CN210395639U - Prefabricated prestressed concrete frame node capable of amplifying multi-stage energy consumption of corner - Google Patents
Prefabricated prestressed concrete frame node capable of amplifying multi-stage energy consumption of corner Download PDFInfo
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- CN210395639U CN210395639U CN201920857366.9U CN201920857366U CN210395639U CN 210395639 U CN210395639 U CN 210395639U CN 201920857366 U CN201920857366 U CN 201920857366U CN 210395639 U CN210395639 U CN 210395639U
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Abstract
The utility model belongs to the technical field of civil engineering assembled structure, a enlarge prefabricated prestressed concrete frame node of multistage power consumption of corner is disclosed, including prefabricated reinforced concrete post, prefabricated reinforced concrete roof beam, enlarge corner type node shear damper and fix it fixed plate and high strength bolt on the post, beam-ends slider and on power consumption dog and set screw, prestressed steel strand wires reserve the pore and wherein unbonded prestressed steel strand wires. The utility model discloses can effectively consume energy under the earthquake action of strong/typhoon and different intensity to guarantee the stability and the power consumption ability of node under the high-intensity earthquake, thereby reduce the main part component damage, eliminate and shake the back residual deformation, guarantee good from the reset function.
Description
Technical Field
The utility model relates to an enlarge multistage power consumption's of corner prefabricated prestressed concrete frame node belongs to civil engineering assembled structure technical field.
Background
The prefabricated frame structure is formed by using prefabricated beams and columns produced in factories as main stress components and reliably connecting and assembling the prefabricated beams and columns on a construction site. The method has the advantages of quick construction, high quality, high efficiency, energy conservation, environmental protection and the like, is beneficial to realizing green construction and developing building industrialization, and is one of important directions for building structure development in China. However, the assembly type of China at present mainly adopts an equivalent cast-in-place structure, and the prefabricated beam column is cast in place at a node, so that the seismic performance such as structural strength, rigidity and the like can reach or exceed that of the cast-in-place structure. The structure node has complex connection form and great grouting difficulty, needs field wet operation and cannot fully exert the advantages of an assembly structure. In addition, similar to a cast-in-place structure, the structure dissipates the seismic energy by means of the plastic deformation of the members, and although the safety of the main body structure can be guaranteed, structural damage and residual deformation which are difficult to repair can be generated after an earthquake, so that great economic loss is caused.
The precast prestressed concrete frame adopts unbonded prestressed steel strands to pre-press the precast beams and columns together, thereby providing structural resistance. The structure does not aim at the same anti-seismic performance of a cast-in-place structure, but releases the restraint among prefabricated components and realizes nonlinear reaction through the opening of a contact surface. Not only can avoid wet connection, guarantee the advantage of assembled structure, can also avoid the formation of plasticity hinge, reduce structural damage greatly. In addition, because the prestressed steel strand is always in the elastic range, the residual deformation can be eliminated after the earthquake, and the self-resetting function is realized. The structure needs additional energy dissipation devices, and at present, metal yielding energy dissipators, friction energy dissipators, viscoelastic energy dissipators and the like are commonly used. However, the general energy dissipation element can achieve the energy dissipation effect only when the structure generates large relative deformation, and is difficult to play a role under the condition of small structural deformation, so that the energy dissipation efficiency is low. In addition, the rigidity of the structure is obviously reduced after the node is opened, and the structure can generate larger seismic reaction under the action of strong shock, so that the problems of performance degradation of the damper, insufficient energy consumption capability, serious damage to beam-column contact surfaces and non-structural members and the like can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a construction is convenient, can effectively consume energy under the earthquake action of strong/typhoon and different intensity to guarantee stability and power consumption ability under the high-intensity earthquake, thereby reduce the main part component damage, eliminate and shake back residual deformation, guarantee good prefabricated prestressed concrete frame node from the reset function, the technical problem of above-mentioned assembled structure can be solved to this node.
