CN112523364A - Anti-pulling double-layer double-pendulum type friction pendulum vibration isolation support - Google Patents
Anti-pulling double-layer double-pendulum type friction pendulum vibration isolation support Download PDFInfo
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- CN112523364A CN112523364A CN202011184372.6A CN202011184372A CN112523364A CN 112523364 A CN112523364 A CN 112523364A CN 202011184372 A CN202011184372 A CN 202011184372A CN 112523364 A CN112523364 A CN 112523364A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/36—Bearings or like supports allowing movement
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
Abstract
The invention discloses an anti-pulling double-layer double-pendulum friction pendulum vibration isolation support which comprises an upper base, a transition base, a lower base, an upper sliding block, a lower sliding block, an upper anti-pulling piece and a lower anti-pulling piece, wherein the front side surface and the rear side surface of the upper base are respectively provided with a first sliding groove; the front side surface and the rear side surface of the transition base are respectively provided with a second sliding chute; third sliding chutes are arranged on the left side surface and the right side surface of the transition base; a fourth sliding chute is arranged on the left side surface and the right side surface of the lower base; the upper base, the upper sliding block and the transition base can generate relative friction translation sliding in the left-right direction; the transition base, the lower sliding block and the lower base can generate relative friction translation sliding in the front-back direction between each two; the two upper anti-pulling pieces are respectively arranged on the left side and the right side of the upper base and the transition base; two lower pulling-resistant pieces are respectively arranged on the left side and the right rear side of the transition base and the lower base. The invention has the advantages of strong drawing resistance, large deformation capability, good shock insulation effect, simple structure, convenient manufacture and improved production efficiency.
Description
Technical Field
The invention relates to the technical field of civil engineering structure shock insulation, in particular to an anti-pulling double-layer double-pendulum type friction pendulum shock insulation support.
Background
The seismic isolation technology is the technology which can control structural damage most effectively in the world at present, earthquakes frequently occur in China, most cities have higher earthquake risks, and therefore seismic isolation buildings are developed vigorously in China. The most key realization device of the seismic isolation building is a seismic isolation support.
At present, two main types of shock insulation supports are provided, one type is a rubber shock insulation support which mainly comprises rubber and a laminated steel plate; the vibration isolation support for the friction pendulum is divided into a simple pendulum, a double pendulum and a compound pendulum according to different structures of the friction pendulum. Both of these supports are widely used in practical engineering. However, the common feature of these two supports is that they cannot resist large tonnage tensile forces. The number of high-rise buildings in China is increased year by year, the high-rise buildings are difficult to avoid bottom tension under the action of earthquake, and the application of the technology in the high-rise buildings is limited due to the difficulty in realizing uplift resistance of the shock isolation device.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide the anti-pulling double-layer double-pendulum type friction pendulum seismic isolation support which is strong in anti-pulling capacity and large in deformation capacity, ensures a horizontal seismic isolation effect, is simple in structure, convenient to manufacture, low in cost and high in production efficiency.
According to the embodiment of the invention, the anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing comprises:
the front side surface and the rear side surface of the upper base are respectively provided with a first sliding chute, and the length direction of the first sliding chutes is approximately positioned in the left-right direction;
the transition base is arranged below the upper base; the front side surface and the rear side surface of the transition base are respectively provided with a second sliding chute, and the length direction of the second sliding chutes is approximately positioned in the left-right direction; third sliding grooves are formed in the left side surface and the right side surface of the transition base, and the length direction of each third sliding groove is approximately in the front-back direction;
the lower base is arranged below the transition base, fourth sliding grooves are formed in the left side surface and the right side surface of the lower base, and the length direction of each fourth sliding groove is approximately in the front-back direction;
the upper sliding block is arranged between the bottom surface of the upper base and the top surface of the transition base, and the upper base, the upper sliding block and the transition base can generate relative friction translational sliding in the left-right direction;
the lower sliding block is arranged between the bottom surface of the transition base and the top surface of the lower base, and the transition base, the lower sliding block and the lower base can generate relative friction translational sliding in the front-rear direction between every two of the transition base, the lower sliding block and the lower base;
two upper anti-pulling pieces are arranged, the two upper anti-pulling pieces are respectively arranged on the front side and the rear side of the upper base and the transition base, the upper ends of the two upper anti-pulling pieces are respectively provided with a first anti-pulling bulge, the lower ends of the two upper anti-pulling pieces are respectively provided with a second anti-pulling bulge, the first anti-pulling bulges of the two upper anti-pulling pieces are respectively correspondingly adapted to be slidably clamped in the first sliding grooves of the upper base, and the second anti-pulling bulges of the two upper anti-pulling pieces are respectively correspondingly adapted to be slidably clamped in the second sliding grooves of the transition base; the two upper anti-pulling pieces cannot fall off and can synchronously slide and rotate in the same direction with the upper sliding block;
two lower anti-pulling parts are arranged, the two lower anti-pulling parts are respectively arranged on the left side and the right side of the transition base and the lower base, the upper ends of the two lower anti-pulling parts are respectively provided with a third anti-pulling bulge, the lower ends of the two lower anti-pulling parts are respectively provided with a fourth anti-pulling bulge, the third anti-pulling bulges of the two lower anti-pulling parts are respectively correspondingly adapted and slidably clamped in the third sliding groove of the transition base, and the fourth anti-pulling bulges of the two lower anti-pulling parts are respectively correspondingly adapted and slidably clamped in the fourth sliding groove of the lower base; two the resistance to plucking piece can not drop and can with lower sliding block synchronous syntropy slides and rotates down.
