CN110056233B - Intelligent-adjustment double-control composite damping component - Google Patents
Intelligent-adjustment double-control composite damping component Download PDFInfo
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- CN110056233B CN110056233B CN201910206052.7A CN201910206052A CN110056233B CN 110056233 B CN110056233 B CN 110056233B CN 201910206052 A CN201910206052 A CN 201910206052A CN 110056233 B CN110056233 B CN 110056233B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention discloses an intelligent-adjustment double-control composite damping component, and belongs to the technical field of earthquake resistance, energy dissipation and shock absorption of engineering structures. The method comprises the following steps: the intelligent identification device comprises a steel frame consisting of I-shaped steel on the periphery, two sets of damping devices consisting of a small-displacement energy dissipation device and a large-displacement energy dissipation device arranged in the middle of the steel frame, and an intelligent identification device and an intelligent mediation device which are distributed on the steel frame. The intelligent recognition device and the intelligent mediation device are arranged on the steel frame, the middle of the intelligent recognition device and the intelligent mediation device is composed of a small displacement energy dissipation device and a large displacement energy dissipation device, and the small displacement energy dissipation device and the large displacement energy dissipation device are mutually overlapped through a bearing to form a whole. The invention solves the problem that the traditional damper can not meet different energy consumption requirements of small displacement and large displacement, fully utilizes the high efficiency of the disc viscoelastic damper and the economy of the metal damper, reduces the wind vibration and earthquake response of the building structure together, improves the wind vibration and earthquake resistance of the building, and has the advantages of safety, reliability, high efficiency, better reduction of the vibration response of the structure and the like.
Description
Technical Field
The invention relates to a damper, in particular to an intelligent-adjustment double-control composite damping component, and belongs to the technical field of energy dissipation and shock absorption.
Background
Viscoelastic dampers and metallic dampers are the most commonly used dampers in civil engineering. The viscoelastic damper is suitable for small displacement, can begin to consume energy under small displacement, has good fatigue performance and energy consumption performance, but has large vibration displacement and low vibration frequency of a building under the action of medium or large vibration, so that the viscoelastic part is damaged prematurely under the action of medium or large vibration. The metal damper is suitable for resisting medium or large earthquakes, can dissipate earthquake energy through the yield of the tension and compression mild steel under large displacement, can effectively reduce the damage of a main structural component, but can only provide lateral rigidity for the structure under the action of small displacement, and cannot consume energy.
In order to solve the problem of energy consumption under the action of small displacement, the two dampers can be compounded, so that the viscoelastic damper consumes energy under the action of small displacement, and under large displacement, the viscoelastic damper and the metal damper consume energy together. There is a need for the development of composite dampers that combine the technical advantages of viscoelastic dampers and metal dampers.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an intelligent-adjustment double-control composite damping component which has the technical advantages of a viscoelastic damper and a metal damper, can effectively reduce the vibration response of a structure under the condition of small displacement, and can enable the damper to generate good energy consumption capacity under medium and large earthquakes. Meanwhile, the type of the vibration is accurately judged according to the earthquake excitation frequency and the displacement, the small vibration and the large vibration are intelligently identified, the type of the damper is timely selected, the vibration type-based earthquake-proof device can effectively work, and the vibration response of the structure is better reduced.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an intelligent-mediation double-control composite damping component comprises a steel frame, wherein the periphery of the steel frame is composed of I-shaped steel, two sets of damping devices are formed by a small-displacement energy consumption device and a large-displacement energy consumption device which are arranged in the middle of the steel frame, and an intelligent recognition device and an intelligent mediation device are distributed on the steel frame; the small displacement energy dissipation device comprises a disc viscoelastic damper which plays an energy dissipation role under a small shock and a torsional spring which provides rigidity for the structure; the large-displacement energy dissipation device comprises a disc viscoelastic damper and a metal damper which plays a role in large earthquake, and the metal damper and the disc viscoelastic damper are overlapped into an energy dissipation whole through a bearing with a smooth surface; the intelligent identification device comprises an infrared transmitting device, an infrared receiving device, an infrared distance meter and a signal processor; the intelligent adjusting device comprises a control torsion spring electromagnet and an air bag squeezer arranged on the two-flap limiting lock catch.