The technical scheme of the utility model:
a prefabricated prestressed concrete frame node for amplifying corner multistage energy consumption comprises a prefabricated reinforced concrete column, a prefabricated reinforced concrete beam, an amplifying corner type node shear damper (hereinafter referred to as damper for short), a fixing plate and a high-strength bolt which are used for fixing the amplifying corner type node shear damper on the column, a beam end sliding device, an energy consumption stop block and a fixing screw which are arranged on the beam end sliding device, a prestressed steel strand reserved hole and unbonded prestressed steel strands in the prestressed steel strand reserved hole; the prefabricated reinforced concrete beam is longitudinally provided with a prestressed steel strand reserved hole, the prefabricated reinforced concrete column is provided with a through prestressed steel strand hole at the position corresponding to the prestressed steel strand reserved hole of the prefabricated reinforced concrete beam, the unbonded prestressed steel strand penetrates through the holes in the prefabricated reinforced concrete beam and the prefabricated reinforced concrete column, and the prefabricated reinforced concrete beam and the prefabricated reinforced concrete column are pre-pressed together; the beam end sliding device is a metal cavity with an opening at one end, and the opening faces towards the side of the prefabricated reinforced concrete column and is fixed at the end part of the prefabricated reinforced concrete beam; the two bottom plates of the damper form a 90-degree angle and are connected through a rotating shaft, one bottom plate is inserted into the beam end sliding device, and the other bottom plate is fixed on the column through a fixing plate and a high-strength bolt; the energy consumption stop block is fixed on the beam end sliding device through a fixing screw.
The damper mainly comprises a rotating shaft, two mutually vertical bottom plates connected with the rotating shaft, a bent plate with one side connected with one bottom plate being in a sawtooth shape, a gear meshed with the sawtooth of the bent plate, a bearing and a turntable connected with the gear, four supporting steel plates connected with the other bottom plate, and energy-consuming materials adhered between the supporting steel plates and the turntable; the bottom plate connected with the support steel plate is provided with bolt holes, and the width of the bottom plate connected with the bent plate is consistent with that of the cavity of the beam-end sliding device.
The three side surfaces of the beam end sliding device are surrounded by side plates, and a bottom plate, a damper sliding cavity, a restraint plate and an energy consumption plate are sequentially arranged from bottom to top. The bottom surface of the bottom plate is welded with anchoring steel bars which are pre-embedded in the precast reinforced concrete beam, the top surface of the bottom plate and the bottom surface of the restraint plate are adhered with lubricating materials, so that the bottom plate of the damper can freely slide in the cavity, gaps with certain widths are reserved on the restraint plate and the energy consumption plate along the longitudinal central line, the width of the gap of the restraint plate is larger than that of the energy consumption plate, and a fixing screw reserved hole is formed in the edge of the energy consumption plate at the gap;
the fixed plate and the bottom plate connected with the support steel plate on the damper are the same in size, bolt holes are arranged at corresponding positions and are respectively placed on two opposite vertical surfaces of the prefabricated reinforced concrete column, a damper fixing bolt reserved hole channel is arranged at the corresponding position of the prefabricated reinforced concrete column, a high-strength bolt penetrates through the damper bottom plate, the prefabricated reinforced concrete column and the fixed plate and is fixed together, and the length of the high-strength bolt is greater than the width of the prefabricated reinforced concrete column;
and the bottom plate connected with the curved plate on the damper is inserted into the cavity of the beam end sliding device, so that the curved plate of the damper passes through the gap at the central line of the restraint plate and the energy dissipation plate. When the beam column rotates relatively, the bottom plate and the restraint plate of the beam end sliding device drive the damper to connect with the bottom plate of the curved plate to rotate, so that the curved plate drives the gear meshed with the curved plate to rotate, the gear drives the turntable connected with the gear to rotate, and the turntable is fixed on the beam columnThe supporting steel plates on the other bottom plate rotate relatively to drive the energy-consuming materials stuck between the supporting steel plates to shear and deform. Because the radius R of the outer ring of the sawtooth edge of the curved plate is far larger than the radius R of the gear, the rotating angle of the turntable is the actual corner of the beam end
