CN116411641A - Horizontal multi-dimensional multi-stage damping energy-consumption rolling support for underground station support column - Google Patents
Horizontal multi-dimensional multi-stage damping energy-consumption rolling support for underground station support column Download PDFInfo
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- 238000013016 damping Methods 0.000 title claims abstract description 93
- 238000005096 rolling process Methods 0.000 title claims abstract description 76
- 238000005265 energy consumption Methods 0.000 title claims abstract description 22
- 230000035939 shock Effects 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims description 30
- 238000003860 storage Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
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- 229910000831 Steel Inorganic materials 0.000 description 8
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- 230000000694 effects Effects 0.000 description 8
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- -1 polytetrafluoroethylene Polymers 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 229910000639 Spring steel Inorganic materials 0.000 description 2
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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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
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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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention discloses a horizontal multi-dimensional multi-stage damping energy-consumption rolling support for an underground station support column, which comprises an upper seat plate and a lower seat plate; the lower seat plate comprises a lower connecting plate, a rigid supporting plate and a plurality of rigid wear-resistant balls, wherein a plurality of hemispherical rolling grooves are distributed on the upper surface of the rigid supporting plate, and each rigid wear-resistant ball is correspondingly arranged in the hemispherical rolling grooves; the upper seat plate is provided with a rigid annular surrounding baffle which extends downwards and is sleeved on the outer side of the rigid supporting plate, and a plurality of multistage shock-resistant dampers are arranged between the upper seat plate and the rigid annular surrounding baffle along the annular direction at intervals. The invention has the advantages that: when the horizontal earthquake force and the running direction of the subway station form any angle, the balls annularly arranged in the support can roll randomly according to the change of the vibration direction, so that multidimensional sliding between the top beam and the support column is realized, and the integral collapse of the station caused by the damage of the support column is avoided; the horizontal multi-dimensional earthquake-resistant damper and the spherical hinge are annularly distributed to respond to the vibration direction change, so that the horizontal multi-dimensional earthquake-resistant energy consumption of the rolling support is realized.
Description
Technical Field
The invention belongs to the technical field of underground structural engineering, and particularly relates to a horizontal multi-dimensional multi-stage damping energy-consumption rolling support for an underground station support column.
Background
With the great development of urban construction, the urban scale is continuously enlarged, urban population is gathered, the problems of space resource shortage, traffic congestion, environmental pollution and the like are increasingly outstanding, and the urban comprehensive development is restricted. The development and utilization of urban underground space is an effective and important way to relieve the pressure and living space of urban ecological environment, and is also a focus and difficulty of public attention. In the past, the earthquake resistance of an underground structure is far better than that of an overground structure due to surrounding rock-soil medium constraint, the fact that the earthquake motion is reduced along with the buried depth and the like. Therefore, the underground structures that have been built earlier are mostly not designed for earthquake resistance. Recent seismic hazard surveys indicate that: subsurface structures are also facing threats from earthquakes. The intersection of the world two major earthquake zones-the Pacific earthquake zone and the European earthquake zone-is the largest large Liu Jian source strong earthquake activity zone in the world, and most of the built subway stations and section tunnels are positioned in the strong earthquake zone. The underground railway system belongs to large-section urban underground engineering, once the underground railway system is damaged by strong earthquakes, the repair difficulty is high, the safety of surrounding building structures and the normal operation of surface traffic are seriously affected, and the life and property safety of people are seriously threatened. Therefore, the earthquake-proof safety of underground structures is also one of the key technological requirements of important engineering construction recently faced by the country.
In the earthquake of the japanese sakagu in 1995, a large number of underground works such as subways, underground parking lots, underground tunnels, underground commercial streets and the like are severely damaged, and even the large-scale subway station is completely collapsed. Related researches show that the vertical key support column is an earthquake-resistant weak link of an underground frame structure, under the combined action of horizontal and vertical earthquakes, the vertical inertia effect of the sheared and damaged upper earth covering body is enhanced, the dynamic axial compression ratio of the support column is obviously increased, the shearing deformation resistance of the support column is greatly weakened, the side wall is damaged before the side wall is damaged, the top plate is collapsed, and finally the whole structural system is collapsed and damaged.
In order to prevent the whole collapse of the underground structure caused by the shearing damage of the supporting column, the prior invention patent CN 112302186A of an arc groove roller friction support for the supporting column of the underground subway station is composed of an upper seat plate, a lower seat plate, a polytetrafluoroethylene arc plate and a steel roller. The upper surface of lower bedplate is provided with rectangular shape circular arc recess, polytetrafluoroethylene circular arc board fixed mounting in rectangular shape circular arc recess, and the steel roller bearing is placed on polytetrafluoroethylene circular arc board, forms sliding and rolling contact with polytetrafluoroethylene circular arc board and last bedplate respectively, and last bedplate forms pre-buried steel sheet and is fixed in the roof beam bottom surface through welding anchor bars and the pouring together of structure roof beam. The device greatly reduces the relative horizontal deformation of the support column under the action of earthquake by partially releasing the horizontal constraint between the support column and the top beam of the subway station, and avoids the damage of the support column.
