CN117432094A - Subway upper cover vibration double-control system and subway upper cover building structure system - Google Patents
Subway upper cover vibration double-control system and subway upper cover building structure system Download PDFInfo
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- CN117432094A CN117432094A CN202311763778.3A CN202311763778A CN117432094A CN 117432094 A CN117432094 A CN 117432094A CN 202311763778 A CN202311763778 A CN 202311763778A CN 117432094 A CN117432094 A CN 117432094A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 48
- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- 238000002955 isolation Methods 0.000 claims description 101
- 239000010410 layer Substances 0.000 claims description 28
- 229920001971 elastomer Polymers 0.000 claims description 21
- 229920002635 polyurethane Polymers 0.000 claims description 20
- 239000004814 polyurethane Substances 0.000 claims description 20
- 230000009977 dual effect Effects 0.000 claims description 16
- 235000013372 meat Nutrition 0.000 claims description 12
- 239000011229 interlayer Substances 0.000 claims description 5
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- 238000005452 bending Methods 0.000 description 10
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention discloses a subway upper cover vibration double-control system and a subway upper cover building structure system. The vibration double-control system comprises a vibration double-control support, a frequency regulating element and a conversion layer, wherein: the top layer of the under-cover structure is provided with the conversion layer and is used for supporting the vibration double-control support; the vibration double-control support is arranged below a column position at the bottom of the cover structure, is supported on a frame column of the cover structure at a position corresponding to the column position, is supported on a conversion beam of the conversion layer at a position not corresponding to the column position, and is provided with inclined columns/inclined struts at the conversion beam where the vibration double-control support is positioned at the position not corresponding to the column position, and is connected with frame columns or beam column nodes adjacent to the cover structure; the frequency regulating element is arranged between the vibration double-control support and the conversion layer in series with the vibration double-control support and is used for reducing the natural frequency of the system. The invention can be applied to the throat area of the subway and mainly solves the problem of vertical vibration, in particular to the condition that the vertical members are discontinuous under the upper cover.
Description
Technical Field
The invention belongs to the technical field of building structures, and particularly relates to a building vibration isolation/shock technology, in particular to a subway upper cover shock dual-control system and a subway upper cover building structure system.
Background
By 2023, urban rail operation is opened in over 50 cities in China, and along with the development of urban public transportation and the restriction of land utilization factors, the development of subways focuses on the utilization of vertical space, and the development mode of subway covers gradually becomes the main direction of intensive development. However, vibrations generated by wheel-rail interactions due to frequent operation of subway trains can greatly affect normal life of people. How to effectively reduce and eliminate the influence of subway vibration on the upper cover property becomes a main technical problem to be solved in development of the subway upper cover property. At present, three main control measures for subway vibration are to perform vibration isolation in a propagation path, increase the damping of a vibration source and perform vibration isolation of a building structure. The vibration reduction mode of the building is mainly a mode of adopting a floating floor slab, house indoor vibration isolation and a mode of arranging a vibration isolation support on a base, wherein the vibration isolation effect of the mode of arranging the vibration isolation support on the base is best through comparative research.
For the mode of arranging vibration isolation supports on the foundation, the conventional building vibration isolation supports mainly comprise rubber vibration isolation supports and friction pendulum vibration isolation supports, and through years of development, the horizontal earthquake isolation technology is mature. The conventional shock insulation support has good horizontal rigidity, however, the support cannot have good vibration isolation effect under the excitation influence of subway vibration and the like, so that the comfort level of an upper structure is influenced; on the other hand, when a large vertical earthquake occurs to a common horizontal vibration isolation support, uneven settlement is easily caused due to different vertical internal forces born by the supports. To cope with this problem, it is generally considered to reduce the vertical stiffness of the support, for example, students have proposed three-dimensional vibration isolation supports capable of reducing vertical vibration, and the proposed arrangements adopt thick-meat rubber, coil springs, disc springs and the like in combination with the vibration isolation supports to form novel three-dimensional vibration isolation supports capable of simultaneously controlling vertical vibration and horizontal earthquake action.
