CN103867625A - Rope type self-reset shape memory alloy seismic isolation and seismic reduction support - Google Patents
Rope type self-reset shape memory alloy seismic isolation and seismic reduction support Download PDFInfo
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Abstract
The invention discloses a rope type self-reset shape memory alloy seismic isolation and seismic reduction support, and belongs to the technical fields of an architectural structure and mechanical engineering. A transverse anti-seismic cylinder tube (1), a transverse anti-seismic sliding passage (2), a connecting rod (3), a vertical anti-seismic cylinder tube (4), a vertical anti-seismic piston (5), a common biasing spring (6), a transverse anti-seismic alloy wire rope (7), a vertical anti-seismic alloy wire rope (9) and a fixing upright post (13) are added on the basis of an original structure. According to the rope type self-reset shape memory alloy seismic isolation and seismic reduction support disclosed by the invention, the self-reset capacity in the transverse direction is obtained while the self-reset capacity in the vertical direction is obtained, the self-reset capacity in the transverse direction and the self-reset capacity in the vertical direction are reasonably combined, and multidirectional seismic isolation and seismic reduction is obtained while the energy dissipation stability of multidirectional seismic isolation and seismic reduction of the rope type self-reset shape memory alloy seismic isolation and seismic reduction support is increased; meanwhile, the use is wide, the rope type self-reset shape memory alloy seismic isolation and seismic reduction support not only can be independently used as a tensile and compressive damper, but also can be independently used as a shear-resisting damper, and the rope type self-reset shape memory alloy seismic isolation and seismic reduction support has a wide market prospect.
Description
Technical field
The present invention relates to a kind of earthquake isolation bearing, particularly a kind of cable type Self-resetting marmem earthquake isolation bearing, belongs to building structure and mechanical engineering technical field.
Background technique
In recent years, earthquake isolation bearing is widely used in the important significant structure field such as various buildings, machinery, Aero-Space, communications and transportation, sports equipment, all very crucial to the selected material of this type of high-performance bearing, designing technique and manufacturing process.
For earthquake isolation bearing, the form adopting both at home and abroad can be divided into two large classes: neoprene bearing and sliding isolated bearing.Wherein, natural laminated rubber bearing has larger vertical rigidity, bear building weight time vertical deformation little, vertical earthquake isolation poor effect, and horizontal rigidity is less, and linear properties is good, because the damping of natural laminated rubber bearing is very little, do not possess enough energy dissipation capacities, so generally combine use with other damper or energy consumption equipment in structure is used.Although and the good lead rubber bearing of development prospect has comparatively ideal vertical rigidity, and itself have the ability of certain earthquake energy, its Security, durability and long time stability have much room for improvement, and particularly after shake, structure reset capability is very poor; Sliding isolated bearing effectively limits seismic energy and transmits to top and feed back to bottom by relative sliding motion and friction energy-dissipating, the method is stressed reliable, difficulty of construction is little, and can consider steel part antirust, damage replacing problem, but the deficiency of its maximum is to need additional configuration resetting-mechanism device, otherwise after shake, structure cannot reset.
As known from the above, as the important parameter of earthquake isolation bearing, the strong and weak problem of its damping energy dissipation characteristic and recoverable deformation ability, it is the difficult point in engineering structure antidetonation field always, simultaneously in engineering, more existing bearings embody some narrow limitation in application: the problem of for example aging and durability, the reliability of long-term work, renewal after strong earthquakes and replacement problem and cannot recover etc. after strong earthquakes, therefore, lead rubber bearing or reinforce rear support with new material, natural interlayer shock insulation rubber bearing, traditional earthquake isolation methods such as simple common metal bearing and slip support abutment are all difficult to realize the control of multi-directional intelligent Self-resetting earthquake isolation.