In order to further release the horizontal constraint between the top beam and the support column, the invention patent CN 112302187A, namely a rolling friction support for the support column of the underground subway station, changes a polytetrafluoroethylene circular arc plate into a stainless steel circular arc plate, and a plurality of long strip-shaped grooves are arranged in the circular arc plate, so that a steel rod, a ball and an upper seat plate form rolling contact. The rolling support realizes free sliding of the top beam and the support column of the underground subway station, and further reduces relative horizontal deformation of the support column under the action of earthquake. However, both of these abutment devices only take into account that the horizontal seismic forces are perpendicular to the direction of travel of the station, releasing the horizontal constraint between the header and the support column. In practice, the horizontal earthquake force and the running direction of the station may be any angle, and the two supports cannot enable the sliding between the top beam and the support column to be changed along with the vibration direction; secondly, when an earthquake occurs, the stability of the whole structure of the station is poor due to the arrangement of the two rolling and sliding supports between the top beam and the support column, the purpose of horizontal damping and energy consumption cannot be achieved at the support, and the vibration amplitude of the station is increased under the action of the earthquake.
Furthermore, the earthquake force and the running direction of the station can be any angle, and the existing support lacks anti-seismic arrangement which adapts to the multidimensional change of the horizontal earthquake force; finally, the existing support lacks multi-level horizontal damping arrangement, and the grading damping can be better adapted to the change of the magnitude of the earthquake force in real time, so that the support achieves the optimal damping and energy consumption effects. The invention patent CN111173161A 'a multidimensional anti-seismic buffering base mechanism for building houses and an implementation method thereof' comprises an external cylinder, a supporting column, a longitudinal buffering component, a spherical buffering component, a floating hinge component, a flexible gasket, a top plate, a buffering rope group and an internal filler; the vertical damping springs and the viscous dampers which are horizontally and annularly arranged on the support columns are mainly used for dissipating horizontal and vertical earthquake loads; the upper arc panel with the lower arc panel and the arc embedded balls is arranged on the supporting plate to provide limited horizontal movement capability for the upper building. The bottom support is mainly used for damping and dissipating energy of a building foundation, ensures that the bottom of the building is not separated from the foundation, and greatly limits the free movement capacity of the building in a horizontal plane. However, collapse damage to subway stations under seismic loading is mainly due to the constraint of the support columns on the roof beams restricting free movement of the roof.
Therefore, how to eliminate the constraint of the subway station support column on the top beam, when the earthquake load acts on the subway station, the support column and the top beam can slide freely in the horizontal plane along with the change of the earthquake load direction, and the earthquake load with continuously changed grading dissipation direction is the key for better ensuring the safety and the stability of the subway station.
Disclosure of Invention
According to the defects of the prior art, the invention provides the horizontal multi-dimensional multi-stage damping and energy-consuming rolling support for the underground station support column, wherein the horizontal multi-dimensional multi-stage damping and energy-consuming rolling support is characterized in that an upper seat plate and a lower seat plate are arranged between a station top beam and the support column so that when horizontal earthquake force forms any angle with the running direction of the subway station, balls annularly distributed on a rigid support plate can roll randomly according to the change of the vibration direction, and multi-dimensional sliding between the top beam and the support column is realized; and the horizontal multidimensional anti-seismic energy consumption purpose of the rolling support is realized by arranging a multistage anti-seismic damper and a spherical hinge between the rigid support plate and the rigid annular enclosing shield in response to the vibration direction change.
The invention is realized by the following technical scheme:
the horizontal multi-dimensional multi-stage damping energy-consumption rolling support for the underground station support column is arranged between a station top beam and the support column and is characterized by comprising an upper seat plate and a lower seat plate; the upper seat board is fixed on the lower surface of the station top beam, and the lower seat board is fixed on the upper surface of the support column; the lower seat plate comprises a lower connecting plate, a rigid supporting plate and a plurality of rigid wear-resistant balls, wherein the lower surface of the rigid supporting plate is fixed on the lower connecting plate, a plurality of hemispherical rolling grooves are distributed on the upper surface of the rigid supporting plate, and each rigid wear-resistant ball is correspondingly arranged in each hemispherical rolling groove; the upper seat plate is provided with a rigid annular enclosing baffle which extends downwards and is sleeved on the outer side of the rigid support plate, and a plurality of multistage shock-resistant dampers are arranged between the inner wall surface of the rigid annular enclosing baffle and the outer wall surface of the rigid support plate along the annular interval. When an earthquake occurs, the multistage anti-seismic dampers distributed in a horizontal annular mode can form connection between the top beam and the support column of the station, horizontal earthquake load can be dissipated, and structural stability of the station is guaranteed.
The upper seat board comprises an upper connecting plate and the rigid annular surrounding baffle; the upper connecting plate is fastened on the lower surface of the station top beam through bolts and a rigid threaded pipe, and the rigid threaded pipe is embedded and anchored in the lower surface of the station top beam; the rigid annular surrounding baffle is in welded connection or an integrated casting structure with the upper connecting plate. The rigid annular enclosing baffle can provide support for the multistage anti-vibration damper, and can prevent external dust from entering, prolong the service life of the rolling support and maintain the normal working performance of the rolling support.
The lower connecting plate is fastened on the upper surface of the support column through bolts and a rigid threaded pipe, and the rigid threaded pipe is embedded and anchored in the upper surface of the support column.