However, the vertical members are discontinuous under the upper cover of the throat area of the subway, and the amplified response of the vertical vibration is more obvious, so that the common three-dimensional vibration isolation (vibration) support is still not easy to meet the requirement of comfort level. Therefore, how to effectively solve the problem of vertical vibration in the throat area of the subway, especially when the vertical members are discontinuous under the upper cover, is urgent.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a vibration and vibration dual-control system for a subway upper cover, which is mainly applied to a subway throat area to solve the problems of vertical vibration and horizontal earthquake, in particular to the condition that vertical components under the upper cover are discontinuous.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the invention firstly provides a vibration and vibration dual-control system of a subway upper cover, which is used for interlayer vibration isolation/vibration of a cover upper structure and a cover lower structure, wherein the cover upper structure comprises frame columns corresponding to the positions of the cover lower structure columns and frame columns not corresponding to the positions of the cover lower structure columns, and the vibration and vibration dual-control system comprises a vibration and vibration dual-control support, a frequency regulating element and a conversion layer, wherein:
the top layer of the under-cover structure is provided with the conversion layer for supporting the vibration double-control support;
the vibration double-control support is arranged below a column position at the bottom of the cover structure, is supported on a frame column of the cover structure at a position corresponding to the column position, is supported on a conversion beam of the conversion layer at a position not corresponding to the column position, and is provided with inclined columns/inclined struts at the conversion beam where the vibration double-control support is positioned at the position not corresponding to the column position, and is connected with frame columns or beam column nodes adjacent to the cover structure;
the frequency regulating element is arranged between the vibration double-control support and the conversion layer in series with the vibration double-control support and is used for reducing the natural frequency of the system.
In some embodiments, the vibration dual control mount includes an upper seat plate, a lower seat plate, and a vertical vibration isolation element disposed between the upper seat plate and the lower seat plate.
In some embodiments, the vibration dual-control support is a three-dimensional friction pendulum support-spiral spring type, a three-dimensional friction pendulum support-thick meat rubber type or a three-dimensional friction pendulum support-disc spring type, and the vertical vibration isolation element is a spiral spring, a thick meat rubber type or a disc spring type.
In some embodiments, the frequency modulating element is a polyurethane pad, attached between the bottom of the lower seat plate and the top of the conversion layer.
In some embodiments, the polyurethane pad has a thickness of 20-30mm.
In some embodiments, the upper seat plate is fixedly connected with the upper piers of the cover upper structure by a plurality of upper bolts passing through the upper seat plate, the lower seat plate is fixedly connected with the lower piers of the cover lower structure by a plurality of lower bolts passing through the lower seat plate, and a plurality of lower bolts passing through the polyurethane pads.
In some embodiments, a vertical gap is reserved between the end of the lower bolt and the upper surface of the lower seat plate.
In some embodiments, the vertical clearance is 5-20mm.
In some embodiments, the frequency control element reduces the natural frequency of the structure from 3.5Hz, 7Hz and 8Hz to 2.6Hz, 4.1Hz and 4.4Hz for coil spring type, disc spring type and thick meat rubber type vibration dual control supports.
The invention further provides a subway upper cover building structure system, which comprises an upper cover structure and a lower cover structure, wherein the vibration double-control system is arranged between the upper cover structure and the lower cover structure.
The beneficial effects are that: the invention provides a vibration double-control system for a subway upper cover, which is mainly applied to a subway throat area to solve the problem of vertical vibration, and particularly has the following advantages compared with the prior art when the vertical members under the upper cover are discontinuous:
1. from the perspective of the component (vibration dual control support):
(1) Compared with a common vibration isolation support, the vibration double-control support is provided with vertical vibration isolation elements such as a spiral spring, thick meat rubber, a disc spring and the like, so that the vertical rigidity of the support can be reduced, and the vibration double-control support has vertical vibration control capability.
