CN202544161U - Shearing and bending combined phased yielding mild steel damper - Google Patents
Shearing and bending combined phased yielding mild steel damper Download PDFInfo
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- CN202544161U CN202544161U CN2012202078613U CN201220207861U CN202544161U CN 202544161 U CN202544161 U CN 202544161U CN 2012202078613 U CN2012202078613 U CN 2012202078613U CN 201220207861 U CN201220207861 U CN 201220207861U CN 202544161 U CN202544161 U CN 202544161U
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Abstract
The utility model discloses a shearing and bending combined phased yielding mild steel damper. The damper comprises two L-shaped side steel plates (1) which are symmetric about the origin, and two ends of an X-shaped mild steel energy dissipative steel sheet (2) are respectively vertically welded and connected with two X-shaped steel sheet connecting plates (3) arranged in parallel to form an X-shaped steel sheet energy dissipative assembly (7); the rib wall of a rectangular mild steel energy dissipative steel sheet (4) is vertically welded and connected with a rectangular steel sheet stiffening plate (6), and the upper end and the lower end of the rectangular mild steel energy dissipative steel sheet (4) are respectively vertically welded and connected with two rectangular steel sheet connecting plates (5) arranged in parallel to form a rectangular steel sheet energy dissipative assembly (8); and the X-shaped steel sheet energy dissipative assembly (7) and the rectangular steel sheet energy dissipative assembly (8) are arranged side by side in a cavity formed by the L-shaped side steel plates (1) and respectively fixedly connected with the vertical surfaces of the L-shaped side steel plates (1) through high-strength bolts. The damper has the advantages of simple structure, strong energy dissipation capability, good phased energy dissipation effect and wide application range.
Description
Technical field
The utility model relates to civil engineering antidetonation and damping field; Relate in particular to the metal energy-consumption damper in the structure passive energy dissipation control system, a kind of specifically combined mild steel damper of surrendering stage by stage of shear-bow that can additional damping ratio be provided for building structure, reduce structural seismic response.
Background technology
The metal energy-consumption damper is to utilize metal material to get into hysteretic energy after the plastic range.Because metal material such as mild steel, lead, shape memory metal have good ductility and hysteresis ability, thereby be widely used for making various types of dampers.From stress form, can be divided into axial surrender type, shear yielding type, crooked surrender type and torque yield type damper.Using more and representative damper product at present has: X type and triangle damper, shearing-type mild steel damper, torsion beam energy consumer, bent beam energy consumer, the capable steel plate energy consumer of U, rod iron energy consumer, annulus, two annulus energy consumer, the annulus energy consumer etc. of putting more energy into.With respect to other dampers such as oil damper, viscoelastic damper and viscous damping devices; Metal damper have be prone to processing, easy-maintaining change, cheap, energy dissipation capacity is stablized, receive temperature and external environment to influence plurality of advantages such as little, therefore is widely used in the seismic hardening of newly-built concrete structure, steel work or old building.
The present existing damper form that consumes energy mostly is single, the requirement in the time of can't satisfying little shake with big shake simultaneously.Many dampers are only working under big shake, and then in elastic stage, seismic energy is dissipated by agent structure, has caused damage to a certain degree during little shake; Other damper yield displacement is less, and just surrender power consumption also has ductility preferably in the time of can satisfying little shake when shaking greatly; Can reach the requirement of big shake power consumption; But this type damper is often additional bigger to the rigidity of structure, and then causes the increase of geological process, and this is a vicious circle.On the other hand, just get into plastic strain during the little shake of damper, the big shake of experience promptly needs all to change, and economy is relatively poor.And earthquake generally is accompanied by the seismic sequence of principal earthquake, aftershock or crowd's shake, and aftershock takes place after following principal earthquake mostly closely soon, and the aftershock earthquake magnitude is often bigger, and perdurabgility is long, so the damper of research and development multistage power consumption becomes the task of top priority.
Summary of the invention
The purpose of the utility model is to the single shortcoming of existing metal energy-consumption damper ubiquity power consumption level, has proposed a kind of combined mild steel damper of surrendering stage by stage of shear-bow that can realize different yield situations according to the size of seismic energy.
