Prefabricated building wallboard connecting piece capable of dissipating energy and prefabricated building wallboard

Abstract

The invention relates to a prefabricated building wallboard connecting piece capable of dissipating energy and a prefabricated building wallboard, the prefabricated building wallboard connecting piece comprises a plurality of first connecting pieces and a plurality of second connecting pieces, and the first connecting pieces and the second connecting pieces are arranged at the top of the wallboard and used for connecting the wallboard and an upper floor beam slab; the first connecting piece comprises a first supporting groove and a first supporting piece, the first supporting piece is matched with the first supporting groove in an inserted mode, and the first connecting piece is configured to be in sliding friction between the first supporting groove and the first supporting piece and generate friction damping when the upper floor beam plate and the wall plate are relatively close to each other; the second connecting piece comprises a second supporting groove and a second supporting piece, the second supporting piece is matched with the second supporting groove in an inserted mode, and the second connecting piece is configured to be in sliding friction between the second supporting groove and the second supporting piece and generate friction damping when the upper floor beam plate and the wall plate are relatively away from each other; the two connecting pieces generate friction damping in the vertical direction and the horizontal direction.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of prefabricated buildings, and in particular to a prefabricated building wall plate connecting piece capable of energy dissipation. BACKGROUND

[0002] The connecting joint of a prefabricated building component is a core technology for developing prefabricated buildings, and the structural components (including beams, plates, columns and shear walls) in buildings and the building partition walls and enclosure walls are all prefabricated components and connecting pieces suitable for assembly construction. At present, prefabricated wall plates are widely used in prefabricated buildings, such as light aerated concrete strip wall (ALC), which is connected to the main structure by simple anchor bolts and steel sheets. The prefabricated wall plate filled in the prefabricated building frame is a non-structural component and does not bear the load of the main structure. The connection between the prefabricated wall plate and the main structure is required not to increase the stiffness of the main structure or to have as little influence as possible on the stiffness of the main structure, so as to reduce the increase in the seismic action borne by the structure. The degree to which this goal can be achieved is mainly determined by the connection structure between the prefabricated wall plate and the main structure. The design requires that the partition wall plate and the surrounding beam column and other structural components are connected flexibly and have sufficient connection strength, so that the partition wall does not tilt or collapse when subjected to forces outside the wall plane.

[0003] On the other hand, great efforts are made to develop and popularize vibration isolation and damping technology, and various technical standards have been introduced, such as the Building Vibration Isolation Design Standard GB / T 51408-2021, the Building Energy Dissipation Technology JGJ297-2013, the Building Energy Dissipation Damper JGJ2009, etc. At present, the design idea of building damping is to increase dampers in the building, such as friction pendulum dampers, BRB buckling-restrained brace, etc. However, the increased dampers also increase the cost of the building. SUMMARY

[0004] The first aspect of the application provides a prefabricated building wall plate connecting piece capable of energy dissipation. The prefabricated building wall plate connecting piece can simultaneously connect the wall plate and the upper floor beam plate and function as a damping energy dissipation device, thereby saving the cost of separately arranging dampers in the building structure.

[0005] The prefabricated building wallboard connecting piece capable of energy dissipation provided in the first aspect of the application comprises a plurality of first connecting pieces and a plurality of second connecting pieces, the first connecting pieces and the second connecting pieces are respectively arranged at the top of the wallboard and are used for connecting the wallboard and the upper floor beam slab; the first connecting piece comprises a first support slot and a first support piece, the first support piece is inserted and matched with the first support slot, the first connecting piece is configured to slide and rub between the first support slot and the first support piece and generate frictional damping when the upper floor beam slab is relatively close to the wallboard; the second connecting piece comprises a second support slot and a second support piece, the second support piece is inserted and matched with the second support slot, the second connecting piece is configured to slide and rub between the second support slot and the second support piece and generate frictional damping when the upper floor beam slab is relatively far away from the wallboard; the directions in which the first connecting piece and the second connecting piece generate frictional damping include the vertical direction and the horizontal direction.

[0006] In addition, the prefabricated building wallboard connecting piece capable of energy dissipation provided in the application also has the following additional technical features: In an optional scheme, the first support slot comprises a first side plate, a second side plate and a first insertion plate, the first side plate and the second side plate are arranged at intervals, and the first insertion plate is located between the first side plate and the second side plate; the first support piece comprises a first vertical plate and a second vertical plate arranged at intervals, the first vertical plate and the second vertical plate have a first insertion slot therebetween, the width of the first insertion slot is slightly greater than the thickness of the first insertion plate, and the lower ends of the first vertical plate and the second vertical plate are respectively provided with a first lower plate and a second lower plate; The first support slot and the first support piece have a first connection state, in the first connection state, the first insertion plate is partially inserted into the first insertion slot, the first lower plate abuts against the inner wall of the first side plate, the second lower plate abuts against the inner wall of the second side plate, and the included angles between the first vertical plate and the first lower plate and between the second vertical plate and the second lower plate are obtuse angles.