(2) Compared with the three-dimensional vibration double-control support, the vibration isolation element system of the polyurethane cushion series vibration double-control support is added below the lower seat plate, so that the natural frequency of the system can be further reduced. The result shows that for the general spiral spring type, disc spring type and thick meat rubber type three-dimensional vibration double-control support, the system frequency can be reduced from 3.5Hz, 7Hz and 8Hz to 2.6Hz, 4.1Hz and 4.4Hz respectively after the polyurethane pads are connected in series, and the effect is obvious.
(3) A certain gap is reserved between the anchor bolt and the lower seat plate, so that the anchor bolt is not in direct contact with the lower seat plate, vertical vibration deformation can be well dealt with, and meanwhile convenience is brought to construction.
2. From the structural system (conversion layer) point of view:
(1) Aiming at the vibration (vertical) problem, compared with a common subway upper cover layer interval vibration (vibration) system, a vibration isolation (vibration) conversion layer is arranged, a scheme of converting inclined columns or inclined struts is adopted, a vibration double-control support under the upper structural column position is supported, and the problem of large bending vibration response of a conversion beam is reduced.
(2) To the earthquake (horizontal) problem, arrange batter post or bracing under shaking double control support place roof beam can make each support warp evenly, prevent that the conversion roof beam from receiving the bending deformation and leading to the structure to take place the slope for subway upper cover shakes and shakes double control system adaptation inhomogeneous settlement problem that can be better, and has stronger anti-capsizing ability.
It should be understood that the implementation of any of the embodiments of the invention is not intended to simultaneously possess or achieve some or all of the above-described benefits.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, but rather by the claims.
FIG. 1 is a layout diagram of a vibration dual-control system of a subway upper cover in an embodiment of the invention;
fig. 2 is a schematic diagram of a connection between a diagonal column and a diagonal brace at a conversion beam where a vibration dual-control support is located, where (a) the diagonal column and the diagonal brace are connected to adjacent beam column nodes, and (b) the diagonal column and the diagonal brace are connected to adjacent frame columns;
fig. 3a is a schematic diagram of a variation curve of vibration isolation efficiency of vertical acceleration of the upper cover structure along with vibration isolation frequency;
fig. 3b is a schematic diagram of a graph showing the variation of the vibration isolation efficiency of the vertical vibration level of the upper cover structure along with the vibration isolation frequency;
fig. 4a is a schematic diagram of a variation curve of vibration isolation efficiency of vertical acceleration of the upper cover structure according to vibration isolation frequency ratio;
fig. 4b is a schematic diagram of a variation curve of the vibration isolation efficiency of the vertical vibration level of the upper cover structure according to the vibration isolation frequency ratio;
FIG. 5 is an enlarged partial schematic view of FIG. 1;
FIG. 6 is a schematic diagram of the overall structure of a vibration dual-control support according to an embodiment of the present invention;
FIG. 7 is a schematic view of a partial structure of the vibration dual-control mount shown in FIG. 6;
FIG. 8 is a schematic partial cross-sectional view of the vibration dual-control mount of FIG. 6;
FIG. 9 is a schematic diagram of the overall structure of a vibration dual-control support according to an embodiment of the present invention;
FIG. 10 is a schematic view of a partial structure of the vibration dual-control mount shown in FIG. 9;
FIG. 11 is a schematic partial cross-sectional view of the vibration dual control mount of FIG. 9;
FIG. 12 is a schematic view of the overall structure of a vibration dual-control support according to an embodiment of the present invention;
FIG. 13 is a schematic view of a partial structure of the vibration dual-control mount shown in FIG. 12;
fig. 14 is a schematic partial cross-sectional view of the vibration dual control mount of fig. 12.
Reference numerals illustrate:
vibration double-control support 1, upper seat plate 11, lower seat plate 12, vertical vibration isolation element 13, upper spherical slide plate 131, lower spherical slide plate 132, slide block 133, upper bolt 14 and lower bolt 15;
a frequency control element 2;
the frame column 3 and the column position correspond to the frame column 31 and the column position does not correspond to the frame column 32;
a frame beam 4;
a conversion beam 5;
a diagonal column/brace 6;
an upper buttress 7;
and a lower buttress 8.