The purpose of the utility model solves through following technical scheme:
The combined mild steel damper of surrendering stage by stage of a kind of shear-bow; Comprise two blocks of L shaped side steel plates, X-shaped mild-steel energy-consumption steel disc, X-shaped steel disc junction plate, rectangle mild-steel energy-consumption steel disc, rectangle steel disc junction plate and rectangle steel disc stiffener; It is characterized in that described two blocks of L shaped side steel plates are initial point and are symmetrical set, the two ends of X-shaped mild-steel energy-consumption steel disc constitute X-shaped steel disc power consumption assembly with two vertical backs that are weldingly connected of the X-shaped steel disc junction plate that laterally arranges respectively; The rib wall of rectangle mild-steel energy-consumption steel disc is vertical with rectangle steel disc stiffener to be weldingly connected and the top and bottom of rectangle mild-steel energy-consumption steel disc constitute rectangle steel discs power consumption assemblies with two vertical backs that are weldingly connected of the rectangle steel disc junction plate that laterally arranges respectively; The vertical plane that X-shaped steel disc power consumption assembly and rectangle steel disc power consumption assembly are arranged side by side in the cavity that L shaped side steel plate constitutes also respectively through high-strength bolt and L shaped side steel plate is fixedly linked.
Described X-shaped steel disc power consumption assembly and rectangle steel disc power consumption assembly are arranged side by side along the horizontal direction of L shaped side steel plate vertical plane.
The X-shaped steel disc junction plate at said X-shaped steel disc power consumption assembly two ends is fixedly linked through the upright side walls of high-strength bolt and L shaped side steel plate.
The rectangle steel disc junction plate at said rectangle steel disc power consumption assembly two ends is fixedly linked through the upright side walls of high-strength bolt and L shaped side steel plate.
Described X-shaped mild-steel energy-consumption steel disc vertically is distributed between two X-shaped steel disc junction plates.
Described X-shaped mild-steel energy-consumption steel disc is a flexure type mild-steel energy-consumption steel disc, and rectangle mild-steel energy-consumption steel disc is a shearing-type mild-steel energy-consumption steel disc; Described X-shaped mild-steel energy-consumption steel disc and rectangle mild-steel energy-consumption steel disc adopt the low-yield steel of yield strength between 100MPa-225MPa to process.
The steel that described L shaped side steel plate, X-shaped steel disc junction plate, rectangle steel disc junction plate and rectangle steel disc stiffener adopt yield strength to be not less than 235MPa are processed.
The horizontal plane of described L shaped side steel plate links to each other with building structure through high-strength bolt.
The utility model is compared prior art has following advantage:
The utility model is assembled into X-shaped steel disc power consumption assembly through the mild-steel energy-consumption steel disc that adopts two kinds of difformities and power consumption mode and rectangle steel disc power consumption assembly is installed in the cavity of L shaped side steel plate formation; Wherein the rectangle mild-steel energy-consumption steel disc yield displacement of shearing-type is little, initial stiffness is big, energy dissipation capacity is strong, and the yield displacement of the X-shaped mild-steel energy-consumption steel disc of flexure type is big, initial stiffness is little, extreme displacement is big; When making little wind or little shake; The very little displacement of rectangle mild-steel energy-consumption steel disc experience promptly gets into the plasticity power consumption, and X-shaped mild-steel energy-consumption steel disc then is in elastic stage, during the big shake of strong wind; X-shaped mild-steel energy-consumption steel disc begins surrender; Consume energy jointly with the rectangle mild-steel energy-consumption steel disc of shearing-type, thus the effect of the power consumption of surrender stage by stage of realization damper, and the big characteristics of X-shaped mild-steel energy-consumption steel disc extreme displacement make damper have stronger safety stock.
The utility model efficiently solves tradition and shears or the single shortcoming of flexure type damper damping level; And simple in structure, low cost of manufacture, be easy to installing and replacing, space occupancy is little, less to the function and the appearance effects of building, and has the energy dissipation capacity characteristics effective, good endurance that consume energy by force, stage by stage.
The utility model is in actual engineering design, and the parameters such as size of quantity, ratio, physical dimension, material and side plate that can be through adjusting two kinds of mild-steel energy-consumption steel discs are produced the damper of mechanical property parameters such as different initial stiffnesses, initial yield displacement, second yield displacement and energy dissipation capacity.