Chinese patent " the mixed memory alloy damper " (patent No.: ZL200620200532.0 that on July 11st, 2007 is announced, notification number: CN2921137Y), the Chinese patent of on February 27th, 2008 bulletin " self-resetting super-elastic shape memory alloy damper ' (the patent No.: ZL200720011605.6, notification number: CN201027352Y), Chinese patent " the damper of multi-dimensional superelastic shape memory alloy " (patent No.: ZL200720011607.5 that on April 23rd, 2008 is announced, notification number: CN201050121Y), disclosed Chinese patent on February 24 " the shape memory alloy (SMA) self-resetting deformation energy-consumption damper " (patent No.: ZL200910011327.8 in 2010, publication number: CN101654935AY), and disclosed Chinese patent on June 20th, 2012 " multidirectional six frustum cone cylinder marmem dampers " (application number: 201110318312.3, publication number: CN102505768A) etc. the new material that adopts of damper be all marmem,
At present, narrow limitation in applying for fear of this class bearing, one of method solving is exactly to find new material to redesign, Chinese patent " a kind of Ni-Ti-based shape memory alloy for fabrication structural vibration reduction the device " (patent No.: ZL200910036260 of announcing on April 14th, 2010, notification number: in CN101693964, in technological scheme, the new material that adopts is exactly Ni-Ti-based shape memory alloy, simple in structure, anti seismic efficiency is remarkable, but Applicable scope is narrower, and cost is too high; In Chinese patent " for the intelligent shock-isolation damping nitinol bearing of large-span space structure (rack) " (patent No.: ZL201210562576 of bulletin on March 20th, 2013, notification number: CN102979181), material that this device adopts is also Ni-Ti-based shape memory alloy, singly only has the self-resetting capability of vertical direction, thereby cannot accomplish multidirectional earthquake isolation, and purposes is comparatively single, there is no market widely.
Summary of the invention
The problem existing for above-mentioned prior art, the invention provides a kind of cable type Self-resetting marmem earthquake isolation bearing, simple in structure, in thering is the self-resetting capability of vertical direction, possesses the self-resetting capability of horizontal direction, and both rational combinations, when improving the energy dissipating stability of the multidirectional earthquake isolation of bearing, have accomplished multidirectional earthquake isolation; And of many uses, both can use as Anti-pull-press damper separately, can use as shearing resistance damper separately again.
To achieve these goals, the present invention proposes a kind of cable type Self-resetting marmem earthquake isolation bearing, comprise vertical antidetonation cylinder barrel, vertical antidetonation piston and common bias spring, vertical antidetonation cylinder barrel top has manhole, bottom welding has mounting flange, and vertical antidetonation piston and common bias spring are arranged in vertical antidetonation cylinder barrel;
On the basis of said structure, Horizontal Seismic cylinder barrel, Horizontal Seismic slideway, connecting rod, Horizontal Seismic B alloy wire rope, vertical antidetonation B alloy wire rope and vertical columns in structure, are increased;
Wherein, Horizontal Seismic slideway is bowl cover shape, central position is provided with vertical columns, vertical columns top is welded with circular baffle plate, Horizontal Seismic cylinder barrel is enclosed within vertical columns outside, , Horizontal Seismic cylinder barrel top is welded with adpting flange, adpting flange internal diameter is less than the diameter of circular baffle plate, simultaneously, Horizontal Seismic cylinder barrel is connected by many Horizontal Seismic B alloy wire ropes with vertical columns, Horizontal Seismic B alloy wire rope is arranged along vertical columns external diameter even circumferential, one end of every Horizontal Seismic B alloy wire rope is fixed on vertical columns by active chuck, the other end is connected to the inner tube wall place of cylinder barrel by fixed chuck,
Connecting rod is welded on Horizontal Seismic slideway bottom, and be connected with vertical antidetonation piston through the circular hole of opening on vertical antidetonation cylinder barrel, the upper and lower both sides of vertical antidetonation piston are connected with two cylinder caps up and down of vertical antidetonation cylinder barrel by two groups of vertical antidetonation B alloy wire ropes respectively, vertical antidetonation B alloy wire rope arranges many, along vertical antidetonation inner wall of cylinder circumference uniform distribution, one end of the vertical antidetonation B alloy wire of each root rope is fixed on a side of vertical antidetonation piston by active chuck, the other end is connected to a side of cylinder barrel cylinder cap with fixed chuck; Common bias spring one end is arranged on vertical antidetonation piston lower end, and the other end is arranged on vertical antidetonation cylinder barrel inner bottom surface.
