinforcing bar sleeve 4, that is, each upper reinforcement bar 23 in the precast beam 200 is bent around the reinforcing bar sleeve 4, and a plurality of closed reinforcing stirrups 26 for restricting the bending of the upper reinforcement bar 23 are arranged at the bending part of the upper reinforcement bar 23 in the precast beam 200, and preferably not less than 3, to connect and reinforce the reinforcement bars in the precast beam 200 and ensure the force-bearing of the upper reinforcement bars 23 in the precast beam 200; this scheme has simple connection, reliable force-bearing and low cost.

[0079] As Figure 7 shown, the upper connection structure includes that horizontal connecting plates 27 extending out of the ends of the precast beams 200 are fixedly connected to the upper reinforcement bars 23 in each precast beam 200. The upper reinforcement bars 23 are welded to the horizontal connecting plates 27, and each horizontal connecting plate 27 extends into the top of the vertical precast member 100 and is butt-welded. The horizontal connecting plate 27 can be provided with a concrete pouring hole 14 to facilitate the pouring of concrete in the joint. That is, the horizontal connecting plates 27 of each precast beam 200 are extended and lengthened to extend into the column of the vertical precast member 100, the upper steel connector 13 is cancelled, and the horizontal connecting plates 27 in all directions are butted in the column of the vertical precast member 100 and welded with butt welds to achieve equal-strength connection. This assembly connection method is to first install the precast beam 200, butt and weld each horizontal connecting plate 27, then install the reinforcing bar sleeve 4, and weld the reinforcing bar sleeve 4 to the horizontal connecting plate 27. This structure cancels the upper steel connector 13, simplifies the structure of the vertical precast member 100, reduces the number of welds, and improves the connection reliability. And as Figure 8 and Figure 9 shown, vertical stiffeners 25 welded to the bottom of the upper transverse connecting plate 24 can also be embedded in the precast beam 200. After the vertical stiffeners 25 extend out of the ends of the precast beam 200, they are welded to the bottom of the horizontal connecting plate 27 to enhance the reliability of the connection force-bearing of the precast beam 200.

[0080] As Figure 10 and Figure 11As shown in the figure, the upper connection structure includes horizontal connecting plates 27 which are respectively fixedly connected to the upper steel bars in each precast beam, extend out of the end of the precast beam and extend into the top of the vertical precast member. Corresponding beam flange plates 220 are respectively fixedly provided at the outer edges of adjacent horizontal connecting plates 27, and the corresponding beam flange plates 220 on adjacent horizontal connecting plates 27 are fixedly connected by an upper bolt connection structure 223. In this upper connection structure solution, the horizontal connecting plates 27 of each precast beam 200 are extended and lengthened, extending into the column of the vertical precast member 100, and the upper steel connectors 13 are cancelled. The horizontal connecting plates 27 in all directions are butted inside the column of the vertical precast member 100, and the corresponding beam flange plates 220 on adjacent horizontal connecting plates 27 are fixedly connected by the upper bolt connection structure 223, realizing full-bolt connection of the precast beam 200 up and down at the assembly joint, with simple and reliable installation and low cost.

[0081] As Figure 31 and Figure 32 As shown in the figure, the upper connection structure includes horizontal connecting plates 27 which are respectively fixedly connected to the upper steel bars in each precast beam, extend out of the end of the precast beam and extend into the top of the vertical precast member. An intermediate connecting plate 222 is arranged inside the top of the vertical precast member. Connecting flange plates 221 are fixedly provided on the periphery of the intermediate connecting plate 222. The outer ends of each horizontal connecting plate 27 are fixedly connected with beam flange plates 220 corresponding to the connecting flange plates 221, and the corresponding beam flange plates 220 and connecting flange plates 221 are fixedly connected by an upper bolt connection structure 223. The intermediate connecting plate 222 and the connecting flange plate 221, and the horizontal connecting plate and the beam flange plate 220 can be welded and connected; in this upper connection structure solution, the upper steel connectors 13 are also cancelled, and the beam flange plates 220 on the horizontal connecting plates 27 and the connecting flange plates 221 on the intermediate connecting plates 222 are fixedly connected by the upper bolt connection structure 223, realizing full-bolt connection of the precast beam 200 up and down at the assembly joint, with simple and reliable installation and low cost.