[0007] In an optional scheme, the inner walls of the first side plate and the second side plate are respectively provided with a first tooth surface, the first tooth surface comprises a plurality of teeth arranged in steps from one side of the first support piece to the other side of the first support slot, and the upper ends of the first side plate and the second side plate are respectively provided with a first limiting baffle.

[0008] In an optional scheme, the first support slot and the first support piece have a second connection state, when an external force causes the upper floor beam slab to be relatively close to the wallboard, the first support slot and the first support piece move towards each other and change from the first connection state to the second connection state; In the second connection state, the first vertical plate and the second vertical plate are pressed to generate a reaction force on the first lower plate and the second lower plate respectively, so that the first vertical plate and the second vertical plate press the first plug plate and generate frictional damping by the surface friction coefficient of the three, and the included angle between the first vertical plate and the first lower plate and the included angle between the second vertical plate and the second lower plate are a right angle or an acute angle in the second connection state.

[0009] In an optional scheme, the first support groove further comprises a first connecting plate located at one side of the bottom of the first plug plate, and first support reinforcing ribs are respectively arranged between the outer side walls of the first side plate and the second side plate and the first connecting plate, and the first support groove is connected with the wall plate through the first connecting plate; the first support member further comprises a second connecting plate located at one side of the top of the first vertical plate, and the first support member is connected with the upper floor beam plate through the second connecting plate.

[0010] In an optional scheme, the second support groove comprises a third side plate, a fourth side plate and a second plug plate, the third side plate and the fourth side plate are arranged at intervals, and the second plug plate is located between the third side plate and the fourth side plate; the second support member comprises a third vertical plate and a fourth vertical plate arranged at intervals, the third vertical plate and the fourth vertical plate have a second insertion groove therebetween, and the width of the second insertion groove is slightly greater than the thickness of the second plug plate, and the lower ends of the third vertical plate and the fourth vertical plate are respectively provided with a third lower plate and a fourth lower plate. The second support groove and the second support member have a third connection state, in which the second plug plate is partially inserted into the second insertion groove, the third lower plate abuts against the inner wall of the third side plate, the fourth lower plate abuts against the inner wall of the fourth side plate, and the included angle between the third vertical plate and the third lower plate and the included angle between the fourth vertical plate and the fourth lower plate are both an acute angle.

[0011] In an optional scheme, the inner walls of the third side plate and the fourth side plate are respectively provided with a second tooth surface comprising a plurality of teeth arranged in steps from one side of the second support groove to the other side of the second support member, and the upper ends of the third side plate and the fourth side plate are respectively provided with a second limiting baffle.

[0012] In an optional scheme, the second support groove and the second support member have a fourth connection state, in which when an external force causes the upper floor beam plate to move away from the wall plate, the second support groove and the second support member move in opposite directions and change from the third connection state to the fourth connection state. In the fourth connection state, the third vertical plate and the fourth vertical plate move upward to generate reaction force on the third lower plate and the fourth lower plate respectively by the third side plate and the fourth side plate, so that the third vertical plate and the fourth vertical plate press the second insertion plate and generate frictional damping by the surface friction coefficient of the three, and the included angle between the third vertical plate and the third lower plate and the included angle between the fourth vertical plate and the fourth lower plate are a right angle or an obtuse angle in the fourth connection state.

[0013] In an alternative, the second support groove further comprises a third connecting plate located at one side of the bottom of the second insertion plate, and a second support reinforcing rib is arranged between the outer side wall of the third side plate and the third connecting plate and between the outer side wall of the fourth side plate and the third connecting plate respectively, and the second support groove is connected with the wall plate through the third connecting plate; the second support member further comprises a fourth connecting plate located at one side of the top of the third vertical plate, and the second support member is connected with the upper floor beam plate through the fourth connecting plate.

[0014] The beneficial effects of the present application are:

[0015] In the present application, the prefabricated building wall plate connecting piece connects the wall plate and the upper floor beam plate through the first connecting piece and the second connecting piece. Since the first connecting piece can generate sliding friction and generate frictional damping when the upper floor beam plate and the wall plate are relatively close to each other, and the second connecting piece can generate sliding friction and generate frictional damping when the upper floor beam plate and the wall plate are relatively far away from each other, the first connecting piece and the second connecting piece can play the role of a damping energy absorber while connecting the wall plate and the upper floor beam plate, thereby saving the cost of separately setting a damper for the building structure as a building energy dissipation device during an earthquake.