The small displacement energy dissipation device comprises a disc viscoelastic damper and a torsion spring; the disc viscoelastic damper comprises an external constraint disc, an internal shearing disc and fan-shaped viscoelastic materials, wherein the internal shearing disc is positioned in the middle, 4 fan-shaped viscoelastic materials are pasted on two sides of the internal shearing disc, two external constraint discs are arranged on the outer sides of the fan-shaped viscoelastic materials on the two sides, and the lower parts of the two external constraint discs are connected with I-shaped steel of a bottom steel frame through welding support frames; holes for mounting bearings are reserved between the external constraint disc and the internal shearing disc, and the external constraint disc and the bearings are fixed in a spot welding mode; an annular torsion spring is arranged in a gap between the built-in shearing disc and the bearing, one end of the torsion spring is welded on the inner side of the external constraint disc, and the other end of the torsion spring is welded with a torsion spring electromagnet and is placed on the surface of the built-in shearing disc; lifting lugs are respectively welded on the upper part and the lower part of the built-in shearing disc, the two lifting lugs are connected with one ends of two chain rods, and the other ends of the two chain rods are hinged on two opposite corners of the steel frame through a support rod end plate and a rivet; under the condition of small displacement, the steel frame slightly vibrates to drive the chain rods at opposite angles to be mutually pulled and pressed, so that the built-in shearing disc rotates around the bearing to shear the fan-shaped viscoelastic material, meanwhile, the torsion spring electromagnet is electrified and adsorbed on the surface of the built-in shearing disc, and the torsion spring provides rigidity for the building structure along with the rotation of the built-in shearing disc.
The metal damper in the large-displacement energy consumption device comprises an energy consumption beam and an I-shaped frame, wherein the energy consumption beam is fixed on two sides of the I-shaped frame; the middle part of the I-shaped frame is welded and fixed with the bearing, lifting lugs are welded in the middle of the energy dissipation beams on the two sides, the lifting lugs are hinged with positioning ends, the positioning ends are connected with the bottom of the rotary steel pipe, the top of the rotary steel pipe is fixedly connected with a threaded rod in a threaded manner, and the tail end of the threaded rod is hinged to two opposite corners of the steel frame through a support rod end plate and a rivet.
The bottom of the rotating steel pipe is provided with a rolling shaft, the upper part of the rolling shaft is provided with a clamping groove, and the top of the rolling shaft is internally provided with a thread with the size corresponding to that of the threaded rod; the threaded rod is inserted into the rotary steel pipe, the roller at the bottom of the rotary steel pipe is embedded into the inner cavity of the positioning end, and the rotary steel pipe and the positioning end can rotate relatively; the side column of the positioning end is connected with two limiting lock catches through thin rods, and springs are arranged between the side column and the limiting lock catches to ensure that the limiting lock catches do not limit the rotation of the rotating steel pipe under the condition of small displacement; the flanges of the two limit lock catches are wrapped by the air bag squeezer.
The square fixing frame is arranged outside the air bag extruder, the two sides of the air bag extruder are respectively provided with an air bag, the two sides of the air bag extruder are provided with steel plates for limiting extension, and a space is reserved in the middle of the air bag extruder; the air of the air bag comes from an air compressor, when the air enters the air bag, the upper side and the lower side of the air bag are limited by steel plates and can only move back and forth, and the two air bags move forwards or backwards in opposite directions to extrude a gap in the middle.
The intelligent identification device comprises an infrared transmitting device arranged on the upper part of the steel frame, an infrared receiving device arranged on the lower part of the steel frame and a signal processor; when vibration occurs, the infrared transmitting device and the infrared receiving device generate relative displacement to cause signal interruption, when the steel frame returns to the original position, signal transmission between the infrared transmitting device and the infrared receiving device is switched on again, the signal processor calculates the vibration frequency according to the signal interruption time, judges whether the vibration frequency belongs to high frequency or low frequency, and sends a corresponding signal to the single chip microcomputer control system; the infrared distance measuring instrument is placed at the upper left corner of the steel frame at an angle of 45 degrees, the distance between opposite corners of the steel frame is measured, the obtained data is transmitted to the single chip microcomputer control system through a communication cable, the torsion spring electromagnet switch is disconnected when the displacement upper limit threshold value set by the single chip microcomputer control system is reached, the air compressor is switched on, the air compressor injects air into the air bag squeezer on the two-piece limiting lock catch through a pipeline, an air bag in the air bag squeezer expands gradually to squeeze a spring under the two-piece limiting lock catch, a buckle in the limiting lock catch is inserted into a clamping groove in the rotating steel pipe, the threaded rod, the rotating steel pipe and the positioning end form an integral stress rod piece, and the displacement energy consumption of the steel frame is transmitted to the beam to.