Further, Horizontal Seismic B alloy wire rope arranges three, arranges along vertical columns external diameter even circumferential.
Further, Horizontal Seismic B alloy wire rope arranges five, arranges along vertical columns external diameter even circumferential.
Further, Horizontal Seismic B alloy wire rope arranges four, arranges along vertical columns external diameter even circumferential.
Further, Horizontal Seismic B alloy wire rope arranges the six roots of sensation, arranges along vertical columns external diameter even circumferential.
Further, vertical antidetonation inner wall of cylinder, corresponding vertical antidetonation piston installed position are evenly arranged the smooth slideway of orientation of multiple projections along circumference place.
Further, also comprise Universal pulley, Universal pulley arranges multiple, and even cloth is fixedly mounted on the cross section bottom of Horizontal Seismic cylinder barrel.
Contrast existing earthquake isolation bearing, the present invention has designed Horizontal Seismic device and vertical antishock device in bearing simultaneously, passed to by vertical columns on Horizontal Seismic cylinder barrel by many Horizontal Seismic B alloy wire ropes at bearing transverse vibration ripple, Horizontal Seismic cylinder barrel is done in reciprocal translational motion, many Horizontal Seismic B alloy wire ropes hocket to stretch and change with retraction, and larger hysteretic energy and restoring force is provided, simultaneously, vertical shock wave will be passed on vertical antidetonation piston by the cylinder cap of vertical antidetonation cylinder barrel by vertical antidetonation B alloy wire rope, and vertical antidetonation piston is done in reciprocal upper and lower translation motion, upper and lower symmetrically arranged two groups of vertical antidetonation B alloy wire ropes and common bias spring all hocket and stretch and retraction distortion, make vertical antidetonation B alloy wire rope and common bias spring in the process of generation superelasticity and resiliently deformable, consume a large amount of vibration energy and followed enough restoring forces to occur, thereby accomplish multidirectional earthquake isolation, and when original structure has the self-resetting capability of vertical direction, possesses the self-resetting capability of horizontal direction, meanwhile, the earthquake isolation bearing of this patent can use in building structure, also can use as Anti-pull-press damper separately, can use as shearing resistance damper separately again, has market prospects widely.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 be in Fig. 1 A-A to the structural representation in cross section:
Fig. 3 is the structural representation of Horizontal Seismic cylinder barrel;
Fig. 4 is the structural representation of Horizontal Seismic slideway;
Fig. 5 is the structural representation of vertical antidetonation piston;
Fig. 6 is the structural representation of vertical antidetonation cylinder barrel;
Fig. 7 is the test data figure that the present invention carries out one directional tensile test on universal testing machine platform;
Fig. 8 is the test data figure that the present invention carries out unidirectional twisting test on universal testing machine platform;
Fig. 9 is the test data figure that the present invention carries out tension-torsion composite test on universal testing machine platform;
Figure 10 is the plotted curve between strain capacity and the restoring force of nitinol alloy wire tension test;
Figure 11 is the schematic diagram of seismic support place to a multidirectional shock wave stress response situation that common damper and damper of the present invention are arranged on respectively a certain structure;
Figure 12 is the schematic diagram of seismic support place to a multidirectional shock wave displacement response condition that common damper and damper of the present invention are arranged on respectively a certain structure.