Description of drawings
Accompanying drawing 1 is the damper perspective view of the utility model;
Accompanying drawing 2 is the damper internal placement sketch map of the utility model;
Accompanying drawing 3 is the X-shaped steel disc power consumption modular construction sketch map of the utility model;
Accompanying drawing 4 is the rectangle steel disc power consumption modular construction sketch map of the utility model;
Accompanying drawing 5 is the damper installation structure floor map of the utility model;
Accompanying drawing 6 carries out the hysteresis loop figure that obtains after the key property loading test for the damper of the utility model;
Accompanying drawing 8 carries out the hysteresis loop figure that obtains after the fatigue behaviour loading test for the damper of the utility model;
Accompanying drawing 9 is the sketch map that column type was installed in the middle of the damper of the utility model adopted in building structure;
Accompanying drawing 10 is the sketch map that the damper of the utility model adopts support type to install in building structure.
Wherein: 1-L shaped side steel plate; 2-X-shaped mild-steel energy-consumption steel disc; 3-X-shaped steel disc junction plate; 4-rectangle mild-steel energy-consumption steel disc; 5-rectangle steel disc junction plate; 6-rectangle steel disc stiffener; 7-X-shaped steel disc power consumption assembly; 8-rectangle steel disc power consumption assembly.
The specific embodiment
Shown in Fig. 1-5: the combined mild steel damper of surrendering stage by stage of a kind of shear-bow; Comprise two blocks of L shaped side steel plates 1, X-shaped mild-steel energy-consumption steel disc 2, X-shaped steel disc junction plate 3, rectangle mild-steel energy-consumption steel disc 4, rectangle steel disc junction plate 5 and rectangle steel disc stiffener 6; Wherein two blocks of L shaped side steel plates 1 are initial point and are symmetrical set and constitute a frame construction; The two ends of X-shaped mild-steel energy-consumption steel disc 2 respectively with two X-shaped steel disc junction plate 3 vertical being weldingly connected that laterally arrange, X-shaped mild-steel energy-consumption steel disc 2 vertically is distributed between two X-shaped steel disc junction plates 3 and a plurality of X-shaped mild-steel energy-consumption steel disc 2 and two X-shaped steel disc junction plates 3 constitute an X-shaped steel disc power consumption assembly 7; The rib wall of rectangle mild-steel energy-consumption steel disc 4 and rectangle steel disc stiffener 6 be vertical to be weldingly connected and the top and bottom of rectangle mild-steel energy-consumption steel disc 4 constitute rectangle steel discs power consumption assemblies 8 with two rectangle steel disc junction plates that laterally arrange, the 5 vertical backs that are weldingly connected respectively; Wherein adopt a rectangle mild-steel energy-consumption steel disc 4, two rectangle steel disc stiffeners 6 and two rectangle steel disc junction plates 5 to constitute a rectangle steel disc power consumption assembly 8 usually, but also can use a rectangle mild-steel energy-consumption steel disc 4, a rectangle steel disc stiffener 6 and two rectangle steel disc junction plates 5 to constitute a rectangle steel disc power consumption assembly 8; X-shaped steel disc power consumption assembly 7 and rectangle steel disc power consumption assembly 8 along the horizontal direction of L shaped side steel plate 1 vertical plane be arranged side by side in the cavity that L shaped side steel plate 1 constitutes and respectively the vertical plane through high-strength bolt and L shaped side steel plate 1 be fixedly linked; The upright side walls of X-shaped steel disc junction plate 3 through high-strength bolt and L shaped side steel plate 1 that is X-shaped steel disc power consumption assembly 7 two ends is fixedly linked; The rectangle steel disc junction plate 5 at rectangle steel disc power consumption assembly 8 two ends is fixedly linked through the upright side walls of high-strength bolt and L shaped side steel plate 1, and wherein X-shaped steel disc power consumption assembly 7 can be selected for use according to the actual engineering design needs with the quantity of rectangle steel disc power consumption assembly 8; The horizontal plane of L shaped side steel plate 1 links to each other with building structure through high-strength bolt.