The shearing deformation of the energy-consuming material is correspondingly amplified, so that the damper can be started under a smaller node corner, the energy-consuming capability of the viscoelastic material is fully exerted, and the energy-consuming efficiency is greatly improved;
the energy dissipation stop block is an I-shaped metal block, the depth of a groove of the energy dissipation stop block is equal to the thickness of an energy dissipation plate in the beam end sliding device, the edges of an upper flange and a lower flange are provided with preformed holes corresponding to the preformed holes of the fixing screws of the energy dissipation plate, and after the damper is inserted into the beam end sliding device, the two sides of the damper bent plate along the beam length direction are inserted into gaps of the energy dissipation plate of the beam end sliding device and are fixed on the energy dissipation plate through the fixing screws;
the damper is fixed on the column and can slide in a reciprocating manner in the beam end sliding device when the node rotates; the energy consumption stop blocks are connected with the energy consumption plates of the beam end sliding device at proper distances from the energy consumption stop blocks in the sliding direction of the damper curved plates, and the damper curved plates are arranged between the two energy consumption stop blocks; under a smaller node corner, a bent plate of the damper cannot touch the energy consumption stop block, node energy consumption is only provided by the damper, and under a larger node corner, due to a corner amplification mechanism of the damper, energy consumption materials in the damper can generate larger shearing deformation, so that performance degradation is caused, and the energy consumption effect is influenced. At the moment, the damper bent plate is in contact with the energy consumption stop block to drive the energy consumption stop block to move together, and the energy consumption stop block drives the energy consumption plate connected with the energy consumption stop block to shear and deform, so that the second energy consumption mechanism is started, necessary node rigidity and energy consumption capacity are provided, and the node stability is ensured.
The utility model has the advantages that:
(1) due to the pre-pressing effect of the pre-stressed steel strands, under the normal use and small load, the beam column is in complete contact, and the mechanical property of the node is the same as that of the fixed node; under the action of a large load, the pre-pressure of the edge of the section of the beam end is eliminated, the prefabricated reinforced concrete beams and columns are separated from each other, and plastic deformation is concentrated at the opening position of the node, so that the formation of a plastic hinge is avoided, and the damage to a structural member is reduced. Due to the linear elastic behavior of the prestressed steel strands, the opening angle between the unloaded beam columns is closed, so that the residual deformation of the node is eliminated, and the self-resetting function is realized.
(2) The pressure of the prestressed steel strands generates large friction force on the contact surface of the prefabricated reinforced concrete beam column, so that the shearing force of the beam end is resisted, and in addition, the bottom plate and the restraint plate of the beam end sliding device restrain the vertical displacement of the bottom plate of the damper, so that the shearing resistance of the node is further improved.
(3) Because the prefabricated reinforced concrete beam column and the prestressed steel strand do not enter the plasticity, the energy consumption capability of the node is completely provided by the additional energy consumption device, however, the existing damper needs to be started under larger deformation, and the energy consumption effect is difficult to achieve in time.
(4) Under the action of strong shock, the node corner is large, the performance of the energy consumption material is degraded, necessary rigidity and energy consumption capability are difficult to provide, and large structural reaction and main body member damage are caused. In the technical scheme, the bent plate of the damper can touch the energy consumption stop dog under the large corner, so that the energy consumption plate of the beam end sliding device is driven to deform, the energy consumption plate and the damper are stressed together, the node rigidity is improved, in addition, the energy consumption plate is subjected to in-plane shearing deformation, a second energy consumption mechanism of the node is started, the node energy consumption is further increased, the node damage under the strong earthquake is reduced, and the stability of the node is ensured.
(5) The prefabricated reinforced concrete beam column component, the damper and the beam end sliding device are all prefabricated by a factory and transported to a construction site for assembly, and dry operation is adopted in the whole process, so that on-site wet operation is avoided, the component quality can be ensured, the construction efficiency can be improved, and the construction period and the construction cost can be effectively controlled.
