Rotary friction energy dissipation prefabricated coupling beam connecting structure and construction method

Abstract

The invention relates to the technical field of precast beam splicing, and provides a rotary friction energy dissipation precast coupling beam connecting structure and a construction method, and the connecting structure comprises an insertion mechanism, a receiving mechanism and a detection mechanism; the insertion mechanism comprises an extension plate, and two first friction plates which are spaced in parallel are arranged on the extension plate; butt joint rods are convexly arranged at the ends, away from the extension plates, of the first friction plates; a containing groove is formed in one end of the main beam, and the receiving mechanism comprises three second friction plates which are arranged at the bottom of the containing groove in a protruding mode and are arranged in parallel at intervals; the detection mechanism comprises two sliding rails, the two sliding rails are arranged at the bottoms of the intervals of the three second friction plates respectively, and fixed insertion openings allowing the butt joint rods to be inserted therein are formed in the sliding rails; a second extrusion column is slidably arranged in the sliding rail, and a detection observation hole is formed in the position, corresponding to the second extrusion column, of the main beam. And in the splicing process, the butt joint completion degree is detected, the situation that hidden danger exists in butt joint and influences use of the connecting beam is avoided, and personnel injuries and financial losses caused by collapse are avoided.

Description

Technical Field

[0001] This application belongs to the technical field of precast beam splicing. More specifically, it relates to a rotational friction energy dissipation precast continuous beam connection structure. Background Art

[0002] With the continuous development of the construction industry, precast and assembled construction, with its advantages such as rapid installation and stable performance, will surely become the major trend of future building industrialization. As a key process, the research on precast beams is of great significance. Precast beams are precast in factories and then transported to the construction site for installation and fixation at the designed positions. This production method enables the standardized and refined production of beam bodies in the factory environment, thereby improving production efficiency and quality stability.

[0003] When traditional precast beams are connected, the two precast beams need to be spliced and connected to form a complete beam structure. In the existing precast columns, a short platform for placing is provided at the connection. The precast beam is directly placed on the short platform, and the beam steel bars do not extend out of the beam ends. Generally, pin bolt holes are left at the beam ends, and bolts or steel bars extend out on the placing end platform and are inserted into the pin bolt holes to play a role in limiting and fixing. During the splicing process, due to human reasons, there are certain errors, and there are no inspection measures during the docking process, so the docking completion degree cannot be detected, thus the docking completion degree of the precast continuous beam cannot be guaranteed. Once the connection of the precast continuous beam is not stable during docking, during the later use process, the precast beam may collapse due to the unstable connection, resulting in certain personal injuries and financial losses. Summary of the Invention

[0004] Aiming at the technical problem of the lack of inspection measures in the above-mentioned existing technology, the purpose of the embodiment of this application is to provide a rotational friction energy dissipation precast continuous beam connection structure. When the docking rod is inserted, it squeezes the second extrusion columns on both sides, driving the second extrusion columns on both sides to move towards both sides inside the sliding holes. After splicing, the docking rod squeezes the second extrusion columns into the inspection observation holes on the main beam, detecting the docking completion degree of the precast beam during the splicing process, avoiding potential hidden dangers in the docking that affect the use of the connecting beam, thereby ensuring the stability of the connecting beam and avoiding collapses that cause personal injuries and financial losses.

[0005] To achieve the above purpose, the technical solution adopted in this application is: to provide a rotational friction energy dissipation precast continuous beam connection structure for connecting a main beam and a secondary beam, including: an insertion mechanism, a receiving mechanism, and a detection mechanism;

[0006] The insertion mechanism includes: an extension plate protruding from one end of the secondary beam,

[0007] Two parallel and spaced first friction plates are provided on the extension plate; a docking rod protrudes from one end of the first friction plate away from the extension plate;

[0008] One end of the main beam is provided with a receiving groove. The receiving mechanism includes: three parallel and spaced second friction plates protruding from the bottom of the receiving groove, and the two first friction plates are alternately inserted with the three second friction plates;

[0009] The detection mechanism includes two sliding tracks, which are respectively arranged at the spaced bottoms of the three second friction plates. The sliding tracks are provided with fixed insertion ports for inserting the docking rods; a second extrusion column is slidably arranged in the sliding tracks, and the length direction of the second extrusion column is perpendicular to the axis of the fixed insertion port. The main beam is provided with a detection observation hole corresponding to the position of the second extrusion column;

[0010] When the insertion mechanism is inserted into the receiving mechanism in place, the docking rod is inserted into the fixed insertion port and pushes the second extrusion column to the detection observation hole.