[0016] The second aspect of the present application provides a prefabricated building wall plate, which comprises a wall plate, an upper floor beam plate and a connecting piece, the connecting piece is used to connect the wall plate and the upper floor beam plate, and the connecting piece is the energy-dissipating prefabricated building wall plate connecting piece provided in the first aspect. Since the energy-dissipating prefabricated building wall plate connecting piece provided in the first aspect can play the role of a damping energy absorber and save the cost of separately setting a damper for the building structure, the building using the prefabricated building wall plate has a lower construction cost compared with the building separately setting a damping energy absorber.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The overall assembly structure schematic diagram of the prefabricated building wall plate connecting piece provided in the present application; Figure 2A schematic diagram of the structure of the first connector provided in this application in the first connected state; Figure 3 for Figure 2 A schematic diagram of the planar structure of the first connector in the first connected state; Figure 4 A schematic diagram of the structure of the first connector provided in this application in the second connection state; Figure 5 A schematic diagram of the structure of the second connector provided in this application in the third connection state; Figure 6 for Figure 5 A schematic diagram of the planar structure of the second connector in the third connection state; Figure 7 A schematic diagram of the structure of the second connector provided in this application in the fourth connection state.

[0019] Reference numerals: Wall panel 1, First connector 2, First support groove 21, First side plate 211, Second side plate 212, First insert plate 213, First toothed surface 214, First limiting stop bar 215, First connecting plate 216, First support reinforcing rib 217, First support member 22, First vertical plate 221, Second vertical plate 222, First slot 223, First lower plate 224, Second lower plate 225, Second connecting plate 226, Second connector 3, Second support groove 31, Third side plate 311, Fourth side plate 312, Second insert plate 313, Second toothed surface 314, Second limiting stop bar 315, Third connecting plate 316, Second support reinforcing rib 317, Second support member 32, Third vertical plate 321, Fourth vertical plate 322, Second slot 323, Third lower plate 324, Fourth lower plate 325, Fourth connecting plate 326, Upper floor beam 4.

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0021] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0022] It should be understood that the described embodiments are merely some embodiments of this application, and not all embodiments. All other technical solutions obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the description of the embodiments of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0024] It should be understood that the term "and / or" used herein only means an association relationship of the associated objects, and can represent three relationships, for example, A and / or B, which can represent three cases of existence of A alone, existence of A and B together, and existence of B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0025] It should be noted that the terms "upper", "lower", "left", "right" and the like described in the embodiments of the present application are described from the angle shown in the drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when referring to an element connected to another element "on" or "under", it can be directly connected to another element "on" or "under", or indirectly connected to another element "on" or "under" through an intermediate element.

[0026] As shown in Figures 1-7 The first aspect of the embodiments of the present application provides a prefabricated building wallboard connecting piece capable of energy dissipation, which comprises a plurality of first connecting pieces 2 and a plurality of second connecting pieces 3, the first connecting pieces 2 and the second connecting pieces 3 are arranged at the top of the wallboard 1 and used for connecting the wallboard 1 and the upper floor beam slab 4; the first connecting piece 2 comprises a first support groove 21 and a first support piece 22, the first support piece 22 is inserted and matched with the first support groove 21, the first connecting piece 2 is configured to slide and rub between the first support groove 21 and the first support piece 22 and generate frictional damping when the upper floor beam slab 4 is relatively close to the wallboard 1; the second connecting piece 3 comprises a second support groove 31 and a second support piece 32, the second support piece 32 is inserted and matched with the second support groove 31, the second connecting piece 3 is configured to slide and rub between the second support groove 31 and the second support piece 32 and generate frictional damping when the upper floor beam slab 4 is relatively far away from the wallboard 1; the direction of the frictional damping generated by the first connecting piece 2 and the second connecting piece 3 includes the vertical direction and the horizontal direction.

[0027] In the embodiment, the connectors arranged on the top of the wallboard 1 are divided into A type and B type, i.e. the first connector 2 and the second connector 3, which can be arranged at intervals along the length direction of the wallboard 1. The working principle is that when the building produces positive displacement in the first half cycle of the earthquake, the spacing between the upper floor beam plate 4 and the wallboard 1 tends to decrease, at which time the first connector 2 produces damping effect; when the building produces positive displacement in the second half cycle of the earthquake, the spacing between the upper floor beam plate 4 and the wallboard 1 tends to increase, at which time the second connector 3 produces damping effect. It should be noted that the number and interval of the first connector 2 and the second connector 3 can be preset according to the length of the wallboard 1 and actual requirements, and therefore the present disclosure does not make specific limitation.