The working principle of the intelligent-adjustment double-control composite damping component is as follows:
the infrared transmitting device and the infrared receiving device in the intelligent recognition device are used for receiving signals in real time, the steel frame is influenced by vibration to displace, the infrared transmitting device and the infrared receiving device are dislocated, so that the signals of the infrared receiving device are interrupted, the signal processor is used for measuring and calculating the frequency response of the intelligent damping damper according to the signal interruption time, and the frequency response is input into the single chip microcomputer control system; the single chip microcomputer control system calculates the numerical values of the frequency and the displacement and gives corresponding control commands.
The steel frame is influenced by vibration to generate displacement, an infrared distance measuring device in the intelligent identification device monitors the diagonal displacement response of the steel frame in real time, and the frequency response is input into the single chip microcomputer control system; and the single chip microcomputer control system selects the damping module of the intelligent damping frame damper in real time according to the actually measured vibration frequency response and displacement response.
The intelligent-adjustment double-control composite damping member is additionally arranged between columns, between frames and other parts which can generate larger deformation. When the structure deforms due to vibration, the built-in shearing disc and the external constraint disc of the viscoelastic damper generate relative dislocation, the viscoelastic material layer generates shearing deformation to dissipate energy, and the torsion spring arranged between the built-in shearing disc and the bearing can provide rigidity along with relative angular displacement between the built-in shearing disc and the external constraint disc. If the deformation is larger or the frequency is lower, the single chip microcomputer control system sends an instruction to the intelligent mediation device. The torsional spring quits working, the metal damper and the viscoelastic damper work in a cooperative mode, structural vibration of the metal damper is transmitted to the energy dissipation beam through the whole stress rod piece formed by the threaded rod, the rotating steel pipe and the positioning end, the energy dissipation beam is subjected to bending, pulling and pressing movement, the energy dissipation beam is subjected to plastic deformation, large damping force is provided, and meanwhile energy input from the outside is absorbed and consumed. Because the metal damper which is slightly influenced by the temperature is used, the influence degree of the temperature on the single viscoelastic damper is greatly weakened. Therefore, the intelligent-adjustment double-control composite damping component has the advantages of high energy consumption, wind vibration, small vibration and large vibration energy consumption.
Compared with the prior art, the invention has the following advantages:
according to the invention, the intelligent recognition device is adopted to distinguish the vibration condition, the proper damping device is automatically switched according to different vibration environments, the viscoelastic damper starts to work under the action of small displacement to consume energy, and the energy consumption performance and the fatigue performance are good; under the action of large displacement, the viscoelastic damper and the metal damper work simultaneously to dissipate seismic energy together, so that the dissipation capacity of the damper is obviously improved, the composite damper can be ensured to effectively reduce the vibration response of the structure under the condition of small displacement, the composite damper can generate better energy dissipation capacity under the condition of large displacement, meanwhile, under the action of small displacement, the intelligent recognition device and the intelligent mediation device can effectively prevent the metal damper from fatigue damage, and under the action of large displacement, the viscoelastic material is prevented from shearing damage; the composite damping member can play a good role in damping the vibration of the structure under wind vibration, small vibration and medium and large vibration.
Drawings
FIG. 1 is a schematic view of an integrated intelligent-control composite damping member according to the present invention;
FIG. 2 is a schematic view of an energy dissipation device of the intelligent-adjustment double-control composite damping member under a small displacement condition;
FIG. 3 is a schematic view of a mild steel energy dissipation device of the present invention under a large displacement condition;
FIG. 4 shows an integrated combination of an intelligently-tuned dual-control composite damping member positioning end, an air bag extruder, a limiting lock catch, a rotary steel tube and a threaded rod according to the present invention.
FIG. 5 is a schematic view of a rotating steel pipe.
Fig. 6 is a schematic view of the limit lock.
FIG. 7 is a schematic view of a bladder press.
Fig. 8 is a schematic view of a threaded rod.
Figure 9 is a schematic view of a fan-shaped viscoelastic material.
Fig. 10 is a schematic view of a torsion spring.
Fig. 11 is a schematic view of a bearing.
Fig. 12 is a schematic view of the installation position of the torsion spring.