Drawings
Fig. 1 is a front view of the device of the present invention;
FIG. 2 is a top view of the device of the present invention;
FIG. 3 is a top view of the beam end;
FIG. 4 is a cross-sectional view taken along line 1-1 of FIG. 2;
FIG. 5 is a cross-sectional view taken along line 2-2 of FIG. 2;
FIG. 6(a) is a front perspective view of the beam-end slide;
FIG. 6(b) is a perspective view of the beam-end slide;
FIG. 7 is a schematic view of the bottom plate and side plates, constraining plate, and energy dissipation plate of the beam-end sliding device;
FIG. 8(a) is a top view of the energy dissipating block;
FIG. 8(b) is a front view of the energy dissipating block;
fig. 9(a) is an enlarged front perspective view of a corner damper;
FIG. 9(b) is an enlarged sectional view of a corner damper A-A;
FIG. 10(a) is a front view of a small corner lower node rotation;
FIG. 10(b) is a top view of the small corner lower node rotation;
FIG. 11(a) is a front view of a large corner lower node rotation;
fig. 11(b) is a top view of the large-angle lower node rotation.
In the figure: the concrete energy-saving beam comprises 1 prefabricated reinforced concrete column, 2 prefabricated reinforced concrete beams, 3 beam end sliding devices, 31 bottom plates A, 32 side plates, 33 cavities, 34 restraint plates, 35 energy-consuming plates, 36 lubricating materials, 37 beam anchoring steel bars, 4 amplification corner type node shear dampers, 41 bottom plates B, 42 bottom plates C, 43 rotating shafts, 44 curved plates, 45 supporting steel plates, 46-1 damper gears, 46-2 damper bearings, 47 rotating discs, 48 damper energy-consuming materials, 5 unbonded prestressed steel strands, 6 fixing plates, 7 high-strength bolts and 8 energy-consuming stoppers.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings.
A prefabricated prestressed concrete frame node capable of amplifying multistage energy consumption of a corner comprises a prefabricated reinforced concrete column 1, a prefabricated reinforced concrete beam 2, a beam end sliding device 3, an amplifying corner type node shear damper 4, unbonded prestressed steel strands 5, a fixing plate 6, a high-strength bolt 7 and an energy consumption stop dog 8; the prefabricated reinforced concrete column 1 and the prefabricated reinforced concrete beam 2 are pre-pressed together through the unbonded prestressed steel strands 5 and are perpendicular to each other to form a main body of the prefabricated prestressed concrete frame joint;
the beam end sliding device 3 and the amplified corner type node shear damper 4 form an energy consumption device for prefabricating the prestressed concrete frame node; the beam-end sliding device 3 is a cavity with an opening at one end and surrounded by a side plate 32, a bottom plate A31 and an energy consumption plate 35, the bottom plate A31, a cavity 33, a restraint plate 34 and the energy consumption plate 35 are arranged in the cavity from bottom to top, and a lubricating material 36 is adhered to the upper surface of the bottom plate A31 and the lower surface of the restraint plate 34; gaps with certain width are reserved between the constraint plates 34 and between the energy consumption plates 35 along the longitudinal center line, and the width of the gap between the constraint plates 34 is wider than that of the gap between the energy consumption plates 35; the energy consumption plate 35 is provided with a groove-shaped and honeycomb-shaped opening, and a fixing screw preformed hole of the energy consumption stop block 8 is reserved at the edge of the gap;
the enlarged corner type node shear damper 4 comprises a bottom plate B41 connected with a curved plate through a damper, a bottom plate C42 connected with a supporting steel plate through the damper, a rotating shaft 43, a curved plate 44, four supporting steel plates 45, a damper gear 46-1, a damper bearing 46-2, a rotating disc 47 and energy consumption materials 48, wherein the bottom plate B41 connected with the curved plate through the damper is perpendicular to the bottom plate C42 connected with the supporting steel plates through the rotating shaft 43; the bottom plate B41 of the damper connected to the bent plate is inserted into the cavity 33 of the beam-end slider 3 and slides in the beam-end slider 3 in the beam-length direction; the width of the bottom plate B41 where the damper is connected to the curved plate is the same as the width of the cavity 33 of the beam-end slide 3; a bottom plate C42, which is formed by connecting the damper and the supporting steel plate, is fixed on the