In figure: 1, Horizontal Seismic cylinder barrel, 2, Horizontal Seismic slideway, 3, connecting rod, 4, vertical antidetonation cylinder barrel, 5, vertical antidetonation piston, 6, common bias spring, 7, Horizontal Seismic B alloy wire rope, 8, vertical antidetonation B alloy wire rope, 9, Universal pulley, 10, fixed chuck, 11, active chuck, 12, directed smooth slideway, 13, vertical columns, 14, fastening flange, 15, baffle plate.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of cable type Self-resetting marmem earthquake isolation bearing, comprise vertical antidetonation cylinder barrel 4, vertical antidetonation piston 5 and common bias spring 6, as shown in Figure 6, vertical antidetonation cylinder barrel 4 tops have manhole, and bottom welding has fastening flange 14, as shown in Figure 5, vertical antidetonation piston 5 is a raw sheet, have a circle manhole, and common bias spring 6 is arranged in vertical antidetonation cylinder barrel 4;
On the basis of the above, comprise Horizontal Seismic cylinder barrel 1, Horizontal Seismic slideway 2, connecting rod 3, vertical antidetonation cylinder barrel 4, vertical antidetonation piston 5, common bias spring 6, Horizontal Seismic B alloy wire rope 7, vertical antidetonation B alloy wire rope 9 and vertical columns 13;
Wherein, as shown in Figure 4, Horizontal Seismic slideway 2 is bowl cover shape, central position is provided with vertical columns 13, vertical columns 13 tops are welded with circular baffle plate 15, Horizontal Seismic cylinder barrel 1 is enclosed within vertical columns 13 outsides, as shown in Figure 3, Horizontal Seismic cylinder barrel 1 top is welded with adpting flange, adpting flange internal diameter is less than the diameter of circular baffle plate 15, Horizontal Seismic cylinder barrel 1 is connected by many Horizontal Seismic B alloy wire ropes 7 with vertical columns 13, Horizontal Seismic B alloy wire rope 7 is arranged along vertical columns 13 external diameter even circumferentials, one end of every Horizontal Seismic B alloy wire rope 7 is fixed on vertical columns 13 by active chuck 11, the other end is connected to the inner tube wall place of cylinder barrel by fixed chuck 10,
Connecting rod 3 is welded on Horizontal Seismic slideway 2 bottoms, and be connected with vertical antidetonation piston 5 through the circular hole of opening on vertical antidetonation cylinder barrel 4, vertical antidetonation piston is connected with two cylinder caps up and down of vertical antidetonation cylinder barrel 4 by two groups of vertical antidetonation B alloy wire ropes 8 respectively both sides Shang Xia 5, vertical antidetonation B alloy wire rope 8 arranges many, along vertical antidetonation cylinder barrel 4 inwall circumference uniform distributions, one end of the vertical antidetonation B alloy wire of each root rope 8 is fixed on a side of piston by active chuck 11, the other end is connected to a side of cylinder barrel cylinder cap with fixed chuck 10; Common bias spring 6 one end are arranged on vertical antidetonation piston 5 lower ends, and the other end is arranged on vertical antidetonation cylinder barrel 4 inner bottom surface.
Further improve as the present invention, Horizontal Seismic B alloy wire rope 7 arranges three, also can be designed as five, arranges along vertical columns 13 external diameter even circumferentials.Above-mentioned design, Horizontal Seismic B alloy wire rope 7 is the polygonal on a radix limit with the line of the tie point of vertical columns 13, thereby has played firm effect.Equally, Horizontal Seismic B alloy wire rope 7 arranges four, also can be designed as the six roots of sensation, and Horizontal Seismic B alloy wire rope 7 is symmetrical, has played equally firm effect.
Further improve as the present invention, as shown in Figure 2, vertical antidetonation cylinder barrel 4 inwalls, corresponding vertical antidetonation piston 5 installed positions are evenly arranged the smooth slideway 12 of orientation of multiple projections along circumference place, limited vertical antidetonation piston 5 rotates in fixed axis in vertical antidetonation cylinder barrel 4, make vertical antidetonation piston 5 in vertical antidetonation cylinder barrel 4, do reciprocal translational motion along slideway direction, strengthen the effect of damping.
Further improve as the present invention, in device, also comprise Universal pulley 9, Universal pulley 9 arranges multiple, and even cloth is fixedly mounted on the cross section bottom of Horizontal Seismic cylinder barrel 1, thereby guarantee that Horizontal Seismic cylinder barrel 1 is done reciprocal translational motion more smoothly in the time of work.