According to the anti-pulling double-layer double-pendulum type friction pendulum vibration isolation support disclosed by the embodiment of the invention, the upper base, the transition base, the lower base, the upper sliding block and the lower sliding block are arranged to form the double-pendulum type friction pendulum, relative friction translational sliding can be generated between the upper base and the transition base in the left-right direction, relative friction translational sliding can be generated between the transition base and the lower base in the front-back direction, the deformation capacity of the vibration isolation support is large, the vibration isolation effect of the vibration isolation support in the horizontal direction is ensured, and in addition, the occupied space can be reduced by the double-pendulum structure; the two upper pulling-resistant pieces are correspondingly clamped in the two first sliding grooves and the two second sliding grooves respectively, and the two lower pulling-resistant pieces are correspondingly clamped in the two third sliding grooves and the two fourth sliding grooves respectively, so that the defect that a traditional double-pendulum friction pendulum support is difficult to pull out under the condition that the horizontal operation of the shock insulation support is not influenced is overcome, the vertical pulling-resistant effect is achieved, and the pulling-resistant capacity is high. In conclusion, the anti-pulling double-layer double-pendulum friction pendulum seismic isolation support disclosed by the embodiment of the invention is strong in anti-pulling capacity and large in deformation capacity, ensures the horizontal seismic isolation effect, is simple in structure and convenient to manufacture, and reduces the cost.
According to one embodiment of the invention, a first friction slide rail is arranged on the bottom surface of the upper base, a second friction slide rail is arranged on the top surface of the transition base, and the length direction of the first friction slide rail and the length direction of the second friction slide rail are approximately in the left-right direction; the top surface and the bottom surface of the upper sliding block are respectively and correspondingly matched with the first friction sliding rail and the second friction sliding rail in a sliding manner;
a third friction slide rail is arranged on the bottom surface of the transition base, a fourth friction slide rail is arranged on the top surface of the lower base, and the length direction of the third friction slide rail and the length direction of the fourth friction slide rail are approximately in the front-back direction; and the top surface and the bottom surface of the lower sliding block are respectively and correspondingly matched with the third friction sliding rail and the fourth friction sliding rail in a sliding manner.
According to a further embodiment of the present invention, the first friction slide rail and the second friction slide rail are both in the shape of an arc having the same size and facing each other, and the third friction slide rail and the fourth friction slide rail are both in the shape of an arc having the same size and facing each other.
According to a still further embodiment of the present invention, the first sliding groove and the second sliding groove are both in the shape of an arc having the same size and facing each other, and the third sliding groove and the fourth sliding groove are both in the shape of an arc having the same size and facing each other.
According to a still further embodiment of the present invention, the first runner and the first friction sliding rail are coaxial, the second runner and the second friction sliding rail are coaxial, the third runner and the third friction sliding rail are coaxial, and the fourth runner and the fourth friction sliding rail are coaxial.
According to a further embodiment of the present invention, the extrados and the intrados of the first sliding chute are coaxial, the extrados and the intrados of the second sliding chute are coaxial, the extrados and the intrados of the third sliding chute are coaxial, and the extrados and the intrados of the fourth sliding chute are coaxial.
According to a still further embodiment of the present invention, the first anti-pull protrusion is in clearance fit with the first runner, the second anti-pull protrusion is in clearance fit with the second runner, the third anti-pull protrusion is in clearance fit with the third runner, and the fourth anti-pull protrusion is in clearance fit with the fourth runner.
According to some embodiments of the present invention, in a case where the maximum horizontal displacement occurs between the upper base and the lower base, a projected overlapping area of the upper slider and the lower slider is set As, a vertical pressure borne by the upper slider and the lower slider is p, and a maximum tonnage of a friction pendulum is T, the projected overlapping area of the upper slider and the lower slider satisfies the following formula:
As>T/p。
according to some embodiments of the present invention, assuming a design pullout resistance value of F, the first, second, third, and fourth pullout resistance protrusions all have a thickness of t, an inner diameter of r, and a radian of θ, the first, second, third, and fourth pullout resistance protrusions all have a cross-sectional area of (pi (r + t)2-πr2) Theta/2 pi; setting the shear strength as the tensile strength f of the steelt0.5 times, the single anti-pulling bulge shear design of the anti-pulling double-layer double-pendulum type friction pendulum vibration isolation support meets the following formula:
0.5ft×(π(r+t)2-πr2)θ/2π>F/2。
according to some embodiments of the invention, the upper pulling-resistant piece and the upper sliding block have the same movement track, and the lower pulling-resistant piece and the lower sliding block have the same movement track.
According to some embodiments of the invention, further comprising:
the upper connecting piece comprises a first upper connecting piece and a second upper connecting piece, the first upper connecting piece and the second upper connecting piece are both positioned between the bottom surface of the upper base and the top surface of the transition base, the first upper connecting piece is positioned between one of the two upper anti-pulling pieces and the upper sliding block, two ends of the first upper connecting piece are respectively connected with one of the two upper anti-pulling pieces and the upper sliding block, the second upper connecting piece is positioned between the other of the two upper anti-pulling pieces and the upper sliding block, and two ends of the second upper connecting piece are respectively connected with the other of the two upper anti-pulling pieces and the upper sliding block;
lower connecting piece, lower connecting piece includes connecting piece under first connecting piece and the second, first connecting piece under with the second connecting piece all is located the bottom surface of transition base with between the top surface of lower base, first connecting piece is located two in the resistance to plucking piece down the resistance to plucking piece with between the lower slider just the both ends of first connecting piece respectively with two in the resistance to plucking piece down the resistance to plucking piece with the lower slider links to each other, the second connecting piece is located two in the resistance to plucking piece down another resistance to plucking piece down with between the lower slider just the both ends of second connecting piece respectively with two in the resistance to plucking piece down the resistance to plucking piece with the lower slider links to each other.
According to a still further embodiment of the present invention, a dimension of the upper connection member in the up-down direction is smaller than a distance between the upper base and the transition base, and a dimension of the lower connection member in the up-down direction is smaller than a distance between the transition base and the lower base.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic perspective view of an anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing according to an embodiment of the invention.
FIG. 2 is a front view of the anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing in the embodiment of the invention.
FIG. 3 is a side view of the anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing in the embodiment of the invention.
