CN115404767A - Self-resetting anti-pulling type three-dimensional seismic mitigation and isolation support and manufacturing method thereof - Google Patents
Self-resetting anti-pulling type three-dimensional seismic mitigation and isolation support and manufacturing method thereof Download PDFInfo
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- CN115404767A CN115404767A CN202211258844.7A CN202211258844A CN115404767A CN 115404767 A CN115404767 A CN 115404767A CN 202211258844 A CN202211258844 A CN 202211258844A CN 115404767 A CN115404767 A CN 115404767A
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- 238000002955 isolation Methods 0.000 title claims abstract description 121
- 230000000116 mitigating effect Effects 0.000 title claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 230000009467 reduction Effects 0.000 claims abstract description 36
- 238000001125 extrusion Methods 0.000 claims description 45
- 229910001220 stainless steel Inorganic materials 0.000 claims description 30
- 239000010935 stainless steel Substances 0.000 claims description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 29
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- 230000033001 locomotion Effects 0.000 claims description 3
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- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 230000035939 shock Effects 0.000 description 19
- 238000009434 installation Methods 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
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- 241001330002 Bambuseae Species 0.000 description 1
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- 239000011425 bamboo Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
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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
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- 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
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Abstract
The invention discloses a self-resettable anti-pulling type three-dimensional seismic mitigation and isolation support and a manufacturing method thereof, and belongs to the technical field of seismic isolation of building bridges. When the earthquake is acted horizontally, the earthquake energy is consumed through horizontal friction energy consumption and shear deformation and horizontal restoration is provided, and when the earthquake is acted vertically, the earthquake is consumed through lead body yielding energy consumption and vertical friction energy consumption and vertical restoration is provided. The horizontal seismic isolation and reduction assembly and the vertical seismic isolation and reduction assembly are mutually independent, have definite function division and have obvious effects on horizontal seismic isolation and reduction; meanwhile, the overall height is reduced, the pulling resistance is high, and the overall stability and durability are improved.
Description
Technical Field
The invention belongs to the technical field of building and bridge shock insulation, and particularly relates to a self-resetting anti-pulling three-dimensional shock absorption and isolation support and a manufacturing method thereof.
Background
The seismic isolation technology is realized by arranging a seismic isolation layer between a foundation and an upper structure, wherein the seismic isolation layer consists of a seismic isolation support and energy dissipation elements, can effectively prevent seismic energy from being transmitted to the upper structure, can prolong the self-vibration period of the upper structure, reduces the resonance effect, and can consume most of seismic energy by using the energy dissipation elements, so that the structural response is reduced, and the structure is prevented from being damaged in the earthquake.
The three-dimensional seismic isolation and reduction support effectively combines a horizontal seismic isolation and reduction mechanism and a vertical seismic isolation and reduction principle, and has obvious superiority in the aspect of technical effect, so that the three-dimensional seismic isolation and reduction support is a seismic isolation and reduction device which is widely researched at present. The existing three-dimensional seismic mitigation and isolation support mainly has the following two forms: monolithic and composite. The integrated type uses a single component to simultaneously isolate horizontal and vertical seismic motions, such as a three-dimensional seismic isolation pier, a thick rubber laminated three-dimensional seismic isolation device and the like; in the combined type, independent shock absorption devices are used for bearing shock absorption and isolation functions in different directions, such as a lead core disc spring three-dimensional shock absorption support, an inclined rotating three-dimensional shock absorption support, a three-dimensional shock absorption and isolation device formed by combining an air spring and a rubber support and the like.
Realize simultaneously at present that the level subtracts isolation bearing less with vertical subtracting isolation bearing, and use the combination formula to give first place to, when vertical subtracting isolation subassembly and the level subtract isolation subassembly and adopt the connected mode of establishing ties, often lead to the support overall height higher, and support itself does not possess resistance to plucking reset function, leads to the phenomenon of toppling to appear in the building under the earthquake effect. When the vertical seismic isolation and reduction assembly and the horizontal seismic isolation and reduction assembly are connected in parallel, the horizontal seismic isolation and the vertical seismic isolation and reduction are not influenced mutually by a complex decoupling structure, and because the vertical rigidity requirement of the building structure is in conflict with the vertical seismic isolation under the action of an earthquake, most of the existing three-dimensional seismic isolation and reduction supports have smaller bearing capacity and are not suitable for high-rise building structures and bridge structures. Therefore, the research on the low-height three-way seismic mitigation and isolation support which has the advantages of pulling resistance, strong energy consumption capability, strong bearing capability, good durability, self-resetting and mutually independent functions of all components is urgently needed.