Like or corresponding reference characters indicate like or corresponding parts throughout the several views.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the embodiments and the accompanying drawings. The exemplary embodiments of the present invention and their descriptions herein are for the purpose of explaining the present invention, but are not to be construed as limiting the invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be understood that the terms "comprises/comprising," "consists of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method as desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," and the like, does not exclude the presence of other like elements in a product, apparatus, process, or method that includes the element.
It is further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship based on that shown in the drawings, merely to facilitate describing the present invention and to simplify the description, and do not indicate or imply that the devices, components, or structures referred to must have a particular orientation, be configured or operated in a particular orientation, and are not to be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The throat area of the subway vehicle section refers to an area where a train enters and exits a parking train inspection warehouse, the number of turnouts, track strands and staggers is large, and the ground vibration response of the vehicle is large. Train vibration severely affects the comfort of the covered structure.
In a subway throat area, under-cover building functions are generally column inspection libraries, garage and the like, the building functions require larger column spacing, and on-cover building functions are mainly offices, houses or co-constructions and the like, so that the building functions are generally smaller in column spacing, and the problem of discontinuity exists in an under-cover vertical component (frame column) on the cover, and the frame column of a conversion beam bearing upper structure is inevitably required to be arranged. On the other hand, since the vibration wave has amplification phenomena in the vibration response of the vibration wave near the natural vibration frequency of the bending vibration of the lower structural horizontal member and the natural vibration frequency of the axial vibration of the vertical member, and the dynamic amplification effect of the bending vibration horizontal conversion member on the vertical vibration wave is more remarkable, the response of the frame beam under the vertical vibration of the frame column is larger than that of the frame column. Therefore, the frequency of the input vibration excitation of the subway in the throat area of the subway is easy to approach the self-vibration frequency of the lower structure, and the vibration isolation effect of the upper structure is obviously weakened.
The research on an interlayer vibration isolation structure system and a design method aiming at the influence of subway vibration is less, and the interlayer vibration isolation requirement of a common vibration isolation support is difficult to meet.
Based on the above, the invention designs a vibration double-control system for the upper cover of a subway, which is used for interlayer vibration isolation/vibration of an upper cover structure and a lower cover structure, and is mainly realized by a vibration double-control support 1, a frequency control element 2 and a conversion layer, specifically, from two angles of a component and a system, the vibration double-control support and the frequency control element are connected in series in terms of the component, and from the vibration isolation (vibration) layer, a conversion diagonal column/diagonal brace is arranged, so that better vibration control effect is achieved, the comfort level of the structure is improved, the problem of bending deformation of a conversion beam under the earthquake is solved, and the good vibration double-control aim is realized for the throat area of the upper cover of the subway. The subway upper cover vibration double-control system can better adapt to the problem of uneven settlement and has stronger anti-overturning capability.
In order to better understand the above technical solution, the following detailed description will refer to the accompanying drawings and specific embodiments.
Referring to fig. 1, the covered structure includes frame columns 3 and frame beams 4, and in the throat area of the subway, the covered structure and the covered structure bear different functions, and the covered structure have a discontinuous problem, specifically, the covered structure includes not only column positions corresponding to frame columns 31, i.e. corresponding to column positions of the covered structure, but also column positions not corresponding to frame columns 32, i.e. not corresponding to column positions of the covered structure.
Because the column positions of the structure under the cover are not corresponding, the vibration double-control support 1 is inevitably supported on the frame beam 4 of the structure under the cover, and the frame beam 4 is easy to incline and unevenly subside due to bending deformation, and thus the power amplification effect on vertical vibration waves is generated.