[0028] In the embodiment, the prefabricated building wallboard connector connects the wallboard 1 and the upper floor beam plate 4 through the first connector 2 and the second connector 3. Since the first connector 2 can produce sliding friction and generate friction damping when the upper floor beam plate 4 and the wallboard 1 are relatively close, and the second connector 3 can produce sliding friction and generate friction damping when the upper floor beam plate 4 and the wallboard 1 are relatively far apart, the first connector 2 and the second connector 3 can play the role of damping energy absorber while connecting the wallboard 1 and the upper floor beam plate 4, serving as a building energy dissipation device during the earthquake, thereby saving the cost of separately arranging dampers in the building structure.

[0029] As shown in FIG. 1, Figures 2-4 In a specific embodiment, the first support groove 21 includes a first side plate 211, a second side plate 212 and a first plug plate 213, the first side plate 211 and the second side plate 212 are arranged at intervals, and the first plug plate 213 is located between the first side plate 211 and the second side plate 212; the first support 22 includes a first vertical plate 221 and a second vertical plate 222 arranged at intervals, and the first vertical plate 221 and the second vertical plate 222 have a first plug groove 223 therebetween, and the width of the first plug groove 223 is slightly greater than the thickness of the first plug plate 213; the lower ends of the first vertical plate 221 and the second vertical plate 222 are respectively provided with a first lower plate 224 and a second lower plate 225; the first support groove 21 and the first support 22 have a first connection state, in which the first plug plate 213 is partially inserted into the first plug groove 223, the first lower plate 224 abuts against the inner wall of the first side plate 211, the second lower plate 225 abuts against the inner wall of the second side plate 212, and the included angles between the first vertical plate 221 and the first lower plate 224 and between the second vertical plate 222 and the second lower plate 225 are obtuse angles.

[0030] As shown in FIG. 1, Figures 2-4As shown in the embodiment, the inner walls of the first side plate 211 and the second side plate 212 are respectively provided with a first tooth surface 214, which comprises a plurality of teeth arranged in steps from one side of the first support 22 to the other side of the first support groove 21. The upper ends of the first side plate 211 and the second side plate 212 are respectively provided with a first limiting stop 215.

[0031] As shown in the embodiment, the first support groove 21 and the first support 22 have a second connection state. When an external force causes the upper floor beam plate 4 to relatively approach the wall plate 1, the first support groove 21 and the first support 22 move towards each other and change from the first connection state to the second connection state. In the second connection state, the first vertical plate 221 and the second vertical plate 222 press down to generate a reaction force on the first lower plate 224 and the second lower plate 225, respectively, so that the first vertical plate 221 and the second vertical plate 222 respectively press the first plug plate 213 and generate frictional damping through the surface friction coefficient of the three. In the second connection state, the included angle between the first vertical plate 221 and the first lower plate 224, and the included angle between the second vertical plate 222 and the second lower plate 225 are a right angle or an acute angle. Figures 2-4 As shown in the embodiment, the first support groove 21 further comprises a first connecting plate 216 located on one side of the bottom of the first plug plate 213. The outer walls of the first side plate 211 and the second side plate 212 are respectively provided with a first support reinforcing rib 217 between the first connecting plate 216. The first support groove 21 is connected with the wall plate 1 through the first connecting plate 216. The first support 22 further comprises a second connecting plate 226 located on one side of the top of the first vertical plate 221. The first support 22 is connected with the upper floor beam plate 4 through the second connecting plate 226.

[0032] Figures 2-4 Specifically, the top of the second connecting plate 226 is provided with a long bolt groove, and the fastening bolt is installed through the long bolt groove to connect with the upper floor beam plate 4. In the initial installation, the included angle between the first lower plate 224 and the first vertical plate 221 is greater than 90°, and the included angle between the second lower plate 225 and the second vertical plate 222 is greater than 90°. The thickness and end inclination of the first lower plate 224 and the second lower plate 225 are matched with the inclination and width of the first tooth surface 214 of the inner walls of the first side plate 211 and the second side plate 212, i.e. in the first connection state.

[0033] As shown in the embodiment, the first support groove 21 further comprises a first connecting plate 216 located on one side of the bottom of the first plug plate 213. The outer walls of the first side plate 211 and the second side plate 212 are respectively provided with a first support reinforcing rib 217 between the first connecting plate 216. The first support groove 21 is connected with the wall plate 1 through the first connecting plate 216. The first support 22 further comprises a second connecting plate 226 located on one side of the top of the first vertical plate 221. The first support 22 is connected with the upper floor beam plate 4 through the second connecting plate 226.