FIG. 4 is a top view of the anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing in the embodiment of the invention.
Fig. 5 is a schematic cross-sectional view of an anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing according to an embodiment of the present invention, where the anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing is located in an elevation direction.
Fig. 6 is another schematic cross-sectional view of the anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing according to the embodiment of the present invention, wherein the anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing is located in a side view orientation.
Fig. 7 is a schematic perspective view of the anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing of the embodiment of the invention when sliding to a certain position.
Fig. 8 is a front view of the anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing of the embodiment of the invention when sliding to a certain position.
Fig. 9 is a side view of the anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing of the embodiment of the invention when sliding to a certain position.
Fig. 10 is a top view of the anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing of the embodiment of the invention when sliding to a certain position.
Fig. 11 is a schematic cross-sectional view of the anti-pulling double-layer double-pendulum type friction pendulum isolation bearing of the embodiment of the invention when sliding to a certain position, wherein the anti-pulling double-layer double-pendulum type friction pendulum isolation bearing is located in a side view orientation.
Reference numerals:
First sliding chute 101 and first friction sliding rail 102 of upper base 1
Fourth sliding groove 301 and fourth friction sliding rail 302 of lower base 3
First anti-pulling bulge 601 and second anti-pulling bulge 602 of upper anti-pulling piece 6
Lower anti-pulling part 7, third anti-pulling projection 701, fourth anti-pulling projection 702
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing 1000 according to the embodiment of the invention is described below with reference to fig. 1 to 11.
As shown in fig. 1 to 11, an anti-pulling double-layer double-pendulum friction pendulum seismic isolation bearing 1000 according to an embodiment of the present invention includes an upper base 1, a transition base 2, a lower base 3, an upper slider 4, a lower slider 5, an upper anti-pulling element 6, and a lower anti-pulling element 7, wherein a front side surface and a rear side surface of the upper base 1 are respectively provided with a first sliding groove 101, and a length direction of the first sliding groove 101 is substantially in a left-right direction; the transition base 2 is arranged below the upper base 1; the front side and the rear side of the transition base 2 are respectively provided with a second sliding chute 201, and the length direction of the second sliding chute 201 is approximately in the left-right direction; the left side surface and the right side surface of the transition base 2 are provided with third sliding chutes 202, and the length directions of the third sliding chutes 202 are approximately in the front-rear direction; the lower base 3 is arranged below the transition base 2, the left side surface and the right side surface of the lower base 3 are provided with fourth sliding chutes 301, and the length directions of the fourth sliding chutes 301 are approximately in the front-back direction; the upper sliding block 4 is arranged between the bottom surface of the upper base 1 and the top surface of the transition base 2, and the upper base 1, the upper sliding block 4 and the transition base 2 can generate relative friction translational sliding in the left-right direction; the lower sliding block 5 is arranged between the bottom surface of the transition base 2 and the top surface of the lower base 3, and the transition base 2, the lower sliding block 5 and the lower base 3 can generate relative friction translational sliding in the front-rear direction; the number of the upper anti-pulling parts 6 is two, the two upper anti-pulling parts 6 are respectively arranged on the front side and the rear side of the upper base 1 and the transition base 2, the upper ends of the two upper anti-pulling parts 6 are respectively provided with a first anti-pulling bulge 601, the lower ends of the two upper anti-pulling parts 6 are respectively provided with a second anti-pulling bulge 602, the first anti-pulling bulges 601 of the two upper anti-pulling parts 6 are respectively correspondingly and adaptively slidably clamped in the first sliding grooves 101 of the upper base 1, and the second anti-pulling bulges 602 of the two upper anti-pulling parts 6 are respectively correspondingly and adaptively slidably clamped in the second sliding grooves 201 of the transition base 2; the two upper pulling-resistant pieces 6 cannot fall off and can synchronously slide and rotate in the same direction with the upper sliding block 4; the number of the lower anti-pulling pieces 7 is two, the two lower anti-pulling pieces 7 are respectively arranged on the left side and the right side of the transition base 2 and the lower base 3, the upper ends of the two lower anti-pulling pieces 7 are respectively provided with a third anti-pulling bulge 701, the lower ends of the two lower anti-pulling pieces 7 are respectively provided with a fourth anti-pulling bulge 702, the third anti-pulling bulges 701 of the two lower anti-pulling pieces 7 are respectively correspondingly adapted to be slidably clamped in the third sliding groove 202 of the transition base 2, and the fourth anti-pulling bulges 702 of the two lower anti-pulling pieces 7 are respectively correspondingly adapted to be slidably clamped in the fourth sliding groove 301 of the lower base 3; the two lower pulling-resistant pieces 7 can not fall off and can synchronously slide and rotate in the same direction with the lower sliding block 5.
Specifically, the front side and the rear side of the upper base 1 are respectively provided with a first sliding chute 101, and the length direction of the first sliding chute 101 is approximately in the left-right direction; the transition base 2 is arranged below the upper base 1; the front side and the rear side of the transition base 2 are respectively provided with a second sliding chute 201, and the length direction of the second sliding chute 201 is approximately in the left-right direction; the left side surface and the right side surface of the transition base 2 are provided with third sliding chutes 202, and the length directions of the third sliding chutes 202 are approximately in the front-rear direction; the lower base 3 is arranged below the transition base 2, the left side surface and the right side surface of the lower base 3 are provided with fourth sliding grooves 301, and the length directions of the fourth sliding grooves 301 are approximately in the front-back direction. Specifically, the upper base 1 is used as the uppermost component of the anti-pulling double-layer double-pendulum friction pendulum seismic isolation bearing 1000 and is used for being directly connected with lower members (such as columns and walls) of a building, so that deformation and force applied to the seismic isolation bearing 1000 by an upper structure are transmitted; the transition support is used as a transition part between the upper base 1 and the lower base 3, the upper base 1 and the transition base 2 can generate relative friction translational sliding in the left-right direction, and the transition base 2 and the lower base 3 can generate relative friction translational sliding in the front-back direction, so that the vibration isolation support 1000 can slide in the left-right direction and the front-back direction; the lower base 3 is used as the lowest layer part of the anti-pulling double-layer double-pendulum friction pendulum seismic isolation support 1000 and is used for being fixed with a bottom layer foundation. Two first spouts 101 and two second spouts 201 one-to-one set up, two third spouts 202 and two fourth spouts 301 one-to-one set up, on the one hand can conveniently carry out the installation of resistance to plucking piece, on the other hand is owing to can be through first spout 101, second spout 201, third spout 202 and fourth spout 301 will go up resistance to plucking piece 6 and lower resistance to plucking piece 7 and fix at last base 1, the side of transition base 2 and lower base 3, from not influencing last base 1, transition base 2 and lower base 3 move on the horizontal direction, and then do not influence the shock insulation effect of shock insulation support 1000 on the horizontal direction.