The rigid support plate is welded on the upper surface of the lower connecting plate, oil conveying grooves are formed between the hemispherical rolling grooves on the upper surface of the rigid support plate to form mutual communication, at least one hemispherical rolling groove is connected with an oil conveying pipe, one end of the oil conveying pipe is connected with the bottom of the hemispherical rolling groove, and the other end of the oil conveying pipe is communicated with the oil storage device through a pressure pump. Lubricating oil in the oil storage device is injected into the hemispherical rolling groove through the pressure pump, lubricating oil is provided for the rigid wear-resistant balls, the hemispherical rolling groove and the lower surface of the upper connecting plate, and friction resistance between a station top beam and a supporting column is reduced.
The center of the upper surface of the rigid supporting plate is provided with a hemispherical rolling groove, at least one circle of hemispherical rolling grooves are formed in the outer side of the hemispherical rolling groove at annular intervals by taking the centered hemispherical rolling groove as the center, the centered hemispherical rolling grooves are respectively communicated with the hemispherical rolling grooves located on the outer side through the oil conveying grooves, and the oil conveying pipe is connected to the bottom of the centered hemispherical rolling grooves. The rigid wear-resistant ball is not completely attached to the hemispherical rolling groove, so that friction resistance between the rigid wear-resistant ball and the hemispherical rolling groove can be reduced, and random rotation of the rigid wear-resistant ball is facilitated.
And each rigid wear-resistant ball on the rigid support plate is positioned at the same horizontal plane height, and the rigid wear-resistant balls are in point contact with the upper connecting plate. The rigid wear-resistant balls not only can support the top beam of the station to transfer vertical load, but also can reduce frictional resistance between the rigid wear-resistant balls and the lower surface of the upper connecting plate, and when horizontal earthquake force and the running direction of the subway station form any angle, the support columns and the top beam of the station can slide freely.
The multistage anti-seismic dampers are horizontally arranged, a plurality of first support grooves which are distributed at intervals are formed in the inner wall surface of the rigid annular enclosing baffle and correspond to the arrangement positions of the multistage anti-seismic dampers, and a plurality of second support grooves which are distributed at intervals are formed in the outer wall surface of the rigid supporting plate and correspond to the arrangement positions of the multistage anti-seismic dampers; one end of the multistage anti-seismic damper is correspondingly arranged in the first support groove, and the other end of the multistage anti-seismic damper is correspondingly arranged in the second support groove.
The multistage anti-seismic damper comprises a first anti-seismic cylinder and a second anti-seismic cylinder which are in threaded butt joint with each other;
a first spherical hinge support is arranged on the outer wall surface of the end plate of the first anti-seismic cylinder and correspondingly assembled in the first support groove; a first multistage damping spring mechanism is arranged in the cavity of the first anti-seismic cylinder, one end of the first multistage damping spring mechanism is fixedly connected with the end plate of the first anti-seismic cylinder, and the other end of the first multistage damping spring mechanism is in a free state;
a T-shaped pulling and pressing rod is arranged in the second anti-seismic barrel, the T-shaped pulling and pressing rod consists of a bearing plate and a connecting rod, the bearing plate is slidably assembled on the inner wall surface of the second anti-seismic barrel, one end of the connecting rod is welded with the bearing plate, the other end of the connecting rod penetrates through an end plate of the second anti-seismic barrel and extends outwards to be connected with a second spherical hinge support, and the second spherical hinge support is correspondingly assembled in the second support groove; a second multistage damping spring mechanism is sleeved on the connecting rod between the bearing plate and the second anti-seismic cylinder end plate, one end of the second multistage damping spring mechanism is fixedly connected with the second anti-seismic cylinder end plate, and the other end of the second multistage damping spring mechanism is in a free state;
the first multistage damping spring mechanism and the second multistage damping spring mechanism are identical in structure and are symmetrically arranged; the first multi-stage damping spring mechanism and the second multi-stage damping spring mechanism comprise a primary damping spring, a secondary damping spring and a tertiary damping spring which are coaxially sleeved, wherein the lengths of the primary damping spring, the secondary damping spring and the tertiary damping spring are sequentially decreased progressively and are sleeved from inside to outside;
the damping springs are made of spring steel 65Mn or 60Si2Mn or 50CrVA, have high strength, good elasticity, good plasticity and toughness, and have stronger tensile strength, compressive strength, elastic limit and fatigue strength under impact, vibration or long-term alternating stress, so that the damping springs exert better damping and energy consumption effects.