[0011] In one embodiment, a group of first connecting rods and second connecting rods arranged parallel up and down are provided on the extension plate;

[0012] Extrusion sleeves are provided on the two first connecting rods; a plurality of vertical buffer sleeves are provided at equal arc distances on the surface of the extrusion sleeve parallel to the first friction plate;

[0013] The first friction plate is located between the first connecting rod and the second connecting rod;

[0014] A horizontal buffer sleeve is provided on the side surface of the first friction plate.

[0015] In one embodiment, a vertical buffer spring is provided in the vertical buffer sleeve, and a horizontal buffer spring is provided in the horizontal buffer sleeve.

[0016] In one embodiment, push plates are provided at the ends of the first connecting rod and the second connecting rod away from the extension plate. Push columns are provided on the push plates. Corresponding positions on the sliding tracks are provided with push holes. A first extrusion column and an extrusion spring are provided in the push holes; when the push column is inserted into the push hole, the extrusion spring is pushed.

[0017] In one embodiment, through holes with the same axis are provided on the main beam, on the extrusion sleeve, on the first friction plate and on the second friction plate. An expansion screw is inserted into one end of the through hole, and a fixing rod is inserted into the other end. After the fixing rod is inserted into the expansion screw, a fixing sleeve is installed at one end of the fixing rod.

[0018] In one embodiment, the fixed insertion interface is located in the middle of the sliding track. Two second extrusion columns are arranged in the sliding track. Two docking grooves are symmetrically arranged on the docking rod, and the docking grooves are adapted to the second extrusion columns. Two docking grooves are symmetrically arranged on the docking rod, and the docking grooves are adapted to the second extrusion columns. An insertion hole for inserting the first extrusion column is arranged on the second extrusion column, and the length of the docking rod is greater than the length of the push column.

[0019] In one embodiment, one end of the second extrusion column located in the fixed insertion interface is provided with an inclined surface.

[0020] In one embodiment, the cross section of the second extrusion column is rectangular or square.

[0021] Another object of the present application is to provide a construction method for a rotation friction energy dissipation precast coupling beam. Based on the rotation friction energy dissipation precast coupling beam connection structure as described above, the construction method is characterized by including the following steps:

[0022] Step S1: Before construction, lift the precast coupling beam to the position where it needs to be installed. Lift the main beam and the secondary beam respectively. After being checked and aligned by workers, insert the insertion mechanism on the secondary beam into the receiving groove of the main beam and plug it with the receiving mechanism.

[0023] Step S2: After insertion, check whether the second extrusion column on the main beam protrudes from the detection observation hole, and check whether the main beam and the secondary beam are correctly plugged.

[0024] Step S3: After correct plugging, insert the fixing rod from one side of the main beam and insert the expansion screw from the other side. Insert the fixing rod into the expansion screw. After insertion, install the fixing sleeve on the fixing rod to ensure that the fixing rod is correctly inserted.

[0025] The beneficial effects of the rotation friction energy dissipation precast coupling beam connection structure and the construction method provided by the present application are as follows:

[0026] 1. When the insertion mechanism is plugged with the receiving mechanism, when the docking rod is inserted into the fixed insertion interface, the second extrusion columns on both sides are extruded, driving the second extrusion columns on both sides to move towards both sides inside the sliding holes. After splicing, the docking rod extrudes the second extrusion columns into the detection observation holes on the main beam, detecting the docking completion degree of the precast beam during the splicing process, avoiding potential hidden dangers in the docking that affect the use of the coupling beam, thereby ensuring the stability of the coupling beam and preventing collapse from causing personal injury and financial losses.