prefabricated reinforced concrete column 1; the curved plate 44 is a curved plate with a sawtooth edge, one edge of the curved plate is fixed on a bottom plate B41 connected with the curved plate by the damper, and the sawtooth edge of the curved plate is meshed with the damper gear 46-1; the damper gear 46-1 has both ends thereof connected to the turntable 47 through the damper bearing 46-2 to form a symmetrical structure; the four supporting steel plates 45 are vertically connected to a bottom plate C42 where the damper is connected with the supporting steel plates, every two supporting steel plates 45 are symmetrically positioned at two sides of the turntable 47, and energy dissipation materials 48 are adhered between the supporting steel plates 45 and the turntable 47;
the fixed plate 6 and a bottom plate C42 connected with the damper and the support steel plate have the same size, and bolt holes are arranged at corresponding positions and are fastened on the prefabricated reinforced concrete column 1 through high-strength bolts 7; the energy dissipation stop 8 is an I-shaped steel block, the depth of a groove of the energy dissipation stop is equal to the thickness of an energy dissipation plate 35 in the beam end sliding device 3, fixing bolt holes corresponding to the reserved holes in the energy dissipation plate 35 are reserved at the edges of the upper flange and the lower flange, and the edge of the energy dissipation plate 35 is embedded into the groove between the upper flange and the lower flange of the energy dissipation stop 8 and is fixed.
The bottom plate a31 of the beam end runner 3 carries the anchoring bars 37 to secure the beam end runner 3 to the end of the precast reinforced concrete beam 2.
The fixing plate 6 and the bottom plate C42 with the damper connected with the supporting steel plate are respectively arranged on two opposite vertical surfaces of the prefabricated reinforced concrete column 1, the prefabricated reinforced concrete column 1 is provided with a damper fixing bolt reserved hole channel at the corresponding position of the bolt hole on the two, and the high-strength bolt 7 sequentially penetrates through the bottom plate C42 with the damper connected with the supporting steel plate, the prefabricated reinforced concrete column 1 and the fixing plate 6, so that the three are fixed together.
The energy dissipation stop blocks 8 are fixed on the energy dissipation plate 35 through fixing screws at two sides of the curved plate 44 along the length direction of the beam, and keep a certain distance with the curved plate 44; when the node has a small corner, because the distance is reserved between the energy consumption stop block 8 and the curved plate 44, the bottom plate B41 of the damper connected with the curved plate freely slides in the beam end sliding device 3, and the structural energy consumption is only provided by the enlarged corner type node shear damper 4; when the node has a large corner, the curved plate 44 contacts the energy dissipation stop 8 to drive the energy dissipation plates 35 of the beam end sliding device 3 to deform under stress together, so that additional rigidity and energy dissipation are provided for the node, and the stability of the node is ensured.
As shown in fig. 1 and 2, the utility model discloses a prefabricated prestressed concrete frame node of multistage power consumption of enlarged corner, including prefabricated reinforced concrete post 1 and prefabricated reinforced concrete roof beam 2, unbonded prestressed steel strand wires 5 will be in the same place the pre-compaction of the two, constitute the main part of node, provide structural resistance by unbonded prestressed steel strand wires 5 under the earthquake action to eliminate the residual deformation after the earthquake, thereby realize the self-reset of node; the beam end sliding device 3 and the amplification corner type node shear damper 4 form a node energy consumption device.
As shown in fig. 3-5, the bottom plate a31 of the beam-end sliding device 3 is provided with anchoring bars 37 to be fixed on the end of the precast reinforced concrete beam 2, and the energy dissipation stoppers 8 are fixed on the energy dissipation plates 35 thereof by fixing screws; in the enlarged corner type node shear damper 4, a base plate 41 connected to a bent plate 44 is inserted into a cavity 33 of a beam-end sliding device 3, and a base plate 42 connected to a supporting steel plate 45 is fixed to a prefabricated reinforced concrete column 1 through a fixing plate 6 and a high-strength bolt 7.