The first spherical hinge support and the second spherical hinge support have the same structure and comprise a first hinge seat with a first boss and a second hinge seat with a second boss, the first boss of the first hinge seat and the second boss of the second hinge seat are mutually overlapped and matched, a row of mutually communicated pin holes are formed between the first boss and the second boss, and pin bolts are inserted into the pin holes to connect the first hinge seat and the second hinge seat into a whole; the first hinge seat and the second hinge seat are spliced to form a spherical hinge groove, and a spherical hinge is arranged in the spherical hinge groove;
when an earthquake occurs, the vibration direction is random and arbitrary, and the known spherical hinge support can rotate at any angle to increase the degree of freedom of a structural member, so that the spherical hinge support can enable the multistage anti-vibration damper to be parallel to the earthquake force in real time, and the damping energy consumption effect of the multistage anti-vibration damper can reach the optimal state;
when an earthquake occurs, the T-shaped tension compression rod can extrude the multistage damping spring mechanisms in the first earthquake-resistant cylinder and the second earthquake-resistant cylinder along with the cyclic reciprocation of the earthquake magnitude or the structural displacement, so that the damping and energy consumption effects are realized;
when an earthquake occurs, the earthquake grades are different, the rolling support needs to dissipate energy differently, the earthquake intensity is different, the sliding displacement change scale between the station top beam and the support column is different, the multistage damping spring mechanisms with length differences are adopted to be matched with each other, when the sliding displacement size between the station top beam and the support column reaches a certain critical value (when in medium earthquake or medium intensity), the T-shaped tension compression rod is just contacted with the secondary damping springs at any side, the secondary damping springs are automatically started through the sliding displacement scale change between the station top beam and the support column, and the multistage earthquake resistance of the rolling support is realized by analogy of other grades;
the damping springs with different elastic coefficients and lengths can be designed according to the intensity of different areas or the structural displacement change of actual measurement, and the requirements of graded damping energy consumption of different areas and different structural positions can be met.
The first anti-seismic cylinder and the second anti-seismic cylinder have the same inner diameter, and the open ends of the first anti-seismic cylinder and the second anti-seismic cylinder are in threaded butt joint.
The invention has the advantages that:
(1) When the horizontal earthquake force and the running direction of the subway station form any angle, the balls annularly arranged in the support can roll randomly according to the change of the vibration direction, so that multi-dimensional sliding between the top beam and the support column is realized, and the whole collapse of the subway station caused by the damage of the support column is avoided;
(2) The constraint between the support column and the top beam is released, the integrity of the station structure is damaged, the vibration amplitude of the station is increased under the earthquake action, the horizontal multi-dimensional earthquake resistance energy consumption of the rolling support is realized by annularly arranging a horizontal multi-stage earthquake resistance damper and a spherical hinge to respond to the vibration direction change, and the stability of the station structure is ensured under the earthquake action;
(3) According to the displacement change between the top beam and the support column caused by vibration, when the displacement reaches a certain critical value, the secondary or tertiary vibration resistance is automatically started, when the displacement falls to a certain critical value, the secondary or tertiary vibration resistance is automatically closed, the rolling support is changed along with the displacement, the opening and closing of the multistage vibration resistance damper is automatically adjusted, and the support achieves the aim of multistage vibration resistance and energy consumption.
Drawings
FIG. 1 is a horizontal multi-dimensional multi-stage shock absorbing energy dissipating roller support of the present invention;
FIG. 2 is a three-dimensional schematic view of an upper seat pan of the present invention;
FIG. 3 is a three-dimensional schematic view of a lower seat pan of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 1 in accordance with the present invention;
FIG. 5 is a cross-sectional view B-B of FIG. 1 in accordance with the present invention;
FIG. 6 is a schematic view of a multi-stage shock absorber of the present invention;
FIG. 7 is a schematic view of a first shock tube according to the present invention;
FIG. 8 is a schematic view of a second anti-knock cartridge according to the present invention;
FIG. 9 is a schematic view of a T-shaped tension strut according to the present invention;
FIG. 10 is a cross-sectional view of the C-C of FIG. 6 in accordance with the present invention;
FIG. 11 is a D-D sectional view of FIG. 6 according to the present invention;
FIG. 12 is a schematic view of a spherical hinge support according to the present invention;
fig. 13 is a sectional view of the fig. 12E-E according to the present invention.
As shown in fig. 1-13, the labels in the figures are respectively:
the device comprises an upper seat board 1, a lower seat board 2, a multi-stage anti-seismic damper 3, an oil transportation system 4, a top beam 5 and a support column 6;
the device comprises an upper connecting plate 11, a rigid annular surrounding baffle 12, a first support groove 13, a rigid threaded pipe 14 and a bolt 15;
the device comprises a rigid supporting plate 21, a lower connecting plate 22, a bolt 23, a hemispherical rolling groove 24, an oil conveying groove 25, an oil filling hole 26, a rigid wear-resistant ball 27, a rigid threaded pipe 28 and a second support groove 29;
the first anti-seismic barrel 31, the second anti-seismic barrel 32, the screw thread 33, the through hole 34, the first threaded hole 35, the first-stage damping spring 36, the second-stage damping spring 37, the third-stage damping spring 38, the first-stage damping spring 39, the second-stage damping spring 310, the third-stage damping spring 311, the T-shaped tension rod 312, the connecting rod 313, the bearing plate 314, the connecting rod 315, the spherical hinge support 316, the first hinge support 317, the second hinge support 318, the first boss 319, the second boss 320, the pin hole 321, the pin bolt 322, the threaded hole 323, the screw 324, the spherical hinge groove 325, the spherical hinge 326 and the threaded hole 327;
an oil delivery pipe 41, an oil storage device 42 and a pressure pump 43.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings, to facilitate understanding by those skilled in the art:
examples: as shown in fig. 1-13, the present embodiment relates to a horizontal multi-dimensional multi-stage damping and energy-consuming rolling support for an underground station support column, which is disposed between a station top beam 5 and a support column 6, and includes an upper seat plate 1 and a lower seat plate 2, wherein the upper seat plate 1 is fixed on the lower surface of the station top beam 5, and the lower seat plate 2 is fixed on the upper surface of the station support column 6. The lower seat board 2 comprises a lower connecting plate 22, a rigid supporting plate 21 and a plurality of rigid wear-resistant balls 27 which are sequentially arranged from bottom to top; the lower surface of the rigid supporting plate 21 is fixed on the lower seat plate 2, a plurality of hemispherical rolling grooves 24 are distributed on the upper surface, and each rigid wear-resistant ball 27 is correspondingly arranged in each hemispherical rolling groove 24; in addition, the upper seat plate 1 is provided with a rigid annular enclosing shield 12 which extends downwards and is sleeved outside the rigid support plate 21, and a plurality of multistage shock-resistant dampers 3 are arranged between the inner wall surface of the rigid annular enclosing shield 12 and the outer wall surface of the rigid support plate 21 along the circumferential direction at intervals.