[0027] 2. During the plugging process, the first friction plate and the second friction plate are plugged, and then the fixing rod and the expansion screw are used for fixation to ensure the rotation friction effect on the coupling beam.

[0028] 3. The second extrusion post is inserted into the docking groove, and the pushing post pushes the extrusion spring, while also pushing the first extrusion post to insert into the second extrusion post, protecting the insertion of the secondary beam and the main beam, facilitating the quick insertion of the main beam and the secondary beam, and having a stable insertion effect, ensuring the protection of the connection node of the connecting beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 Front view overall structure schematic diagram of the precast connecting beam provided by the embodiment of the present application;

[0031] Figure 2 Rear view overall structure schematic diagram of the precast connecting beam provided by the embodiment of the present application;

[0032] Figure 3 Structure schematic diagram of the insertion mechanism in the rotational friction energy dissipation precast connecting beam connection structure provided by the embodiment of the present application;

[0033] Figure 4 For Figure 3 Enlarged view of A in

[0034] Figure 5 Structure schematic diagram of the receiving mechanism in the rotational friction energy dissipation precast connecting beam connection structure provided by the embodiment of the present application;

[0035] Figure 6 Stereo structure schematic diagram after the insertion of the insertion mechanism and the receiving mechanism provided by the embodiment of the present application;

[0036] Figure 7 Partial structure schematic diagram in the rotational friction energy dissipation precast connecting beam connection structure provided by the embodiment of the present application.

[0037] Among them, the reference numerals in the drawings:

[0038] 1. Main beam; 11. Secondary beam; 12. Fixed sleeve; 13. Expansion screw; 14. Fixed rod; 15. Detection and observation hole; 2. Insertion mechanism; 21. Extension plate; 211. First connecting rod; 212. Second connecting rod; 22. First friction plate; 221. Horizontal buffer sleeve; 222. Horizontal buffer spring; 23. Extrusion sleeve; 231. Vertical buffer sleeve; 232. Vertical buffer spring; 24. Docking rod; 241. Docking groove; 25. Push plate; 251. Push column; 3. Receiving mechanism; 31. Second friction plate; 32. Sliding track; 321. Fixed insertion interface; 33. Push hole; 331. First extrusion column; 332. Extrusion spring; 34. Second extrusion column; 341. Sliding hole. Detailed implementation manners

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0041] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application 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 cannot be understood as a limitation to the present application.

[0042] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0043] As Figures 1-7As shown in the figure, the rotational friction energy dissipation precast coupling beam connection structure provided by the embodiments of the present application will be described. The rotational friction energy dissipation precast coupling beam connection structure is used to connect the main beam 1 and the secondary beam 11, and includes: an insertion mechanism 2, a receiving mechanism 3, and a detection mechanism. Among them, the insertion mechanism 2 includes: an extension plate 21 protruding from one end of the secondary beam 11, the cross-sectional area of the extension plate 21 is smaller than that of the secondary beam 11, and two parallel and spaced first friction plates 22 are provided on the extension plate 21; a docking rod 24 protrudes from one end of each first friction plate 22 away from the extension plate 21.

[0044] Among them, a receiving groove is provided at one end of the main beam 1. After the secondary beam 11 and the main beam 1 are docked, the extension plate 21 just inserts into the port position of the receiving groove. The receiving mechanism 3 includes: three parallel and spaced second friction plates 31 protruding from the bottom of the receiving groove, and the two first friction plates 22 and the three second friction plates 31 are inserted in a staggered and friction manner.

