CN100455763C - Friction-spring three-dimensional compounded shock isolating pedestal - Google Patents
Friction-spring three-dimensional compounded shock isolating pedestal Download PDFInfo
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- CN100455763C CN100455763C CNB2007100997532A CN200710099753A CN100455763C CN 100455763 C CN100455763 C CN 100455763C CN B2007100997532 A CNB2007100997532 A CN B2007100997532A CN 200710099753 A CN200710099753 A CN 200710099753A CN 100455763 C CN100455763 C CN 100455763C
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Abstract
The friction spring three-dimensional composite shock-proof bearing belongs to the shock insulation and damping control area. The application of the prior three-dimensional composite shock-proof bearing into the large span mesh roof structure has the following problems: (1) the level shock-proof bearing is series-connected with the vertical shock-proof device, the height of the bearing is large, so it is lack of stability ; (2) the horizontal displacement of the structure under earthquake is large, (3) it is lack of vertical pulling-proof ability, the bearing rotational capacity is insufficient. The composite shock-proof bearing in the invention mainly includes horizontal shock-proof device and vertical shock-proof device, the whole appearance of bearing is cylindrical. The horizontal direction of the bearing uses the plate slip shock-proof device to lower the height of bearing, and the stability is effectively guaranteed, at the same time the horizontal direction also is equipped with reset and spacing device to make the bearing has reset and spacing functions. The vertical direction uses spring shock-proof and has rational rotary capability through the structure design. In addition, the integral bearing in the invention has the anti-pulling performance.
Description
Technical field
The present invention relates to a kind of bearing, belong to building structure earthquake isolation control field with level, vertical three-dimensional composite shock insulation function.
Background technology
The bearing shock insulation is the Passive Control technology, be by between superstructure and lower support system, the seismic response that earthquake isolating equipment reduces superstructure being set, its dominant mechanism is that the basic cycle of project organization or the predominant period of former rank cycle and geological process are staggered, the structural vibration of part thereby the structure of avoiding and geological process predominant period are close, reduce the energy input of earthquake motion simultaneously, thereby reduce the seismic response of structure structure.
Along with the Chinese society rapid economy development, spatial mesh structure has been widely used in the buildings such as sports palace, exhibition hall, conference and exhibition center, terminal and industrial premises.The span of spatial mesh structure is generally bigger, the geological process of structure is multidirectional randomness, certain structures such as network frame house cap maintenance hangar etc., horizontal earthquake action is all stronger with the response under the vertical geological process, is applicable to that the shock isolating pedestal of this type of building should have three-dimensional composite shock insulation function.
Bearing with three-dimensional composite shock insulation function should possess following characteristics: (1) satisfies horizontal shock insulation requirement, the good and rational initial stiffness of energy dissipation capacity; (2) horizontal runback potential energy power is strong; (3) has certain vertical earthquake isolating effect, because the space good integrity of large-span structure, from existing earthquake situation, under severe earthquake action, most of rod members of space lattice roof structure still are in elastic state, therefore as long as rationally control the vertical rigidity of bearing, the vertical earthquake input that suitably reduces structure can be avoided earthquake; (4) the bearing vertical rigidity is moderate, requires to have rational initial stiffness on the one hand, to satisfy the vertical load bearing requirements of bearing, does not produce vibration when guaranteeing wind induced structural vibration and little shake simultaneously; (5) enough vertically pulling-resistants and turning power are arranged; (6) height of bearing is unsuitable excessive.
From the research and the mode of occupation of the shock isolating pedestal of big inter-network lattice structure, in the majority with laminated rubber material shock insulation.Though laminated rubber bases can be by the natural vibration period of extending structure, because the physical characteristic of himself causes existing following defective: can only the level of isolation geological process, can't realize multiple dimension shock-proof; Self damping is less, causes structure bigger horizontal movement can occur under geological process; The vertically pulling-resistant ability is relatively poor; Runback potential energy power deficiency after the shake.The existence of the problems referred to above makes the application of seismic isolation technology in large-span structure be subjected to certain constraint.