The combined mild steel damper of surrendering stage by stage of the shear-bow of the utility model belongs to the displacement type damper, is to rely on mild steel material to surrender the entering plastic state under external force constantly to absorb energy.For the entering duty that guarantees that damper can be as early as possible; Protect agent structure to a greater degree; The power consumption YIELD STRENGTH is unsuitable too high; And for guaranteeing that damper still can operate as normal under the situation of big displacement, be unlikely to take place ductile fracture or low-cycle fatigue failure, require the power consumption material that bigger ductility will be arranged; So X-shaped mild-steel energy-consumption steel disc 2 and rectangle mild-steel energy-consumption steel disc 4 all adopt the low-yield mild steel material of yield strength between 100MPa-225MPa to process, its physical dimension should require to confirm according to physical dimension in the actual damping scheme and power consumption.X-shaped mild-steel energy-consumption steel disc in the damper 2 adopts flexure type mild-steel energy-consumption steel disc simultaneously, comes consumed energy with flexural deformation form reciprocal outside the plane of steel disc; Rectangle mild-steel energy-consumption steel disc 4 adopts shear energy dissipation shaped steel sheet, comes consumed energy with reciprocal shearing motion in the plane of steel disc.Two kinds of power consumption steel discs all can receive vertical power of steel disc and moment of flexure under the reciprocating motion situation, vertical height changes, and this can weaken the energy dissipation capacity of steel disc greatly; Wherein rectangle steel disc stiffener 6 will be protected the uniformity of rectangle mild-steel energy-consumption steel disc 4 in vertical strain, otherwise rectangle mild-steel energy-consumption steel disc 4 is when big displacement, and stress can appear in both ends to be concentrated, and is unfavorable for power consumption greatly.In addition for guaranteeing that L shaped side steel plate 1, X-shaped steel disc junction plate 3, rectangle steel disc junction plate 5 and rectangle steel disc stiffener 6 keep stable down in big shake, so the steel that all adopt yield strength to be not less than 235MPa process, and have certain thickness.In actual engineering design, the parameters such as size of quantity, ratio, physical dimension, material and side plate that can be through adjusting two kinds of mild-steel energy-consumption steel discs are produced the damper of mechanical property parameters such as different initial stiffnesses, initial yield displacement, second yield displacement and energy dissipation capacity.
Draw the power of this damper and the hysteresis loop and the tired displacement course of displacement relation through basic performance tests and experiment on fatigue properties below, confirm its fatigue life.Test adopts 16 X-shaped mild-steel energy- consumption steel discs 2 and 4, two kinds of steel discs of a rectangle mild-steel energy-consumption steel disc all to adopt the high-performance low-yield mild steel JIS LY225 of Japanese import to make; Other member adopts the Q235 steel to do; Wherein per four X-shaped mild-steel energy-consumption steel discs 2 and two X-shaped steel disc junction plates 3 are formed an X-shaped steel disc power consumption assembly 7; Each rectangle steel disc power consumption assembly 8 is made up of a rectangle mild-steel energy-consumption steel disc 4, two rectangle steel disc junction plates 5 and two rectangle steel disc stiffeners 6, and consume energy assembly 8 and two blocks of L shaped side steel plates 1 of four X-shaped steel disc power consumption assemblies 7 and a rectangle steel disc connect and compose the combined mild steel damper of surrendering stage by stage of shear-bow that a utility model is set forth through bolt then.Wherein the size of each parts is as shown in table 1.
Each part dimension (unit: mm) of table 1 damper
| Classification | Bottom width b | Steel disc height h | Steel plate thickness t | Neck width a |
| L shaped side steel plate | 500 | 900 | 45 | / |
| X-shaped mild-steel energy-consumption steel disc | 120 | 200 | 9 | 30 |
| X-shaped steel disc junction plate | 150 | 320 | 20 | / |
| Rectangle mild-steel energy-consumption steel disc | 80 | 200 | 6 | / |
| Rectangle steel disc junction plate | 120 | 150 | 20 | / |
| Rectangle steel disc stiffener | 76 | 200 | 12 | / |
Because testing equipment is the vertical mode that loads; This test intended adopts vertical Vertical loading mode; Vertically place above-mentioned damper on the charger; The L shaped side steel plate 1 of this damper top and bottom is fixedly linked through bolt and charger respectively, detects the energy-dissipating property of damper with this.
One, key property loading test
This damper is controlled with displacement and to be realized loading procedure in process of the test, and it is as shown in table 2 that concrete test loads system.