[0034] As shown in the embodiment, the first support groove 21 further comprises a first connecting plate 216 located on one side of the bottom of the first plug plate 213. The outer walls of the first side plate 211 and the second side plate 212 are respectively provided with a first support reinforcing rib 217 between the first connecting plate 216. The first support groove 21 is connected with the wall plate 1 through the first connecting plate 216. The first support 22 further comprises a second connecting plate 226 located on one side of the top of the first vertical plate 221. The first support 22 is connected with the upper floor beam plate 4 through the second connecting plate 226. Figures 1-4 ​As shown, the specific working principle of the first connecting member 2 in the above embodiment is as follows: during the first half period of the earthquake, the first support member 22 moves downward under the action of the horizontal displacement of the building in the positive direction, so that the first vertical plate 221 and the second vertical plate 222 press the first lower plate 224 and the second lower plate 225 downward, respectively, so that the first lower plate 224 and the second lower plate 225 gradually become parallel to the horizontal plane. Since the outer sides of the first lower plate 224 and the second lower plate 225 are respectively constrained by the first side plate 211 and the second side plate 212, the first vertical plate 221 and the second vertical plate 222 will be squeezed inwardly to the first plug plate 213. The friction between the plates due to the squeezing provides frictional damping for the building.

[0035] When the positive displacement of the building continues to occur, in order to prevent the first vertical plate 221 and the second vertical plate 222 from continuing to squeeze the first plug plate 213, in the embodiment of the present application, a first tooth surface 214 is arranged on the inner wall of the first side plate 211 and the second side plate 212, respectively. The plurality of teeth arranged in the first tooth surface 214 can make the first lower plate 224 and the second lower plate 225 slide into the tooth groove of the next level of teeth if the first support member 22 continues to displace after reaching the squeezing limit state, and then continue to provide frictional damping for the building. With the continuous increase of displacement, the squeezing of the first vertical plate 221 and the second vertical plate 222 to the first plug plate 213 reaches the squeezing limit again, and then enters the next level, and so on, until the building reaches the maximum displacement of the current period and starts to move in the reverse direction. Such an arrangement structure can better adapt to earthquakes of different intensities.

[0036] It needs to be explained that because the first support member 22 located at the top of the wallboard 1 can still continue to displace after the first vertical plate 221 and the second vertical plate 222 generate squeezing force to the first plug plate 213, and the first lower plate 224 and the second lower plate 225 reach the horizontal position at the first tooth of the first tooth surface 214, the squeezing force reaches the limit value, that is, the frictional damping provided is constant in the middle and late stages of the earthquake. This will not increase the structural stiffness, nor will it increase the seismic force of the structure, but only provide the frictional damping effect of absorbing seismic energy.

[0037] As Figures 5-7As shown in the drawings, in a specific embodiment, the second support groove 31 comprises a third side plate 311, a fourth side plate 312 and a second insert plate 313, the third side plate 311 is arranged spaced apart from the fourth side plate 312, and the second insert plate 313 is located between the third side plate 311 and the fourth side plate 312; the second support 32 comprises a third vertical plate 321 and a fourth vertical plate 322 arranged spaced apart, and the third vertical plate 321 and the fourth vertical plate 322 have a second insert groove 323 therebetween, and the width of the second insert groove 323 is slightly greater than the thickness of the second insert plate 313, and the lower ends of the third vertical plate 321 and the fourth vertical plate 322 are respectively provided with a third lower plate 324 and a fourth lower plate 325; the second support groove 31 and the second support 32 have a third connection state, in the third connection state, the second insert plate 313 is partially inserted into the second insert groove 323, the third lower plate 324 abuts against the inner wall of the third side plate 311, the fourth lower plate 325 abuts against the inner wall of the fourth side plate 312, and the included angles between the third vertical plate 321 and the third lower plate 324 and between the fourth vertical plate 322 and the fourth lower plate 325 are both acute angles.

[0038] As shown in the drawings, Figures 5-7 In a specific embodiment, the inner walls of the third side plate 311 and the fourth side plate 312 are respectively provided with a second tooth surface 314, the second tooth surface 314 comprises a plurality of teeth arranged in steps from one side of the second support groove 31 to the other side of the second support 32, and the upper ends of the third side plate 311 and the fourth side plate 312 are respectively provided with a second limiting stop 315.