Specifically, all vibration double-control supports 1 are arranged below the bottom column position of the cover structure, supported on frame columns 3 of the cover structure at positions corresponding to the column positions, supported on conversion beams 5 of the conversion layer at positions not corresponding to the column positions, and inclined columns/diagonal braces 6 are arranged at the conversion beams 5 where the vibration double-control supports 1 are located at positions not corresponding to the column positions and are connected with frame columns or beam column nodes adjacent to the cover structure, as shown in fig. 2, wherein (a) the conversion beams where the vibration double-control supports are located are connected with adjacent beam column nodes, and (b) the mode similar to a corner brace connected with the frame columns can be selected at the conversion beams where the vibration double-control supports are located. On the structural system, through setting up the conversion layer, thereby arrange the scheme of batter post/bracing under the conversion roof beam in order to reduce the power amplification effect of conversion roof beam and control vibration to make the support deformation even, prevent that the conversion roof beam from receiving the bending deformation to lead to the structure to take place to incline in order to control the earthquake response.
The invention shows that for the interval vibration (vibration) structure of the subway upper cover layer, the vibration response transmitted to the upper cover structure by the lower cover structure is related to the designed vibration isolation frequency of the vibration isolation (vibration) layer. When the upper column position and the lower column position are not corresponding, the vertical vibration response is obviously amplified. Taking the study of a subway upper cover as an example, the section of a column is 2m multiplied by 2m, and the height is 6m; the beam section is 1.2mx2m, the span is 9m, the axial self-vibration frequency of the vertical component is calculated to be 25Hz, the self-vibration frequency of bending vibration is calculated to be 10Hz, the dynamic amplification effect of the horizontal conversion component of the bending vibration on the vertical vibration wave is more obvious, the vibration isolation effect is obviously weakened, and therefore, the reduction of the vibration isolation frequency is very important.
As shown in fig. 3a, fig. 3a shows a variation curve of vertical acceleration vibration isolation efficiency of the upper cover structure along with vibration isolation frequency, a horizontal axis f is vibration isolation design frequency, a vertical axis α is acceleration vibration isolation efficiency, the vibration isolation efficiency is obviously improved from 2.5Hz to 3.5Hz under the condition that upper and lower column positions are corresponding, and the vibration isolation efficiency is more obviously improved when the upper and lower column positions are not corresponding. Similarly, fig. 3b shows a graph of the vertical vibration isolation efficiency of the upper cover structure along with the vibration isolation frequency, and similar to fig. 3a, the vibration isolation efficiency is remarkably improved from 2.5Hz to 3.5 Hz.
If the beta value is used as the excitation frequency omega of the vibration source and the natural frequency omega of the vibration isolation system n The ratio, i.e. vibration isolation frequency ratio β=ω/ω n Taking a spiral spring type three-dimensional vibration dual-control support as an example, as shown in fig. 4a, fig. 4a shows a variation curve of vertical acceleration vibration isolation efficiency of an upper cover structure along with vibration isolation frequency ratio, wherein the horizontal axis beta is vibration isolation frequency ratio, the vertical axis alpha is acceleration vibration isolation efficiency, when the upper column position and the lower column position are not corresponding, when the excitation frequency of a vibration source on a beam is lower than 10Hz, the natural frequency of a vibration isolation system is 3.5Hz, beta=10/3.5=2.9, and when the natural frequency of the vibration isolation system is reduced to 2.5Hz, beta=10/2.5=4, the vibration isolation efficiency of vertical acceleration can be improved from 70% to 50%, so that the transmission of vertical vibration is obviously weakened. Fig. 4b shows a variation curve of vibration isolation efficiency of the vertical vibration level of the upper cover structure along with the vibration isolation frequency ratio, and similarly, if the natural frequency of the vibration isolation system is reduced to 2.5Hz, the vibration isolation efficiency of the vertical vibration level is also obviously improved.
Although vibration isolation efficiency can be improved along with further reduction of natural frequency of a vibration isolation system, on the other hand, if a mode of further reducing the frequency of vibration isolation elements is directly adopted, the requirement on a three-dimensional vibration isolation support is high, the cost is high and the vibration isolation is difficult to realize, so that the mode of considering the series vibration isolation elements is the most effective mode of reducing the vibration isolation frequency of a vibration isolation (vibration isolation) layer.