Along with marmem (SMA) the going deep into of application study in civil engineering, at above-mentioned deficiency, Chinese scholars is utilized shape memory effect, super-elasticity and the high damping characteristic of marmem, developed a collection of compound support that has from the Passive Control and half ACTIVE CONTROL of reset function, and its performance has been carried out theory analysis and experimental study.The research of the shock insulation of large span spatial structure is obtaining a large amount of achievements aspect the horizontal shock insulation, some shock isolation system has been applied to actual engineering, and has obtained good effect, but it is deficient relatively to satisfy the device of three-dimensional composite shock insulation requirement.
Mostly the research of present three-dimensional composite shock insulation is that at sandwich construction the technical measures of being taked are that horizontal shock insulation utilizes laminated rubber, vertically then adopts in parallel with damper or utilizes the hydraulic system shock insulation.Said system has feasibility in sandwich construction, but be applied to big inter-network grid roof structure and have following problem: (1) horizontal shock isolating pedestal and vertical earthquake isolating equipment polyphone, the height of bearing is increased greatly, under the effect of eccentric support additional bending moment, the stability of bearing is difficult to obtain enough assurances; (2) horizontal shock insulation adopts neoprene bearing, because horizontal damping is less, the horizontal movement of structure is bigger under geological process; (3) lack vertically pulling-resistant ability, bearing turning power deficiency.
Summary of the invention
The present invention provides a kind of three-dimensional shock isolation support for the composite shock insulation of spatial mesh structure.
Compounded shock isolating abutment of the present invention mainly comprises horizontal earthquake isolating equipment, vertical earthquake isolating equipment two large divisions, and the bearing general shape is cylindric.
Friction-spring three-dimensional compounded shock isolating pedestal comprises horizontal earthquake isolating equipment, vertical earthquake isolating equipment two large divisions, and the bearing general shape is cylindric;
Horizontal earthquake isolating equipment is positioned at the top of bearing, comprises horizontal support member, back-moving spring, glide lamella, horizontal resistance to plucking member and spacing member; Horizontal support member is by being made of upper junction plate, circular short column and bottom sealing plate successively from top to bottom, and their centre of form overlaps; Horizontal support member is positioned at the inside of outer casing, and outer casing is a pipe, and outer casing axis overlaps with the vertical axis of horizontal support member; The horizontal reset spring is positioned between circular short column and outer casing, arranges along the radial radiation of circular short column; One end of horizontal reset spring is connected with the inwall of outer casing, and the outer wall of the other end and circular short column is fixed;
Glide lamella is located at the bottom of bottom sealing plate, comprises the vertical spring bearing plate of slide surface, circular video disc and linking level and vertical earthquake isolating equipment from top to bottom successively; Sliding sheet is compounded in the soffit of back cover plate; Circular video disc is fixed on the upper surface of vertical spring bearing plate; Horizontal resistance to plucking member is made of limiting plate and postive stop baffle, and limiting plate is an annular slab, and the interior ring of limiting plate is fixed in the outer wall of circular short column; Postive stop baffle is arranged in the top of outer casing symmetrically, fixes with outer casing barrel; The spacing member of level is an annular steel ring, is fixed in the upper surface of vertical spring bearing plate, and lays cushion pad at the spacing member inwall of level;
Vertical earthquake isolating equipment is positioned at the bottom of bearing, comprises guide cylinder, shock insulation spring and spring precompressed stop; Guide cylinder is plugged on guide by homocentric slide cartridge and constitutes jointly, the barrel vertical section of slide cartridge is T-shaped, and its upper end is fixed on the soffit of vertical spring bearing plate, and the barrel vertical section of guide takes the shape of the letter U, the lower end is fixed on the upper surface of bottom junction plate, and in the guide bottom vertical pressure-bearing pad is set; The shock insulation spring is installed in the guide cylinder symmetrically, and shock insulation spring top is connected with the soffit of vertical spring bearing plate, and the upper surface of lower end and bottom junction plate is fixed; Spring precompressed stop is positioned at the top of vertical spring bearing plate, is plugged in the preformed hole of outer casing barrel, and preformed hole is evenly offered on the casing barrel outside;
Preset clearance between vertical spring bearing plate and casing inwall.