Disclosure of Invention
The invention aims to provide a self-resetting anti-pulling type three-dimensional seismic mitigation and isolation bearing and a manufacturing method thereof, and aims to solve the technical problems that the seismic mitigation and isolation bearing in the prior art does not have an anti-pulling resetting function and is small in bearing capacity.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a self-resettable anti-pulling type three-dimensional seismic mitigation and isolation support comprises an upper connecting plate and a lower connecting plate which are connected with an upper component and a lower component of a structure to be damped, wherein a vertical sleeve is arranged between the upper connecting plate and the lower connecting plate, a middle connecting plate is horizontally fixed in the vertical sleeve, a horizontal seismic mitigation and isolation assembly is arranged between the upper connecting plate and the middle connecting plate and used for realizing horizontal seismic mitigation and isolation and horizontal resetting, and a vertical seismic mitigation and isolation assembly is arranged between the middle connecting plate and the lower connecting plate and used for realizing vertical seismic mitigation and isolation and vertical resetting; the vertical sleeve is connected with the upper connecting plate through the horizontal seismic isolation and reduction assembly and connected with the lower connecting plate through the vertical seismic isolation and reduction assembly.
Preferably, the horizontal seismic isolation and reduction assembly comprises a stainless steel sliding block, a friction plate and a plurality of rubber pads, the friction plate is arranged on the upper surface of the middle connecting plate and arranged inside the vertical sleeve, the stainless steel sliding block is arranged between the friction plate and the upper connecting plate, a circle of horizontal convex eaves are arranged on the outer side of the vertical sleeve, and the plurality of rubber pads are arranged between the convex eaves and the upper connecting plate at intervals.
Preferably, the rubber pad includes rubber support, upper cushion block and lower cushion block, the upper cushion block is fixed in on the lower surface of upper junction plate, the lower cushion block is fixed in vertical telescopic protruding eaves upper surface, rubber support sets up between upper cushion block and lower cushion block.
Preferably, a plurality of stiffening plates are arranged at intervals around the vertical sleeve, and the stiffening plates and the rubber pads are arranged at intervals; the vertical edge of the stiffening plate is fixed on the outer wall of the vertical sleeve, and the horizontal edge of the bottom of the stiffening plate is fixed on the upper surface of the convex eaves.
Preferably, the vertical seismic mitigation and isolation assembly comprises a lead extrusion damper, an internal high-strength ring spring group, a vertical stop block, a lower steel sleeve, a cover plate and an external high-strength ring spring group outside the cover plate, the lower end of the lower steel sleeve is fixed on a lower connecting plate, the upper part of the lower steel sleeve is connected with the lower end of a vertical sleeve, the cover plate is an annular plate, the outer edge of the cover plate is connected with the upper end of the vertical sleeve, and the inner side edge of the cover plate is inserted into a stainless steel sliding block; the upper end of the cylindrical vertical stop block is fixed on the lower surface of the middle connecting plate, and the lead extrusion damper is arranged between the middle connecting plate and the lower connecting plate and is arranged on the inner side of the vertical stop block; the internal high-strength ring spring group surrounds the outside of the lead extrusion damper and is arranged between the vertical stop block and the lower connecting plate; the lower surface of the convex eaves of the vertical sleeve is provided with a guide rod, the lower connecting plate is provided with a guide hole matched with the guide rod, and the external high-strength ring spring group is sleeved outside the guide rod and arranged between the convex eaves of the vertical sleeve and the lower connecting plate.
Preferably, the lead extrusion damper comprises an inner blocking cylinder, an extrusion rod, a lead block, an outer blocking cylinder and a middle plate, the outer blocking cylinder is a cylinder with an open bottom, the lower end of the outer blocking cylinder is fixed on the lower connecting plate, and the top of the outer blocking cylinder is provided with a through hole matched with the extrusion rod; the inner retaining cylinder is a pipe body with an upper opening and a lower opening, the inner retaining cylinder is arranged at the bottom of the inner side of the outer retaining cylinder and is fixed on the upper surface of the lower connecting plate, and an inner hole of the inner retaining cylinder can be in sliding fit with the extrusion rod; the middle part of the extrusion rod is provided with a spherical bulge, the diameter of the bulge is larger than that of the through hole at the top of the outer baffle cylinder, the lower end of the extrusion rod is inserted into the opening at the upper end of the inner baffle cylinder, the upper end of the extrusion rod penetrates through the outer baffle cylinder and then is connected with the middle plate, and the middle plate is connected with the lower surface of the middle connecting plate; the lead block is filled in the space between the inner blocking barrel, the extrusion rod and the outer blocking barrel.
Preferably, a plurality of vertical elongated holes are formed in the upper end of the lower steel sleeve at intervals, a plurality of mounting holes are correspondingly formed in the cylinder wall of the lower end of the vertical sleeve, high-strength bolts penetrate through the elongated holes and the mounting holes to fixedly connect the vertical sleeve and the lower steel sleeve, and the high-strength bolts are arranged below the convex eaves; and a damping material is coated on a matching surface between the lower steel sleeve and the vertical sleeve.
Preferably, the peripheral side wall of the stainless steel sliding block is provided with an annular groove, and the bottom of the annular groove and the inner side edge of the cover plate are provided with an annular gap.
Preferably, the upper end of the vertical sleeve is provided with a protruding mounting table, and the mounting table is fixedly connected with the outer side edge of the cover plate through a bolt.