[0039] As shown in the drawings, Figures 5-7 In a specific embodiment, the second support groove 31 and the second support 32 have a fourth connection state, when an external force causes the upper floor beam plate 4 to relatively move away from the wall plate 1, the second support groove 31 and the second support 32 move in opposite directions and change from the third connection state to the fourth connection state; in the fourth connection state, the third vertical plate 321 and the fourth vertical plate 322 move upward to generate a reaction force on the third lower plate 324 and the fourth lower plate 325 respectively, so that the third vertical plate 321 and the fourth vertical plate 322 respectively press the second insert plate 313 and generate frictional damping from the surface friction coefficients of the three, in the fourth connection state, the included angles between the third vertical plate 321 and the third lower plate 324 and between the fourth vertical plate 322 and the fourth lower plate 325 are right angles or obtuse angles.

[0040] As shown in the drawings, Figures 5-7As shown, in a specific embodiment, the second support groove 31 further comprises a third connecting plate 316 located at the bottom side of the second plug plate 313, and a second support reinforcing rib 317 is arranged between the outer side wall of the third side plate 311 and the fourth side plate 312 and the third connecting plate 316, respectively, and the second support groove 31 is connected with the wallboard 1 through the third connecting plate 316; the second support member 32 further comprises a fourth connecting plate 326 located at the top side of the third vertical plate 321, and the second support member 32 is connected with the upper floor beam plate 4 through the fourth connecting plate 326.

[0041] When the earthquake is in the second half cycle, it makes the building move in the opposite direction, and due to the structural arrangement of the first lower plate 224 and the second lower plate 225 and the arrangement of the first tooth surface 214, it is determined that the first connecting member 2 no longer has a damping effect, and the B-type connecting member (i.e. the second connecting member 3) is needed to provide frictional damping in the second half cycle of the earthquake. The main difference between the second connecting member 3 and the first connecting member 2 lies in the structure of the tooth surface and the structure of the second support member 32, which determines that the second connecting member 3 can generate frictional damping in the second half cycle of the earthquake, and it will not generate damping effect in the first half cycle of the earthquake. Since the working principle of the second connecting member 3 is similar to that of the first connecting member 2, but the direction is opposite, therefore, the principle of the second connecting member 3 will not be described again.

[0042] The overall working principle of the prefabricated building wallboard connecting member provided in the present application is:

[0043] Under the action of the earthquake, the vibration wave will cause the first support member 22 in the first connecting member 2 to slide relative to the first support groove 21 in the horizontal direction and move relative to the vertical direction; at the same time, it will also cause the second support member 32 in the second connecting member 3 to slide relative to the second support groove 31 in the horizontal direction and move relative to the vertical direction. Specifically, there are two cases:

[0044] 1) For the first connecting member 2, when the prefabricated wall panel 1 slides upward along with the first support groove 21 and the first support 22 relative to the upper beam panel, the first connecting member 2 is squeezed at the lower end of the first vertical plate 221 and the second vertical plate 222 towards the first insertion plate 213, so that the first insertion plate 213 is squeezed, and the frictional force is generated by the friction coefficient of the metal surface, thereby forming a frictional damping. When the first lower plate 224 and the second lower plate 225 become horizontal, the earthquake causes the first support groove 21 and the first support 22 to continue to move upward, at which time the end of the first lower plate 224 and the second lower plate 225 slides off the original tooth surface position to the next tooth surface, still squeezing the first insertion plate 213, thereby always playing a damping role. In this process, because the arrangement direction of the second tooth surface 314 of the second connecting member 3 is opposite to that of the first tooth surface 214, and the angle of the third lower plate 324 and the fourth lower plate 325 of the second connecting member 3 is opposite to that of the first lower plate 224 and the second lower plate 225 of the first connecting member 2, the third lower plate 324 and the fourth lower plate 325 of the second connecting member 3 are deformed upward in this process, and the squeezing deformation of the third vertical plate 321 and the fourth vertical plate 322 is small, so there is no obvious frictional damping between them, that is, the second connecting member 3 does not play an obvious damping role.

[0045] 2) After the first stage, due to the reciprocating motion of the earthquake, when the first support 22 and the first support groove 21 of the first connecting member 2 move to the limit position and then move upward (away from each other), and the second support 32 of the second connecting member 3 slides relative to the second support groove 31 to the limit position and then moves upward, the first lower plate 224 and the second lower plate 225 of the first connecting member 2 are deformed downward, and the squeezing deformation of the first vertical plate 221 and the second vertical plate 222 is small, so there is no obvious frictional damping between them, that is, the first connecting member 2 does not play an obvious damping role in this process. When the second support 32 of the second connecting member 3 moves upward, a damping effect is generated, and the inclined angle of the second tooth surface 314 and the third lower plate 324 and the fourth lower plate 325 cooperates to make the angle between the third lower plate 324 and the third vertical plate 321, and the fourth lower plate 325 and the fourth vertical plate 322 change from an acute angle to a right angle or an obtuse angle, and then slide off the original tooth surface to the adjacent tooth surface, so that the squeezing force of the third vertical plate 321 and the fourth vertical plate 322 on the second insertion plate 313 tends to be constant, thereby forming a non-stiffness damping effect.

