CN117488967B - Building anti-seismic base structure - Google Patents
Building anti-seismic base structure Download PDFInfo
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- CN117488967B CN117488967B CN202311253340.0A CN202311253340A CN117488967B CN 117488967 B CN117488967 B CN 117488967B CN 202311253340 A CN202311253340 A CN 202311253340A CN 117488967 B CN117488967 B CN 117488967B
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- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 239000010720 hydraulic oil Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 20
- 230000008569 process Effects 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 4
- 238000013016 damping Methods 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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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
-
- 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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to the technical field of building earthquake resistance, in particular to a building earthquake-resistant base structure. A building earthquake-resistant base structure comprises an upper support, a lower support and a friction pendulum mechanism. The friction pendulum mechanism comprises a sleeve, an adjusting component, an upper spherical crown body and a lower spherical crown body. The adjustment assembly includes a first disc, a second disc, and a first spring. The first disc and the second disc are respectively arranged at the upper end and the lower end of the sleeve in a vertically sliding way. The upper side of the upper spherical crown body is provided with an upper friction panel, and the lower side of the lower spherical crown body is provided with a lower friction panel. The upper spherical crown body and the lower spherical crown body are respectively arranged at the upper end and the lower end of the sleeve in a vertically sliding way. The invention provides a building earthquake-resistant base structure, which solves the problem that the prior earthquake-resistant device is easy to cause uneven stress on a friction panel in the process of damping, thereby influencing the effect of consuming earthquake energy in a friction mode.
Description
Technical Field
The invention relates to the technical field of building earthquake resistance, in particular to a building earthquake-resistant base structure.
Background
Building earthquake resistance refers to engineering measures taken to a building in order to mitigate earthquake disasters. The basic purpose of earthquake fortification is to perform earthquake-proof design on a building and take earthquake-proof measures during engineering construction under certain economic conditions. The earthquake damage of the engineering structure is reduced to the maximum extent, so that the casualties are avoided, and the economic loss is reduced.
The traditional anti-seismic technology is to firmly connect the building superstructure and the foundation together, namely, the house is covered more firmly, thicker steel bars and more concrete are used for casting, but the anti-seismic effect is not ideal. The vibration isolation support is formed by adding a vibration isolation layer between the upper structure and the foundation, and the rubber vibration isolation support is installed to achieve soft connection with the ground.
For example, the chinese patent publication No. CN115538636B provides a separation-preventing friction pendulum vibration isolation support, which is provided with an upper seat plate, a lower seat plate and a spherical cap body therebetween, wherein the spherical cap body is an axial elastic body as a support, and when a tensile force is generated, the friction pendulum support can still maintain a pressed state. However, when the friction pendulum vibration isolation support cannot be kept in a pressed state, the spherical crown body positioned in the middle of the upper seat plate and the lower seat plate cannot keep the correct position along with the relative movement of the upper seat plate and the lower seat plate, and the uncertainty of the position of the spherical crown body causes the friction pendulum support to lose the vibration isolation function and even causes the extreme case of damage.
In the prior art, the spherical crown body is divided into two parts, and an elastic mechanism is additionally arranged between the spherical crown bodies of the two parts to ensure that the spherical crown body is always in a pressed state, but the elastic mechanism can lead to uneven stress of the friction panel in the continuous change process, thereby leading to uneven abrasion of the friction panel and affecting the effect of consuming seismic energy in a friction mode.
Disclosure of Invention
The invention provides a building earthquake-resistant base structure, which solves the problem that the prior earthquake-resistant device is easy to cause uneven stress on a friction panel in the process of damping, thereby influencing the effect of consuming earthquake energy in a friction mode.
The invention relates to a building anti-seismic base structure, which adopts the following technical scheme: the building anti-seismic base structure comprises an upper support, a lower support and a friction pendulum mechanism, wherein the friction pendulum mechanism is arranged between the upper support and the lower support. The friction pendulum mechanism comprises a sleeve, an adjusting component, an upper spherical crown body and a lower spherical crown body. The adjustment assembly includes a first disc, a second disc, and a first spring. The first disc and the second disc are respectively arranged at the upper end and the lower end of the sleeve in a vertically sliding way. The first spring is disposed between the first disk and the second disk. The adjustment assembly has a first state in which the first and second disks are stationary and a second state in which the first and second disks are free to move.
The upper spherical crown body and the lower spherical crown body are respectively arranged at the upper end and the lower end of the sleeve in a vertically sliding way. The upper side of the upper spherical crown body is provided with an upper friction panel which is used for being in friction contact with the upper support. The lower side of the upper spherical crown body is fixedly provided with a first spring baffle, the lower side of the first spring baffle is fixedly provided with a second spring, and one end of the second spring is fixedly connected to the upper side of the first disc.
The lower side of the lower spherical crown body is provided with a lower friction panel which is used for being contacted with the lower support. The upper side of the lower spherical crown body is fixedly provided with a second spring baffle, the upper side of the second spring baffle is fixedly provided with a third spring, and one end of the third spring is fixedly connected to the lower side of the second disc.