[0082] As Figures 15 - 18As shown in the figure, according to the construction requirements, the upper connection structure can actually also adopt a structure in which the upper steel bars 23 in each precast beam 200 are respectively fixedly connected with at least two vertical connecting plates 28 extending out of the end of the precast beam 200. According to the structural dimensions of the precast beam 200 and the space at the joint, two vertical connecting plates 28 extending out of the end of the precast beam 200 are preferably selected. The vertical connecting plate 28 and the upper steel bars 23 in the precast beam 200 can be welded. Each vertical connecting plate 28 extends into the top of the vertical precast member 100 for butt welding or welding with the intermediate connector 29. This structure also cancels the upper steel connector 13, simplifies the structure of the vertical precast member 100, and the two vertically arranged vertical connecting plates 28 on each precast beam 200 greatly enhance the connection firmness of the precast beam 200, making the assembly connection of the precast beam 200 more reliable. And the use of the vertical connecting plate 28 makes the weld vertical during welding, which is convenient for welding operation and improves the convenience of on-site welding. Each vertical connecting plate 28 is butt-welded into a whole, and the structure is simple. By welding the vertical connecting plate 28 with the intermediate connector 29, the trouble of butt joint of the vertical connecting plate 28 can be reduced, which is convenient for welding operation. The intermediate connector 29 can be in the shape of a vertical cylinder, a vertical square column, a vertical cross-shaped plate, etc. made of steel according to the actual assembly construction requirements, and the vertical connecting plates 28 are welded to the side surfaces of the vertical cylinder, the vertical square column or the vertical cross-shaped plate to form a whole to achieve equal-strength connection.

[0083] As Figures 19 - 21 shown in the figure, according to the construction requirements, the upper connection structure can actually also adopt a structure in which the upper steel bars 23 in each precast beam 200 are respectively fixedly connected with a vertical connecting plate 28 extending out of the end of the precast beam 200. The vertical connecting plate 28 and the upper steel bars 23 in the precast beam 200 can be welded. Transverse plates 217 welded to the vertical connecting plate 28 are respectively embedded on both sides of the vertical connecting plate 28 in the precast beam 200. Each vertical connecting plate 28 extends into the top of the vertical precast member 100 for butt welding or welding with the intermediate connector 29. This structure also cancels the upper steel connector 13, simplifies the structure of the vertical precast member 100; and each precast beam 200 uses a vertical connecting plate 28 to be butt-welded into a whole, and the structure is simple, which is convenient for the on-site welding operation at the joint; by welding the vertical connecting plate 28 with the intermediate connector 29, the trouble of butt joint of the vertical connecting plate 28 can be reduced, which is convenient for welding operation. The intermediate connector 29 can be in the shape of a vertical cylinder or a vertical square column made of steel according to the actual assembly construction requirements, and the vertical connecting plates 28 are welded to the side surfaces of the vertical cylinder or the vertical square column to form a whole to achieve equal-strength connection. The two transverse plates 217 and the vertical connecting plate 28 are welded into a cross shape, and the transverse plates 217 can also be welded to the upper steel bars 23 in the precast beam 200. In this way, the two transverse plates 217, the vertical connecting plate 28 and the upper steel bars 23 in the precast beam 200 are welded into one body, improving the reliability and connection strength of the vertical connecting plate 28.

[0084] As Figure 1 , Figure 5 and Figure 24 shown, the precast beam 200 is mostly precast with multi-layer transverse steel bars arranged vertically and horizontally, stirrups 17 connecting and restraining multiple layers of steel bars, and concrete. Among them, the steel bars located in the vertical middle of the precast beam 200 serve as waist bars 216. During assembly, connecting sleeves 210 are fixedly connected to the end parts of the waist bars 216 in two relatively arranged precast beams 200 respectively, and an anchor bar 211 is threadedly connected between the corresponding two connecting sleeves 210. The waist bar 216 is threadedly connected to the connecting sleeve 210, and the inner end of the connecting sleeve 210 is embedded in the precast beam 200. The connecting sleeve 210 is provided with internal threads, and the anchor bar 211 is screwed into the corresponding connecting sleeves 210 during assembly, which is convenient and fast in connection, ensures the anchoring of the waist bar 216, enhances the tensile strength between the two precast beams 200 and the assembly reliability. And a casting key groove 212 can be provided at the end of the precast beam 200 to ensure that the post-cast high-strength concrete at the joint is cast integrally with the precast beam 200.