Fig. 13 is a schematic view of an i-shaped frame.
FIG. 14 is a schematic diagram of an intelligent component of the intelligent mediated double control composite damping component.
Fig. 15 is a flow chart of intelligent control of the intelligent-adjustment double-control composite damping member.
The correspondence between reference numerals and names of the respective portions in fig. 1 to 15 is as follows:
1. the device comprises a steel frame 2, an infrared transmitting device 3, a single-chip microcomputer control system 4, a signal processor 5, an infrared receiving device 6, an infrared distance measuring instrument 7, a lifting lug 8, a threaded rod 9, a rotating steel pipe 10, a limiting lock catch 11, a positioning end 12, a spring 13, an air bag squeezer 14, an energy consumption beam 15, an I-shaped frame 16, a chain rod 17, an external constraint disc 18, a supporting frame 19, a fan-shaped viscoelastic material 20, an internal shearing disc 21, a torsion spring 22, a bearing 23, a rivet 24, a supporting rod end plate 25, a torsion spring electromagnet 26, a clamping groove 27, an air compressor 28 and a rolling shaft.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, an intelligent-adjustment double-control composite damping member comprises a steel frame 1, the periphery of which is composed of i-shaped steel, two sets of damping devices, namely a small-displacement energy dissipation device and a large-displacement energy dissipation device, are arranged in the middle of the steel frame 1, and an intelligent identification device and an intelligent adjustment device are distributed on the steel frame 1; the small displacement energy dissipation device comprises a disc viscoelastic damper which plays an energy dissipation role under a small earthquake and a torsion spring 21 which provides rigidity for the structure; the large displacement energy dissipation device comprises a disc viscoelastic damper and a metal damper which plays a role in large earthquake, and the metal damper and the disc viscoelastic damper are overlapped into an energy dissipation whole through a bearing 22 with a smooth surface; the intelligent identification device comprises an infrared transmitting device 2, an infrared receiving device 5, an infrared distance meter 6 and a signal processor 4; the intelligent adjusting device comprises a control torsion spring electromagnet 25 and an air bag squeezer 13 arranged on the two-flap limiting lock catch 10.
As shown in fig. 2, 9, 10, 11 and 12, the small displacement energy consuming device comprises a disc viscoelastic damper and a torsion spring 21; the disc viscoelastic damper comprises an external constraint disc 17, an internal shearing disc 20 and fan-shaped viscoelastic materials 19, wherein the internal shearing disc 20 is positioned in the middle, 4 fan-shaped viscoelastic materials 19 are pasted on two sides of the internal shearing disc 20, two external constraint discs 17 are arranged on the outer sides of the fan-shaped viscoelastic materials 19 on the two sides, and the lower parts of the two external constraint discs 17 are connected with I-shaped steel of a bottom steel frame 1 in a welding mode through supporting frames 18; a hole for installing a bearing 22 is reserved between the external constraint disc 17 and the internal shearing disc 20, and the external constraint disc 17 and the bearing 22 are fixed in a spot welding manner; an annular torsion spring 21 is arranged in a gap between the built-in shearing disc 20 and the bearing 22, one end of the torsion spring 21 is welded on the inner side of the external constraint disc 17, and the other end is welded with a torsion spring electromagnet 25 and is placed on the surface of the built-in shearing disc 20; lifting lugs 7 are respectively welded at the upper part and the lower part of the built-in shearing disc 20, the two lifting lugs 7 are connected with one ends of two chain rods 16, and the other ends of the two chain rods 16 are hinged on two opposite corners of the steel frame 1 through a support rod end plate 24 and a rivet 23; under the condition of small displacement, the steel frame 1 slightly vibrates to drive the diagonal chain rods 16 to be mutually pulled and pressed, so that the built-in shearing disc 20 rotates around the bearing 22 to shear the fan-shaped viscoelastic material 19, meanwhile, the torsion spring electromagnet 25 is electrified and adsorbed on the surface of the built-in shearing disc 20, and the torsion spring 21 provides rigidity for the building structure along with the rotation of the built-in shearing disc 20.