[0045] Among them, the detection mechanism includes two sliding tracks 32, the two sliding tracks 32 are respectively arranged at the intervals at the bottom of the three second friction plates 31, and a fixed insertion opening 321 for the docking rod 24 to insert is provided on the sliding track 32; a sliding hole 341 is provided in the sliding track 32, and a second extrusion column 34 is slidably arranged in the sliding hole 341. Two second extrusion columns 34 are symmetrically arranged with the fixed insertion opening 321 as the symmetry axis, the length direction of the second extrusion column 34 is perpendicular to the axis of the fixed insertion opening 321, and a detection observation hole 15 is provided on the side wall of the receiving groove of the main beam 1 corresponding to the position of the second extrusion column 34. The detection observation hole 15 allows the second extrusion column 34 to protrude to the outside of the main beam 1 through it. When the insertion mechanism 2 and the receiving mechanism 3 are inserted in place, the docking rod 24 inserts into the fixed insertion opening 321 and pushes the two second extrusion columns 34 to the detection observation hole 15. The staff can see the second extrusion column 34 protruding from the outer surface of the main beam 1 through the detection observation hole 15 on the outside of the main beam 1. At this time, it indicates that the secondary beam 11 and the main beam 1 are assembled well by insertion.

[0046] As Figure 3 、 Figure 4 and Figure 6As shown, in this embodiment, a set of first connecting rods 211 and second connecting rods 212 arranged parallel up and down are provided on the extension plate 21. The two first connecting rods 211 and the two second connecting rods 212 form the four vertices of a rectangle. In this embodiment, among the three second friction plates 31, the second friction plate 31 on one side contacts the side wall of the accommodating groove, and there is a gap between the second friction plate 31 on the other side and the side wall of the accommodating groove, where the first connecting rod 211 is located at this gap position. In order to fill this gap, extrusion sleeves 23 are provided on the two first connecting rods 211; a plurality of vertical buffer sleeves 231 are provided at equal arc distances on the surface of the extrusion sleeve 23 parallel to the first friction plate 22. The vertical buffer sleeves 231 are inserted into this gap position and can elastically abut against the side wall of the accommodating groove; the first friction plate 22 is located between the first connecting rod 211 and the second connecting rod 212; a horizontal buffer sleeve 221 is provided on the side surface of the first friction plate 22, and the horizontal buffer sleeve 221 elastically abuts against the side wall of the accommodating groove. Specifically, a vertical buffer spring 232 is provided inside the vertical buffer sleeve 231, and a horizontal buffer spring 222 is provided inside the horizontal buffer sleeve 221 for realizing elastic abutment with the side wall of the accommodating groove.

[0047] In this embodiment, as Figures 4-7 shown, at one end of the first connecting rod 211 and the second connecting rod 212 away from the extension plate 21, a push plate 25 is provided. One first connecting rod 211 and one second connecting rod 212 fix one push plate 25; two push posts 251 are provided at intervals on each push plate 25. At the corresponding position on the sliding track 32, a push hole 33 is provided. Inside the push hole 33, a first extrusion post 331 and an extrusion spring 332 are provided; the first extrusion post 331 is arranged close to the second extrusion post 34. The first extrusion post 331 is connected to the extrusion spring 332. When the push post 251 is inserted into the push hole 33, it abuts against the extrusion spring 332, and the extrusion spring 332 then pushes the first extrusion post 331 to approach the second extrusion post 34.

[0048] Specifically, the fixed plug-in interface 321 is located in the middle of the sliding track 32, and two second extrusion columns 34 are symmetrically arranged in the sliding track 32; two docking grooves 241 are symmetrically arranged on the docking rod 24, and the docking grooves 241 are adapted to the second extrusion columns 34; the second extrusion column 34 is provided with a plug-in hole for inserting the first extrusion column 331, and the length of the docking rod 24 is greater than the length of the push column 251. During the assembly process, the first friction plate 22 is inserted into the gap between the second friction plate 31, and the length of the docking rod 24 is greater than the length of the push column 251. The docking rod 24 is first inserted into the fixed plug-in interface 321, and the two second extrusion columns 34 are first pushed outward. At this time, the plug-in hole on the second extrusion column 34 is misaligned with the push hole 33, and the first extrusion column 331 cannot be inserted into the plug-in hole. When the docking rod 24 is inserted into the bottom of the fixed plug-in port 321, the second extrusion column 34 protrudes out of the outside of the main beam 1 through the detection observation hole 15. After the staff determines that the secondary beam 11 and the main beam 1 are docked in place; the staff presses the second extrusion column 34 inward so that one end of the second extrusion column 34 is inserted into the docking groove 241 of the docking rod 24. When the second extrusion column 34 is plugged into the docking groove 241, the push hole 33 is aligned and connected with the plug-in hole. The first extrusion column 331 is inserted into the plug-in hole under the elastic force of the extrusion spring 332 to complete the plug-in action, so that the second extrusion column 34 will not loosen or fall off due to vibration.