Bearing level of the present invention is to adopting dull and stereotyped sliding and shock isolation device, and its vertical height is minimized, thereby the overall height of bearing is reduced, so the stability of bearing is effectively guaranteed.In order to overcome the problem that resets after the big and shake of existing bearing horizontal slip displacement, bearing of the present invention has been set up the horizontal reset spring in horizontal earthquake isolating equipment, and the spacing member of the level that designed, to guarantee reset capability and the job security of bearing under horizontal earthquake action.In addition, the limiting plate of bearing of the present invention and the acting in conjunction of postive stop baffle make the horizontal earthquake isolating equipment of bearing have the resistance to plucking ability, and spring precompressed stop makes vertical earthquake isolating equipment also have the resistance to plucking ability, thereby bearing integral body has resistance to plucking.
For making bearing that the partial rotational ability can be provided, preset clearance between vertical spring bearing plate and casing inwall is from the textural rotation requirement of satisfying bearing.
The vertical earthquake isolating spring is selected different classes of spring for use according to the suffered load size of bearing, when abutment pressure is little, can select cylindrical helical compression spring for use, when abutment pressure is big, then can adopt ring spring.
Description of drawings
Fig. 1 a, horizontal reset device plane;
Fig. 1 b, resistance to plucking limiting plate plane of arrangement;
Fig. 1 c, vertical earthquake isolating equipment plane;
Fig. 1 d, the vertical A-A section of bearing;
Fig. 1 e, the vertical B-B section of bearing;
Fig. 2, bearing vertical cross section physical dimension figure;
Among the figure: D is the casing external diameter, and H is the casing height, H
1Be height of support.
1, upper junction plate; 2, circular short column; 3, bottom sealing plate; 4, horizontal reset spring; 5, outer casing; 6, sliding sheet; 7, circular video disc; 8, vertical spring bearing plate; 9, limiting plate; 10, postive stop baffle; 11, the spacing member of level; 12, cushion pad; 13, slide cartridge; 14, guide; 15, bottom junction plate; 16, vertical pressure-bearing pad; 17, shock insulation spring; 18, spring precompressed stop.
The specific embodiment
Technical scheme of the present invention is seen accompanying drawing 1, and compounded shock isolating abutment mainly comprises horizontal earthquake isolating equipment, vertical earthquake isolating equipment two large divisions, and the bearing general shape is cylindric.
It is characterized in that comprise horizontal earthquake isolating equipment, vertical earthquake isolating equipment two large divisions, the bearing general shape is cylindric;
Horizontal earthquake isolating equipment is positioned at the top of bearing, comprises horizontal support member, back-moving spring, glide lamella, horizontal resistance to plucking member and spacing member; Horizontal support member is by being made of upper junction plate 1, circular short column 2 and bottom sealing plate 3 successively from top to bottom, and their centre of form overlaps; Horizontal support member is positioned at the inside of outer casing 5, and outer casing 5 is a pipe, and outer casing 5 axis overlap with the vertical axis of horizontal support member; Horizontal reset spring 4 is positioned at 5 of circular short column 2 and outer casings, arranges along the radial radiation of circular short column 2; One end of horizontal reset spring 4 is connected with the inwall of outer casing 5, and the outer wall of the other end and circular short column 2 is fixed;
Glide lamella is located at the bottom of bottom sealing plate 3, comprises the vertical spring bearing plate 8 of slide surface 6, circular video disc 7 and linking level and vertical earthquake isolating equipment from top to bottom successively; Sliding sheet 6 is compounded in the soffit of back cover plate 3; Circular video disc 7 is fixed on the upper surface of vertical spring bearing plate 8; Horizontal resistance to plucking member is made of limiting plate 9 and postive stop baffle 10, and limiting plate 9 is an annular slab, and the interior ring of limiting plate 9 is fixed in the outer wall of circular short column 2; Postive stop baffle 10 is arranged in the top of outer casing 5 symmetrically, fixes with outer casing 5 barrels; The spacing member 11 of level is an annular steel ring, is fixed in the upper surface of vertical spring bearing plate 8, and lays cushion pad 12 at spacing member 11 inwalls of level;
Vertical earthquake isolating equipment is positioned at the bottom of bearing, comprises guide cylinder, shock insulation spring and spring precompressed stop; Guide cylinder is plugged on guide 14 by homocentric slide cartridge 13 and constitutes jointly, the barrel vertical section of slide cartridge 13 is T-shaped, its upper end is fixed on the soffit of vertical spring bearing plate 8, the barrel vertical section of guide 14 takes the shape of the letter U, the lower end is fixed on the upper surface of bottom junction plate 15, and in guide 14 bottoms vertical pressure-bearing pad 16 is set; Shock insulation spring 17 is installed in the guide cylinder symmetrically, and shock insulation spring 17 tops are connected with the soffit of vertical spring bearing plate 8, and the upper surface of lower end and bottom junction plate 15 is fixed; Spring precompressed stop 18 is positioned at the top of vertical spring bearing plate 8, is plugged in the preformed hole of outer casing 5 barrels, and preformed hole is evenly offered on casing 5 barrels outside;
Preset clearance between vertical spring bearing plate 8 and casing 5 inwalls.