In the course of the work, while receiving vibrations, bearing transverse vibration ripple is passed on Horizontal Seismic cylinder barrel 1 by vertical columns 13 by many Horizontal Seismic B alloy wire ropes 7, Horizontal Seismic cylinder barrel 1 is done in reciprocal translational motion, many Horizontal Seismic B alloy wire ropes 7 hocket to stretch and change with retraction, and larger hysteretic energy and restoring force is provided; Simultaneously, vertical shock wave will be passed on vertical antidetonation piston 5 by the cylinder cap of vertical antidetonation cylinder barrel 4 by vertical antidetonation B alloy wire rope 8, and vertical antidetonation piston 5 is done in reciprocal upper and lower translation motion, upper and lower symmetrically arranged two groups of vertical antidetonation B alloy wire ropes 8 and common bias spring 6 all hocket and stretch and retraction distortion, make vertical antidetonation B alloy wire rope 8 and common bias spring 6 in the process of generation superelasticity and resiliently deformable, consume a large amount of vibration energy and followed enough restoring forces to occur
Experiment 1:
By the cable type Self-resetting marmem earthquake isolation bearing of above-mentioned making, be arranged on universal testing machine, carry out the simple loading and unloading test of three classes: the one, unidirectional tension and compression test, test data (as Fig. 7); The 2nd, unidirectional shearing test, test data (as Fig. 8); The 3rd, draw and cut composite test, test data (as Fig. 9).Fig. 7-Fig. 9, has provided bearing of the present invention, in the situation that loading and unload, and the relation curve between external load and displacement.Can be found out by Fig. 7-Fig. 9, owing to loading and unloading the impact of cyclic loading, cause the outer force-displacement curve of bearing to present significantly a typical hysteresis closed curve (hysteresis loop), but this curve does not show and significantly (answers) power platform in load/unload process, its reason is that the B alloy wire in bearing only has a little part that martensite phase transformation transformation has occurred, and the still state in resiliently deformable of most of material.However, B alloy wire has also shown good dissipation characteristics significantly, have good power consumption hysteresis loop and high recovery (or reply) ability, and hysteresis loop increases with the increase of external load.Figure 10 is the curve between strain capacity and the restoring force of tension test of nitinol alloy wire, B alloy wire is more than after appropriate stretching, restoring force can reach 620Mpa, in the time that the strain capacity of B alloy wire reaches 10 ﹪ left and right, B alloy wire can produce about 680Mpa restoring force, and the self-resetting capability of this type of bearing is very strong as can be seen here.
Experiment 2:
By the cable type Self-resetting marmem earthquake isolation bearing of above-mentioned making, be arranged on the seismic support place of a certain structure, earthquake isolation effect is fine.As Figure 11 has illustrated common aseismatic bearing, at the seismic support place of a certain structure, to the situation of a multidirectional shock wave displacement and stress response, the earthquake isolation effect of finding out common bearing from the data obtained is poor, main cause has two: the one, and the automatic recovery ability of common aseismatic bearing is very poor, and the 2nd, a little less than damping dissipation energy ability; Figure 12 has illustrated after installation alloy earthquake isolation of the present invention bearing, the earthquake isolation situation of support place to multidirectional shock wave response, the effect of energy dissipation that can see this bearing is fine, and durability and the stability of earthquake isolation are higher, due to the superelasticity effect of horizontal and vertical B alloy wire rope, in very large deformation band, the distortion of B alloy wire rope will recover in the time that bearing vibrations are returned to equilibrium position, this process mechanical energy that engineering component in use causes that simultaneously dissipated, and damping effect is good.
Through contrast, Figure 11 can disclose, under multidirectional shock wave effect, maximum displacement and stress response extreme value that common seat supports place is installed reach respectively 15.0cm and 80Mpa, and be only 3.5cm and 25Mpa respectively for maximum displacement and stress response extreme value that seat supports of the present invention place is installed, approximately the former 1/3rd, relatively both response curves can be seen simultaneously, the displacement response curve at common seat supports place, on the basis of away from equilibrium location (support displacement is as zero) certain displacement, there is fluctuation variation, between adjacent moment, displacement and STRESS VARIATION are larger simultaneously, the displacement response curve fluctuation that seat supports of the present invention place is installed changes around balance (support displacement is zero) position, this illustrates that the automatic recovery capability of this bearing is strong, simultaneous displacement and stress fluctuation change very little, be between adjacent moment displacement and STRESS VARIATION less, delay and reduced the harm of shock wave, this further shows, utilize the design feature of superelastic effect and high damping characteristic and the structure of niti material, can suppress largely the response of structure under multidirectional shock wave.In sum, adopt new material marmem to carry out structure redesign, can make easily the performance of bearing be very significantly improved and improve.