Further, a plurality of groove groups are formed in the inner peripheral wall of the sleeve, the groove groups are uniformly distributed along the circumferential direction of the sleeve, each groove group comprises a plurality of clamping grooves, the clamping grooves are sequentially arranged along the axial direction of the sleeve, and the distance between two adjacent clamping grooves is gradually reduced along the direction from two ends of the sleeve to the middle of the sleeve.
Be provided with a plurality of first lugs on the first disc, a plurality of first lugs are along the circumference equipartition of first disc, and every first lug can be along the radial removal of first disc, and every first lug sets up in a draw-in groove. Be provided with a plurality of second lugs on the second disc, a plurality of second lugs are along the circumference equipartition of second disc, and every second lug can be along the radial removal of second disc, and every second lug sets up in a draw-in groove.
Further, the adjusting assembly further comprises a plurality of fourth springs and a plurality of fifth springs, a plurality of first sliding grooves are formed in the first disc, the first sliding grooves are uniformly distributed along the circumference of the first disc, each first sliding groove extends along the radial direction of the first disc, one end of each fourth spring is fixedly connected to the inner wall of one first sliding groove, and the other end of each fourth spring is fixedly connected to one first bump.
A plurality of second sliding grooves are formed in the second disc, the second sliding grooves are uniformly distributed along the circumferential direction of the second disc, each second sliding groove extends along the radial direction of the second disc, one end of each fifth spring is fixedly connected to the inner wall of one second sliding groove, and the other end of each fifth spring is fixedly connected to one second lug.
Further, a plurality of limit grooves are formed in the inner peripheral wall of the sleeve, the limit grooves are uniformly distributed along the circumferential direction of the sleeve, each limit groove extends along the up-down direction, and the limit grooves and the groove groups are alternately arranged at intervals. A plurality of logical grooves have been seted up on the first disc, and a plurality of logical grooves are along the circumference equipartition of first disc, and every logical groove extends along the radial of first disc, and a plurality of logical grooves and a plurality of first spout interval stagger arrangement.
A first cavity is formed in the first disc, hydraulic oil is arranged in the first cavity, and the through grooves are communicated with the first cavity. The adjusting component further comprises a connecting plate, the connecting plate can be arranged on the lower side face of the first disc in a vertical sliding mode, a second cavity with variable size is formed between the connecting plate and the first disc, the second cavity is communicated with the first cavity, the upper end of the first spring is fixedly connected with the connecting plate, and the lower end of the first spring is fixedly connected with the second disc. The adjusting component further comprises a plurality of piston rods, one end of each piston rod is slidably arranged in one through groove, and the other end of each piston rod is arranged in one limiting groove.
Further, the groove depth of the limiting groove in the radial direction of the sleeve is gradually increased along the direction from top to bottom.
Further, the upper side of the first disc is fixedly provided with a first connecting column, the peripheral wall of the first connecting column is fixedly provided with a first limit bump, the lower side of the second disc is fixedly provided with a second connecting column, and the peripheral wall of the second connecting column is fixedly provided with a second limit bump.
The lower side of the upper friction panel is fixedly provided with a third connecting column, and the upper side of the lower friction panel is fixedly provided with a fourth connecting column. The first through hole is offered at first spring baffle middle part, and the second through hole has been offered at second spring baffle middle part. The middle part of the upper spherical crown body is provided with a third through hole, and the middle part of the lower spherical crown body is provided with a fourth through hole.
The friction pendulum mechanism further comprises a first thread sleeve and a second thread sleeve, and limiting ring grooves are formed in the outer walls of the first thread sleeve and the second thread sleeve. Spiral grooves and vertical grooves are formed in the inner walls of the first thread sleeve and the second thread sleeve. The spiral groove in the first thread bush is positioned on the upper side of the vertical groove, and the spiral groove in the second thread bush is positioned on the lower side of the vertical groove. The vertical groove extends along the up-down direction, and the spiral groove is communicated with the vertical groove.
The first thread bush sequentially penetrates through the third through hole and the first through hole from top to bottom, and the limiting ring groove on the first thread bush is rotationally connected with the first spring partition plate. The third spliced pole sets up in the inside upper end of first thread bush, and first spliced pole sets up in the inside lower extreme of first thread bush, and first spacing lug can set up in spiral groove and the perpendicular inslot on first thread bush with sliding, and during initial state, first spacing lug is in the juncture of spiral groove and perpendicular groove.
The second thread bush sequentially penetrates through the second through hole and the fourth through hole from top to bottom, and a limiting ring groove on the second thread bush is rotationally connected with the second spring partition plate. The fourth spliced pole sets up in the inside lower extreme of second thread bush, and the second spliced pole sets up in the inside upper end of second thread bush, and the spacing lug of second can set up in the spiral groove and the perpendicular inslot on the second thread bush with sliding, and during initial state, the spacing lug of second is in the juncture of spiral groove and perpendicular groove.
Further, the upper end of the first thread bush is provided with a telescopic first pawl, a first unidirectional ratchet is fixedly arranged on the peripheral wall of the third connecting column on the upper friction panel, and the first unidirectional ratchet is matched with the first pawl ratchet, so that when the first connecting column moves upwards and drives the first thread bush to rotate, the first thread bush and the upper friction panel synchronously rotate.