Table 2 damper low cycle repetitive load performance test loads system
| Loading sequence | Frequency (Hz) | Displacement (mm) | Back and forth load number of times | Horizontal movement | Load waveform |
| 1 | 0.05 | 0.1 | 2 | Constant | |
| 2 | 0.05 | 0.2 | 2 | Constant | |
| 3 | 0.05 | 0.4 | 2 | Constant | |
| 4 | 0.05 | 0.5 | 2 | Constant | |
| 5 | 0.05 | 0.75 | 2 | Constant | |
| 6 | 0.05 | 1 | 2 | Constant | |
| 7 | 0.05 | 1.25 | 2 | Constant | Triangular wave |
| 8 | 0.05 | 1.5 | 2 | Constant | Triangular wave |
| 9 | 0.05 | 1.75 | 2 | Constant | |
| 10 | 0.05 | 2 | 2 | Constant | Triangular wave |
| 11 | 0.05 | 2.25 | 2 | Constant | Triangular wave |
| 12 | 0.05 | 2.5 | 2 | Constant | Triangular wave |
| 13 | 0.05 | 2.75 | 2 | Constant | Triangular wave |
| 14 | 0.05 | 3 | 2 | Constant | |
| 15 | 0.05 | 4.5 | 2 | Constant | |
| 16 | 0.05 | 6 | 2 | Constant | Triangular wave |
| 17 | 0.05 | 9 | 2 | Constant | |
| 18 | 0.05 | 12 | 2 | Constant | Triangular wave |
| 19 | 0.05 | 18 | 2 | Constant | |
| 20 | 0.05 | 24 | 2 | Constant | Triangular wave |
| 21 | 0.05 | 30 | 2 | Constant | Triangular wave |
The damper key property hysteresis loop that obtains after the above-mentioned test is as shown in Figure 6, can be found out that by Fig. 6 the hysteresis loop of this damper basic performance tests is spindle generally, and shape is full, power consumption is stable.When load deflection was very little, the shearing-type energy-consumption steel disc was surrendered, and began power consumption; Displacement continues to increase, and flexure type X-shaped steel disc begins to get into surrender power consumption state, and final two kinds of mild steel steel discs are all surrendered, the whole power consumption of damper.And the skeleton curve of damper is the tri linear type of standard, and yield phenomenon is very obvious stage by stage, show that the combined mild steel damper of surrendering stage by stage of this shear-bow can well realize consuming energy stage by stage, and energy dissipation capacity is stronger.Concentrated, the big strain generation of stress steel disc distortion destruction crackle all do not appear or in all steel disc necks or root simultaneously, and weld seam is all right, does not see phenomenons such as the sealing-off that ruptures, and damper is in safe state all the time.
In addition the key property of the damper of the utility model is carried out numerical simulation; The hysteresis loop that key property numerical simulation and loading test obtain is as shown in Figure 7; Wherein the grey lines are represented the hysteresis loop that numerical simulation obtains, and black lines is represented the hysteresis loop that loading test obtains.The result of numerical simulation and loading test is contrasted the back discovery, and both hysteresis loops are very approaching, and skeleton curve is the tri linear type, and the restoring force model of having verified this damper is the trilinear model; Wherein first rigidity of the first ratio of rigidity trial curve of numerical simulation curve is big slightly; First yield displacement of promptly testing gained is bigger slightly than numerical simulation, and this is because mild-steel energy-consumption steel disc strain-stress relation that numerical simulation adopts and loading test exist slight error to cause with the wood property of actual mild-steel energy-consumption steel disc; But then the goodness of fit is higher for the parameters such as characteristic point of ultimate load, second rigidity, the 3rd rigidity and surrender stage by stage, explains that this damper can satisfy the practical engineering application demand fully; The strain hardening phenomenon that damper shows during reverse simultaneously the loading is also simulated very precisely, and the energy dissipation capacity of damper (being the area of hysteretic loop) compare error is in 10%.The power consumption effect stage by stage that contrast through key property numerical simulation and loading test can draw this damper equally is obvious, and energy dissipation capacity is stronger.
Two, fatigue behaviour loading test
In fatigue behaviour loading test process; Applying 60 circle design displacement amplitudes for this damper is that 12mm, frequency are the fatigue behaviour of the fixed displacement triangular wave test damper of 0.05 Hz, and the damper key property hysteresis loop that obtains after the above-mentioned test is as shown in Figure 8, can be found out by Fig. 8; After reciprocation cycle under the design displacement amplitude of 12mm loads 60 circles; Obvious bending or shear failure do not take place in the power consumption steel disc of damper, and hysteresis loop is not obviously distortion also, and the hysteretic loop area is that the attenuation of energy dissipation capacity and surrender bearing capacity all is lower than 15%; Displacement course accumulative total reaches 3613mm, and tangible low-cycle fatigue phenomenon does not appear in damper.Show the stable mechanical property of this damper, energy-dissipating property is good, has reached the requirement of earthquake resistant code regulation.