Claims (7)
1. a cable type Self-resetting marmem earthquake isolation bearing, comprise vertical antidetonation cylinder barrel (4), vertical antidetonation piston (5) and common bias spring (6), vertical antidetonation cylinder barrel (4) top has manhole, bottom welding has fastening flange (14), and described vertical antidetonation piston (5) and common bias spring (6) are arranged in vertical antidetonation cylinder barrel (4);
It is characterized in that, also comprise Horizontal Seismic cylinder barrel (1), Horizontal Seismic slideway (2), connecting rod (3), Horizontal Seismic B alloy wire rope (7), vertical antidetonation B alloy wire rope (9) and vertical columns (13);
Wherein, described Horizontal Seismic slideway (2) is bowl cover shape, central position is provided with vertical columns (13), vertical columns (13) top is welded with circular baffle plate (15), described Horizontal Seismic cylinder barrel (1) is enclosed within vertical columns (13) outside, Horizontal Seismic cylinder barrel (1) top is welded with adpting flange, adpting flange internal diameter is less than the diameter of circular baffle plate (15), Horizontal Seismic cylinder barrel (1) is connected by many Horizontal Seismic B alloy wire ropes (7) with vertical columns (13), Horizontal Seismic B alloy wire rope (7) is arranged along vertical columns (13) external diameter even circumferential, one end of every Horizontal Seismic B alloy wire rope (7) is fixed on vertical columns (13) by active chuck (11), the other end is connected to the inner tube wall place of cylinder barrel by fixed chuck (10),
Described connecting rod (3) is welded on Horizontal Seismic slideway (2) bottom, and be connected with vertical antidetonation piston (5) through the circular hole of opening on vertical antidetonation cylinder barrel (4), the upper and lower both sides of described vertical antidetonation piston (5) are connected with two cylinder caps up and down of vertical antidetonation cylinder barrel (4) by two groups of vertical antidetonation B alloy wire ropes (8) respectively, described vertical antidetonation B alloy wire rope (8) arranges many, along vertical antidetonation cylinder barrel (4) inwall circumference uniform distribution, one end of the vertical antidetonation B alloy wire of each root rope (8) is fixed on a side of piston by active chuck (11), fixed chuck for the other end (10) is connected to a side of cylinder barrel cylinder cap, common bias spring (6) one end is arranged on vertical antidetonation piston (5) lower end, and the other end is arranged on vertical antidetonation cylinder barrel (4) inner bottom surface.
2. a kind of cable type Self-resetting marmem earthquake isolation bearing according to claim 1, is characterized in that, described Horizontal Seismic B alloy wire rope (7) arranges three, arranges along vertical columns (13) external diameter even circumferential.
3. a kind of cable type Self-resetting marmem earthquake isolation bearing according to claim 1, is characterized in that, described Horizontal Seismic B alloy wire rope (7) arranges five, arranges along vertical columns (13) external diameter even circumferential.
4. a kind of cable type Self-resetting marmem earthquake isolation bearing according to claim 1, is characterized in that, described Horizontal Seismic B alloy wire rope (7) arranges four, arranges along vertical columns (13) external diameter even circumferential.
5. a kind of cable type Self-resetting marmem earthquake isolation bearing according to claim 1, is characterized in that, described Horizontal Seismic B alloy wire rope (7) arranges the six roots of sensation, arranges along vertical columns (13) external diameter even circumferential.
6. a kind of cable type Self-resetting marmem earthquake isolation bearing according to claim 1, it is characterized in that, described vertical antidetonation cylinder barrel (4) inwall, corresponding vertical antidetonation piston (5) installed position are evenly arranged the smooth slideway of orientation (12) of multiple projections along circumference place.
7. a kind of cable type Self-resetting marmem earthquake isolation bearing according to claim 1, it is characterized in that, also comprise Universal pulley (9), described Universal pulley (9) arranges multiple, and even cloth is fixedly mounted on the cross section bottom of Horizontal Seismic cylinder barrel (1).
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