The lower extreme of second thread bush is provided with telescopic second pawl, fixedly on the periphery wall of the fourth spliced pole on the lower friction panel be provided with second one-way ratchet, second one-way ratchet and second pawl ratchet cooperation to make when second spliced pole moves down and drives second thread bush and rotate, second thread bush and lower friction panel synchronous rotation.
Further, a plurality of connecting pipes are fixedly arranged on the peripheral wall of the sleeve, the plurality of connecting pipes are uniformly distributed along the circumferential direction of the sleeve, and each connecting pipe extends along the radial direction of the sleeve.
The friction pendulum mechanism further includes a plurality of coupling assemblies, each coupling assembly including a hinge block, a first hinge lever and a second hinge lever. One end of each hinge block is slidably arranged in one connecting pipe, one end of the first hinge rod is hinged to the hinge block, and the other end of the first hinge rod is hinged to the upper spherical crown body. One end of the second hinging rod is hinged to the hinging block, and the other end of the second hinging rod is hinged to the lower spherical crown body.
Further, the first spring is a compression spring.
Further, the upper friction panel and the lower friction panel are arc-shaped, and the projections of the upper friction panel and the lower friction panel from top to bottom are circular.
The beneficial effects of the invention are as follows: according to the building anti-seismic base structure, the friction pendulum mechanism is arranged, so that the first springs can reduce the elastic force of the second springs on the first spring partition plates and the elastic force of the third springs on the second spring partition plates in the process that the foundation and the building are close to each other, and the pressure born by the upper friction panel and the lower friction panel is further reduced. In the process that ground and building keep away from each other, first spring can increase the elasticity of second spring and third spring on the second spring baffle on the first spring baffle to further increase the pressure that goes up friction panel and friction panel down receives, thereby realize in the in-process that ground and building are close to each other and keep away from each other, can the biggest reduce second spring and the elastic change interval of third spring, and then guarantee that it consumes seismic energy, go up friction panel and the pressure that friction panel receives down more stable, and then make the frictional force between friction panel and the upper bracket, the frictional force between friction panel and the lower bracket is more stable down, the wearing and tearing volume of friction panel has been reduced and friction panel down has gone up, guarantee the wearing and tearing homogeneity of friction panel and friction panel down simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic structural view of a building earthquake-resistant base structure according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a portion of a base structure for building earthquake protection according to a first embodiment of the present invention;
Fig. 3 is a schematic structural view of a friction pendulum mechanism of a building anti-seismic base structure according to a first embodiment of the present invention;
FIG. 4 is a cross-sectional view at A-A in FIG. 3;
FIG. 5 is an exploded view of a friction pendulum mechanism of a building anti-seismic base structure according to one embodiment of the present invention;
FIG. 6 is an exploded view of a portion of a friction pendulum mechanism of a building anti-seismic base structure according to one embodiment of the present invention;
fig. 7 is a schematic structural view of a sleeve of a building earthquake-resistant base structure according to a first embodiment of the present invention;
FIG. 8 is a cross-sectional view of B-B in FIG. 7;
Fig. 9 is an enlarged view of D in fig. 8;
FIG. 10 is a cross-sectional view of C-C of FIG. 7;
FIG. 11 is a schematic view of a first threaded sleeve of a base structure for building earthquake protection according to an embodiment of the present invention;
fig. 12 is a sectional view of E-E of fig. 11.
In the figure: 100. a foundation; 101. a lower support; 200. building; 210. an upper support; 300. an upper spherical cap body; 310. a first spring spacer; 320. a second spring; 400. an upper friction panel; 500. a lower spherical cap body; 510. a second spring spacer; 520. a third spring; 600. a lower friction panel; 700. a hinge block; 800. a first hinge lever; 900. a sleeve; 901. a connecting pipe; 902. a clamping groove; 903. a limit groove; 110. a first threaded sleeve; 111. a limit ring groove; 112. a vertical groove; 113. a spiral groove; 120. a first disc; 121. a through groove; 122. a first limit bump; 130. a connecting plate; 131. a first spring; 140. a second disc; 150. a first bump; 160. a piston rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 12, an architectural anti-seismic base structure according to an embodiment of the present invention includes an upper support 210, a lower support 101, and a friction pendulum mechanism. The lower support 101 is fixedly arranged on the foundation 100, the upper support 210 is fixedly connected to the building 200, and the friction pendulum mechanism is arranged between the upper support 210 and the lower support 101.
The friction pendulum mechanism includes a sleeve 900, an adjustment assembly, an upper spherical cap body 300, and a lower spherical cap body 500. The axis of the sleeve 900 extends in the up-down direction, and the adjustment assembly includes the first disc 120, the second disc 140, and the first spring 131. The first disk 120 is slidably disposed at an upper end of the inside of the sleeve 900, and the second disk 140 is slidably disposed at a lower end of the inside of the sleeve 900. The first spring 131 is disposed between the first disk 120 and the second disk 140. The adjustment assembly has a first state in which the first and second disks 120, 140 are stationary and a second state in which the first and second disks 120, 140 are free to move.