[0085] As Figure 33 and Figure 34 shown, when the precast main beam 213 and the precast secondary beam 214 are assembled and connected, etc., at this time, the precast main beam 213 can be regarded as the vertical precast member 100, and the lower steel connecting member 2 and the upper steel connecting member 13 are embedded in the upper part of the precast main beam 213. The end structure of the precast secondary beam 214 is the same as that of the precast beam 200, that is, the upper steel bars 23 of the precast secondary beam 214 are welded to the upper transverse connecting plate 24, the lower steel bars 21 of the precast secondary beam 214 are welded to the lower transverse connecting plate 22, the upper transverse connecting plate 24 is welded to the upper steel connecting member 13, the lower steel connecting member 2 is welded to the lower extended connecting plate 6 and fixedly connected to the lower transverse connecting plate 22 by a lower bolt connection structure. Similarly, the end and side of the lower transverse connecting plate 22 can be welded to the lower extended connecting plate 6 to achieve the equal-strength connection of the lower steel bars 21 of the precast beam 200 in the joint and the reliable force transmission. And a stiffening support structure is provided at the lower steel connecting member 2 and the lower extended connecting plate 6 for support and reinforcement. All the concrete inside the stirrups 17 of the main beam is precast. A casting gap 218 is reserved between the precast secondary beam 214 and the precast main beam 213, and secondary grouting is carried out with high-strength grouting material or high-strength fine aggregate concrete to ensure that the main and secondary beams are assembled and laminated into a whole. Similarly, as Figure 35 shown, when the precast main beam 213 and the post-cast composite layer beam 215 are assembled and connected, the cast-in-place composite layer steel bars of the post-cast composite layer beam 215 are tied on site. Similarly, a casting gap 218 is reserved between the post-cast composite layer beam 215 and the precast main beam 213, and secondary grouting is carried out with high-strength grouting material or high-strength fine aggregate concrete to ensure that the main and secondary beams are assembled and laminated into a whole.

[0086] As Figure 6 andFigure 36 As shown in the figure, when the precast beam 200 and the precast concrete column are assembled in the present utility model, the precast beam 200 can be located in the middle of the side of the precast concrete column, or the precast beam 200 can be aligned with the edge of the side of the precast concrete column. In this way, the shape and size of some components in the assembly node may change, but this does not affect the structure and assembly connection of each part within the precast component assembly node.

[0087] As Figure 1 , Figure 12 , Figure 23 and Figure 24 shown, the upper steel bars, lower steel bars and waist steel bars in the middle of the precast beam achieve equal-strength connection at the node. After the precast beam is installed, high-strength concrete is poured at the connection part between the vertical precast column and the precast beam to achieve the concrete combination of the column and the beam.

[0088] The vertical precast member 100 in the present utility model can be a precast concrete column, and can also be a precast concrete shear wall, etc. The settings of the steel bar sleeves 4 for the up-and-down connections such as column-to-column and wall-to-wall and the cooperation with the stress steel bars at the assembly node are the same for both, and the vertical assembly connection structures of both are the same. Similarly, when the precast concrete shear wall is used to connect with the precast beam 200, the settings of the lower steel connector 2, the lower extended connection plate 6, the vertical stiffening plate 10 and the upper steel connector 13, etc. of the precast concrete shear wall are also the same as the structure in the present utility model; Therefore, the assembly node of the present utility model realizes the fast and reliable connection of vertical members such as column-to-column or shear wall-to-shear wall at the node, and can also realize the fast and reliable connection without support between the column or shear wall and the beam, and between the secondary beam and the main beam, etc.