As shown in fig. 3 and 13, the metal damper in the large displacement energy consumption device comprises an energy consumption beam 14 and an i-shaped frame 15, wherein the energy consumption beam 14 is fixed on two sides of the i-shaped frame 15; the middle part of the I-shaped frame 15 is fixedly welded with a bearing 22, lifting lugs 7 are welded in the middle of the energy dissipation beams 14 on the two sides, the lifting lugs 7 are hinged with positioning end heads 11, the positioning end heads 11 are connected with the bottoms of the rotary steel pipes 9, the tops of the rotary steel pipes 9 are fixedly connected with threaded rods 8 in a threaded mode, and the tail ends of the threaded rods 8 are hinged to two opposite corners of the steel frame 1 through support rod end plates 24 and rivets 23. The i-shaped frame 15 is made of high-strength steel.
As shown in fig. 4, 5, 6 and 8, the bottom of the rotary steel tube 9 is provided with a roller 28, the upper part of the roller 28 is provided with a slot 26, and the top is provided with a thread corresponding to the size of the threaded rod 8; the threaded rod 8 is inserted into the rotary steel tube 9, the roller 28 at the bottom of the rotary steel tube 9 is embedded into the inner cavity of the positioning end 11, and the rotary steel tube 9 and the positioning end 11 can rotate relatively; the side column of the positioning end 11 is connected with two halves of limiting lock catches 10 through thin rods, and springs 12 are arranged between the side column and the limiting lock catches 10 for expanding, so that the limiting lock catches 10 are guaranteed not to limit the rotation of the rotary steel pipe 9 under the condition of small displacement; the flanges of the two limit lock catches 10 are wrapped by the air bag squeezer 13.
As shown in fig. 7, a square fixing frame is arranged outside the air bag squeezer 13, two sides of the air bag are respectively provided with an air bag, two sides of the air bag are provided with steel plates for limiting extension, and a space is reserved in the middle of the air bag; the air in the air bag comes from an air compressor 27, when the air enters the air bag, the upper side and the lower side of the air bag are limited by steel plates and can only move back and forth, and the two air bags move forwards or backwards in opposite directions to extrude a gap in the middle.
As shown in fig. 14 and 15, the intelligent recognition device comprises an infrared emitting device 2 placed on the upper part of a steel frame 1, an infrared receiving device 5 placed on the lower part of the steel frame 1 and a signal processor 4; when vibration occurs, the infrared transmitting device 2 and the infrared receiving device 5 generate relative displacement to cause signal interruption, when the steel frame 1 returns to the original position, signal transmission between the infrared transmitting device 2 and the infrared receiving device 5 is switched on again, the signal processor 4 calculates the vibration frequency according to the signal interruption time, judges whether the vibration frequency belongs to high frequency or low frequency, and sends a corresponding signal to the single chip microcomputer control system 3; the infrared distance meter 6 is placed at the upper left corner of the steel frame 1 at an angle of 45 degrees, the distance between opposite corners of the steel frame 1 is measured, the obtained data is transmitted to the single chip microcomputer control system 3 through a communication cable, the torsion spring electromagnet 25 is switched off when reaching an upper displacement limit threshold value set by the single chip microcomputer control system 3, the air compressor 27 is switched on, the air compressor 27 injects air into the air bag squeezer 13 on the two-piece limiting lock catch 10 through a pipeline, an air bag in the air bag squeezer 13 gradually expands to squeeze the spring under the two-piece limiting lock catch 10, so that a buckle in the limiting lock catch 10 is inserted into a clamping groove 26 on the rotary steel pipe 9, the threaded rod 8, the rotary steel pipe 9 and the positioning end 11 form an integral stressed rod, and the steel frame 1 is transmitted to the energy consumption beam 14 to be subjected to tension.
The built-in shearing disc 20 and the external constraint disc 17 in the middle of the disc viscoelastic damper are both made of high-strength steel, and the fan-shaped viscoelastic material 19 cut by the high-pressure water jet cutter is made of high-temperature high-pressure vulcanization. The I-shaped frame 15 is made of high-strength steel, the energy dissipation beam 14 is made of mild steel with low yield force, angle steel is added between the two ends of the energy dissipation beam 14 and the I-shaped frame 15 for welding, and the middle part of the energy dissipation beam 14 is connected with the lifting lug 7 and is also welded with the angle steel.
As shown in fig. 6, the limit lock 10 is made by welding a flange plate and angle steel with a high-strength steel pipe, and welding a steel pipe below the flange plate to prevent the limit lock 10 from deeply sinking into the slot of the rotating steel pipe 9.