The upper spherical cap body 300 is slidably disposed at the upper end of the sleeve 900, and the lower spherical cap body 500 is slidably disposed at the lower end of the sleeve 900. The upper side of the upper spherical cap body 300 is provided with an upper friction panel 400 for frictional contact with the upper supporter 210. The lower side of the upper spherical cap body 300 is provided with a first groove, a first spring baffle 310 is fixedly arranged in the first groove, the lower side of the first spring baffle 310 is fixedly provided with a second spring 320, and one end of the second spring 320 is fixedly connected to the upper side of the first disc 120.
The lower side of the lower spherical cap body 500 is provided with a lower friction panel 600 for contacting the lower support 101. The second groove is formed in the upper side face of the lower spherical crown body 500, the second spring baffle 510 is fixedly arranged in the second groove, the third spring 520 is fixedly arranged on the upper side face of the second spring baffle 510, one end of the third spring 520 is fixedly connected to the lower side face of the second disc 140, the second spring 320 and the third spring 520 are identical in size, and the elastic coefficients are identical.
In this embodiment, the inner peripheral wall of the sleeve 900 is provided with a plurality of groove groups, the groove groups are uniformly distributed along the circumferential direction of the sleeve 900, each groove group comprises a plurality of clamping grooves 902, the plurality of clamping grooves 902 are sequentially arranged along the axial direction of the sleeve 900, and the distance between two adjacent clamping grooves 902 is gradually reduced along the direction from two ends of the sleeve 900 to the middle of the sleeve 900.
The first disc 120 is provided with a plurality of first protruding blocks 150, the plurality of first protruding blocks 150 are uniformly distributed along the circumferential direction of the first disc 120, each first protruding block 150 can move along the radial direction of the first disc 120, and each first protruding block 150 is arranged in one clamping groove 902. The second disc 140 is provided with a plurality of second protruding blocks, the second protruding blocks are uniformly distributed along the circumferential direction of the second disc 140, each second protruding block can move along the radial direction of the second disc 140, and each second protruding block is arranged in one clamping groove 902.
The first disk 120 and the second disk 140 are in a first state when the first bump 150 and the second bump are in the card slot 902, and the first disk 120 and the second disk 140 are in a second state when the first bump 150 and the second bump are out of the card slot 902.
When the first and second disks 120 and 140 are moved toward or away from each other, i.e., when the first and second disks 120 and 140 are in the second state, the first springs 131 may equalize the elastic forces of the second and third springs 320 and 520, and the elastic forces of the first, second and third springs 131, 320 and 520 are the same. The difference in spring force Δf=kx between the first spring 131 before and after the change, and the difference in spring force Δf=kx between the second spring 320 before and after the change, and the distance between the two vertically adjacent card slots 902 is X.
In this embodiment, the adjusting assembly further includes a plurality of fourth springs and a plurality of fifth springs, the first disc 120 is provided with a plurality of first sliding grooves, the plurality of first sliding grooves are uniformly distributed along the circumference of the first disc 120, each first sliding groove extends along the radial direction of the first disc 120, one end of each fourth spring is fixedly connected to the inner wall of one first sliding groove, and the other end of each fourth spring is fixedly connected to one first bump 150.
A plurality of second sliding grooves are formed in the second disc 140, the second sliding grooves are uniformly distributed along the circumferential direction of the second disc 140, each second sliding groove extends along the radial direction of the second disc 140, one end of each fifth spring is fixedly connected to the inner wall of one second sliding groove, and the other end of each fifth spring is fixedly connected to one second protruding block. The fourth spring and the fifth spring are the same in size and the elastic coefficient is the same. When the second spring 320 and the third spring 520 respectively have a greater elastic force on the first disk 120 and the second disk 140 than the fourth spring and the fifth spring baffle, the first protrusion 150 and the second protrusion can be disengaged from the locking groove 902.
In this embodiment, a plurality of limiting grooves 903 are formed on the inner peripheral wall of the sleeve 900, the plurality of limiting grooves 903 are uniformly distributed along the circumferential direction of the sleeve 900, each limiting groove 903 extends along the up-down direction, and the plurality of limiting grooves 903 and the plurality of groove groups are alternately arranged at intervals. The first disc 120 is provided with a plurality of through grooves 121, the through grooves 121 are uniformly distributed along the circumferential direction of the first disc 120, each through groove 121 extends along the radial direction of the first disc 120, and the through grooves 121 and the first sliding grooves are alternately arranged at intervals.
The first disc 120 is provided with a first cavity, hydraulic oil is arranged in the first cavity, and the plurality of through grooves 121 are communicated with the first cavity. The lower side of the first disk 120 is provided with a connection plate 130, and the connection plate 130 can slide up and down relative to the first disk 120. A second cavity with a variable size is formed between the connecting plate 130 and the first disc 120, the second cavity is communicated with the first cavity, the upper end of the first spring 131 is fixedly connected to the connecting plate 130, and the lower end of the first spring 131 is fixedly connected to the second disc 140.