[0089] In the present utility model, the upper connection structure adopts a variety of solutions, such as welding the upper horizontal connecting plate 24 to the upper steel connecting piece 13, or fixing and connecting the upper outer-extending connecting plate 15, which is welded to the upper steel connecting piece 13, to the upper horizontal connecting plate 24 through the upper bolt connection structure 223, butt-welding the horizontal connecting plate 27, or fixing and connecting the beam flange plate 220 on the horizontal connecting plate 27 to the horizontal connecting plate 27 through the upper bolt connection structure 223, fixing and connecting the beam flange plate 220 to the connecting flange plate 221 through the upper bolt connection structure 223, welding between the vertical connecting plates 28, and welding between the vertical connecting plate 28 and the intermediate connecting piece 29. This greatly enriches the connection methods between the precast beam 200 and vertical precast components such as concrete columns, precast concrete shear walls, and beam-to-beam connections, providing a variety of excellent assembly options for the assembly of various concrete precast components and different assembly working environments. Among them, for the upper bolt connection structure 223 that fixes and connects the beam flange plate 220 to the connecting flange plate 221, one of the corresponding beam flange plate 220 and connecting flange plate 221 can be provided with bolt holes and the other with corresponding threaded holes, and the bolt passes through the bolt hole and the threaded hole for fixed connection. Preferably, bolt holes are provided on the beam flange plate 220 and threaded holes are provided on the connecting flange plate 221, so that the bolt is inserted from the outside to the inside during assembly, which is convenient for construction. Of course, it is also possible to adopt the method of providing corresponding bolt holes on both the beam flange plate 220 and the connecting flange plate 221, and the bolt passes through the corresponding bolt holes on the beam flange plate 220 and the connecting flange plate 221 and is threadedly connected to the nut. Similarly, the upper bolt connection structure 223 for connecting between the upper horizontal connecting plate 24 and the upper outer-extending connecting plate 15, the upper bolt connection structure 223 for connecting between the beam flange plates 220 on each horizontal connecting plate 27, etc. can also adopt the above structural methods. The settings of bolts, bolt holes, etc. are common knowledge to those skilled in the art and will not be described in detail here.

[0090] In the present utility model, the connections between the upper steel bars 23 and the horizontal connecting plate 27 or the vertical connecting plate, between the beam flange plate 220 and the vertical connecting plate 28 or the horizontal connecting plate 27, between the connecting flange plate 221 and the upper steel connecting piece 13, etc. are all fixed by welding, which is convenient and firm for connection. When the upper bolt connection structure 223 is provided with bolt holes, one of the corresponding bolt holes can be provided as a slotted hole to facilitate the bolt to quickly pass through the bolt hole.

[0091] Among them, for the upper connection structure fixed by the upper bolt connection structure 223 in the present utility model, its assembly solution realizes the full-bolt connection of the precast beam 200 up and down at the assembly node, with simple and reliable installation and low cost.

[0092] The assembly node connection of the present utility model is simple, with reliable force-bearing and low cost. In actual assembly and use, it can have the following characteristics:

[0093] a) The steel bar sleeves 4 for the assembly of columns with columns or shear walls with shear walls are placed in the joints at the upper ends of the lower columns or shear walls. The stress-bearing steel bars of the upper columns or shear walls are installed from top to bottom, with simple installation, high speed, 100% grouting fullness, and reliable stress-bearing.

[0094] b) The installation of the precast beam 200 is directly placed on the lower steel connectors 2 and the lower outward extension connecting plates 6 of the steel corbels extended from the lower columns or shear walls, and no supports need to be added under the precast beam 200.

[0095] c) The lower end of the precast beam 200 clamps the lower outward extension connecting plate 6 and the lower transverse connecting plate 22 through bolts 8 and nuts 9, and the welds at the ends and sides of the lower outward extension connecting plate 6 are used to achieve the equal-strength connection of the lower steel bars 21 of the precast beam 200 in the joint and reliable stress transfer.

[0096] d) The upper transverse connecting plate 24 extending from the upper part of the precast beam 200 is welded to the upper steel connector 13 in the joint to achieve equal-strength connection and reliable stress transfer, with simple connection, convenient and reliable.

[0097] e) The waist steel bars 216 in the middle of the precast beam 200 are connected by mechanical connection sleeves 210 and the anchor bars 211 are anchored into the column or shear wall connection joint. The casting key grooves 212 are provided at the ends of the precast beam 200 to ensure that the post-cast high-strength concrete in the joint and the precast beam 200 are cast into an integral whole.