The invention also provides a manufacturing method of the self-resettable anti-pulling three-dimensional seismic mitigation and isolation support, which comprises the following steps of:
assembling the three-way seismic mitigation and isolation support;
the method comprises the following steps: the lower end of the inner retaining cylinder is welded and fixed on the lower connecting plate, then an extrusion rod, a lead block and an outer retaining cylinder are sequentially installed, the lower end of the outer retaining cylinder is welded and fixed on the lower connecting plate, the middle plate is welded and fixed on the top of the extrusion rod, and the lower end of the lower steel sleeve is welded and fixed on the lower connecting plate;
step two: the stiffening plate is fixedly welded on the outer side of the vertical sleeve, the upper end of the vertical stop block is fixedly welded on the intermediate connecting plate, the intermediate connecting plate is fixedly welded on the inner wall of the vertical sleeve, and the intermediate connecting plate and the vertical stop block are both arranged on the inner side of the vertical sleeve; welding a guide rod to the bottom of a convex eave of the vertical sleeve, and sleeving an external high-strength ring spring group on the guide rod;
step three: firstly, an internal high-strength ring spring group is installed around the outer blocking cylinder, and then the guide rod assembled in the second step penetrates through the guide hole in the middle lower connecting plate in the first step; fixedly connecting the vertical sleeve with the lower steel sleeve by using a high-strength bolt, and fixedly connecting the middle connecting plate with the middle plate by using a bolt;
step four: placing a friction plate on the middle connecting plate, then placing a stainless steel sliding block on the friction plate, wherein the circle centers of the stainless steel sliding block, the friction plate and the middle connecting plate are arranged, then placing a cover plate on the upper part of the vertical sleeve, and connecting and fixing the outer edge of the cover plate with the vertical sleeve through a bolt;
step five: the upper cushion block is fixedly connected with the top surface of the rubber support, the lower cushion block is fixedly connected with the bottom of the rubber support, the lower cushion block is fixedly welded with the convex eaves on the outer side of the vertical sleeve, then the stainless steel sliding block is fixed on the upper connecting plate, and the upper cushion block is fixedly welded with the upper connecting plate; assembling the three-way seismic mitigation and isolation support;
and (II) connecting the manufactured three-way seismic mitigation and isolation support with a lower component of a to-be-damped structure through a bolt, and arranging a preformed hole matched with the guide rod on the lower component of the to-be-damped structure to provide a space for vertical movement of the guide rod.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, when the self-resettable anti-pulling type three-dimensional seismic mitigation and isolation support is acted by a horizontal earthquake, the horizontal resetting is provided while the earthquake energy is consumed through horizontal friction energy consumption and shearing deformation, and then the horizontal seismic mitigation and isolation is completed; when the earthquake-proof device is acted by a vertical earthquake, the vertical reset is provided while the energy is consumed through lead body yielding and vertical friction. Compared with the existing three-dimensional shock isolation support, the three-dimensional shock isolation support has the advantages of strong pulling resistance, good self-resetting performance and low height, the horizontal shock isolation assembly and the vertical shock isolation assembly are independent from each other, the component functions are clear, the respective shock isolation and reduction capabilities can be fully exerted, and the horizontal shock isolation and reduction effect and the vertical shock isolation effect are obvious; meanwhile, the overall height of the three-way shock absorption and isolation support can be reduced by adopting a vertical arrangement mode of a friction plate, a rubber support and a vertical sleeve for horizontal shock absorption and isolation, so that the overall stability is improved; the connection of the cover plate and the vertical sleeve enables the three-way seismic mitigation and isolation support to have good anti-pulling capacity.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram of a self-resettable anti-pulling three-way seismic mitigation and isolation bearing provided by an embodiment of the invention;
FIG. 2 is a front view of the self-resettable anti-pulling three-way seismic mitigation and isolation bearing in FIG. 1;
FIG. 3 is a top view of the self-resettable three-way seismic mitigation and isolation bearing of FIG. 2;
FIG. 4 isbase:Sub>A sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
FIG. 6 is an external view of the vertical sleeve of FIG. 4;
FIG. 7 is an external view of the lower steel casing of FIG. 4;
FIG. 8 is a structural diagram of the three-way seismic mitigation and isolation bearing after installation in the first step;
FIG. 9 is a structural diagram of the three-way seismic mitigation and isolation bearing after installation in the second step;
FIG. 10 is a structural diagram after installation in the third step in the process of installing the three-way seismic mitigation and isolation support;
FIG. 11 is a structural diagram after installation of a step four in the process of installing the three-way seismic mitigation and isolation support;