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Embodiment 1
When column type was installed in the building structure in the middle of the utility model adopted, as shown in Figure 9, the combined mild steel damper of surrendering stage by stage of several shear-bows was combined, and is installed in the agent structure of building.The top girder that the combined top levels of surrendering the L shaped side steel plate 1 on mild steel damper top stage by stage of shear-bow is passed through high-strength bolt and floor links to each other, and the bottom water plane of the L shaped side steel plate 1 of bottom links to each other with the wall type support fixation of floor bottom through high-strength bolt.When earthquake takes place when; Produce relative displacement between two L shaped side steel plates 1 in each damper; Yield displacement owing to rectangle mild-steel energy-consumption steel disc 4 under little shake is less, and rectangle mild-steel energy-consumption steel disc 4 at first begins to get into the plastic deformation energy dissipation when very little displacement, and X-shaped mild-steel energy-consumption steel disc 2 still is in elastic stage; This is phase I surrender power consumption, the seismic energy in the time of can dissipating little the shake; When middle shake is shaken greatly; The relative displacement of two L shaped side steel plates 1 in each damper is bigger; When reaching the yield displacement of X-shaped mild-steel energy-consumption steel disc 2; X-shaped mild-steel energy-consumption steel disc 2 gets into power consumption state and rectangle mild-steel energy-consumption steel disc 4 co-operation, the dissipation seismic energy, and this is second stage surrender power consumption.The quantity of X-shaped mild-steel energy-consumption steel disc 2 is more relatively in actual use, when shaking greatly, consumes more energy as the power consumption deposit, finally protects the agent structure purpose of safety.
When the utility model adopted support type to be installed in the building structure, shown in figure 10, the combined mild steel damper of surrendering stage by stage of several shear-bows was combined, and is installed in the agent structure of building.The top girder that the combined top levels of surrendering the L shaped side steel plate 1 on mild steel damper top stage by stage of shear-bow is passed through high-strength bolt and floor links to each other; The bottom water plane of the L shaped side steel plate 1 of bottom links to each other through the herringbone steel support fixation that is provided with on high-strength bolt and the floor bottom girder, supports the fixedly effect of damper of playing.When earthquake takes place when; Produce relative displacement between two L shaped side steel plates 1 in each damper; Yield displacement owing to rectangle mild-steel energy-consumption steel disc 4 under little shake is less, and rectangle mild-steel energy-consumption steel disc 4 at first begins to get into the plastic deformation energy dissipation when very little displacement, and X-shaped mild-steel energy-consumption steel disc 2 still is in elastic stage; This is phase I surrender power consumption, the seismic energy in the time of can dissipating little the shake; When middle shake is shaken greatly; The relative displacement of two L shaped side steel plates 1 in each damper is bigger; When reaching the yield displacement of X-shaped mild-steel energy-consumption steel disc 2; X-shaped mild-steel energy-consumption steel disc 2 gets into power consumption state and rectangle mild-steel energy-consumption steel disc 4 co-operation, the dissipation seismic energy, and this is second stage surrender power consumption.The quantity of X-shaped mild-steel energy-consumption steel disc 2 is more relatively in actual use, when shaking greatly, consumes more energy as the power consumption deposit, finally protects the agent structure purpose of safety.
The utility model is assembled into X-shaped steel disc power consumption assembly 7 through the mild-steel energy-consumption steel disc that adopts two kinds of difformities and power consumption mode and is installed in the cavity of L shaped side steel plate 1 formation with rectangle steel disc power consumption assembly 8; Wherein the yield displacement of the rectangle mild-steel energy-consumption steel disc 4 of shearing-type is little, initial stiffness is big, energy dissipation capacity is strong, and the yield displacement of the X-shaped mild-steel energy-consumption steel disc 2 of flexure type is big, initial stiffness is little, extreme displacement is big; When making little wind or little shake; The very little displacement of rectangle mild-steel energy-consumption steel disc 4 experience promptly gets into the plasticity power consumption, and X-shaped mild-steel energy-consumption steel disc 2 then is in elastic stage, during the big shake of strong wind; X-shaped mild-steel energy-consumption steel disc 2 begins surrender; Consume energy jointly with the rectangle mild-steel energy-consumption steel disc 4 of shearing-type, thus the effect of the power consumption of surrender stage by stage of realization damper, and the big characteristics of X-shaped mild-steel energy-consumption steel disc 2 extreme displacements make damper have stronger safety stock.