As shown in fig. 1-5, the upper seat plate 1 is composed of an upper connection plate 11 and a rigid annular enclosure 12. A plurality of rigid threaded pipes 14 are embedded in the lower end part of the station top beam 5, and the ports of the rigid threaded pipes 14 extend to the lower surface of the station top beam 5; the upper connection plate 11 is fastened to the lower surface of the roof rail 5 by screwing bolts 15 into each corresponding rigid threaded pipe 14. The rigid annular enclosure 12 is made of hard high-strength steel and is fixed on the lower surface of the upper connecting plate 11 in a welding manner, as shown in fig. 2 (the upper connecting plate 11 is shown in an inverted manner for clearly showing the distribution manner of the first support grooves 13 in the rigid annular enclosure 12), and the rigid annular enclosure 12 is sleeved on the outer side of the rigid supporting plate 21, so that external dust can be prevented from entering through the enclosure, the service life of the support is prolonged, and the normal working performance of the support can be maintained. A plurality of first support grooves 13 are formed in the inner wall surface of the rigid annular surrounding block 12, and the forming positions of the first support grooves 13 correspond to the arrangement positions of the multistage antivibration dampers 3 and are used for being connected with spherical hinge supports 316 at the end parts of the multistage antivibration dampers 3.
As shown in fig. 1-5, the lower seat plate 2 comprises a lower connecting plate 22, a rigid supporting plate 21, a plurality of rigid wear-resistant balls 27 and an oil delivery system 4; a plurality of rigid threaded pipes 28 are anchored in advance in the upper end parts of the support columns 6, and the ports of the rigid threaded pipes 28 extend to the upper surfaces of the support columns 6; the lower connection plate 22 is fastened to the upper surface of the support column 6 by screwing bolts 23 into each corresponding rigid threaded tube 28. The rigid supporting plate 21 is made of oval or round hard high-strength steel; the rigid support plate 21 is welded to the upper surface of the lower connection plate 22. A hemispherical slot 24 is formed in the center of the upper surface of the rigid support plate 21, and at least one circle of hemispherical slots 24 are formed outside the hemispherical slot 24 formed in the center at intervals in an annular shape, as shown in fig. 3. The rigid wear-resistant balls 27 are respectively arranged in the corresponding hemispherical rolling grooves 24, the rigid wear-resistant balls 27 are not completely attached to the hemispherical rolling grooves 24, so that friction resistance between the rigid wear-resistant balls 27 and the hemispherical rolling grooves 24 can be reduced, and arbitrary rotation of the rigid wear-resistant balls 27 is facilitated; when the horizontal earthquake force and the running direction of the subway station form any angle, the support column 6 and the top beam 5 can slide freely. The rigid wear-resistant balls 27 form point contact with the lower surface of the upper connecting plate 11, so that not only can the top beam of the station be supported to transfer vertical load, but also the friction resistance between the rigid wear-resistant balls 27 and the lower surface of the upper connecting plate 11 can be reduced, and when the horizontal seismic force and the running direction of the subway station form any angle, the support column 6 and the top beam 5 can slide freely. The rigid support plate 21 is also provided with an oil filling hole 26, the oil filling hole 26 is connected into a hemispherical rolling groove 24 which is arranged in the middle, the hemispherical rolling groove 24 in the middle is respectively connected with oil delivery grooves 25 with semicircular sections which are respectively arranged between the hemispherical rolling grooves 24 of the outer ring, the oil filling hole 26 is communicated with an oil storage device 42 through an oil delivery pipe 41 and a pressure pump 43, as shown in fig. 1, the pressure pump 43 and the oil storage device 42 are arranged on the side surface of a support column 6, the pressure pump 43 can pump lubricating oil in the oil storage device 42 into the hemispherical rolling groove 24 in the middle through the oil delivery pipe 41, meanwhile, the lubricating oil in the hemispherical rolling groove 24 in the middle can flow into the hemispherical rolling groove 24 of the outer ring through the oil delivery grooves 25, and the lubricating oil can be delivered to the lower surface of the upper connecting plate 11 under the rolling of the rigid wear-resistant balls 27, so that the friction resistance between the top beam 5 and the support column 6 is reduced. In this embodiment, the rigid wear-resistant ball 27 is made of hard high-strength steel such as high-chromium steel, for example, 9Cr18, G20CrMo, GCr15, etc., and has good rust resistance and high hardness after heat treatment. It should be noted that, a plurality of second support grooves 29 are spaced apart from the outer surface of the rigid support plate 21, and the opening positions of the second support grooves 29 correspond to the arrangement positions of the multi-stage shock-resistant dampers 3, so as to connect with the spherical hinge supports 316 at the end portions of the multi-stage shock-resistant dampers 3.