FIG. 12 is a diagram showing a state of the three-way seismic mitigation and absorption support after being installed;
in the figure: 00. a lower member, 0-1, a preformed hole; 1. an upper connecting plate; 2-1, a lower connecting plate, 2-2 and a guide hole; 3. an intermediate connection plate; 4. a stainless steel slider; 5-1, a rubber support, 5-2 and an upper cushion block; 5-3, a lower cushion block; 6. a friction plate; 7. a cover plate; 8-1 parts of vertical sleeves, 8-2 parts of stiffening plates, 8-3 parts of convex eaves, 8-4 parts of mounting tables; 9. an outer high-strength ring spring set; 10. a guide bar; 11. An inner high-strength ring spring set; 12-1 parts of inner retaining cylinder, 12-2 parts of extrusion rod, 12-3 parts of lead block, 12-4 parts of outer retaining cylinder, 12-5 parts of middle plate; 13. a vertical stop block; 14-1, a lower steel sleeve, 14-2 and a square friction hole; 15. high-strength bolt.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the self-resettable anti-pulling type three-dimensional seismic mitigation and isolation support provided by the invention comprises an upper connecting plate 1 and a lower connecting plate 2-1 which are connected with an upper component and a lower component 00 of a structure to be damped, wherein a vertical sleeve 8-1 is arranged between the upper connecting plate 1 and the lower connecting plate 2-1, a middle connecting plate 3 is horizontally fixed inside the vertical sleeve 8-1, a horizontal seismic mitigation and isolation assembly is arranged between the upper connecting plate 1 and the middle connecting plate 3 and used for realizing horizontal seismic mitigation and isolation and horizontal resetting, and a vertical seismic mitigation and isolation assembly is arranged between the middle connecting plate 3 and the lower connecting plate 2-1 and used for realizing vertical seismic mitigation and isolation and vertical resetting; the vertical sleeve 8-1 is connected with the upper connecting plate 1 through the horizontal seismic isolation and reduction assembly and connected with the lower connecting plate 2-1 through the vertical seismic isolation and reduction assembly. Horizontal energy consumption is realized and horizontal reset is provided through the horizontal seismic isolation and reduction assembly, vertical energy consumption is realized and vertical reset is provided through the vertical seismic isolation and reduction assembly, and then horizontal seismic isolation and vertical seismic isolation are accomplished.
In the practical embodiment of the invention, as shown in fig. 4, the horizontal seismic isolation and reduction assembly comprises a stainless steel sliding block 4, a friction plate 6 and a plurality of rubber pads, wherein the friction plate 6 is arranged on the upper surface of the middle connecting plate 3 and is arranged inside the vertical sleeve 8-1, the stainless steel sliding block 4 is arranged between the friction plate 6 and the upper connecting plate 1, a circle of horizontal protruding eaves 8-3 is arranged on the outer side of the vertical sleeve 8-1, and the plurality of rubber pads are uniformly distributed between the protruding eaves 8-3 and the upper connecting plate 1 at intervals. The rubber pad comprises a rubber support 5-1, an upper cushion block 5-2 and a lower cushion block 5-3, the upper cushion block 5-2 is fixed on the lower surface of the upper connecting plate 1, the lower cushion block 5-3 is fixed on the upper surface of a convex eave 8-3 of the vertical sleeve 8-1, and the rubber support 5-1 is arranged between the upper cushion block 5-2 and the lower cushion block 5-3. The vertical sleeve can play a role in limiting, the friction plate 6 is prevented from shifting in work, and the rubber support 5-1 can obtain proper height by adjusting the heights of the upper cushion block 5-2 and the lower cushion block 5-3.
During specific manufacturing, the rubber support 5-1 can be a common rubber support, and the rubber support 5-1 can be used for overcoming the defects of insufficient energy consumption capability and non-resettability of the friction plate 6 and the stainless steel slide block 4. And polishing the contact surface of the stainless steel slide block and the friction plate. The friction plate and the middle connecting plate are both circular, the diameter of the friction plate and the diameter of the middle connecting plate are the same as the inner diameter of the vertical sleeve, the diameter of the friction plate is larger than the diameter of the bottom of the stainless steel sliding block, and the diameter difference between the friction plate and the diameter of the middle connecting plate is not smaller than the horizontal displacement allowable value required by shock insulation. Meanwhile, the heights of the upper cushion block and the lower cushion block can be adjusted according to the actual engineering requirements, and the upper cushion block and the lower cushion block are respectively fixed on the upper connecting plate and the convex eaves in a welding or bolt connection mode during installation.
As a preferable structure, as shown in fig. 5, a plurality of stiffening plates 8-2 are arranged around the vertical sleeve 8-1 at intervals, and the stiffening plates 8-2 and the rubber pads are arranged at intervals; the vertical edge of the stiffening plate 8-2 is fixed on the outer wall of the vertical sleeve 8-1, and the horizontal edge of the bottom is fixed on the upper surface of the convex eaves 8-3. The overall rigidity of the vertical sleeve 8-1 is improved by the stiffening plates.