The upper sliding block 4 is arranged between the bottom surface of the upper base 1 and the top surface of the transition base 2, and the upper base 1, the upper sliding block 4 and the transition base 2 can generate relative friction translational sliding in the left-right direction; the lower sliding block 5 is arranged between the bottom surface of the transition base 2 and the top surface of the lower base 3, and the transition base 2, the lower sliding block 5 and the lower base 3 can generate relative friction translational sliding in the front-back direction. It can be understood that the upper sliding block 4 is used for transmitting shearing force and axial force between the upper base 1 and the transition base 2, the lower sliding block 5 is used for transmitting shearing force and axial force between the transition base 2 and the lower base 3, and the vertical bearing effect of the vibration isolation support 1000 is guaranteed while the horizontal vibration isolation effect of the vibration isolation support 1000 is guaranteed.
Further, in order to enable the vibration isolation support 1000 to have a strong vertical bearing capacity under the condition of horizontal movement, the upper sliding block 4 is extended in the front-rear direction, and the lower sliding block 5 is extended in the left-right direction, so that the continuity of vertical force transmission is ensured.
The number of the upper anti-pulling parts 6 is two, the two upper anti-pulling parts 6 are respectively arranged on the front side and the rear side of the upper base 1 and the transition base 2, the upper ends of the two upper anti-pulling parts 6 are respectively provided with a first anti-pulling bulge 601, the lower ends of the two upper anti-pulling parts 6 are respectively provided with a second anti-pulling bulge 602, the first anti-pulling bulges 601 of the two upper anti-pulling parts 6 are respectively correspondingly and adaptively slidably clamped in the first sliding grooves 101 of the upper base 1, and the second anti-pulling bulges 602 of the two upper anti-pulling parts 6 are respectively correspondingly and adaptively slidably clamped in the second sliding grooves 201 of the transition base 2; the two upper pulling-resistant pieces 6 cannot fall off and can synchronously slide and rotate in the same direction with the upper sliding block 4; the number of the lower anti-pulling pieces 7 is two, the two lower anti-pulling pieces 7 are respectively arranged on the left side and the right side of the transition base 2 and the lower base 3, the upper ends of the two lower anti-pulling pieces 7 are respectively provided with a third anti-pulling bulge 701, the lower ends of the two lower anti-pulling pieces 7 are respectively provided with a fourth anti-pulling bulge 702, the third anti-pulling bulges 701 of the two lower anti-pulling pieces 7 are respectively correspondingly adapted to be slidably clamped in the third sliding groove 202 of the transition base 2, and the fourth anti-pulling bulges 702 of the two lower anti-pulling pieces 7 are respectively correspondingly adapted to be slidably clamped in the fourth sliding groove 301 of the lower base 3; the two lower pulling-resistant pieces 7 can not fall off and can synchronously slide and rotate in the same direction with the lower sliding block 5. It can be understood that the defect that the traditional double-pendulum friction pendulum support is difficult to resist drawing under the condition of not influencing the horizontal movement of the vibration-isolating support 1000 can be overcome and the vertical pulling-resisting effect can be achieved by correspondingly clamping the first pulling-resisting protrusion 601 in the first sliding groove 101, the second pulling-resisting protrusion 602 in the second sliding groove 201, the third pulling-resisting protrusion 701 in the third sliding groove 202 and the fourth pulling-resisting protrusion 702 in the fourth sliding groove 301; specifically, after the upper base 1, the transition base 2, the lower base 3, the upper slider 4 and the lower slider 5 are installed, the two upper pulling-resistant pieces 6 are correspondingly clamped in the two first sliding grooves 101 and the two second sliding grooves 201, respectively, the two lower pulling-resistant pieces 7 are correspondingly clamped in the two third sliding grooves 202 and the two fourth sliding grooves 301, respectively, and the protruding widths and heights of the first pulling-resistant protrusion 601, the second pulling-resistant protrusion 602, the third pulling-resistant protrusion 701 and the fourth pulling-resistant protrusion 702 are respectively matched with the first sliding grooves 101, the second sliding grooves 201, the third sliding grooves 202 and the fourth sliding grooves 301. In addition, by designing the projection widths and heights of the first anti-pull projection 601, the second anti-pull projection 602, the third anti-pull projection 701, and the fourth anti-pull projection 702, a high anti-pull capability can be effectively achieved.
It should be noted that the upper base 1, the transition base 2, the lower base 3, the upper pulling-resistant member 6, the lower pulling-resistant member 7, the upper slider 4 and the lower slider 5 may be made of steel or other materials with high strength, so as to ensure the strength of the seismic isolation bearing 1000, and when the seismic isolation device 1000 is pulled, the tensile action may be achieved.
The anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing 1000 according to the embodiment of the invention has the following advantages: firstly, two upper anti-pulling pieces 6 are correspondingly clamped in two first sliding grooves 101 and two second sliding grooves 201 respectively, and two lower anti-pulling pieces 7 are correspondingly clamped in two third sliding grooves 202 and two fourth sliding grooves 301 respectively, so that the defect that a traditional double-pendulum friction pendulum support is difficult to resist pulling can be overcome under the condition that the horizontal operation of the shock insulation support 1000 is not influenced, the vertical anti-pulling effect is achieved, and the anti-pulling capacity is strong; secondly, the shock insulation support 1000 has a simple structure, can effectively reduce the cost and has high industrial production efficiency; the third, through setting up base 1, transition base 2, lower base 3, go up slider 4 and lower slider 5 in order to form double pendulum formula friction pendulum, go up and to take place relative friction translation slip about between base 1 and the transition base 2, transition base 2 and lower base 3 can take place relative friction translation slip in the back and forth direction, the shock insulation deformability of four directions is big around the support 1000, guaranteed the shock insulation effect of shock insulation support 1000 on the horizontal direction from this, in addition, double pendulum structure can also reduce occupation space.
As shown in fig. 5 to 7 and 11, according to an embodiment of the present invention, a first friction sliding rail 102 is disposed on the bottom surface of the upper base 1, a second friction sliding rail 203 is disposed on the top surface of the transition base 2, and the length direction of the first friction sliding rail 102 and the length direction of the second friction sliding rail 203 are substantially in the left-right direction; the top surface and the bottom surface of the upper sliding block 4 are respectively and correspondingly matched with the first friction sliding rail 102 and the second friction sliding rail 203 in a sliding way; a third friction slide rail 204 is arranged on the bottom surface of the transition base 2, a fourth friction slide rail 302 is arranged on the top surface of the lower base 3, and the length direction of the third friction slide rail 204 and the length direction of the fourth friction slide rail 302 are approximately in the front-back direction; the top and bottom surfaces of the lower slider 5 are slidably engaged with the third friction slide 204 and the fourth friction slide 302, respectively. It is understood that the length direction of the first friction slide 102 and the length direction of the second friction slide 203 are substantially in the left-right direction, so that the upper slider 4 and the upper base 1 can be restricted from sliding only in the left-right direction, and the length direction of the third friction slide 204 and the length direction of the fourth friction slide 302 are substantially in the front-rear direction, so that the lower slider 5 and the lower base 3 can be restricted from sliding only in the front-rear direction.
According to a further embodiment of the present invention, the first friction sled 102 and the second friction sled 203 are both arc-shaped with the same size and opposite to each other, and the third friction sled 204 and the fourth friction sled 302 are both arc-shaped with the same size and opposite to each other. Specifically, when the upper base 1 and the transition base 2 translate relative to each other, the top surface of the upper sliding block 4 and the first friction sliding rail 102 can be adapted and attached in a relatively sliding manner, the bottom surface of the upper sliding block 4 and the second friction sliding rail 203 can be adapted and attached in a relatively sliding manner, the top surface of the upper sliding block 4 deflects towards the left side or the right side, and the bottom surface of the upper sliding block 4 deflects towards the opposite side; when the lower base 3 and the transition base 2 translate relatively to each other, the top surface of the lower slider 5 and the third friction slide 204 can be adapted and attached in a relatively sliding manner, the bottom surface of the lower slider 5 and the fourth friction slide 302 can be adapted and attached in a relatively sliding manner, the top surface of the lower slider 5 deflects to the front side or the rear side, the bottom surface of the lower slider 5 deflects to the opposite side, because the first friction slide 102 and the second friction slide 203 are both in the same arc shape and opposite to each other, the third friction slide 204 and the fourth friction slide 302 are both in the same arc shape and opposite to each other, the upper slider 4 and the lower slider 5 can incline to a certain degree when sliding, the upper slider 4 is used for transmitting the shearing force and the axial force between the upper base 1 and the transition base 2, and the lower slider 5 is used for transmitting the shearing force and the axial force between the transition base 2 and the lower base 3.
It should be noted that the radians of the first friction slide 102, the second friction slide 203, the third friction slide 204, and the fourth friction slide 302 determine the natural vibration period of the vibration-isolated support 1000. The period of the anti-pulling double-layer double-pendulum type friction pendulum seismic isolation bearing 1000 of the embodiment of the invention is the same as that of a common double-pendulum bearing.
According to a further embodiment of the present invention, the first sliding chute 101 and the second sliding chute 201 are both in the shape of an arc having the same size and facing each other, and the third sliding chute 202 and the fourth sliding chute 301 are both in the shape of an arc having the same size and facing each other. Therefore, the structure is reasonable, the two upper pulling-resistant pieces 6 can synchronously move in the same direction with the upper sliding block 4, and the two lower pulling-resistant pieces 7 can synchronously slide and rotate in the same direction with the lower sliding block 5.
According to a still further embodiment of the invention, the first runner 101 and the first friction sliding rail 102 are coaxial, the second runner 201 and the second friction sliding rail 203 are coaxial, the third runner 202 and the third friction sliding rail 204 are coaxial, and the fourth runner 301 and the fourth friction sliding rail 302 are coaxial. In this way, since the upper anti-pulling part 6 and the upper sliding block 4 both incline to a certain extent during movement, when the first sliding chute 101 and the first friction sliding rail 102 are coaxial, and the second sliding chute 201 and the second friction sliding rail 203 are coaxial, the inclination angles and the sliding tracks of the upper anti-pulling part 6 and the upper sliding block 4 are the same, and the upper anti-pulling part 6 does not hinder the upper sliding block 4 from normally moving; because the lower pulling-resistant part 7 and the lower sliding block 5 can incline to a certain degree during movement, when the third sliding groove 202 and the third friction sliding rail 204 are coaxial and the fourth sliding groove 301 and the fourth friction sliding rail 302 are coaxial, the inclination angles of the lower pulling-resistant part 7 and the lower sliding block 5 are the same and the sliding tracks are the same, and the lower pulling-resistant part 7 cannot block the lower sliding block 5 from normally moving.