The adjusting assembly further includes a plurality of piston rods 160, wherein one end of each piston rod 160 is slidably disposed in one of the through grooves 121, and the other end of each piston rod 160 is disposed in one of the limit grooves 903.
In the present embodiment, the groove depth of the limit groove 903 in the radial direction of the sleeve 900 gradually increases along the direction from top to bottom. Since the first spring 131 is always tightly pressed against the connecting plate 130, the piston rod 160 is always tightly pressed against the groove wall of the limit groove 903 under the action of the first spring 131 and the connecting plate 130.
During the process of approaching the first and second disks 120 and 140 to each other, and each time the first and second protrusions 150 and 902 move from the current clamping groove 902 to the next clamping groove 902, the first springs 131 are compressed to equalize the pressures applied by the second and third springs 320 and 520, the connection plate 130 and the first disk 120 move downward simultaneously, and then the space of the through groove 121 becomes larger gradually due to the gradually increasing groove depth of the limit groove 903 in the radial direction of the sleeve 900, and the amount of hydraulic oil receivable in the through groove 121 increases, so that the connection plate 130 and the first disk 120 can approach each other, and at this time the first springs 131 gradually reset and elongate a part.
During the process that the first and second disks 120 and 140 are moved away from each other, and each time the first and second protrusions 150 and 902 are moved from the current card slot 902 to the next card slot 902, the first spring 131 is stretched to equalize the pressures applied by the second and third springs 320 and 520, the connection plate 130 and the first disk 120 are moved upward simultaneously, and then the connection plate 130 and the first disk 120 can be moved away from each other due to the space of the through slot 121 becoming smaller, at this time the first spring 131 is gradually reset to compress a portion.
In this embodiment, a first connection post is fixedly disposed on the upper side of the first disc 120, a first limit bump 122 is fixedly disposed on the peripheral wall of the first connection post, a second connection post is fixedly disposed on the lower side of the second disc 140, and a second limit bump is fixedly disposed on the peripheral wall of the second connection post.
The lower side of the upper friction panel 400 is fixedly provided with a third connection post, and the upper side of the lower friction panel 600 is fixedly provided with a fourth connection post. A first through hole is formed in the middle of the first spring diaphragm 310, and a second through hole is formed in the middle of the second spring diaphragm 510. A third through hole is formed in the middle of the upper spherical cap body 300, and a fourth through hole is formed in the middle of the lower spherical cap body 500.
The friction pendulum mechanism further comprises a first thread bush 110 and a second thread bush, and the outer walls of the first thread bush 110 and the second thread bush are respectively provided with a limiting ring groove 111. The inner walls of the first thread bush 110 and the second thread bush are respectively provided with a spiral groove 113 and a vertical groove 112. The spiral groove 113 in the first thread bush 110 is located at the upper side of the vertical groove 112, and the spiral groove 113 in the second thread bush is located at the lower side of the vertical groove 112. The vertical groove 112 extends in the up-down direction, and the spiral groove 113 communicates with the vertical groove 112.
The first screw cap 110 sequentially passes through the third through hole and the first through hole from top to bottom, and the limiting ring groove 111 on the first screw cap 110 is rotatably connected with the first spring spacer 310. The third connecting column is arranged at the upper end inside the first thread bush 110, the first connecting column is arranged at the lower end inside the first thread bush 110, the first limiting lug 122 can be slidably arranged in the spiral groove 113 and the vertical groove 112 on the first thread bush 110, and in an initial state, the first limiting lug 122 is positioned at the junction of the spiral groove 113 and the vertical groove 112.
The second thread bush sequentially passes through the second through hole and the fourth through hole from top to bottom, and the limiting ring groove 111 on the second thread bush is rotationally connected with the second spring baffle 510. The fourth spliced pole sets up in the inside lower extreme of second thread bush, and the second spliced pole sets up in the inside upper end of second thread bush, and the spacing lug of second can set up in the spiral groove 113 and the perpendicular inslot 112 on the second thread bush in sliding, and during initial state, the spacing lug of second is in the juncture of spiral groove 113 and perpendicular inslot 112.
In the process that the first disc 120 and the second disc 140 are away from each other, the first connection column moves upward, the second connection column moves downward, the first limit bump 122 enters the spiral groove 113 in the first thread bush 110, and then drives the first thread bush 110 to rotate, and the first thread bush 110 drives the upper friction panel 400 to synchronously rotate. The second limiting bump enters the spiral groove 113 in the second thread bush, and then drives the second thread bush to rotate, and the second thread bush drives the lower friction panel 600 to synchronously rotate. So that the upper friction plate 400 and the lower friction plate 600 rotate when the pressure of the upper friction plate 400 and the lower friction plate 600 is in a reduced state in each vibration stroke, the rotation resistance of the lower friction plate 600 and the upper friction plate 400 is reduced, the wear uniformity of the lower friction plate 600 and the upper friction plate 400 is ensured, and the stability in the whole friction process is ensured.