As shown in fig. 1 and 6-13, the multistage shock-resistant damper 3 is disposed horizontally, and two ends thereof are fixedly connected with the first support groove 13 on the inner wall surface of the rigid annular enclosure 12 and the second support groove 29 on the outer wall surface of the rigid support plate 21 through spherical hinge supports 316, respectively. The main body of the multistage shock-resistant damper 3 comprises a first shock-resistant cylinder 31 and a second shock-resistant cylinder 32, the first shock-resistant cylinder 31 and the second shock-resistant cylinder 32 are cylinders with one end closed and the other end open, the inner diameters of the first shock-resistant cylinder 31 and the second shock-resistant cylinder 32 are the same, and the open ends of the first shock-resistant cylinder 31 and the second shock-resistant cylinder 32 form threaded butt joint through threads 33 to form an integral cylinder.
The inner cavity of the first anti-seismic barrel 31 is provided with a first multistage damping spring mechanism, the first multistage damping spring mechanism comprises a first stage damping spring 36, a second stage damping spring 37 and a third stage damping spring 38 which are coaxially sleeved, one end of each stage damping spring is fixedly connected with an end plate of the first anti-seismic barrel 31, and the other end of each stage damping spring is in a free state. As shown in fig. 7, a threaded hole 35 is formed on the outside of the end plate of the first anti-seismic barrel 31, a link 315 is screwed to the threaded hole 35, and the other end of the link 315 is connected to a ball pivot support 316.
The inner cavity of the second anti-seismic barrel 32 is provided with a T-shaped pulling and pressing rod 312, the T-shaped pulling and pressing rod 312 consists of a round bearing plate 314 and a connecting rod 313 perpendicular to the round bearing plate, the bearing plate 314 is made of disc-shaped steel, and the outer diameter of the bearing plate is slightly smaller than the inner diameters of the first anti-seismic barrel 31 and the second anti-seismic barrel 32 so as to facilitate free sliding in the inner cavity of a barrel formed by the two; one end of the connecting rod 313 is welded with the bearing plate 314, the other end extends out of the cylinder body through the through hole 34 on the end plate of the second anti-seismic cylinder 32, and the end of the connecting rod 313 extending out of the cylinder body is provided with threads to be connected with the spherical hinge support 316. A second multi-stage damper spring mechanism is also sleeved on the connecting rod 313 between the bearing plate 314 and the end plate of the second anti-seismic barrel 32, and the second multi-stage damper spring mechanism comprises a first-stage damper spring 39, a second-stage damper spring 310 and a third-stage damper spring 311 which are coaxially sleeved. One end of each level of damping spring is fixedly connected with the end plate of the second anti-seismic cylinder 32, and the other end of each level of damping spring is in a free state.
The first multi-stage damping spring mechanism and the second multi-stage damping spring mechanism have the same structure and are symmetrically arranged in the cavity of the anti-seismic barrel. In this embodiment, taking the first multi-stage damper spring mechanism as an example, the lengths of the first-stage damper spring 36, the second-stage damper spring 37 and the third-stage damper spring 38 decrease in order, and the diameters increase in order, as shown in fig. 6, in short, the damper springs at each stage can consume seismic forces of different magnitudes in order. The damping springs are made of spring steel 65Mn or 60Si2Mn or 50CrVA, have high strength, good elasticity, good plasticity and toughness, and have stronger tensile strength, compressive strength, elastic limit and fatigue strength under impact, vibration or long-term alternating stress, so that the damping springs exert better damping and energy consumption effects.
As shown in fig. 6, 12 and 13, the spherical hinge supports 316 provided at both ends of the multistage vibration damper 3 are identical in structure, and one side of the spherical hinge support 316 is exemplified. The spherical hinge support 316 specifically comprises a first hinge seat 317 and a second hinge seat 318, wherein a first boss 319 is provided at the rear end of the first hinge seat 317, a second boss 320 is provided at the rear end of the second hinge seat 318, the positions and shapes of the first boss 319 and the second boss 320 are adapted to each other, a row of pin holes 321 are arranged on the first boss 319 and the second boss 320, and pins 322 are inserted into the pin holes 321 to be spliced into a whole after the first boss 319 on the first hinge seat 317 and the second boss 320 on the second hinge seat 318 are overlapped. In addition, a spherical hinge groove 325 is formed on the front end surface of the first hinge seat 317 and the second hinge seat 318 after being spliced, a spherical hinge 326 is assembled in the spherical hinge groove 325, and the spherical hinge groove 325 is not completely attached to the spherical hinge 326, so that the spherical hinge 326 can rotate conveniently; a threaded hole 327 is formed in the ball joint 326 to facilitate connection with the link 315 (or the link 313). It should be further noted that, threaded holes 323 are formed on the first hinge seat 317 and the second hinge seat 318, respectively, so that the spherical hinge support 316 can be fixedly connected with the first support groove 13 on the inner wall surface of the rigid annular enclosure 12 after the screws 324 are screwed into the threaded holes 323, thereby facilitating the replacement of the multistage shock-resistant damper 3.