It should be noted that the first anti-pulling protrusion 601 is coaxial with the first sliding chute 101, the second anti-pulling protrusion 602 is coaxial with the second sliding chute 201, the third anti-pulling protrusion 701 is coaxial with the third sliding chute 202, and the fourth anti-pulling protrusion 702 is coaxial with the fourth sliding chute 301.
According to a still further embodiment of the present invention, the extrados and intrados of the first runner 101 are coaxial, the extrados and intrados of the second runner 201 are coaxial, the extrados and intrados of the third runner 202 are coaxial, and the extrados and intrados of the fourth runner 301 are coaxial. Thus, the first anti-pulling protrusion 601 can be tightly attached to the outer arc surface and the inner arc surface of the first sliding groove 101, the first anti-pulling protrusion 601 can smoothly slide along the first sliding groove 101, the second anti-pulling protrusion 602 can be tightly attached to the outer arc surface and the inner arc surface of the second sliding groove 201, the second anti-pulling protrusion 602 can smoothly slide along the second sliding groove 201, the third anti-pulling protrusion 701 can be tightly attached to the outer arc surface and the inner arc surface of the third sliding groove 202, the third anti-pulling protrusion 701 can smoothly slide along the third sliding groove 202, the fourth anti-pulling protrusion 702 can be tightly attached to the outer arc surface and the inner arc surface of the fourth sliding groove 301, and the fourth anti-pulling protrusion 702 can smoothly slide along the fourth sliding groove 301.
According to a further embodiment of the present invention, the first anti-pulling projection 601 is in clearance fit with the first sliding slot 101, the second anti-pulling projection 602 is in clearance fit with the second sliding slot 201, the third anti-pulling projection 701 is in clearance fit with the third sliding slot 202, and the fourth anti-pulling projection 702 is in clearance fit with the fourth sliding slot 301. It can be understood that, considering the assembly error and the machining error between the first anti-pulling protrusion 601 and the first sliding chute 101, between the second anti-pulling protrusion 602 and the second sliding chute 201, between the third anti-pulling protrusion 701 and the third sliding chute 202, and between the fourth anti-pulling protrusion 702 and the fourth sliding chute 301, the first anti-pulling protrusion 601 is in clearance fit with the first sliding chute 101, the second anti-pulling protrusion 602 is in clearance fit with the second sliding chute 201, the third anti-pulling protrusion 701 is in clearance fit with the third sliding chute 202, and the fourth anti-pulling protrusion 702 is in clearance fit with the fourth sliding chute 301, for example, the first anti-pulling protrusion 601 and the first sliding chute 101 may have a clearance of about 1mm, the second anti-pulling protrusion 602 and the second sliding chute 201 may have a clearance of about 1mm, the third anti-pulling protrusion 701 and the third sliding chute 202 may have a clearance of about 1mm, the fourth anti-pulling protrusion 702 and the fourth sliding chute 301 may have a clearance of about 1mm, thereby enabling assembly.
According to some embodiments of the present invention, in the case of the maximum horizontal displacement of the upper base 1 and the lower base 3, the projected overlapping area of the upper slider 4 and the lower slider 5 is set As, the vertical pressure borne by the upper slider 4 and the lower slider 5 is p, and the maximum tonnage of the friction pendulum is T, then the projected overlapping area of the upper slider 4 and the lower slider 5 satisfies the following formula:
As>T/p。
therefore, under the condition that the maximum horizontal displacement occurs between the upper base 1 and the lower base 3, the reliability of the shock insulation support 1000 can be ensured only if the vertical pressure born on the projection superposition area of the upper sliding block 4 and the lower sliding block 5 cannot be larger than p, and when As is larger than T/p, the vertical pressure born by the upper sliding block 4 and the lower sliding block 5 is within a reasonable range, so that the direct transmission of vertical force can be ensured.
Note that T is a force applied by the upper member to the seismic mount 1000.
According to some embodiments of the present invention, assuming a design pullout resistance value of F, the first, second, third, and fourth pullout resistance protrusions 601, 602, 701, 702 all have a thickness of t, an inner diameter of r, and a radian of θ, the first, second, third, and fourth pullout resistance protrusions 601, 602, 701, 702 all have a cross-sectional area of (pi (r + t))2-πr2) Theta/2 pi; setting the shear strength as the tensile strength f of the steelt0.5 times, the single anti-pulling bulge shear design of the anti-pulling double-layer double-pendulum type friction pendulum vibration isolation bearing 1000 meets the following formula:
0.5ft×(π(r+t)2-πr2)θ/2π>F/2。
it can be understood that the first sliding groove 101 and the second sliding groove 201 are both in the shape of an arc with the same size and opposite to each other, and the third sliding groove 202 and the fourth sliding groove 301 are both in the shape of an arc with the same size and opposite to each other, so that the first sliding groove 101, the second sliding groove 201, the third sliding groove 202 and the fourth sliding groove 301 are subjected to a shearing force, and the tensile strength of the steel material is ftShear strength of steel material of 0.5ftThe cross-sectional areas of the first anti-pulling projection 601, the second anti-pulling projection 602, the third anti-pulling projection 701 and the fourth anti-pulling projection 702 are all (pi (r + t)2-πr2) Theta/2 pi, due to the upper base 1 andtwo uplift protrusions are arranged between the transition bases 2 and the lower base 3, and the uplift protrusions pass through a formula of 0.5ft×(π(r+t)2-πr2)θ/2π>F/2, a design withdrawal resistance value F can be obtained.
According to some embodiments of the invention, the upper pulling-resistant member 6 has the same trajectory as the upper slider 4 and the lower pulling-resistant member 7 has the same trajectory as the lower slider 5. It can be understood that when the upper pulling-resistant part 6 and the upper sliding block 4 have the same movement track, the upper pulling-resistant part 6 does not affect the horizontal movement of the upper sliding block 4, and when the lower pulling-resistant part 7 and the lower sliding block 5 have the same movement track, the lower pulling-resistant part 7 does not affect the horizontal movement of the lower sliding block 5.