In this embodiment, the upper end of the first screw cap 110 is provided with a telescopic first pawl, and a first unidirectional ratchet is fixedly provided on the outer circumferential wall of the third connection column on the upper friction panel 400, and the first unidirectional ratchet is engaged with the first pawl ratchet, so that when the first connection column moves upward and drives the first screw cap 110 to rotate, the first screw cap 110 and the upper friction panel 400 rotate synchronously.
The lower end of the second screw sleeve is provided with a telescopic second pawl, and a second unidirectional ratchet is fixedly arranged on the peripheral wall of the fourth connecting column on the lower friction panel 600, and the second unidirectional ratchet is matched with the second pawl ratchet, so that when the second connecting column moves downwards and drives the second screw sleeve to rotate, the second screw sleeve and the lower friction panel 600 synchronously rotate.
In the present embodiment, a plurality of connection pipes 901 are fixedly provided on the outer peripheral wall of the sleeve 900, the plurality of connection pipes 901 being uniformly distributed along the circumferential direction of the sleeve 900, each connection pipe 901 extending in the radial direction of the sleeve 900. The friction pendulum mechanism further comprises a plurality of connection assemblies, each connection assembly comprising a hinge block 700, a first hinge lever 800 and a second hinge lever. One end of each hinge block 700 is slidably disposed in one connection pipe 901, one end of the first hinge rod 800 is hinged to the hinge block 700, and the other end of the first hinge rod 800 is hinged to the upper spherical cap body 300. One end of the second hinge rod is hinged to the hinge block 700, and the other end of the second hinge rod is hinged to the lower spherical cap body 500. The sleeve 900 is always positioned at the midpoint of the upper and lower spherical cap bodies 300 and 500 by the hinge blocks 700, the first hinge rod 800, and the second hinge rod.
In the present embodiment, the first spring 131 is a compression spring.
In the present embodiment, the upper friction plate 400 and the lower friction plate 600 are each arc-shaped, and the projections of the upper friction plate 400 and the lower friction plate 600 from top to bottom are circular.
The working process comprises the following steps: in the earthquake, since the first and second protrusions 150 and 140 are positioned in the clamping grooves 902, the first and second discs 120 and 140 cannot move when the foundation 100 and the building 200 vibrate up and down, and the second and third springs 320 and 520 perform buffering and damping.
When the earthquake magnitude is large, until the second spring 320 has an elastic force against the first disc 120, the third spring 520 has an elastic force against the second disc 140 enough to enable the first bump 150 to overcome the elastic force of the fourth spring, and when the second bump overcomes the elastic force of the fifth spring, the first bump 150 and the second bump are separated from the clamping groove 902, that is, the first disc 120 and the second disc 140 are changed from the first state to the second state. The first disk 120 and the second disk 140 may be moved toward or away from each other.
When the first bump 150 and the second bump are separated from the card slot 902, the first spring 131, the second spring 320 and the third spring 520 are in a freely compressible and stretchable state, and the first spring 131 can balance the elastic forces of the second spring 320 and the third spring 520, and at this time, the elastic forces of the first spring 131, the second spring 320 and the third spring 520 are the same. During the approach of the foundation 100 and the building 200 to each other, the pressure applied to the second springs 320 and the third springs 520 is reduced, thereby further reducing the pressure applied to the upper friction panel 400 and the lower friction panel 600. During the process that the foundation 100 and the building 200 are away from each other, the pressure applied to the second spring 320 and the third spring 520 increases, thereby further increasing the pressure applied to the upper friction panel 400 and the lower friction panel 600. Thereby realizing that the pressure born by the upper friction panel 400 and the lower friction panel 600 is more stable in the process that the foundation 100 and the building 200 are mutually close to and far away from each other, and further ensuring that the friction force between the upper friction panel 400 and the upper support 210 and the friction force between the lower friction panel 600 and the lower support 101 is more stable.
During the process of approaching the first and second disks 120 and 140 to each other, and each time the first and second protrusions 150 and 902 move from the current clamping groove 902 to the next clamping groove 902, the first springs 131 are compressed to equalize the pressures applied by the second and third springs 320 and 520, the connection plate 130 and the first disk 120 move downward simultaneously, and then the space of the through groove 121 becomes larger gradually due to the gradually increasing groove depth of the limit groove 903 in the radial direction of the sleeve 900, and the amount of hydraulic oil receivable in the through groove 121 increases, so that the connection plate 130 and the first disk 120 can approach each other, and at this time the first springs 131 gradually reset and elongate a part.
In the process that the first disc 120 and the second disc 140 are away from each other, and each time the first bump 150 and the second bump are moved from the current clamping groove 902 to the next clamping groove 902, the first spring 131 is stretched to balance the pressure applied by the second spring 320 and the third spring 520, the connecting plate 130 and the first disc 120 move upwards synchronously, and then the connecting plate 130 and the first disc 120 can be away from each other due to the fact that the space of the through groove 121 is gradually reduced, at the moment, the first spring 131 gradually returns to compress a part, so that in the process that the difference value of the elastic force between the second spring 320 and the third spring 520 and the first spring 131 is gradually reduced, the switching times of the first bump 150 and the second bump in the clamping groove 902 are increased, the extending distance of the second spring 320 and the third spring 520 is increased, and the application range of the second spring 320 and the third spring 520 is further increased, and the earthquake waves are adapted to a wider range.