In the practical embodiment of the invention, as shown in fig. 4, the vertical seismic isolation and reduction assembly comprises a lead extrusion damper, an internal high-strength ring spring group 11, a vertical stop 13, a lower steel sleeve 14-1, a cover plate 7 and an external high-strength ring spring group 9 outside the cover plate, wherein the lower end of the lower steel sleeve 14-1 is fixed on a lower connecting plate 2-1, the upper part of the lower steel sleeve 14-1 is connected with the lower end of a vertical sleeve 8-1, the cover plate 7 is an annular plate, the outer edge of the cover plate 7 is connected with the upper end of the vertical sleeve 8-1, and the inner side edge of the cover plate 7 is inserted into a stainless steel sliding block 4; the upper end of a cylindrical vertical stop block 13 is fixed on the lower surface of the middle connecting plate 3, and the lead extrusion damper is arranged between the middle connecting plate 3 and the lower connecting plate 2-1 and is arranged on the inner side of the vertical stop block 13; the internal high-strength ring spring group 11 surrounds the outside of the lead extrusion damper and is arranged between the vertical stop block 13 and the lower connecting plate 2-1; the lower surface of the convex eave 8-3 of the vertical sleeve 8-1 is provided with a guide rod 10, the lower connecting plate 2-1 is provided with a guide hole 2-2 matched with the guide rod 10, and the external high-strength ring spring group 9 is sleeved outside the guide rod 10 and is arranged between the convex eave 8-3 of the vertical sleeve 8-1 and the lower connecting plate 2-1. The lead extrusion damper comprises an inner baffle cylinder 12-1, an extrusion rod 12-2, a lead block 12-3, an outer baffle cylinder 12-4 and a middle plate 12-5, wherein the outer baffle cylinder 12-4 is a cylinder with an open bottom, the lower end of the outer baffle cylinder 12-4 is fixed on the lower connecting plate 2-1, and the top of the outer baffle cylinder 12-4 is provided with a through hole matched with the extrusion rod 12-2; the inner retaining cylinder 12-1 is a pipe body with an upper opening and a lower opening, the inner retaining cylinder 12-1 is arranged at the bottom of the inner side of the outer retaining cylinder 12-4 and is fixed on the upper surface of the lower connecting plate 2-1, and an inner hole of the inner retaining cylinder 12-1 can be in sliding fit with the extrusion rod 12-2; the middle part of the extrusion rod 12-2 is provided with a spherical bulge, the diameter of the bulge is larger than that of a through hole at the top of the outer baffle cylinder 12-4, the lower end of the extrusion rod 12-2 is inserted into an opening at the upper end of the inner baffle cylinder 12-1, the upper end of the extrusion rod penetrates through the outer baffle cylinder 12-4 and then is connected with the middle plate 12-5, and the middle plate 12-5 is connected with the lower surface of the middle connecting plate 3; the lead block 12-3 is filled in the space between the inner retaining cylinder 12-1, the extrusion rod 12-2 and the outer retaining cylinder 12-4. There is the clearance between outer fender section of thick bamboo top and the intermediate junction board bottom in this structure, and this clearance needs to satisfy the required vertical displacement space of plumbous extrusion attenuator.
Under the action of a vertical earthquake, the lead extrusion damper extrudes the lead block 12-3 to consume energy through the extrusion rod 12-2 in a reciprocating mode, the lower steel sleeve 14-1 and the vertical sleeve 8-1 generate relative sliding friction energy consumption in the vertical direction, the inner high-strength ring spring group 11 and the outer high-strength ring spring group 9 provide vertical reset while consuming energy through friction, and the number of the outer high-strength ring spring groups 9 can be adjusted according to actual needs.
The three-dimensional seismic mitigation and isolation support can bear upward pulling force through the matching use among the cover plate 7, the middle connecting plate 3 and the vertical sleeve 8-1, so that the three-dimensional seismic mitigation and isolation support has good pulling resistance, the seismic mitigation and isolation support is prevented from moving in the vertical direction under the action of wind and earthquake, meanwhile, a high-rise structure can be prevented from overturning under the action of earthquake or wind load, and the normal use of the seismic mitigation and isolation support can be ensured.
During specific manufacturing, as shown in fig. 4 and 5, the guide rod 10 is a solid steel pipe, and the top of the guide rod is fixedly connected with the bottom of the convex eave of the vertical sleeve in a welding mode; the peripheral side wall of the stainless steel sliding block 4 is provided with an annular groove 4-1, and an annular gap is formed between the bottom of the annular groove 4-1 and the inner side edge of the cover plate 7. Wherein, the apron is the annular slab of being assembled by two semicircle arcs and forming, and the apron external diameter is the same with vertical sleeve upper end external diameter, and the apron internal diameter need be greater than the diameter of stainless steel slider middle ring channel, and the diameter difference should be according to the required horizontal displacement allowed value setting of shock insulation to this satisfies the required horizontal space of 4 horizontal slip of stainless steel slider.
Meanwhile, the length of the guide rod penetrating out of the lower connecting plate meets the requirement for vertical displacement of the support, and the guide rod and the rubber support are located on the same vertical shaft.