According to some embodiments of the invention, further comprising:
the upper connecting piece 8 comprises a first upper connecting piece 801 and a second upper connecting piece 802, the first upper connecting piece 801 and the second upper connecting piece 802 are both positioned between the bottom surface of the upper base 1 and the top surface of the transition base 2, the first upper connecting piece 801 is positioned between one upper anti-pulling piece 6 of the two upper anti-pulling pieces 6 and the upper sliding block 4, two ends of the first upper connecting piece 801 are respectively connected with one upper anti-pulling piece 6 of the two upper anti-pulling pieces 6 and the upper sliding block 4, the second upper connecting piece 802 is positioned between the other upper anti-pulling piece 6 of the two upper anti-pulling pieces 6 and the upper sliding block 4, and two ends of the second upper connecting piece 802 are respectively connected with the other upper anti-pulling piece 6 of the two upper anti-pulling pieces 6 and the upper sliding block 4;
the lower connecting piece 9, the lower connecting piece 9 includes a first lower connecting piece 901 and a second lower connecting piece 902, the first lower connecting piece 901 and the second lower connecting piece 902 are both located between the bottom surface of the transition base 2 and the top surface of the lower base 3, the first lower connecting piece 901 is located between one lower pulling-resistant piece 7 of the two lower pulling-resistant pieces 7 and the lower slider 5, both ends of the first lower connecting piece 901 are respectively connected with one lower pulling-resistant piece 7 of the two lower pulling-resistant pieces 7 and the lower slider 5, the second lower connecting piece 902 is located between the other lower pulling-resistant piece 7 of the two lower pulling-resistant pieces 7 and the lower slider 5, and both ends of the second lower connecting piece 902 are respectively connected with the other lower pulling-resistant piece 7 of the two lower pulling-resistant pieces 7 and the lower slider 5.
It can be understood that the first upper connecting member 801 and the second upper connecting member 802 respectively connect the two upper pulling-resistant members 6 with the upper sliding block 4, so as to provide lateral support between the two upper pulling-resistant members 6, prevent the two upper pulling-resistant members 6 from falling off, and simultaneously ensure the two upper pulling-resistant members 6 and the upper sliding block 4 to move synchronously; the first lower connecting piece 901 and the second lower connecting piece 902 respectively connect the two lower pulling-resistant pieces 7 with the lower slider 5, so as to provide lateral support between the two lower pulling-resistant pieces 7, prevent the two lower pulling-resistant pieces 7 from falling off, and simultaneously ensure the two lower pulling-resistant pieces 7 and the lower slider 5 to move synchronously.
According to a still further embodiment of the present invention, the upper link 8 has a dimension in the up-down direction smaller than the interval between the upper base 1 and the transition base 2, and the lower link 9 has a dimension in the up-down direction smaller than the interval between the transition base 2 and the lower base 3. Thus, the upper connecting piece 8 can move left and right between the upper base 1 and the transition base 2 without obstructing the movement of the upper sliding block 4, and the lower connecting piece 9 can move back and forth between the transition base 2 and the lower base 3 without obstructing the movement of the lower sliding block 5.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (12)
1. The utility model provides a double-deck double pendulum formula friction pendulum isolation bearing of resistance to plucking which characterized in that includes:
the front side surface and the rear side surface of the upper base are respectively provided with a first sliding chute, and the length direction of the first sliding chutes is approximately positioned in the left-right direction;
the transition base is arranged below the upper base; the front side surface and the rear side surface of the transition base are respectively provided with a second sliding chute, and the length direction of the second sliding chutes is approximately positioned in the left-right direction; third sliding grooves are formed in the left side surface and the right side surface of the transition base, and the length direction of each third sliding groove is approximately in the front-back direction;
the lower base is arranged below the transition base, fourth sliding grooves are formed in the left side surface and the right side surface of the lower base, and the length direction of each fourth sliding groove is approximately in the front-back direction;
the upper sliding block is arranged between the bottom surface of the upper base and the top surface of the transition base, and the upper base, the upper sliding block and the transition base can generate relative friction translational sliding in the left-right direction;
the lower sliding block is arranged between the bottom surface of the transition base and the top surface of the lower base, and the transition base, the lower sliding block and the lower base can generate relative friction translational sliding in the front-rear direction between every two of the transition base, the lower sliding block and the lower base;
two upper anti-pulling pieces are arranged, the two upper anti-pulling pieces are respectively arranged on the front side and the rear side of the upper base and the transition base, the upper ends of the two upper anti-pulling pieces are respectively provided with a first anti-pulling bulge, the lower ends of the two upper anti-pulling pieces are respectively provided with a second anti-pulling bulge, the first anti-pulling bulges of the two upper anti-pulling pieces are respectively correspondingly adapted to be slidably clamped in the first sliding grooves of the upper base, and the second anti-pulling bulges of the two upper anti-pulling pieces are respectively correspondingly adapted to be slidably clamped in the second sliding grooves of the transition base; the two upper anti-pulling pieces cannot fall off and can synchronously slide and rotate in the same direction with the upper sliding block;
two lower anti-pulling parts are arranged, the two lower anti-pulling parts are respectively arranged on the left side and the right side of the transition base and the lower base, the upper ends of the two lower anti-pulling parts are respectively provided with a third anti-pulling bulge, the lower ends of the two lower anti-pulling parts are respectively provided with a fourth anti-pulling bulge, the third anti-pulling bulges of the two lower anti-pulling parts are respectively correspondingly adapted and slidably clamped in the third sliding groove of the transition base, and the fourth anti-pulling bulges of the two lower anti-pulling parts are respectively correspondingly adapted and slidably clamped in the fourth sliding groove of the lower base; two the resistance to plucking piece can not drop and can with lower sliding block synchronous syntropy slides and rotates down.