In this embodiment, when an earthquake occurs, the vibration direction is random and arbitrary, and the spherical hinge 326 is known to rotate at any angle to increase the degree of freedom of the structural member, so that the spherical hinge 326 can keep the multistage antivibration damper 3 parallel to the earthquake force in real time, and the damping and energy consumption effects of the multistage antivibration damper 3 reach an optimal state; the multistage anti-seismic damper 3 which is horizontally and annularly arranged can form connection between the top beam 5 and the support column 6, so that the structural stability of the station is ensured; along with the cyclic reciprocating change of the vibration level or the structural displacement, the T-shaped tension compression rod 312 can extrude the multi-level damping springs in the first anti-seismic cylinder 31 and the second anti-seismic cylinder 32, so as to realize the damping and energy consumption functions; the rolling support is different in vibration grade, the energy to be dissipated is different in earthquake intensity, the sliding displacement change scale between the top beam 5 and the support column 6 is different, the damping springs with the length difference are adopted to be matched with each other, when the sliding displacement size between the top beam 5 and the support column 6 reaches a certain critical value (during medium vibration or medium intensity), the T-shaped tension compression rod 312 is just contacted with the secondary damping spring 37 or the secondary damping spring 310, the secondary damping is automatically started through the sliding displacement scale change between the top beam 5 and the support column 6, and the like in other grades of damping modes, so that the multistage earthquake resistance of the rolling support is realized. The damping springs with different elastic coefficients and lengths can be designed according to the intensity of different areas or the structural displacement change of actual measurement, and the requirements of graded damping energy consumption of different areas and different structural positions can be met.
The beneficial effects of this embodiment lie in:
(1) When the horizontal earthquake force and the running direction of the subway station form any angle, the balls annularly arranged in the support can roll randomly according to the change of the vibration direction, so that multi-dimensional sliding between the top beam and the support column is realized, and the whole collapse of the subway station caused by the damage of the support column is avoided;
(2) The constraint between the support column and the top beam is released, the integrity of the station structure is damaged, the vibration amplitude of the station is increased under the earthquake action, the horizontal multi-dimensional earthquake resistance energy consumption of the rolling support is realized by annularly arranging a horizontal multi-stage earthquake resistance damper and a spherical hinge to respond to the vibration direction change, and the stability of the station structure is ensured under the earthquake action;
(3) According to the displacement change between the top beam and the support column caused by vibration, when the displacement reaches a certain critical value, the secondary or tertiary vibration resistance is automatically started, when the displacement falls to a certain critical value, the secondary or tertiary vibration resistance is automatically closed, the rolling support is changed along with the displacement, the opening and closing of the multistage vibration resistance damper is automatically adjusted, and the support achieves the aim of multistage vibration resistance and energy consumption.
With the above-described preferred embodiments according to the present invention as a teaching, a person skilled in the art can make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. The horizontal multi-dimensional multi-stage damping energy-consumption rolling support for the underground station support column is arranged between a station top beam and the support column and is characterized by comprising an upper seat plate and a lower seat plate; the upper seat board is fixed on the lower surface of the station top beam, and the lower seat board is fixed on the upper surface of the support column; the lower seat plate comprises a lower connecting plate, a rigid supporting plate and a plurality of rigid wear-resistant balls, wherein the lower surface of the rigid supporting plate is fixed on the lower connecting plate, a plurality of hemispherical rolling grooves are distributed on the upper surface of the rigid supporting plate, and each rigid wear-resistant ball is correspondingly arranged in each hemispherical rolling groove; the upper seat plate is provided with a rigid annular enclosing baffle which extends downwards and is sleeved on the outer side of the rigid support plate, and a plurality of multistage shock-resistant dampers are arranged between the inner wall surface of the rigid annular enclosing baffle and the outer wall surface of the rigid support plate along the annular interval.
2. A horizontal multi-dimensional, multi-stage shock absorbing, energy dissipating roller mount for an underground station support column according to claim 1, wherein said upper saddle comprises an upper connecting plate and said rigid annular enclosure; the upper connecting plate is fastened on the lower surface of the station top beam through bolts and a rigid threaded pipe, and the rigid threaded pipe is embedded and anchored in the lower surface of the station top beam; the rigid annular surrounding baffle is in welded connection or an integrated casting structure with the upper connecting plate.
3. The horizontal multi-dimensional multi-stage shock absorbing and energy dissipating rolling support for the support column of the underground station according to claim 1, wherein the lower connecting plate is fastened on the upper surface of the support column through bolts and a rigid threaded pipe, and the rigid threaded pipe is embedded and anchored in the upper surface of the support column.