Based on the above, as shown in fig. 5, the vibration double-control support 1 is arranged between the upper cover structure and the lower cover structure, and the bottom of the vibration double-control support 1 is connected with the frequency regulating element 2 in series, on the component, the vibration double-control support 1 using vertical vibration isolation elements such as rubber, spiral springs or disc springs is considered, and the frequency regulating element 2 is connected in series, so that the structure frequency is further reduced, and a better vibration control effect is achieved.
In some embodiments, the frequency control element 2 of the present invention preferably adopts a polyurethane pad, which is a preferred choice, and has the advantages of good dynamic load performance, low dynamic-static stiffness ratio, strong load capacity, low self-vibration frequency, and high vibration isolation (vibration) effect. The thickness of the polyurethane pad is determined according to engineering vibration reduction requirements and bearing capacity requirements, and the thickness of the polyurethane pad is preferably 20-30mm.
The mechanism for reducing the natural frequency of the whole system based on the series mechanism is as follows: for a general three-dimensional vibration double-control support, taking a coil spring type three-dimensional vibration double-control support as an example, the vertical self-vibration frequency k1 of the vibration isolation system is 3.5Hz, the vertical self-vibration frequency k2 of the polyurethane pad is 10Hz, and although k1 is less than k2, the self-vibration frequency of the vibration isolation system after the two are connected in series is 1/(1/k1+1/k 2) =2.6Hz < k1 (3.5 Hz) < k2 (10 Hz), so that the natural frequency of the whole system can be obviously reduced after the two are connected in series.
Similarly, for the disc spring type and thick meat rubber type vibration double-control support, the vertical self-vibration frequency k1 of the vibration isolation system is 7Hz and 8Hz respectively, the vertical self-vibration frequency k2 of the polyurethane pad is 10Hz, and after the two are connected in series, the self-vibration frequency of the vibration isolation system is 1/(1/k1+1/k 2) = (4.1 Hz,4.4 Hz) < k1 (7 Hz,8 Hz) < k2 (10 Hz), and the self-vibration frequency is obviously reduced.
With continued reference to fig. 6, fig. 6 shows a specific structural form of a vibration dual-control support 1, where the vibration dual-control support 1 is a three-dimensional friction pendulum support-spiral spring, and is connected in series with a frequency control element 2 (polyurethane pad), and the upper part is fixedly connected with an upper support pier 7 of a cover structure, and the lower part is fixedly connected with a lower support pier 8 of a cover lower structure (conversion layer), so that the natural frequency of the system is reduced, and vibration control between the cover upper structure and the cover lower structure is realized.
As shown in fig. 7, the three-dimensional friction pendulum support-coil spring type vibration dual-control support 1 includes an upper seat plate 11, a lower seat plate 12, and a vertical vibration isolation element 13 disposed between the upper seat plate 11 and the lower seat plate 12, where the vertical vibration isolation element 13 is a coil spring set. The upper seat plate 11 is fixedly connected with the upper support pier 7 of the cover structure at the upper part, for example, a plurality of upper bolts 14 are embedded in the upper support pier 7, one end of each upper bolt 14 penetrates through the upper seat plate 11 to be fixedly connected with the upper seat plate, and the other end of each upper bolt 14 is embedded in the upper support pier 7; similarly, the lower seat plate 12 is fixedly connected to the lower pier 8 of the under-cover structure at the lower part, for example, a plurality of lower bolts 15 are embedded in the lower pier 8, one end of each lower bolt 15 passes through the lower seat plate 12 to be fixedly connected thereto, the other end of each lower bolt 15 is embedded in the lower pier 8, and the plurality of lower bolts 15 simultaneously pass through the polyurethane pad to integrally fix the polyurethane pad in series on the lower pier 8 of the under-cover structure (conversion layer).