As shown in fig. 7, the air bag press 13 is formed by wrapping two air bags in the middle by an outer steel plate and two side steel plates, the two air bags are made of polyester fiber compound, the extending direction of the air bags is limited by wrapping the two air bags by the steel plates, and the two air bags can only be pressed towards each other.
The air compressor 27 may be a positive displacement compressor, i.e., a compressor that increases the pressure of air by directly changing the volume of air. The air compressor 27 is electrified to work, air is conveyed to the air bag squeezer 13 on the limiting lock catch 10 through a pipeline, and air bags in the air bag squeezer 13 are gradually expanded, so that the aim of squeezing the limiting lock catch 10 is fulfilled.
As shown in fig. 11, the bearing 22 is made of a high-strength steel pipe, two external constraint disks 17 and an i-shaped frame 15 are welded on the bearing 22 to form a whole, and the internal shear disk 20 can rotate relative to the bearing 22.
Claims (4)
1. The utility model provides a two accuse composite damping component of intelligence mediation which characterized in that: the damping device comprises a steel frame (1) with the periphery composed of I-shaped steel, two sets of damping devices consisting of a small displacement energy dissipation device and a large displacement energy dissipation device arranged in the middle of the steel frame (1), and an intelligent recognition device and an intelligent mediation device which are distributed on the steel frame (1); the small displacement energy dissipation device comprises a disc viscoelastic damper which plays a role in dissipating energy under small earthquake and a torsion spring (21) which provides rigidity for a building structure; the large-displacement energy dissipation device comprises a disc viscoelastic damper and a metal damper which plays a role in large earthquake, and the metal damper and the disc viscoelastic damper are overlapped into an energy dissipation whole through a bearing (22) with a smooth surface; the intelligent identification device comprises an infrared transmitting device (2), an infrared receiving device (5), an infrared distance meter (6) and a signal processor (4); the intelligent adjusting device comprises a torsion spring electromagnet (25) and an air bag squeezer (13) arranged on the two-flap limiting lock catch (10);
the metal damper in the large-displacement energy consumption device comprises an energy consumption beam (14) and an I-shaped frame (15), wherein the energy consumption beam (14) is fixed on two sides of the I-shaped frame (15); the middle part of an I-shaped frame (15) is fixedly welded with a bearing (22), lifting lugs (7) are welded in the middle of energy dissipation beams (14) on two sides, the lifting lugs (7) are hinged with a positioning end (11), the positioning end (11) is connected with the bottom of a rotary steel pipe (9), the top of the rotary steel pipe (9) is fixedly connected with a threaded rod (8) in a threaded manner, and the tail end of the threaded rod (8) is hinged to two opposite corners of a steel frame (1) through a support rod end plate (24) and rivets (23); the side column of the positioning end (11) is connected with two petals of limiting lock catches (10) through thin rods, and springs (12) are arranged between the side column and the limiting lock catches (10) for unfolding, so that the limiting lock catches (10) can not limit the rotation of the rotating steel pipe (9) under the condition of small displacement; the flanges of the two limit lock catches (10) are wrapped by the air bag squeezer (13);
the small displacement energy consumption device comprises a disc viscoelastic damper and a torsion spring (21); the disc viscoelastic damper comprises an external constraint disc (17), an internal shearing disc (20) and fan-shaped viscoelastic materials (19), wherein the internal shearing disc (20) is positioned in the middle, 4 fan-shaped viscoelastic materials (19) are pasted on two sides of the internal shearing disc, two external constraint discs (17) are arranged on the outer sides of the fan-shaped viscoelastic materials (19) on the two sides, and the lower parts of the two external constraint discs (17) are connected with I-shaped steel of a bottom steel frame (1) through welding supporting frames (18); holes for mounting bearings (22) are reserved between the external constraint disc (17) and the internal shearing disc (20), and the external constraint disc (17) and the bearings (22) are fixed in a spot welding mode; an annular torsion spring (21) is arranged in a gap between the built-in shearing disc (20) and the bearing (22), one end of the torsion spring (21) is welded on the inner side of the external constraint disc (17), and the other end of the torsion spring (21) is welded with a torsion spring electromagnet (25) and is placed on the surface of the built-in shearing disc (20); lifting lugs (7) are respectively welded at the upper part and the lower part of the built-in shearing disc (20), the two lifting lugs (7) are connected with one ends of two chain rods (16), and the other ends of the two chain rods (16) are hinged to two opposite angles of the steel frame (1) through a support rod end plate (24) and a rivet (23); under the condition of small displacement, the steel frame (1) slightly vibrates to drive the diagonal chain rods (16) to be mutually pulled and pressed, so that the built-in shearing disc (20) rotates around the bearing (22) to shear the fan-shaped viscoelastic material (19), meanwhile, the torsion spring electromagnet (25) is electrified and adsorbed on the surface of the built-in shearing disc (20), and the torsion spring (21) provides rigidity for the building structure along with the rotation of the built-in shearing disc (20).