Further optimizing the technical scheme, as shown in fig. 5 and 7, a plurality of vertical long-strip holes 14-2 are formed in the upper end of the lower steel sleeve 14-1 at intervals, a plurality of mounting holes are correspondingly formed in the cylinder wall of the lower end of the vertical sleeve 8-1, high-strength bolts 15 penetrate through the long-strip holes 14-2 and the mounting holes to fixedly connect the vertical sleeve 8-1 and the lower steel sleeve 14-1, the high-strength bolts 15 are arranged below the convex eaves 8-3, and certain pre-tightening force needs to be applied to the high-strength bolts; the matching surface between the lower steel sleeve 14-1 and the vertical sleeve 8-1 is coated with high damping material to provide damping when the two slide relatively. Wherein, the vertical length of the strip hole is matched with the vertical displacement allowable value of the lead extrusion damper; the long holes can be rectangular holes or elongated holes with two circular arcs at two ends.
In order to facilitate the installation of the cover plate 7, a protruding installation table 8-4 is arranged on the outer side of the upper end of the vertical sleeve 8-1, and the installation table 8-4 is fixedly connected with the outer side edge of the cover plate 7 through a bolt.
The invention also provides a manufacturing method of the self-resettable anti-pulling three-dimensional seismic mitigation and isolation support, which comprises the following steps:
assembling the three-way seismic mitigation and isolation support;
the method comprises the following steps: the lower end of an inner retaining cylinder 12-1 is fixedly welded on a lower connecting plate 2-1, then an extrusion rod 12-2, a lead block 12-3 and an outer retaining cylinder 12-4 are sequentially installed, the lower end of the outer retaining cylinder 12-4 is fixedly welded on the lower connecting plate 2-1, an intermediate plate 12-5 is fixedly welded on the top of the extrusion rod 12-2, the lower end of a lower steel sleeve 14-1 is fixedly welded on the lower connecting plate 2-1, and the installed structure is shown in fig. 8.
Step two: the stiffening plate 8-2 is fixedly welded on the outer side of the vertical sleeve 8-1, the upper end of the vertical stop block 13 is fixedly welded on the intermediate connecting plate 3, the intermediate connecting plate 3 is fixedly welded on the inner wall of the vertical sleeve 8-1, and the intermediate connecting plate 3 and the vertical stop block 13 are both arranged on the inner side of the vertical sleeve 8-1; a guide rod 10 is welded to the bottom of a convex eave 8-3 of a vertical sleeve 8-1, an external high-strength ring spring group 9 is sleeved on the guide rod 10, and the structure after installation is shown in fig. 9.
Step three: firstly, an internal high-strength ring spring group 11 is installed around an external blocking cylinder 12-4, and then a guide rod 10 assembled in the step two penetrates through a guide hole 2-2 in a lower connecting plate 2-1 in the step one; the vertical sleeve 8-1 and the lower steel sleeve 14-1 are fixedly connected by a high-strength bolt 15, the intermediate connecting plate 3 and the intermediate plate 12-5 are fixedly connected by a bolt, and the structure after installation is shown in fig. 10.
Step four: the friction plate 6 is placed on the middle connecting plate 3, the stainless steel sliding block 4 is placed on the friction plate 6, the circle centers of the stainless steel sliding block 4, the friction plate 6 and the middle connecting plate 3 are arranged, then the cover plate 7 is placed on the upper portion of the vertical sleeve 8-1, the outer edge of the cover plate 7 is fixedly connected with the mounting table at the top of the vertical sleeve 8-1 through bolts, and the mounted structure is as shown in fig. 11.
Step five: the upper cushion block 5-2 is fixedly connected with the top surface of the rubber support 5-1, the lower cushion block 5-3 is fixedly connected with the bottom of the rubber support 5-1, the lower cushion block 5-3 is fixedly welded with the convex brim 8-3 at the outer side of the vertical sleeve 8-1, then the stainless steel slide block 4 is fixed on the upper connecting plate 1, the upper cushion block 5-2 is fixedly connected with the upper connecting plate 1 in a welding way, and the structure after installation is shown in figure 4. And assembling the three-dimensional seismic mitigation and isolation support.
And (II) connecting the manufactured three-way seismic mitigation and isolation support with a lower component 00 of a structure to be damped through a bolt, wherein a preformed hole 0-1 matched with the guide rod 10 in application is formed in the lower component 00 of the structure to be damped, and a space is provided for the guide rod 10 to vertically move. The use state of the three-way seismic mitigation and isolation support after being installed is shown in figure 12.
The self-resettable anti-pulling low-height three-dimensional seismic mitigation and isolation support is specifically applied in the following process:
when receiving horizontal earthquake effect, friction plate and stainless steel slider take place relative slip friction power consumption in the horizontal direction, and rubber support takes place to cut and warp and consumes seismic energy and provide the level and reset, and then accomplish horizontal shock attenuation and isolation, and the apron can carry on spacingly to stainless steel slider simultaneously, prevents effectively that friction plate and stainless steel slider from breaking away from vertical sleeve and becoming invalid. Under the action of a vertical earthquake, the lead damper extrudes the lead body to yield and consume energy in a reciprocating manner through the extrusion rod, the lower steel sleeve and the vertical sleeve generate relative sliding friction energy consumption in the vertical direction, the inner high-strength ring spring set and the outer high-strength ring spring set perform friction energy consumption and absorb earthquake kinetic energy, vertical seismic isolation and reduction are realized, and vertical reset is provided.