The bottom plate B41 of the damper connected with the curved plate is clamped between the bottom plate A31 and the restraining plate 34 of the beam-end sliding device 3, the lubricating material 36 is adhered to the top surface of the bottom plate A31 and the bottom surface of the restraining plate 34, so that the bottom plate B41 of the damper connected with the curved plate can freely slide along the longitudinal direction; the dissipation stops 8 are fixed to the curved plate 44 on both sides in the beam length direction and spaced apart therefrom.
As shown in fig. 6 and 7, the beam-end sliding device 3 is internally provided with a bottom plate a31, a cavity 33, a constraint plate 34 and an energy consumption plate 35 from bottom to top, and the side plates 32 are connected with the steel plates to form a cavity. A gap with a certain width is reserved between the longitudinal center lines of the restraint plate 34 and the energy consumption plate 35, the width of the gap of the restraint plate 34 is wider than that of the energy consumption plate 35, the energy consumption plate 35 is provided with a groove-shaped or honeycomb-shaped opening, and a fixing screw reserved hole of the energy consumption stop block 8 is reserved at the edge of the gap.
As shown in fig. 8, the energy dissipation block 8 is an i-shaped steel block, the depth of the groove is equal to the thickness of the energy dissipation plate 35 of the beam end sliding device, and the fixing bolt holes corresponding to the preformed holes on the energy dissipation plate 35 are formed in the edges of the upper and lower flanges.
As shown in fig. 9, the bottom plate B41 of the damper connected to the curved plate is connected to the curved plate 44, the bottom plate C42 of the damper connected to the support steel plate is connected to the support steel plate 45, when the beam column rotates relatively, the curved plate 44 rotates around the rotation shaft 43 to drive the damper gear 46-1 engaged with the sawtooth thereon to rotate, the damper gear 46-1 drives the connected turntable 47 to rotate through the damper bearing 46-2 thereon, the turntable 47 is sandwiched between the support steel plates 45, and the energy consumption material 48 is adhered between the two, because the outer ring radius of the sawtooth edge of the curved plate 44 is much larger than the radius of the damper gear 46-1, the rotating angle of the turntable 47 is enlarged, so that the actual shear deformation of the energy consumption material 48 is much larger than the deformation of the beam column generated relative to the corner, and the energy consumption efficiency of the damper is improved.
As shown in fig. 10, when the node point has a small corner, the bottom plate B41 of the damper connected to the curved plate slides freely in the beam-end sliding device 3 due to the distance between the energy consumption block 8 and the curved plate 44, and the structural energy consumption is only provided by the damper 4.
As shown in fig. 11, when a large corner of the node occurs, the curved plate 44 contacts the energy dissipation stopper 8, and drives the energy dissipation plates 35 of the beam-end sliding device 3 to deform under stress together, so as to provide additional rigidity and energy dissipation for the node and ensure the stability of the node.