2. The intelligently tuned dual control composite damping element according to claim 1, wherein: a rolling shaft (28) is arranged at the bottom of the rotary steel pipe (9), a clamping groove (26) is arranged at the upper part of the rolling shaft (28), and a thread corresponding to the size of the threaded rod (8) is arranged in the top of the rolling shaft; the threaded rod (8) is inserted into the rotary steel pipe (9), the roller (28) at the bottom of the rotary steel pipe (9) is embedded into the inner cavity of the positioning end (11), and the rotary steel pipe (9) and the positioning end (11) can rotate relatively.
3. The intelligently tuned dual control composite damping member according to claim 2, wherein: a square fixing frame is arranged outside the air bag squeezer (13), two air bags are arranged on two sides of the air bag squeezer respectively, steel plates are arranged on two sides of each air bag to limit extension, and a space is reserved in the middle of each air bag; air in the air bags comes from an air compressor (27), when the air enters the air bags, the upper side and the lower side of the air bags are limited by steel plates and can only move back and forth, and the two air bags move forwards or backwards in opposite directions to extrude a gap in the middle.
4. The intelligently tuned dual control composite damping member according to claim 1, wherein: the intelligent identification device comprises an infrared emitting device (2) arranged on the upper part of the steel frame (1), an infrared receiving device (5) arranged on the lower part of the steel frame (1) and a signal processor (4); when the vibration comes, the infrared transmitting device (2) and the infrared receiving device (5) generate relative displacement to cause signal interruption, when the steel frame (1) returns to the original position, the signal transmission between the infrared transmitting device (2) and the infrared receiving device (5) is switched on again, the signal processor (4) calculates the vibration frequency according to the signal interruption time, judges whether the vibration frequency belongs to high frequency or low frequency, and sends a corresponding signal to the single chip microcomputer control system (3); the infrared distance meter (6) is placed at the upper left corner of the steel frame (1) at an angle of 45 degrees, the distance between opposite corners of the steel frame (1) is measured, the obtained data is transmitted to the single chip microcomputer control system (3) through a communication cable, the torsion spring electromagnet (25) is switched off when reaching an upper limit displacement threshold value set by the single chip microcomputer control system (3), the air compressor (27) is switched on, the air compressor (27) injects air into the air bag squeezer (13) on the two limit latches (10) through a pipeline, air bags in the air bag squeezer (13) expand gradually to squeeze springs under the two limit latches (10), so that the buckles in the limit latches (10) are inserted into the clamping grooves (26) on the rotary steel pipe (9), the threaded rod (8), the rotary steel pipe (9) and the positioning end (11) form an integral stress rod, and the displacement of the steel frame (1) is transmitted to the energy consumption beam (14), so that the tension and compression yield consumes energy.
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|---|---|---|---|---|
| CN111827502B (en) * | 2020-06-04 | 2022-08-19 | 上海大学 | High-efficient energy dissipation shock attenuation engineering structure system |
| CN112343395B (en) * | 2020-11-06 | 2021-11-19 | 北京工业大学 | Self-reset multistage energy consumption device adopting pulley to adjust cable force and threshold triggering control |
| CN112942610B (en) * | 2021-01-29 | 2022-08-23 | 同济大学 | Composite damper based on chiral structure |
| CN113152718A (en) * | 2021-04-14 | 2021-07-23 | 董道卫 | Anti-seismic damping wall for building and mounting structure thereof |
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| JP2002038757A (en) * | 2000-07-21 | 2002-02-06 | Takenaka Komuten Co Ltd | Vibration damping equipment |
| JP2014148859A (en) * | 2013-02-01 | 2014-08-21 | Mitsui Home Co Ltd | Load bearing wall |
| CN204535981U (en) * | 2015-05-04 | 2015-08-05 | 中国直升机设计研究所 | A kind of drum type brake viscoelastic damper performance test apparatus |
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