2. The anti-pulling double-layer double-pendulum friction pendulum seismic isolation bearing according to claim 1, wherein a first friction sliding rail is arranged on the bottom surface of the upper base, a second friction sliding rail is arranged on the top surface of the transition base, and the length direction of the first friction sliding rail and the length direction of the second friction sliding rail are approximately in the left-right direction; the top surface and the bottom surface of the upper sliding block are respectively and correspondingly matched with the first friction sliding rail and the second friction sliding rail in a sliding manner;
a third friction slide rail is arranged on the bottom surface of the transition base, a fourth friction slide rail is arranged on the top surface of the lower base, and the length direction of the third friction slide rail and the length direction of the fourth friction slide rail are approximately in the front-back direction; and the top surface and the bottom surface of the lower sliding block are respectively and correspondingly matched with the third friction sliding rail and the fourth friction sliding rail in a sliding manner.
3. The anti-pulling double-layer double-pendulum friction pendulum seismic isolation bearing according to claim 2, wherein the first friction slide rail and the second friction slide rail are both arcs of the same size and opposite to each other, and the third friction slide rail and the fourth friction slide rail are both arcs of the same size and opposite to each other.
4. The anti-pulling double-layer double-pendulum friction pendulum seismic isolation bearing according to claim 3, wherein the first sliding groove and the second sliding groove are both in the shape of arcs with the same size and opposite to each other, and the third sliding groove and the fourth sliding groove are both in the shape of arcs with the same size and opposite to each other.
5. The anti-pulling double-layer double-pendulum friction pendulum seismic isolation bearing according to claim 4, wherein the first sliding groove is coaxial with the first friction sliding rail, the second sliding groove is coaxial with the second friction sliding rail, the third sliding groove is coaxial with the third friction sliding rail, and the fourth sliding groove is coaxial with the fourth friction sliding rail.
6. The anti-pulling double-layer double-pendulum friction pendulum seismic isolation bearing according to claim 5, wherein the outer arc surface and the inner arc surface of the first sliding chute are coaxial, the outer arc surface and the inner arc surface of the second sliding chute are coaxial, the outer arc surface and the inner arc surface of the third sliding chute are coaxial, and the outer arc surface and the inner arc surface of the fourth sliding chute are coaxial.
7. The anti-pulling double-layer double-pendulum friction pendulum seismic isolation bearing of claim 6, wherein the first anti-pulling protrusion is in clearance fit with the first sliding groove, the second anti-pulling protrusion is in clearance fit with the second sliding groove, the third anti-pulling protrusion is in clearance fit with the third sliding groove, and the fourth anti-pulling protrusion is in clearance fit with the fourth sliding groove.
8. The anti-pulling double-layer double-pendulum friction pendulum seismic isolation bearing according to any one of claims 4 to 7, wherein under the condition of maximum horizontal displacement between the upper base and the lower base, the projected overlapping area of the upper slider and the lower slider is set As, the borne vertical pressure of the upper slider and the lower slider is p, and the maximum tonnage of the friction pendulum is T, then the projected overlapping area of the upper slider and the lower slider satisfies the following formula:
As>T/p。
9. the anti-pulling double-layer double-pendulum friction pendulum seismic isolation bearing according to any one of claims 4 to 7, wherein a design value of anti-pulling force is setF, the thickness of the first anti-pulling bulge, the thickness of the second anti-pulling bulge, the thickness of the third anti-pulling bulge and the thickness of the fourth anti-pulling bulge are all t, the inner diameter is r, the radian is theta, and the cross-sectional areas of the first anti-pulling bulge, the second anti-pulling bulge, the thickness of the third anti-pulling bulge and the cross-sectional area of the fourth anti-pulling bulge are all (pi (r + t)2-πr2) Theta/2 pi; setting the shear strength as the tensile strength f of the steelt0.5 times, the single anti-pulling bulge shear design of the anti-pulling double-layer double-pendulum type friction pendulum vibration isolation support meets the following formula:
0.5ft×(π(r+t)2-πr2)θ/2π>F/2。
10. the anti-pulling double-layer double-pendulum friction pendulum seismic isolation bearing according to any one of claims 1 to 6, wherein the upper anti-pulling element and the upper sliding block have the same motion trajectory, and the lower anti-pulling element and the lower sliding block have the same motion trajectory.
11. The anti-pulling double-layer double-pendulum friction pendulum seismic isolation bearing according to any one of claims 1 to 6, further comprising:
the upper connecting piece comprises a first upper connecting piece and a second upper connecting piece, the first upper connecting piece and the second upper connecting piece are both positioned between the bottom surface of the upper base and the top surface of the transition base, the first upper connecting piece is positioned between one of the two upper anti-pulling pieces and the upper sliding block, two ends of the first upper connecting piece are respectively connected with one of the two upper anti-pulling pieces and the upper sliding block, the second upper connecting piece is positioned between the other of the two upper anti-pulling pieces and the upper sliding block, and two ends of the second upper connecting piece are respectively connected with the other of the two upper anti-pulling pieces and the upper sliding block;
lower connecting piece, lower connecting piece includes connecting piece under first connecting piece and the second, first connecting piece under with the second connecting piece all is located the bottom surface of transition base with between the top surface of lower base, first connecting piece is located two in the resistance to plucking piece down the resistance to plucking piece with between the lower slider just the both ends of first connecting piece respectively with two in the resistance to plucking piece down the resistance to plucking piece with the lower slider links to each other, the second connecting piece is located two in the resistance to plucking piece down another resistance to plucking piece down with between the lower slider just the both ends of second connecting piece respectively with two in the resistance to plucking piece down the resistance to plucking piece with the lower slider links to each other.
12. The anti-pulling double-layer double-pendulum friction pendulum seismic isolation bearing of claim 11, wherein a dimension of the upper connecting member in a vertical direction is smaller than a distance between the upper base and the transition base, and a dimension of the lower connecting member in the vertical direction is smaller than a distance between the transition base and the lower base.
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