The utility model is compared than traditional single shearing-type mild steel damper or single flexure type X-shaped mild steel damper; The initial stiffness of traditional shearing-type mild steel damper is big, yield displacement is less; Can consume energy during little shake, good energy dissipation capacity is also arranged when shaking greatly, but often experience little shake for several times; Damper just needs all to change; Economy is relatively poor, and the ductility of mild steel material has certain limit, and the flexure type X-shaped mild steel damper that yield displacement is bigger wants the tired effect of the bigger shearing-type mild steel damper of specific stiffness and displacement course better; Traditional flexure type X-shaped mild steel damper is used comparatively extensive; But it is inoperative to exist under the big situation of yield displacement little shake, and the yield displacement design hour then fatigue behaviour of damper reduces greatly, and safety stock is not enough; Flexure type X-shaped mild-steel energy-consumption steel disc is as reaching the just situation of surrender power consumption of less displacement; Must X-shaped mild-steel energy-consumption steel disc be designed to form highly less, that thickness is bigger, this design can seriously reduce the fatigue behaviour of X-shaped mild-steel energy-consumption steel disc, influences the safety of damper; Even adopt the X-shaped mild-steel energy-consumption steel disc of two kinds of different sizes, thickness to constitute the mild steel damper of surrender type stage by stage, aspect safety, still can not get guaranteeing.And the combined mild steel damper of surrendering stage by stage of the shear-bow of the utility model combines two kinds of power consumption steel discs that above-mentioned conventional damper adopted effectively; Shearing-type steel disc power consumption when having realized little shake; The whole power consumption of damper makes the flexure type steel disc have stronger safety stock during big the shake; And during the for several times little shake of experience, the steel disc that need only change shearing-type gets final product, and maintenance cost is low.Therefore the combined mild steel damper of surrendering stage by stage of the shear-bow of the utility model efficiently solves tradition shearing or the single shortcoming of flexure type damper damping level; And simple in structure, low cost of manufacture, be easy to installing and replacing, space occupancy is little, less to the function and the appearance effects of building, and has the energy dissipation capacity characteristics effective, good endurance that consume energy by force, stage by stage.
The combined mild steel damper of surrendering stage by stage of the shear-bow of the utility model can be used in the building of multilayer, high-rise concrete structure and steel work; Be additional in the structure safety of protecting agent structure as the energy-dissipating and shock-absorbing member; This damper both can be used in the new construction, can be used for the seismic hardening transformation of old building again.
Above embodiment is merely the technological thought of explanation the utility model; Can not limit the protection domain of the utility model with this; Every technological thought that proposes according to the utility model, any change of on the technical scheme basis, being done all falls within the utility model protection domain; The technology that the utility model does not relate to all can realize through prior art.
Claims (8)
1. combined mild steel damper of surrendering stage by stage of shear-bow; Comprise two blocks of L shaped side steel plates (1), X-shaped mild-steel energy-consumption steel disc (2), X-shaped steel disc junction plate (3), rectangle mild-steel energy-consumption steel disc (4), rectangle steel disc junction plate (5) and rectangle steel disc stiffener (6); It is characterized in that described two blocks of L shaped side steel plates (1) are initial point and are symmetrical set, the two ends of X-shaped mild-steel energy-consumption steel disc (2) constitute X-shaped steel disc power consumption assembly (7) with two vertical backs that are weldingly connected of the X-shaped steel disc junction plate (3) that laterally arranges respectively; The rib wall of rectangle mild-steel energy-consumption steel disc (4) is vertical with rectangle steel disc stiffener (6) to be weldingly connected and the top and bottom of rectangle mild-steel energy-consumption steel disc (4) constitute rectangle steel discs power consumption assemblies (8) with two vertical backs that are weldingly connected of the rectangle steel disc junction plate (5) that laterally arranges respectively; The vertical plane that X-shaped steel disc power consumption assembly (7) and rectangle steel disc power consumption assembly (8) are arranged side by side in the cavity that L shaped side steel plate (1) constitutes also respectively through high-strength bolt and L shaped side steel plate (1) is fixedly linked.
2. the combined mild steel damper of surrendering stage by stage of shear-bow according to claim 1 is characterized in that described X-shaped steel disc power consumption assembly (7) and rectangle steel disc power consumption assembly (8) are arranged side by side along the horizontal direction of L shaped side steel plate (1) vertical plane.
3. the combined mild steel damper of surrendering stage by stage of shear-bow according to claim 1, the X-shaped steel disc junction plate (3) that it is characterized in that said X-shaped steel disc power consumption assembly (7) two ends is fixedly linked through the upright side walls of high-strength bolt and L shaped side steel plate (1).