[0049] In order to further ensure the firmness of the plug-in connection between the secondary beam 11 and the main beam 1, through holes with the same axis are provided on the side wall of the main beam 1, the extrusion sleeve 23, the first friction plate 22 and the second friction plate 31. The expansion screw 13 is inserted into one end of the through hole, and the fixing rod 14 is inserted into the other end. After the fixing rod 14 is plugged into the expansion screw 13, the fixing sleeve 12 is installed on one end of the fixing rod 14. The fixing sleeve 12 is threadedly connected with the expansion screw 13 to clamp the fixing rod 14 in the middle. At the same time, it is also used to ensure that the first friction plate 22, the second friction plate 31 and the extrusion sleeve 23 are in an extruded state to ensure the friction effect. Among them, the extrusion sleeve 23 is convexly provided with a convex column inserted into the through hole on the side wall of the main beam 1 to complete the limited installation of the extrusion sleeve 23. The extrusion sleeve 23, the vertical buffer sleeve 231 and the horizontal buffer sleeve 221 are all used to increase the friction effect, protect the connection nodes of the prefabricated beams, and improve the seismic resistance of the main beam 1 and the secondary beam 11 after splicing.

[0050] In this embodiment, in order to facilitate the docking rod 24 to spread the two second extrusion columns 34 apart, an inclined surface is set at one end of the second extrusion column 34 located in the fixed plug-in port 321. The inclined surface has a guiding function. When the docking rod 24 presses against the inclined surface, it is convenient to spread it apart, so that the second extrusion column 34 moves on the sliding track 32.

[0051] In this embodiment, the cross-section of the second extrusion post 34 is rectangular or square, and the sliding hole 341 is also a rectangular hole or a square hole, ensuring that the second extrusion post 34 does not rotate during movement, and ensuring that the subsequent first extrusion post 331 can be normally inserted into the insertion hole.

[0052] This embodiment also provides a construction method for a rotational friction energy-dissipating precast coupling beam. Based on the rotational friction energy-dissipating precast coupling beam connection structure described above, the construction method includes the following steps:

[0053] Step S1: Before construction, lift the precast coupling beam to the position where it needs to be installed. Lift the main beam 1 and the secondary beam 11 respectively. After being checked and aligned by workers, insert the insertion mechanism 2 on the secondary beam 11 into the receiving groove of the main beam 1 and plug it into the receiving mechanism 3.

[0054] Step S2: After insertion, check whether the second extrusion post 34 on the main beam 1 protrudes from the detection observation hole 15, and check whether the main beam 1 and the secondary beam 11 are correctly plugged. After confirming that there is no error, press the second extrusion post 34 back so that the second extrusion post 34 is inserted into the docking groove 241, and the first extrusion post 331 is inserted into the insertion hole.

[0055] Step S3: After correct plugging, insert the fixing rod 14 from one side of the main beam 1 and the expansion screw 13 from the other side. Insert the fixing rod 14 into the expansion screw 13. After insertion, install the fixing sleeve 12 on the fixing rod 14 to ensure that the fixing rod 14 is correctly inserted.