In conclusion, the three-way seismic mitigation and isolation support provided by the invention has the following advantages:
(1) Through the matching use of the cover plate, the vertical sleeve and the middle connecting plate, the horizontal seismic isolation and reduction assembly and the vertical seismic isolation and reduction assembly are kept independent from each other, the functions of the components are labor-sharing and clear, the components are not influenced with each other, and the respective seismic isolation and reduction capabilities can be fully exerted; meanwhile, the anti-pulling and limiting functions can be achieved. In addition, the cover plate, the vertical sleeve and the middle connecting plate form a closed environment, so that the durability of the friction plate can be improved.
(2) The overall height of the three-way seismic isolation and reduction support can be reduced by adopting a vertical arrangement mode of a friction plate seismic isolation support, a rubber support and a vertical sleeve for horizontal seismic isolation and reduction, and the three-way seismic isolation and reduction support has good stability when the overall height is low; the cover plate is connected with the vertical sleeve, so that the support has the anti-pulling capacity, the stability of the support is improved, the cover plate, the middle connecting plate and the vertical sleeve form a closed environment, and the durability of the friction plate is greatly improved.
In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and thus the present invention is not limited to the specific embodiments disclosed above.
Claims (10)
1. The utility model provides a can subtract isolation bearing from resistance to plucking type three-dimensional of restoring to throne which characterized in that: the damping device comprises an upper connecting plate and a lower connecting plate which are connected with an upper component and a lower component of a structure to be damped, wherein a vertical sleeve is arranged between the upper connecting plate and the lower connecting plate, a middle connecting plate is horizontally fixed in the vertical sleeve, a horizontal seismic isolation and reduction assembly is arranged between the upper connecting plate and the middle connecting plate and used for realizing horizontal seismic isolation and horizontal reset, and a vertical seismic isolation and reduction assembly is arranged between the middle connecting plate and the lower connecting plate and used for realizing vertical seismic isolation and reduction and vertical reset; the vertical sleeve is connected with the upper connecting plate through the horizontal seismic isolation and reduction assembly and connected with the lower connecting plate through the vertical seismic isolation and reduction assembly.
2. The self-resettable anti-pulling three-way seismic mitigation and isolation bearing of claim 1, wherein: the horizontal seismic isolation and reduction assembly comprises a stainless steel sliding block, a friction plate and a plurality of rubber pads, the friction plate is arranged on the upper surface of the middle connecting plate and arranged inside the vertical sleeve, the stainless steel sliding block is arranged between the friction plate and the upper connecting plate, a circle of horizontal convex eaves are arranged on the outer side of the vertical sleeve, and the plurality of rubber pads are arranged between the convex eaves and the upper connecting plate at intervals.
3. The self-resettable anti-pulling three-way seismic mitigation and isolation bearing of claim 2, wherein: the rubber pad includes rubber support, upper cushion and lower cushion, the upper cushion is fixed in on the lower surface of upper junction plate, the lower cushion is fixed in vertical telescopic eave upper surface, rubber support sets up between upper cushion and lower cushion.
4. The self-resettable anti-pulling three-way seismic mitigation and isolation bearing of claim 3, wherein: a plurality of stiffening plates are arranged at intervals around the vertical sleeve, and the stiffening plates and the rubber pads are arranged at intervals; the vertical edge of the stiffening plate is fixed on the outer wall of the vertical sleeve, and the horizontal edge of the bottom of the stiffening plate is fixed on the upper surface of the convex eave.
5. The self-resettable anti-pulling three-way seismic mitigation and isolation bearing of claim 4, wherein: the vertical seismic mitigation and isolation assembly comprises a lead extrusion damper, an internal high-strength ring spring group, a vertical stop block, a lower steel sleeve, a cover plate and an external high-strength ring spring group outside the cover plate, wherein the lower end of the lower steel sleeve is fixed on a lower connecting plate, the upper part of the lower steel sleeve is connected with the lower end of a vertical sleeve, the cover plate is an annular plate, the outer edge of the cover plate is connected with the upper end of the vertical sleeve, and the inner side edge of the cover plate is inserted into a stainless steel sliding block; the upper end of the cylindrical vertical stop block is fixed on the lower surface of the middle connecting plate, and the lead extrusion damper is arranged between the middle connecting plate and the lower connecting plate and is arranged on the inner side of the vertical stop block; the internal high-strength ring spring group surrounds the outside of the lead extrusion damper and is arranged between the vertical stop block and the lower connecting plate; the lower surface of the convex eaves of the vertical sleeve is provided with a guide rod, the lower connecting plate is provided with a guide hole matched with the guide rod, and the external high-strength ring spring group is sleeved outside the guide rod and arranged between the convex eaves of the vertical sleeve and the lower connecting plate.