Claims (5)
1. A prefabricated prestressed concrete frame node capable of amplifying multistage energy consumption of a corner is characterized by comprising a prefabricated reinforced concrete column (1), a prefabricated reinforced concrete beam (2), a beam end sliding device (3), an amplifying corner type node shear damper (4), unbonded prestressed steel stranded wires (5), a fixing plate (6), a high-strength bolt (7) and an energy consumption stop dog (8); the prefabricated reinforced concrete column (1) and the prefabricated reinforced concrete beam (2) are pre-pressed together through the unbonded prestressed steel strand (5) and are perpendicular to each other to form a main body of the prefabricated prestressed concrete frame joint;
the beam end sliding device (3) and the amplified corner type node shear damper (4) form an energy consumption device for prefabricating the prestressed concrete frame node; the beam end sliding device (3) is a cavity with an opening at one end and surrounded by a side plate (32), a bottom plate A (31) and an energy consumption plate (35), the bottom plate A (31), a cavity (33), a constraint plate (34) and the energy consumption plate (35) are arranged in the cavity from bottom to top, and lubricating materials (36) are adhered to the upper surface of the bottom plate A (31) and the lower surface of the constraint plate (34); gaps with certain width are reserved between the constraint plates (34) and between the energy consumption plates (35) along the longitudinal center line, and the width of the gap between the constraint plates (34) is wider than that of the gap between the energy consumption plates (35); the energy consumption plate (35) is provided with a groove-shaped and honeycomb-shaped opening, and a fixing screw preformed hole of the energy consumption stop block (8) is reserved at the edge of the gap;
the amplified corner type node shear damper (4) comprises a bottom plate B (41) with a damper connected with a curved plate, a bottom plate C (42) with a damper connected with a supporting steel plate, a rotating shaft (43), a curved plate (44), four supporting steel plates (45), a damper gear (46-1), a damper bearing (46-2), a rotating disc (47) and energy consumption materials (48), wherein the bottom plate B (41) with the damper connected with the curved plate and the bottom plate C (42) with the damper connected with the supporting steel plate are perpendicular to each other and are connected through the rotating shaft (43); a bottom plate B (41) of the damper connected with the bent plate is inserted into a cavity (33) of the beam-end sliding device (3) and slides in the beam-end sliding device (3) along the beam length direction; the width of a bottom plate B (41) of the damper connected with the curved plate is consistent with the width of a cavity (33) of the beam-end sliding device (3); a bottom plate C (42) with the damper connected with the support steel plate is fixed on the prefabricated reinforced concrete column (1); the curved plate (44) is a curved plate with a sawtooth edge, one edge of the curved plate is fixed on a bottom plate B (41) connected with the damper and the curved plate, and the sawtooth edge of the curved plate is meshed with a damper gear (46-1); the two ends of the damper gear (46-1) are connected with the rotating disc (47) through bearings to form a symmetrical structure; four supporting steel plates (45) are vertically connected to a bottom plate C (42) where the damper is connected with the supporting steel plates, every two supporting steel plates (45) are symmetrically positioned at two sides of a turntable (47), and energy dissipation materials (48) are adhered between the supporting steel plates (45) and the turntable (47);
the fixed plate (6) and a bottom plate C (42) connected with the damper and the support steel plate are the same in size, bolt holes are formed in corresponding positions, and the fixed plate and the bottom plate C are fastened on the prefabricated reinforced concrete column (1) through high-strength bolts (7); the energy dissipation stop block (8) is an I-shaped steel block, the depth of a groove of the energy dissipation stop block is equal to the thickness of an energy dissipation plate (35) in the beam end sliding device (3), fixing bolt holes corresponding to the reserved holes in the energy dissipation plate (35) are reserved at the edges of the upper flange and the lower flange, and the edge of the energy dissipation plate (35) is embedded into the groove between the upper flange and the lower flange of the energy dissipation stop block (8) and is fixed.
2. Prefabricated prestressed concrete frame node with enlarged corner multistage energy consumption according to claim 1, characterized in that the beam-end runner (3) bottom plate a (31) is provided with anchoring bars (37) to secure the beam-end runner (3) to the end of the prefabricated reinforced concrete beam (2).
3. The precast prestressed concrete frame node with the enlarged corner multistage energy consumption according to claim 1 or 2, characterized in that the fixing plate (6) and the bottom plate C (42) with the damper connected with the supporting steel plate are respectively placed on two opposite vertical surfaces of the precast reinforced concrete column (1), the precast reinforced concrete column (1) is provided with damper fixing bolt preformed holes at corresponding positions of bolt holes on the two, and the high-strength bolt (7) sequentially penetrates through the bottom plate C (42) with the damper connected with the supporting steel plate, the precast reinforced concrete column (1) and the fixing plate (6) to fix the three together.