[0056] Specifically, the main beam 1 and the secondary beam 11 are lifted separately by a crane. After being checked by the construction personnel, the secondary beam 11 is pushed into the receiving groove of the main beam 1. The workers push the secondary beam 11 to drive the docking rod 24 to be inserted into the fixed insertion port 321 in the main beam 1. When the docking rod 24 moves, it squeezes the second extrusion posts 34 on both sides, driving the second extrusion posts 34 on both sides to move towards both sides inside the sliding hole 341. After the second extrusion post 34 moves a certain distance, when the secondary beam 11 is continuously pushed, it drives the first connecting rod 211 and the second connecting rod 212 to move, thereby driving the push plate 25 to move. The push plate 25 moves to insert the push post 251 into the push hole 33, squeezes the compression spring 332, and the push post 251 presses against the compression spring 332 to drive the first extrusion post 331 to move. The first extrusion post 331 abuts against the second extrusion post 34. After splicing is completed, the docking rod 24 squeezes the second extrusion post 34 into the detection observation hole 15 on the main beam 1 and protrudes a part, playing a warning role, facilitating the detection by the staff, and ensuring the correct plugging of the main beam 1 and the secondary beam 11.

[0057] After the insertion is completed, the through holes on the extrusion sleeve 23 are aligned with the through holes on the first friction plate 22, the second friction plate 31, and the main beam 1, ensuring that the fixing rod 14 and the expansion screw 13 can be directly placed later to fix the extrusion sleeve 23, the first friction plate 22, and the second friction plate 31, and ensuring the rotational friction effect of the docking beam.

[0058] When the staff determines that the secondary beam 11 and the main beam 1 are accurately docked, the staff presses and pushes back the second extrusion column 34, and pushes one end of the second extrusion column 34 back and inserts it into the docking grooves 241 on both sides of the docking rod 24 to fix the docking rod 24, ensuring the insertion of the main beam 1 and the secondary beam 1, and ensuring the flatness of the outer side of the main beam 1; at the same time, after the second extrusion column 34 is pushed back in place, the extrusion spring 332 automatically pushes the first extrusion column 331 into the insertion hole of the second extrusion column 34 to prevent the second extrusion column 34 from moving again.

[0059] The horizontal buffer sleeves 221 on both sides of the first friction plate 22 are in contact with and extruded against the inner wall of the main beam 1, reducing the friction between the first friction plate 22 and the second friction plate 31, extending the service life of the second friction plate 31 and the first friction plate 22. At the same time, the vertical buffer sleeve 231 on the extrusion sleeve 23 is in contact with and extruded against the inner wall of the main beam 1, enhancing the extrusion strength between the extrusion sleeve 23, the first friction plate 22, and the second friction plate 31, enhancing the friction effect between the first friction plate 22 and the second friction plate 31 during vibration, protecting the connection nodes of the precast beam, and improving the seismic resistance of the main beam 1 and the secondary beam 1 after splicing.

[0060] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A rotating friction energy dissipation prefabricated connecting beam connection structure, used to connect a main beam (1) and a secondary beam (11) together, characterized in that: include: Insertion mechanism (2), receiving mechanism (3) and detection mechanism; The insertion mechanism (2) comprises: an extension plate (21) protruding from one end of the secondary beam (11); The extension plate (21) is provided with two first friction plates (22) spaced apart from each other in parallel; a docking rod (24) is protrudingly provided at one end of the first friction plate (22) away from the extension plate (21); One end of the main beam (1) is provided with a receiving groove, and the receiving mechanism (3) comprises: three parallel and spaced second friction plates (31) protruding from the bottom of the receiving groove, and two of the first friction plates (22) and three of the second friction plates (31) are staggered and inserted; The detection mechanism comprises two sliding rails (32), the two sliding rails (32) are respectively arranged at the interval bottom of the three second friction plates (31), and the sliding rails (32) are provided with a fixed plug-in interface (321) for the docking rod (24) to be inserted; a second extrusion column (34) is slidably arranged in the sliding rails (32), the length direction of the second extrusion column (34) is perpendicular to the axis of the fixed plug-in interface (321), and the main beam (1) is provided with a detection observation hole (15) at a position corresponding to the second extrusion column (34); When the insertion mechanism (2) and the receiving mechanism (3) are plugged into place, the docking rod (24) is inserted into the fixed plug interface (321) and the second extrusion column (34) is pushed to the detection observation hole (15).