Implementation basis of the present invention is Fig. 1, can process by six class critical pieces according to pedestal configurations and assembly program.Parts I is made of jointly the outer casing 5 and the guide 14 that are fixed on the junction plate 15 of bottom, parts II is a shock insulation spring 17, parts III comprises vertical spring bearing plate 8 and slide cartridge 13, slide cartridge 13 is fixed on the soffit of vertical spring bearing plate 8, parts IV is vertical spring retainer, parts V is horizontal support member, horizontal reset spring 4 and limiting plate 9, and parts VI is a postive stop baffle 10.At first, assemble then each critical piece completion of processing, sequence from bottom to top, key step can be summarized as:
(1) the vertical earthquake isolating spring is installed in parts I;
(2) installing component II:
(3) installing component III;
(4) on parts III, apply vertical pressure precompressed shock insulation spring 17, installing component IV then;
(5) installing component V;
(6) installing component VI.
Bearing of the present invention has two kinds of duties, i.e. static(al) effect duty and dynamic action duty.The shock insulation function of bearing is mainly reflected in the dynamically working state, and the specific embodiment of bearing is also launched at dynamic action.Because bearing of the present invention has level and vertical composite shock insulation function, can be simultaneously level to vertically to structures isolation effect, so embodiment is set forth with the structure and the operating principle of bearing closely related.
Level adopts sliding and shock isolation, and when bearing was subjected to the horizontal earthquake incentive action, 7 of the soffit of the bottom sealing plate 3 of horizontal support member and circular video discs produced and slide, and horizontal relative displacement occurs, realize horizontal shock insulation.Simultaneously, horizontal reset spring 4 is stretched or compressed, for horizontal support member provides the required restoring force that resets after the shake.For guaranteeing that bearing has enough slip properties and resistance to plucking ability, horizontal sliding device size correlation should satisfy following relation:
[U
h，max]≤(d
3-d
1)/2＜s
2
[U in the formula
H, max] be maximum unidirectional permission horizontal sliding amount, d
1, d
2Be respectively the diameter of circular video disc 7 and the spacing member 11 of level, s
2The minimum superimposed size of limiting plate 10 and postive stop baffle 11 during for the maximum horizontal slippage.
The vertical spring shock-proof that adopts, vertical earthquake isolating equipment is positioned at the bottom of bearing.Under vertical incentive action, shock insulation spring 17 moves up and down in guide cylinder.Because shock insulation spring 17 can make the characteristic frequency of bearing avoid the resonance frequency domain of input stimulus, thereby realize vertical earthquake isolating.Because the extreme value stroke of guide cylinder is less than the elastic limit decrement of shock insulation spring 17, and the guide bottom is provided with vertical pressure-bearing pad 16, thereby can guarantee that shock insulation spring 17 is in elastic stage all the time.Spring all produces elastic-restoring force in compression or after stretching, thereby resets after the vertical shake of bearing and can be guaranteed by shock insulation spring 17.In addition, because the reciprocal feature of transient state of the suffered dynamic loading of bearing all helps resetting of bearing.Spring precompressed stop 18 is positioned at the top of vertical spring bearing plate 8, is plugged in the preformed hole of outer casing 5 barrels, so pre-compressed spring spacing 18 makes bearing vertically have the resistance to plucking function.