In the process that the first disc 120 and the second disc 140 are separated from each other, the first connection column moves upward, the second connection column moves downward, the first limit bump 122 enters the spiral groove 113 in the first thread bush 110, and then drives the first thread bush 110 to rotate, and the first thread bush 110 drives the upper friction panel 400 to synchronously rotate through the first unidirectional ratchet. The second spacing lug gets into in the helicla flute 113 in the second thread bush, and then drive the second thread bush and rotate, the second thread bush drives the synchronous rotation of friction panel 600 down through the one-way ratchet of second, make friction panel 400 and lower friction panel 600 in every vibration stroke in-process, when the pressure of friction panel 400 and lower friction panel 600 is in the state of reducing, friction panel 400 and lower friction panel 600 rotate, both reduced the rotation resistance of friction panel 600 and upper friction panel 400 down, also avoided leading to the inhomogeneous condition of friction panel wearing and tearing at the in-process that the transverse wave rocked about, guaranteed the stability of whole friction in-process.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. A building antidetonation base structure, its characterized in that:
The device comprises an upper support, a lower support and a friction pendulum mechanism, wherein the friction pendulum mechanism is arranged between the upper support and the lower support; the friction pendulum mechanism comprises a sleeve, an adjusting component, an upper spherical crown body and a lower spherical crown body; the adjusting assembly comprises a first disc, a second disc and a first spring; the first disc and the second disc are respectively arranged at the upper end and the lower end of the inside of the sleeve in a vertically sliding way; the first spring is arranged between the first disc and the second disc; the adjusting assembly is provided with a first state and a second state, wherein the first state is that the first disc and the second disc are static, and the second state is that the first disc and the second disc can move freely;
The upper spherical crown body and the lower spherical crown body are respectively arranged at the upper end and the lower end of the sleeve in a vertically sliding way; an upper friction panel used for being in friction contact with the upper support is arranged on the upper side surface of the upper spherical crown body; the lower side surface of the upper spherical crown body is fixedly provided with a first spring baffle, the lower side surface of the first spring baffle is fixedly provided with a second spring, and one end of the second spring is fixedly connected with the upper side surface of the first disc;
the lower side surface of the lower spherical crown body is provided with a lower friction panel for contacting with the lower support; the upper side surface of the lower spherical crown body is fixedly provided with a second spring baffle, the upper side surface of the second spring baffle is fixedly provided with a third spring, and one end of the third spring is fixedly connected with the lower side surface of the second disc;
The inner peripheral wall of the sleeve is provided with a plurality of groove groups, the groove groups are uniformly distributed along the circumferential direction of the sleeve, each groove group comprises a plurality of clamping grooves, the clamping grooves are sequentially arranged along the axial direction of the sleeve, and the distance between two adjacent clamping grooves is gradually reduced along the direction from two ends of the sleeve to the middle part of the sleeve;
A plurality of first convex blocks are arranged on the first disc, the plurality of first convex blocks are uniformly distributed along the circumferential direction of the first disc, each first convex block can move along the radial direction of the first disc, and each first convex block is arranged in one clamping groove; a plurality of second convex blocks are arranged on the second disc, the second convex blocks are uniformly distributed along the circumferential direction of the second disc, each second convex block can move along the radial direction of the second disc, and each second convex block is arranged in one clamping groove;
The adjusting assembly further comprises a plurality of fourth springs and a plurality of fifth springs, a plurality of first sliding grooves are formed in the first disc, the first sliding grooves are uniformly distributed along the circumference of the first disc, each first sliding groove extends along the radial direction of the first disc, one end of each fourth spring is fixedly connected to the inner wall of one first sliding groove, and the other end of each fourth spring is fixedly connected to one first protruding block;
a plurality of second sliding grooves are formed in the second disc, the second sliding grooves are uniformly distributed along the circumferential direction of the second disc, each second sliding groove extends along the radial direction of the second disc, one end of each fifth spring is fixedly connected to the inner wall of one second sliding groove, and the other end of each fifth spring is fixedly connected to one second lug.
2. A building earthquake-resistant base structure as claimed in claim 1, wherein:
A plurality of limit grooves are formed in the inner peripheral wall of the sleeve, the limit grooves are uniformly distributed along the circumferential direction of the sleeve, each limit groove extends along the up-down direction, and the limit grooves and the groove groups are alternately arranged at intervals; the first disc is provided with a plurality of through grooves, the through grooves are uniformly distributed along the circumferential direction of the first disc, each through groove extends along the radial direction of the first disc, and the through grooves and the first sliding grooves are alternately arranged at intervals;
A first cavity is formed in the first disc, hydraulic oil is arranged in the first cavity, and a plurality of through grooves are communicated with the first cavity; the adjusting assembly further comprises a connecting plate, the connecting plate can be arranged on the lower side face of the first disc in a vertically sliding mode, a second cavity with a variable size is formed between the connecting plate and the first disc, the second cavity is communicated with the first cavity, the upper end of the first spring is fixedly connected with the connecting plate, and the lower end of the first spring is fixedly connected with the second disc; the adjusting component further comprises a plurality of piston rods, one end of each piston rod is slidably arranged in one through groove, and the other end of each piston rod is arranged in one limiting groove.