[0046] It should be noted that the height of the first tooth surface 214 and the second tooth surface 314, the height of the first vertical plate 221, the second vertical plate 222, the third vertical plate 321, the fourth vertical plate 322, the first insertion plate 213 and the second insertion plate 313 in the first connecting piece 2 and the second connecting piece 3 determine the damping stroke of the first connecting piece 2 and the second connecting piece 3. Such damping stroke should be preset to be sufficient to accommodate the vertical relative displacement of the upper floor and the lower floor in the rare earthquake. The damping stroke can be preset according to the earthquake level in the local area in recent decades, and the specific limitation is not made herein.

[0047] As shown in Figure 1 The second aspect of the embodiments of the present application provides a prefabricated building wallboard. The prefabricated building wallboard comprises a wallboard 1, an upper floor beam plate 4 and a connecting piece. The connecting piece is used to connect the wallboard 1 and the upper floor beam plate 4, and the connecting piece is the energy-dissipating prefabricated building wallboard connecting piece provided in the first aspect. Since the energy-dissipating prefabricated building wallboard connecting piece provided in the first aspect can play the role of a damper, as a building energy dissipation device in an earthquake, the cost of separately setting a damper for the building structure is saved. Therefore, the building using the prefabricated building wallboard has a lower construction cost compared with the building separately setting a damper energy dissipation device.

[0048] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A prefabricated building wall panel connector capable of dissipating energy, characterized in that, The system includes multiple first connectors (2) and multiple second connectors (3), which are respectively disposed on the top of the wall panel (1) and used to connect the wall panel (1) and the upper floor beam slab (4). The first connector (2) includes a first support groove (21) and a first support member (22), which is inserted into the first support groove (21). The first connector (2) is configured such that when the upper floor beam slab (4) and the wall panel (1) are relatively close, the first support groove (21) and the first support member (22) are engaged. The first connecting member (22) slides and generates frictional damping; the second connecting member (3) includes a second support groove (31) and a second support member (32), the second support member (32) is inserted into the second support groove (31), and the second connecting member (3) is configured to slide and generate frictional damping between the second support groove (31) and the second support member (32) when the upper floor beam (4) and the wall panel (1) are relatively far apart; the directions in which the first connecting member (2) and the second connecting member (3) generate frictional damping include the vertical direction and the horizontal direction.

2. The prefabricated building wall panel connector capable of dissipating energy according to claim 1, characterized in that, The first support groove (21) includes a first side plate (211), a second side plate (212) and a first insert plate (213). The first side plate (211) and the second side plate (212) are arranged at intervals, and the first insert plate (213) is located between the first side plate (211) and the second side plate (212). The first support member (22) includes a first vertical plate (221) and a second vertical plate (222) arranged at intervals. A first slot (223) is provided between the first vertical plate (221) and the second vertical plate (222), and the width of the first slot (223) is slightly greater than the thickness of the first insert plate (213). The lower ends of the first vertical plate (221) and the second vertical plate (222) are respectively provided with a first lower plate (224) and a second lower plate (225). The first support groove (21) and the first support member (22) have a first connection state. In the first connection state, the first insert plate (213) is partially inserted into the first slot (223), the first lower plate (224) abuts against the inner wall of the first side plate (211), the second lower plate (225) abuts against the inner wall of the second side plate (212), and the included angles between the first vertical plate (221) and the first lower plate (224) and between the second vertical plate (222) and the second lower plate (225) are all obtuse angles.

3. The energy-dissipating prefabricated building wall panel connector according to claim 2, characterized in that, The inner walls of the first side plate (211) and the second side plate (212) are respectively provided with a first tooth surface (214). The first tooth surface (214) includes a plurality of teeth arranged in a stepped manner from the first support member (22) to the first support groove (21). The upper ends of the first side plate (211) and the second side plate (212) are respectively provided with a first limiting stop (215).