[0098] In the description of the present invention, it should be understood that the terms indicating the orientation or position relationship in the present invention are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. At the same time, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A new type of assembly joint for precast concrete components, used for connecting vertical precast components and precast beams, characterized in that: It includes a lower steel connector fixedly arranged at the corresponding position of the top of the vertical precast member and the lower part of the steel bars inside the precast beam. The lower steel bars inside the precast beam are fixedly connected with a lower transverse connecting plate corresponding to the lower steel connector and extending out of the end of the precast beam. The lower steel connector is provided with a lower connecting structure for supporting and fixedly connecting the lower transverse connecting plate, and the upper steel bars inside the precast beam are fixedly connected with an upper connecting structure.

2. The novel precast concrete component assembly joint according to claim 1, characterized in that: There are at least two vertical precast members arranged vertically and horizontally. The top ends of the vertical stress-bearing steel bars inside the vertical precast members pass through the lower steel connectors and are respectively connected with steel bar sleeves. The bottom ends of the vertical stress-bearing steel bars inside the vertical precast members extend out of the bottom of the vertical precast members and correspond to the steel bar sleeves on the upper steel bars of the lower vertical precast member one by one, and the extended ends of the stress-bearing steel bars at the bottom of the upper vertical precast member are inserted into the corresponding steel bar sleeves.

3. The novel precast concrete member assembly joint according to claim 1, wherein: The lower connecting structure includes a lower outward extending connecting plate welded to the outer end of the lower steel connector. A stiffening support structure is provided at the bottom of the lower steel connector and the lower outward extending connecting plate. The lower transverse connecting plate is supported on the upper side of the lower outward extending connecting plate and fixedly connected through a lower bolt connecting structure.

4. The novel precast concrete component assembly joint according to claim 3, characterized in that: The lower bolt connecting structure includes corresponding connecting holes respectively arranged on the lower transverse connecting plate and the lower outward extending connecting plate. A nut embedded in the precast beam is fixedly arranged at the connecting hole on the lower transverse connecting plate. The lower transverse connecting plate is supported on the upper side of the lower outward extending connecting plate and fixedly connected with the nut through a bolt passing through the connecting hole.

5. The novel precast concrete component assembly joint according to claim 3, characterized in that: The stiffening support structure includes a vertical stiffening plate embedded in the vertical precast member with its end extending out of the vertical precast member. The vertical stiffening plate is welded to the lower steel connector and the lower outward extending connecting plate.

6. The novel assembly joint of precast concrete components according to claim 3, characterized in that: The stiffening support structure includes a pre-embedded stiffening plate embedded on the side of the vertical precast member and welded to the lower steel connector. An anchor bar welded to the pre-embedded stiffening plate is embedded in the vertical precast member. A vertical stiffening plate is welded between the pre-embedded stiffening plate and the lower outward extending connecting plate.

7. The novel precast concrete member assembly joint according to claim 2, characterized in that: The upper connecting structure includes an upper steel connector arranged at the corresponding position of the upper steel bars inside the precast beam on the upper side of the lower steel connector. The steel bar sleeve passes through the upper steel connector and is welded to the upper steel connector. The upper steel bars inside the precast beam are fixedly connected with an upper transverse connecting plate extending out of the end of the precast beam. The upper transverse connecting plate is fixedly connected with the upper steel connector.

8. The novel precast concrete component assembly joint according to claim 7, characterized in that: The upper transverse connecting plate and the outer end of the upper steel connector are fixedly connected by welding.

9. The novel assembly joint of precast concrete components according to claim 7, characterized in that: The outer end of the upper steel connector is welded with an upper outward extending connecting plate. The upper transverse connecting plate is supported on the upper side of the upper outward extending connecting plate and fixedly connected through an upper bolt connecting structure.

10. The novel precast concrete component assembly joint according to claim 7, wherein: The outer end of the upper steel connector extends out of the side of the vertical precast member and is fixedly provided with a connecting flange plate. The outer end of the upper transverse connecting plate is provided with a beam flange plate corresponding to the connecting flange plate. The mutually corresponding beam flange plate and connecting flange plate are fixedly connected through an upper bolt connecting structure.