3. A building earthquake-resistant base structure as claimed in claim 2, wherein:
along the direction from top to bottom, the groove depth of the limit groove in the radial direction of the sleeve gradually increases.
4. A building earthquake-resistant base structure as claimed in claim 1, wherein:
the upper side surface of the first disc is fixedly provided with a first connecting column, the peripheral wall of the first connecting column is fixedly provided with a first limit lug, the lower side surface of the second disc is fixedly provided with a second connecting column, and the peripheral wall of the second connecting column is fixedly provided with a second limit lug;
The lower side surface of the upper friction panel is fixedly provided with a third connecting column, and the upper side surface of the lower friction panel is fixedly provided with a fourth connecting column; the middle part of the first spring baffle is provided with a first through hole, and the middle part of the second spring baffle is provided with a second through hole; the middle part of the upper spherical crown body is provided with a third through hole, and the middle part of the lower spherical crown body is provided with a fourth through hole;
The friction pendulum mechanism further comprises a first thread bush and a second thread bush, and limit ring grooves are formed in the outer walls of the first thread bush and the second thread bush; spiral grooves and vertical grooves are formed in the inner walls of the first thread sleeve and the second thread sleeve; the spiral groove in the first thread bush is positioned on the upper side of the vertical groove, and the spiral groove in the second thread bush is positioned on the lower side of the vertical groove; the vertical groove extends along the up-down direction, and the spiral groove is communicated with the vertical groove;
The first thread bush sequentially passes through the third through hole and the first through hole from top to bottom, and a limit ring groove on the first thread bush is rotationally connected with the first spring partition plate; the third connecting column is arranged at the upper end of the inside of the first thread bush, the first connecting column is arranged at the lower end of the inside of the first thread bush, the first limit lug can be arranged in the spiral groove and the vertical groove on the first thread bush in a sliding manner, and in an initial state, the first limit lug is positioned at the junction of the spiral groove and the vertical groove;
the second thread bush sequentially passes through the second through hole and the fourth through hole from top to bottom, and a limiting ring groove on the second thread bush is rotationally connected with the second spring baffle plate; the fourth spliced pole sets up in the inside lower extreme of second thread bush, and the second spliced pole sets up in the inside upper end of second thread bush, and the spacing lug of second can set up in the spiral groove and the perpendicular inslot on the second thread bush with sliding, and during initial state, the spacing lug of second is in the juncture of spiral groove and perpendicular groove.
5. A building earthquake-resistant base structure as set forth in claim 4, wherein:
The upper end of the first threaded sleeve is provided with a telescopic first pawl, a first unidirectional ratchet is fixedly arranged on the peripheral wall of a third connecting column on the upper friction panel, and the first unidirectional ratchet is matched with the first pawl ratchet, so that when the first connecting column moves upwards and drives the first threaded sleeve to rotate, the first threaded sleeve and the upper friction panel synchronously rotate;
The lower extreme of second thread bush is provided with telescopic second pawl, fixedly on the periphery wall of the fourth spliced pole on the lower friction panel be provided with second one-way ratchet, second one-way ratchet and second pawl ratchet cooperation to make when second spliced pole moves down and drives second thread bush and rotate, second thread bush and lower friction panel synchronous rotation.
6. A building earthquake-resistant base structure as claimed in claim 1, wherein:
a plurality of connecting pipes are fixedly arranged on the peripheral wall of the sleeve, the connecting pipes are uniformly distributed along the circumferential direction of the sleeve, and each connecting pipe extends along the radial direction of the sleeve;
The friction pendulum mechanism further comprises a plurality of connecting components, each connecting component comprises a hinging block, a first hinging rod and a second hinging rod; one end of each hinge block is slidably arranged in one connecting pipe, one end of the first hinge rod is hinged to the hinge block, and the other end of the first hinge rod is hinged to the upper spherical crown body; one end of the second hinging rod is hinged to the hinging block, and the other end of the second hinging rod is hinged to the lower spherical crown body.
7. A building earthquake-resistant base structure as claimed in claim 1, wherein:
The first spring is a compression spring.
8. A building earthquake-resistant base structure as claimed in claim 1, wherein:
the upper friction panel and the lower friction panel are arc-shaped, and the projections of the upper friction panel and the lower friction panel from top to bottom are circular.
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| CN202311253340.0A CN117488967B (en) | 2023-09-27 | 2023-09-27 | Building anti-seismic base structure |
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| CN202311253340.0A CN117488967B (en) | 2023-09-27 | 2023-09-27 | Building anti-seismic base structure |
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| US20230243175A1 (en) * | 2020-06-24 | 2023-08-03 | Pontificia Universidad Católica De Chile | Composite sliding block for frictional-type seismic isolators and seismic isolators with said composite sliding block |
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| CN117488967A (en) | 2024-02-02 |
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