Bearing has reliable service behaviour for making bearing under level and vertical geological process, realize " rigidity decoupling zero " in level with vertical at the textural bearing that requires." rigidity decoupling zero " reflection be the non-correlation of bearing horizontal rigidity and vertical rigidity, the key that realizes the rigidity decoupling zero is that to make the level of bearing and vertical displacement be the pair of orthogonal amount, the structure realization of just transferring to bearing of displacement.Level to, because the existence of spring precompressed stop 18 makes vertical spring be in preloading condition, thereby the slide surface 6 of guaranteeing bearing always is in tight contact condition with circular video disc 7, guarantee horizontal movement, the axial rigidity of horizontal earthquake isolating equipment is bigger than the rigidity of shock insulation spring 17 simultaneously, so vertical rigidity depends on the rigidity of vertical earthquake isolating equipment; Vertically, because the horizontal rigidity of guide cylinder is more much bigger than the horizontal rigidity of slide surface, so slippage rigidity is the control rigidity of bearing.
Diameter d
2Vertical spring bearing plate 8 and outer casing 5 inwall gap s
1Existence, make bearing possess the partial rotational ability, thereby satisfy the rotation requirement of bearing.
Claims (1)
1, friction-spring three-dimensional compounded shock isolating pedestal is characterized in that, comprises horizontal earthquake isolating equipment, vertical earthquake isolating equipment two large divisions, and the bearing general shape is cylindric;
Horizontal earthquake isolating equipment is positioned at the top of bearing, comprises horizontal support member, back-moving spring, glide lamella, horizontal resistance to plucking member and spacing member; Horizontal support member is by being made of upper junction plate (1), circular short column (2) and bottom sealing plate (3) successively from top to bottom, and their centre of form overlaps; Horizontal support member is positioned at the inside of outer casing (5), and outer casing (5) is a pipe, and outer casing (5) axis overlaps with the vertical axis of horizontal support member; Horizontal reset spring (4) is positioned between circular short column (2) and outer casing (5), arranges along the radial radiation of circular short column (2); One end of horizontal reset spring (4) is connected with the inwall of outer casing (5), and the outer wall of the other end and circular short column (2) is fixed;
Glide lamella is located at the bottom of bottom sealing plate (3), comprises the vertical spring bearing plate (8) of slide surface (6), circular video disc (7) and linking level and vertical earthquake isolating equipment from top to bottom successively; Sliding sheet (6) is compounded in the soffit of back cover plate (3); Circular video disc (7) is fixed on the upper surface of vertical spring bearing plate (8); Horizontal resistance to plucking member is made of limiting plate (9) and postive stop baffle (10), and limiting plate (9) is an annular slab, and the interior ring of limiting plate (9) is fixed in the outer wall of circular short column (2); Postive stop baffle (10) is arranged in the top of outer casing (5) symmetrically, fixes with outer casing (5) barrel; The spacing member of level (11) is an annular steel ring, is fixed in the upper surface of vertical spring bearing plate (8), and lays cushion pad (12) at the spacing member of level (11) inwall;
Vertical earthquake isolating equipment is positioned at the bottom of bearing, comprises guide cylinder, shock insulation spring and spring precompressed stop; Guide cylinder is plugged on the common formation of guide (14) by homocentric slide cartridge (13), the barrel vertical section of slide cartridge (13) is T-shaped, its upper end is fixed on the soffit of vertical spring bearing plate (8), the barrel vertical section of guide (14) takes the shape of the letter U, the lower end is fixed on the upper surface of bottom junction plate (15), and in guide (14) bottom vertical pressure-bearing pad (16) is set; Shock insulation spring (17) is installed in the guide cylinder symmetrically, and shock insulation spring (17) top is connected with the soffit of vertical spring bearing plate (8), and the upper surface of lower end and bottom junction plate (15) is fixed; Spring precompressed stop (18) is positioned at the top of vertical spring bearing plate (8), is plugged in the preformed hole of outer casing (5) barrel, and preformed hole is evenly offered on casing (5) barrel outside;
Preset clearance between vertical spring bearing plate (8) and casing (5) inwall.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100997532A CN100455763C (en) | 2007-05-30 | 2007-05-30 | Friction-spring three-dimensional compounded shock isolating pedestal |
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|---|---|---|---|
| CNB2007100997532A CN100455763C (en) | 2007-05-30 | 2007-05-30 | Friction-spring three-dimensional compounded shock isolating pedestal |
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| CN101086189A CN101086189A (en) | 2007-12-12 |
| CN100455763C true CN100455763C (en) | 2009-01-28 |
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| CNB2007100997532A Expired - Fee Related CN100455763C (en) | 2007-05-30 | 2007-05-30 | Friction-spring three-dimensional compounded shock isolating pedestal |
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