6. The self-resettable anti-pulling three-way seismic mitigation and isolation bearing of claim 5, wherein: the lead extrusion damper comprises an inner blocking cylinder, an extrusion rod, a lead block, an outer blocking cylinder and a middle plate, wherein the outer blocking cylinder is a cylinder body with an open bottom, the lower end of the outer blocking cylinder is fixed on the lower connecting plate, and the top of the outer blocking cylinder is provided with a through hole matched with the extrusion rod; the inner retaining cylinder is a pipe body with an upper opening and a lower opening, the inner retaining cylinder is arranged at the bottom of the inner side of the outer retaining cylinder and is fixed on the upper surface of the lower connecting plate, and an inner hole of the inner retaining cylinder can be in sliding fit with the extrusion rod; the middle part of the extrusion rod is provided with a spherical bulge, the diameter of the bulge is larger than that of a through hole at the top of the outer baffle cylinder, the lower end of the extrusion rod is inserted into the opening at the upper end of the inner baffle cylinder, the upper end of the extrusion rod penetrates through the outer baffle cylinder and then is connected with the middle plate, and the middle plate is connected with the lower surface of the middle connecting plate; the lead block is filled in the space between the inner blocking barrel, the extrusion rod and the outer blocking barrel.
7. The self-resettable anti-pulling three-way seismic mitigation and isolation bearing of claim 5, wherein: the upper end of the lower steel sleeve is provided with a plurality of vertical strip holes at intervals, the lower end cylinder wall of the vertical sleeve is correspondingly provided with a plurality of mounting holes, high-strength bolts penetrate through the strip holes and the mounting holes to fixedly connect the vertical sleeve and the lower steel sleeve, and the high-strength bolts are arranged below the convex eaves; and a damping material is coated on a matching surface between the lower steel sleeve and the vertical sleeve.
8. The self-resettable anti-pulling three-way seismic mitigation and isolation bearing of claim 5, wherein: the stainless steel slide block is provided with annular grooves on the peripheral side wall, and annular gaps are formed between the bottom of each annular groove and the inner side edge of the cover plate.
9. The self-resettable anti-pulling three-way seismic mitigation and isolation bearing of claim 5, wherein: the upper end of the vertical sleeve is provided with a protruding mounting table, and the mounting table is fixedly connected with the outer side edge of the cover plate through a bolt.
10. A manufacturing method of a self-resettable anti-pulling type three-dimensional seismic mitigation and isolation support comprises the following steps:
assembling the three-way seismic mitigation and isolation bearing according to any of claims 6 to 9:
the method comprises the following steps: fixing the lower end of an inner retaining cylinder on a lower connecting plate, then sequentially installing an extrusion rod, a lead block and an outer retaining cylinder, fixing the lower end of the outer retaining cylinder on the lower connecting plate, fixing an intermediate plate on the top of the extrusion rod, and fixing the lower end of a lower steel sleeve on the lower connecting plate;
step two: the stiffening plate is fixed on the outer side of the vertical sleeve, the upper end of the vertical stop block is fixed on the intermediate connecting plate, the intermediate connecting plate is fixed on the inner wall of the vertical sleeve, and the intermediate connecting plate and the vertical stop block are both arranged on the inner side of the vertical sleeve; fixing a guide rod to the bottom of a convex eave of the vertical sleeve, and sleeving an external high-strength ring spring group on the guide rod;
step three: firstly, an internal high-strength ring spring group is installed around the outer blocking cylinder, and then the guide rod assembled in the second step penetrates through the guide hole in the middle lower connecting plate in the first step; fixedly connecting the vertical sleeve with the lower steel sleeve by using a high-strength bolt, and fixedly connecting the middle connecting plate with the middle plate by using a bolt;
step four: placing a friction plate on the middle connecting plate, then placing a stainless steel sliding block on the friction plate, wherein the circle centers of the stainless steel sliding block, the friction plate and the middle connecting plate are arranged, then placing a cover plate on the upper part of the vertical sleeve, and connecting and fixing the outer edge of the cover plate with the vertical sleeve through a bolt;
step five: the upper cushion block is fixedly connected with the top surface of the rubber support, the lower cushion block is fixedly connected with the bottom of the rubber support, the lower cushion block is fixedly connected with the convex eaves on the outer side of the vertical sleeve, the stainless steel sliding block is fixed on the upper connecting plate, and the upper cushion block is fixedly connected with the upper connecting plate; assembling the three-way seismic mitigation and isolation support;
and (II) connecting the manufactured three-way seismic mitigation and isolation support with a lower component of the to-be-damped structure through a bolt, and arranging a preformed hole matched with the guide rod on the lower component of the to-be-damped structure to provide a space for vertical movement of the guide rod.
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| CN202211258844.7A CN115404767B (en) | 2022-10-14 | 2022-10-14 | Self-resetting anti-pulling three-way shock-absorbing and isolating support and manufacturing method thereof |
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| CN117386020A (en) * | 2023-12-12 | 2024-01-12 | 石家庄铁道大学 | Graded energy consumption type three-way shock-absorbing and isolating support and manufacturing method thereof |
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| JP2003049408A (en) * | 2001-05-31 | 2003-02-21 | Nako Yakousokudourokoushiya | Steel support and bridge supporting device |
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