4. The energy-dissipating prefabricated building wall panel connector according to claim 2 or 3, characterized in that, The first support groove (21) and the first support member (22) have a second connection state. When the external force causes the upper floor beam (4) to move closer to the wall panel (1), the first support groove (21) and the first support member (22) move towards each other and change from the first connection state to the second connection state. In the second connection state, the first vertical plate (221) and the second vertical plate (222) press down, causing the first side plate (211) and the second side plate (212) to generate reaction forces on the first lower plate (224) and the second lower plate (225) respectively, so that the first vertical plate (221) and the second vertical plate (222) squeeze the first insert plate (213) respectively and generate frictional damping by the surface friction coefficient of the three. In the second connection state, the included angle between the first vertical plate (221) and the first lower plate (224) and between the second vertical plate (222) and the second lower plate (225) is a right angle or an acute angle.

5. The energy-dissipating prefabricated building wall panel connector according to claim 2, characterized in that, The first support groove (21) further includes a first connecting plate (216), which is located on the bottom side of the first insert plate (213). The outer side walls of the first side plate (211) and the second side plate (212) are respectively provided with first supporting reinforcing ribs (217) between them and the first connecting plate (216). The first support groove (21) is connected to the wall panel (1) through the first connecting plate (216). The first support member (22) further includes a second connecting plate (226), which is located on the top side of the first vertical plate (221). The first support member (22) is connected to the upper floor beam plate (4) through the second connecting plate (226).

6. The prefabricated building wall panel connector capable of dissipating energy according to any one of claims 1-3 or 5, characterized in that, The second support groove (31) includes a third side plate (311), a fourth side plate (312), and a second insert plate (313). The third side plate (311) and the fourth side plate (312) are arranged at intervals, and the second insert plate (313) is located between the third side plate (311) and the fourth side plate (312). The second support member (32) includes a third vertical plate (321) and a fourth vertical plate (322) arranged at intervals. A second slot (323) is provided between the third vertical plate (321) and the fourth vertical plate (322), and the width of the second slot (323) is slightly greater than the thickness of the second insert plate (313). The lower ends of the third vertical plate (321) and the fourth vertical plate (322) are respectively provided with a third lower plate (324) and a fourth lower plate (325). The second support groove (31) and the second support member (32) have a third connection state. In the third connection state, the second insert plate (313) is partially inserted into the second slot (323), the third lower plate (324) abuts against the inner wall of the third side plate (311), the fourth lower plate (325) abuts against the inner wall of the fourth side plate (312), and the included angles between the third vertical plate (321) and the third lower plate (324) and between the fourth vertical plate (322) and the fourth lower plate (325) are all acute angles.

7. The energy-dissipating prefabricated building wall panel connector according to claim 6, characterized in that, The inner walls of the third side plate (311) and the fourth side plate (312) are respectively provided with a second tooth surface (314). The second tooth surface (314) includes a plurality of teeth arranged in a stepped manner from the second support groove (31) side to the second support member (32) side. The upper ends of the third side plate (311) and the fourth side plate (312) are respectively provided with a second limiting bar (315).

8. The prefabricated building wall panel connector capable of dissipating energy according to claim 7, characterized in that, The second support groove (31) and the second support member (32) have a fourth connection state. When the external force causes the upper floor beam (4) to move away from the wall panel (1), the second support groove (31) and the second support member (32) move in opposite directions and change from the third connection state to the fourth connection state. In the fourth connection state, the upward movement of the third vertical plate (321) and the fourth vertical plate (322) causes the third side plate (311) and the fourth side plate (312) to generate reaction forces on the third lower plate (324) and the fourth lower plate (325) respectively, causing the third vertical plate (321) and the fourth vertical plate (322) to press the second insert plate (313) respectively, and frictional damping is generated by the surface friction coefficient of the three. In the fourth connection state, the included angles between the third vertical plate (321) and the third lower plate (324) and between the fourth vertical plate (322) and the fourth lower plate (325) are right angles or obtuse angles.

9. The energy-dissipating prefabricated building wall panel connector according to claim 7, characterized in that, The second support groove (31) also includes a third connecting plate (316), which is located on the bottom side of the second insert plate (313). The outer side walls of the third side plate (311) and the fourth side plate (312) are respectively provided with second support reinforcing ribs (317) between them and the third connecting plate (316). The second support groove (31) is connected to the wall panel (1) through the third connecting plate (316). The second support member (32) also includes a fourth connecting plate (326), which is located on the top side of the third vertical plate (321). The second support member (32) is connected to the upper floor beam plate (4) through the fourth connecting plate (326).

10. A precast building wall panel, comprising a wall panel (1), an upper floor beam slab (4), and a connector, said connector being used to connect the wall panel (1) and the upper floor beam slab (4), characterized in that, The connector is any one of the prefabricated building wall panel connectors capable of energy dissipation as described in claims 1-9.

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