2. The rotating friction energy dissipation prefabricated connecting beam connection structure according to claim 1, characterized in that: The extension plate (21) is provided with a group of first connecting rods (211) and second connecting rods (212) which are arranged in parallel up and down; An extrusion sleeve (23) is provided on the two first connecting rods (211); a plurality of vertical buffer sleeves (231) are provided at equal arc distances on a surface of the extrusion sleeve (23) parallel to the first friction plate (22); The first friction plate (22) is located between the first connecting rod (211) and the second connecting rod (212); A horizontal buffer sleeve (221) is provided on the side surface of the first friction plate (22).

3. The rotating friction energy dissipation prefabricated connecting beam connection structure according to claim 2, characterized in that: A vertical buffer spring (232) is provided in the vertical buffer sleeve (231), and a horizontal buffer spring (222) is provided in the horizontal buffer sleeve (221).

4. The rotational friction energy dissipation prefabricated coupling beam connection structure according to claim 3, characterized in that: A pushing plate (25) is provided on one end of the first connecting rod (211) and the second connecting rod (212) away from the extension plate (21), and a pushing column (251) is provided on the pushing plate (25). A pushing hole (33) is provided at a corresponding position on the sliding track (32), and a first squeezing column (331) and a squeezing spring (332) are provided in the pushing hole (33); when the pushing column (251) is inserted into the pushing hole (33), it pushes the squeezing spring (332).

5. The rotating friction energy dissipation prefabricated connecting beam connection structure according to claim 4, characterized in that: The main beam (1), the extrusion sleeve (23), the first friction plate (22) and the second friction plate (31) are all provided with through holes with the same axis, an expansion screw (13) is inserted into one end of the through hole, and a fixing rod (14) is inserted into the other end, and after the fixing rod (14) is plugged into the expansion screw (13), a fixing sleeve (12) is installed on one end of the fixing rod (14).

6. The rotational friction energy dissipation prefabricated coupling beam connection structure according to claim 5, characterized in that: The fixed plug interface (321) is located in the middle of the sliding track (32), two second extrusion columns (34) are arranged in the sliding track (32), and two docking grooves (241) are symmetrically arranged on the docking rod (24), and the docking grooves (241) are adapted to the second extrusion column (34); the second extrusion column (34) is provided with an insertion hole for the first extrusion column (331) to be inserted, and the length of the docking rod (24) is greater than the length of the pushing column (251).

7. The rotational friction energy dissipation prefabricated coupling beam connection structure according to claim 6, characterized in that: An inclined surface is provided on one end of the second extrusion column (34) located in the fixed insertion port (321).

8. The rotating friction energy dissipation prefabricated coupling beam connection structure according to claim 7, characterized in that: The cross section of the second extruded column (34) is rectangular or square.

9. A construction method of a rotational friction energy dissipation prefabricated coupling beam, based on the rotational friction energy dissipation prefabricated coupling beam connection structure according to any one of claims 5 to 8, characterized in that: The construction method comprises the following steps: Step S1, before construction, the prefabricated connecting beam is hoisted to the position where it needs to be installed, and the main beam (1) and the secondary beam (11) are hoisted respectively. After the workers check and align them, they insert the insertion mechanism (2) on the secondary beam (11) into the receiving groove of the main beam (1) and plug it into the receiving mechanism (3); Step S2: after insertion, check whether the second extrusion column (34) on the main beam (1) protrudes from the inspection observation hole (15), and check whether the main beam (1) and the secondary beam (11) are correctly plugged in; Step S3, after correct insertion, insert the fixing rod (14) from one side of the main beam (1), insert the expansion screw (13) from the other side, insert the fixing rod (14) into the expansion screw (13), and after insertion, install the fixing sleeve (12) on the fixing rod (14) to ensure that the fixing rod (14) is correctly inserted.

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