4. The horizontal multi-dimensional multi-stage damping and energy-consuming rolling support for the support column of the underground station according to claim 3, wherein the rigid support plate is welded on the upper surface of the lower connecting plate, oil conveying grooves are formed between the hemispherical rolling grooves on the upper surface of the rigid support plate so as to be communicated with each other, an oil conveying pipe is connected into at least one hemispherical rolling groove, one end of the oil conveying pipe is connected into the bottom of the hemispherical rolling groove, and the other end of the oil conveying pipe is communicated with an oil storage device through a pressure pump.
5. The horizontal multi-dimensional multi-stage damping and energy-consuming rolling support for the underground station support column according to claim 4, wherein the center of the upper surface of the rigid support plate is provided with a hemispherical rolling groove, at least one circle of hemispherical rolling grooves are formed on the outer side of the hemispherical rolling groove at annular intervals by taking the centered hemispherical rolling groove as the center, the centered hemispherical rolling groove is respectively communicated with the hemispherical rolling grooves on the outer side through the oil conveying grooves, and the oil conveying pipe is connected to the bottom of the centered hemispherical rolling groove.
6. A horizontal multi-dimensional multistage shock absorbing and energy dissipating rolling support for an underground station support column according to claim 2, wherein the rigid wear balls on the rigid support plate are at the same level, and the rigid wear balls are in point contact with the upper connecting plate.
7. The horizontal multi-dimensional multi-stage shock-absorbing energy-consuming rolling support for the underground station support column according to claim 1, wherein the multi-stage shock-absorbing dampers are horizontally arranged, a plurality of first support grooves which are distributed at intervals are formed on the inner wall surface of the rigid annular enclosure and correspond to the arrangement positions of the multi-stage shock-absorbing dampers, and a plurality of second support grooves which are distributed at intervals are formed on the outer wall surface of the rigid support plate and correspond to the arrangement positions of the multi-stage shock-absorbing dampers; one end of the multistage anti-seismic damper is correspondingly arranged in the first support groove, and the other end of the multistage anti-seismic damper is correspondingly arranged in the second support groove.
8. A horizontal multi-dimensional multi-stage shock absorbing and energy dissipating roller mount for an underground station support column according to claim 7, wherein the multi-stage shock absorber comprises a first shock tube and a second shock tube threadedly engaged with each other;
a first spherical hinge support is arranged on the outer wall surface of the end plate of the first anti-seismic cylinder and correspondingly assembled in the first support groove; a first multistage damping spring mechanism is arranged in the cavity of the first anti-seismic cylinder, one end of the first multistage damping spring mechanism is fixedly connected with the end plate of the first anti-seismic cylinder, and the other end of the first multistage damping spring mechanism is in a free state;
a T-shaped pulling and pressing rod is arranged in the second anti-seismic barrel, the T-shaped pulling and pressing rod consists of a bearing plate and a connecting rod, the bearing plate is slidably assembled on the inner wall surface of the second anti-seismic barrel, one end of the connecting rod is welded with the bearing plate, the other end of the connecting rod penetrates through an end plate of the second anti-seismic barrel and extends outwards to be connected with a second spherical hinge support, and the second spherical hinge support is correspondingly assembled in the second support groove; a second multistage damping spring mechanism is sleeved on the connecting rod between the bearing plate and the second anti-seismic cylinder end plate, one end of the second multistage damping spring mechanism is fixedly connected with the second anti-seismic cylinder end plate, and the other end of the second multistage damping spring mechanism is in a free state;
the first multistage damping spring mechanism and the second multistage damping spring mechanism are identical in structure and are symmetrically arranged; the first multistage damping spring mechanism and the second multistage damping spring mechanism comprise a first stage damping spring, a second stage damping spring and a third stage damping spring which are coaxially sleeved, the lengths of the first stage damping spring, the second stage damping spring and the third stage damping spring are sequentially decreased and sleeved from inside to outside, and the elastic coefficient of the damping spring is designed according to the anti-seismic grade.
9. The horizontal multi-dimensional multi-stage damping energy-consuming rolling support for the underground station support column according to claim 8, wherein the first spherical hinge support and the second spherical hinge support have the same structure, and the horizontal multi-stage damping energy-consuming rolling support comprises a first hinge support with a first boss and a second hinge support with a second boss, wherein the first boss of the first hinge support and the second boss of the second hinge support are mutually overlapped and matched, a row of mutually communicated pin holes are formed between the first boss and the second boss, and pin bolts are inserted into the pin holes to connect the first hinge support and the second hinge support into a whole; the first hinge support and the second hinge support are spliced to form a spherical hinge groove, and a spherical hinge is arranged in the spherical hinge groove.
10. A horizontal multi-dimensional, multi-stage shock absorbing, energy dissipating roll mount for an underground station support column according to claim 8, wherein the first shock resistant barrel and the second shock resistant barrel have the same inside diameter and the open ends of the two are threaded into abutment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310062408.0A CN116411641A (en) | 2023-01-18 | 2023-01-18 | Horizontal multi-dimensional multi-stage damping energy-consumption rolling support for underground station support column |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310062408.0A CN116411641A (en) | 2023-01-18 | 2023-01-18 | Horizontal multi-dimensional multi-stage damping energy-consumption rolling support for underground station support column |
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| CN (1) | CN116411641A (en) |
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