11. The novel precast concrete component assembly joint according to claim 7, characterized in that: The outer end of the upper steel connector extends out of the side of the vertical precast member and is fixedly provided with a connecting flange plate. Each of the upper steel bars inside the precast beam is fixedly connected with at least two vertical connecting plates extending out of the end of the precast beam. The outer ends of each of the vertical connecting plates are fixedly connected with a beam flange plate corresponding to the connecting flange plate. The mutually corresponding beam flange plate and connecting flange plate are fixedly connected through an upper bolt connecting structure.

12. The novel precast concrete component assembly joint according to claim 7, characterized in that: The outer end of the upper steel connector extends out of the side of the vertical precast member and is fixedly provided with a connecting flange plate. The upper reinforcing bars in each precast beam are respectively fixedly connected with a vertical connecting plate extending out of the end of the precast beam. Transverse plates welded to the vertical connecting plate are respectively embedded on both sides of the vertical connecting plate in the precast beam; the outer ends of the vertical connecting plates are fixedly connected with beam flange plates corresponding to the connecting flange plates, and the corresponding beam flange plates and connecting flange plates are fixedly connected through an upper bolt connection structure.

13. The novel assembly joint of precast concrete components according to claim 7, characterized in that: One end of the lower steel connector and the upper steel connector on the same side of the vertical precast member are respectively connected with a lower connection structure and an upper connection structure, and transverse anchor plates are respectively welded to the other ends of the lower steel connector and the upper steel connector.

14. The novel precast concrete member assembly joint according to claim 2, wherein: The upper connection structure includes that the upper reinforcing bars of two precast beams arranged oppositely on the opposite sides of the vertical precast member pass through the upper part of the vertical precast member, and the upper reinforcing bars and the steel bar sleeves are arranged in a staggered manner; multiple closed reinforcing stirrups for restricting the bending of the upper reinforcing bars are arranged at the bending parts of the upper reinforcing bars in the precast beams.

15. The novel precast concrete component assembly joint according to claim 1, characterized in that: The upper connection structure includes that the upper reinforcing bars in each precast beam are respectively fixedly connected with a horizontal connecting plate extending out of the end of the precast beam, and each horizontal connecting plate extends into the top of the vertical precast member and is butt-welded.

16. The novel precast concrete member assembly joint according to claim 1, characterized in that: The upper connection structure includes that the upper reinforcing bars in each precast beam are respectively fixedly connected with a horizontal connecting plate extending out of the end of the precast beam and extending into the top of the vertical precast member. Corresponding beam flange plates are respectively fixedly provided at the edge parts of the outer ends of the adjacent horizontal connecting plates, and the corresponding beam flange plates on the adjacent horizontal connecting plates are fixedly connected through an upper bolt connection structure.

17. The novel precast concrete component assembly joint according to claim 1, wherein: The upper connection structure includes that the upper reinforcing bars in each precast beam are respectively fixedly connected with a horizontal connecting plate extending out of the end of the precast beam and extending into the top of the vertical precast member. An intermediate connecting plate is arranged in the top of the vertical precast member, a connecting flange plate is fixedly provided on the periphery of the intermediate connecting plate, the outer ends of the horizontal connecting plates are fixedly connected with beam flange plates corresponding to the connecting flange plates, and the corresponding beam flange plates and connecting flange plates are fixedly connected through an upper bolt connection structure.

18. The novel precast concrete component assembly joint according to claim 1, characterized in that: The upper connection structure includes that the upper reinforcing bars in each precast beam are respectively fixedly connected with at least two vertical connecting plates extending out of the end of the precast beam, and each vertical connecting plate extends into the top of the vertical precast member for butt-welding or welding with an intermediate connector.

19. The novel precast concrete component assembly joint according to claim 1, wherein: The upper connection structure includes that the upper reinforcing bars in each precast beam are respectively fixedly connected with a vertical connecting plate extending out of the end of the precast beam. Transverse plates welded to the vertical connecting plate are respectively embedded on both sides of the vertical connecting plate in the precast beam, and each vertical connecting plate extends into the top of the vertical precast member for butt-welding or welding with an intermediate connector.

20. The novel precast concrete component assembly joint according to any one of claims 1-19, characterized in that: Connecting sleeves are respectively fixedly connected to the end parts of the waist reinforcing bars in two relatively arranged precast beams, and an anchor bar is threadedly connected between the corresponding two connecting sleeves. A casting key groove is arranged at the end of the precast beam.

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