4. The precast prestressed concrete frame node with enlarged corner multistage energy consumption according to claim 1 or 2, wherein the energy consumption stoppers (8) are fixed to the energy consumption plates (35) at both sides of the curved plate (44) in the beam length direction by fixing screws and are spaced apart from the curved plate (44); when the node has a small corner, because a distance is reserved between the energy consumption stop block (8) and the curved plate (44), a bottom plate B (41) connected with the curved plate through the damper freely slides in the beam end sliding device (3), and the structural energy consumption is only provided by the enlarged corner type node shearing damper (4); when the node has a large corner, the bent plate (44) is in contact with the energy consumption stop block (8) to drive the energy consumption plates (35) of the beam end sliding device (3) to deform under stress together, so that additional rigidity and energy consumption are provided for the node, and the stability of the node is ensured.
5. The precast prestressed concrete frame node with enlarged corner multistage energy consumption according to claim 3, wherein said energy consumption stoppers (8) are fixed to the energy consumption plates (35) at both sides of the curved plate (44) in the beam length direction by means of fixing screws and are spaced apart from the curved plate (44); when the node has a small corner, because a distance is reserved between the energy consumption stop block (8) and the curved plate (44), a bottom plate B (41) connected with the curved plate through the damper freely slides in the beam end sliding device (3), and the structural energy consumption is only provided by the enlarged corner type node shearing damper (4); when the node has a large corner, the bent plate (44) is in contact with the energy consumption stop block (8) to drive the energy consumption plates (35) of the beam end sliding device (3) to deform under stress together, so that additional rigidity and energy consumption are provided for the node, and the stability of the node is ensured.
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| CN201920857366.9U CN210395639U (en) | 2019-06-06 | 2019-06-06 | Prefabricated prestressed concrete frame node capable of amplifying multi-stage energy consumption of corner |
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| CN201920857366.9U CN210395639U (en) | 2019-06-06 | 2019-06-06 | Prefabricated prestressed concrete frame node capable of amplifying multi-stage energy consumption of corner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206142A (en) * | 2019-06-06 | 2019-09-06 | 大连理工大学 | Amplify the precast prestressed concrete frame node of corner multistage energy consumption |
| CN112411745A (en) * | 2020-11-28 | 2021-02-26 | 安徽一品小院建筑科技有限公司 | Assembled prestressed concrete frame structure antidetonation node |
| CN113863492A (en) * | 2021-09-17 | 2021-12-31 | 哈尔滨工业大学 | Fabricated concrete beam-column self-resetting node based on friction steel plate connection and assembling method |
| CN115853123A (en) * | 2022-10-31 | 2023-03-28 | 合肥工业大学 | Wooden beam column node corner displacement spring damper |
-
2019
- 2019-06-06 CN CN201920857366.9U patent/CN210395639U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206142A (en) * | 2019-06-06 | 2019-09-06 | 大连理工大学 | Amplify the precast prestressed concrete frame node of corner multistage energy consumption |
| CN110206142B (en) * | 2019-06-06 | 2024-02-06 | 大连理工大学 | Prefabricated prestressed concrete frame node for amplifying multi-stage energy consumption of corner |
| CN112411745A (en) * | 2020-11-28 | 2021-02-26 | 安徽一品小院建筑科技有限公司 | Assembled prestressed concrete frame structure antidetonation node |
| CN113863492A (en) * | 2021-09-17 | 2021-12-31 | 哈尔滨工业大学 | Fabricated concrete beam-column self-resetting node based on friction steel plate connection and assembling method |
| CN113863492B (en) * | 2021-09-17 | 2023-04-11 | 哈尔滨工业大学 | Fabricated concrete beam-column self-resetting node based on friction steel plate connection and assembling method |
| CN115853123A (en) * | 2022-10-31 | 2023-03-28 | 合肥工业大学 | Wooden beam column node corner displacement spring damper |
| CN115853123B (en) * | 2022-10-31 | 2024-04-19 | 合肥工业大学 | Wooden beam column node corner displacement spring damper |
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