4. the combined mild steel damper of surrendering stage by stage of shear-bow according to claim 1, the rectangle steel disc junction plate (5) that it is characterized in that said rectangle steel disc power consumption assembly (8) two ends is fixedly linked through the upright side walls of high-strength bolt and L shaped side steel plate (1).
5. the combined mild steel damper of surrendering stage by stage of shear-bow according to claim 1 is characterized in that described X-shaped mild-steel energy-consumption steel disc (2) vertically is distributed between two X-shaped steel disc junction plates (3).
6. the combined mild steel damper of surrendering stage by stage of shear-bow according to claim 1 is characterized in that described X-shaped mild-steel energy-consumption steel disc (2) is a flexure type mild-steel energy-consumption steel disc, and rectangle mild-steel energy-consumption steel disc (4) is a shearing-type mild-steel energy-consumption steel disc; Described X-shaped mild-steel energy-consumption steel disc (2) and rectangle mild-steel energy-consumption steel disc (4) adopt the low-yield steel of yield strength between 100MPa-225MPa to process.
7. the combined mild steel damper of surrendering stage by stage of shear-bow according to claim 1 is characterized in that the steel that described L shaped side steel plate (1), X-shaped steel disc junction plate (3), rectangle steel disc junction plate (5) and rectangle steel disc stiffener (6) adopt yield strength to be not less than 235MPa process.
8. the combined mild steel damper of surrendering stage by stage of shear-bow according to claim 1 is characterized in that the horizontal plane of described L shaped side steel plate (1) links to each other with building structure through high-strength bolt.
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| CN2012202078613U CN202544161U (en) | 2012-05-10 | 2012-05-10 | Shearing and bending combined phased yielding mild steel damper |
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| CN2012202078613U CN202544161U (en) | 2012-05-10 | 2012-05-10 | Shearing and bending combined phased yielding mild steel damper |
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| CN202544161U true CN202544161U (en) | 2012-11-21 |
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| CN102635176A (en) * | 2012-05-10 | 2012-08-15 | 南京工业大学 | Shear yield and bending yield combined type staged soft steel damper |
| CN102953322A (en) * | 2012-12-05 | 2013-03-06 | 江南大学 | Novel bridge shock isolation and absorption soft steel damping device |
| CN103352521A (en) * | 2013-07-29 | 2013-10-16 | 湖南大学 | One-way energy-dissipation supporting component |
| CN104612245A (en) * | 2015-02-06 | 2015-05-13 | 东南大学 | Novel high-performance steel-frame structure |
| CN105239694A (en) * | 2015-11-04 | 2016-01-13 | 沈阳建筑大学 | Shear type mild steel energy consumption support |
| CN105971144A (en) * | 2016-07-01 | 2016-09-28 | 上海赛弗工程减震技术有限公司 | Multi-stage yield shear type damper |
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| CN102953322B (en) * | 2012-12-05 | 2014-10-29 | 江南大学 | Novel bridge shock isolation and absorption soft steel damping device |
| CN103352521A (en) * | 2013-07-29 | 2013-10-16 | 湖南大学 | One-way energy-dissipation supporting component |
| CN103352521B (en) * | 2013-07-29 | 2015-04-15 | 湖南大学 | One-way energy-dissipation supporting component |
| CN104612245A (en) * | 2015-02-06 | 2015-05-13 | 东南大学 | Novel high-performance steel-frame structure |
| CN105239694A (en) * | 2015-11-04 | 2016-01-13 | 沈阳建筑大学 | Shear type mild steel energy consumption support |
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| CN106013493A (en) * | 2016-07-01 | 2016-10-12 | 上海赛弗工程减震技术有限公司 | Multi-stage yield coupling beam type damper for structural seismic resistance |
| CN107254983A (en) * | 2017-07-28 | 2017-10-17 | 中国地震局工程力学研究所 | Replaceable power consumption pedestal based on X-type mild steel piece |
| CN107816360A (en) * | 2017-10-24 | 2018-03-20 | 仇文革 | Utilize the big stroke rod-type damper of performance behind material peak |
| CN107882202A (en) * | 2017-12-20 | 2018-04-06 | 河北工业大学 | Self-resetting mild steel damper and assembling work progress |
| CN110080091A (en) * | 2019-06-12 | 2019-08-02 | 重庆三峡学院 | A kind of bridge structure compound energy-consumption device |
| CN110080091B (en) * | 2019-06-12 | 2023-10-24 | 重庆三峡学院 | Composite energy dissipation device of bridge structure |
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