The upper seat plate 11 and the lower seat plate 12 preferably adopt circular planes, a plurality of (for example, four) installation blocks uniformly protrude from the periphery of the circular planes, and bolt holes are formed in the installation blocks for penetrating and fixing the upper bolts 14 and the lower bolts 15.
In the invention, a vertical gap S is reserved between the end of the lower bolt 15 and the upper surface of the lower seat plate 12, namely, the lower bolt 15 is not completely tightly fastened and fixed against the upper surface of the lower seat plate 12, and the vertical gap S is reserved, so that the bolt does not apply fastening force to limit the vertical relative displacement of the vibration double-control support 1 and the lower support pier 8 after the vertical gap S is reserved, and only the horizontal displacement between the two is limited, so that the lower seat plate 12 and the lower support pier 8 are not fixedly connected, namely, do not directly contact and transmit vibration during vertical vibration, and the vertical vibration is not directly transmitted to an upper structure by the bolt, but the vibration is transmitted through a polyurethane pad.
Preferably, the vertical clearance S may take a small value, so long as the end of the lower bolt 15 is not in direct contact with the lower seat plate 12, but too small a clearance will not be well controlled. After the structural load is up, the vertical compression amount of the support is about 1mm in consideration of the amplitude caused by the subway, and based on the vertical compression amount of the amplitude, the vertical clearance S is preferably between 5 and 20mm, and the range ensures the corresponding function and simultaneously ensures convenient construction.
Referring to fig. 8 again, the vertical vibration isolation element 13 of the spiral spring type mainly includes an upper spherical sliding plate 131, a lower spherical sliding plate 132, and a sliding block 133, where the upper spherical sliding plate 131 is disposed in a spherical groove of the upper seat plate 11, the lower spherical sliding plate 132 is disposed in a spherical groove of the lower seat plate 12, the sliding block 133 is disposed between the upper spherical sliding plate 131 and the lower spherical sliding plate 132, in this example, the sliding block 133 is a spiral spring type sliding block, and is composed of a concave cavity, a convex column and a spiral spring, one of the surfaces of the upper spherical sliding plate 131 and the lower spherical sliding plate 132 is provided with a concave cavity, the other surface is provided with a convex column, the concave cavity and the convex column are mutually embedded, the concave cavity and the convex column function is to provide horizontal rigidity for the spiral spring (thick meat rubber, disc spring), and the spiral spring is sleeved on the periphery, so as to realize vertical vibration isolation.
The concave cavities, the convex columns and the spiral springs are arranged in a plurality, one concave cavity, one convex column and one spiral spring form a group, a plurality of groups are arranged between the upper spherical sliding plate 131 and the lower spherical sliding plate 132, and vertical support and vibration isolation (vibration) effect are ensured.
Referring to fig. 9 again, fig. 9 shows another specific structural form of a vibration dual-control support 1, where the vibration dual-control support 1 is a three-dimensional friction pendulum support-thick meat rubber type, and is connected in series with a frequency control element 2 (polyurethane pad), the upper part is fixedly connected with an upper support pier 7 of the cover structure, and the lower part is fixedly connected with a lower support pier 8 of the cover structure (conversion layer), so that the natural frequency of the system is reduced, and vibration control between the cover structure and the lower structure is realized.
As shown in fig. 10, the difference is that the vertical vibration isolation element 13 of the three-dimensional friction pendulum support-thick-meat rubber type vibration dual-control support 1 is a thick-meat rubber group.
As shown in fig. 11, the thick-meat rubber type vertical vibration isolation element 13 also includes an upper spherical sliding plate 131, a lower spherical sliding plate 132, and a sliding block 133, where the upper spherical sliding plate 131 is disposed in a spherical groove of the upper seat plate 11, the lower spherical sliding plate 132 is disposed in a spherical groove of the lower seat plate 12, the sliding block 133 is disposed between the upper spherical sliding plate 131 and the lower spherical sliding plate 132, in this example, the sliding block 133 is a thick-meat rubber type sliding block, and is formed by overlapping multiple layers of thick-meat rubber, one of the surfaces of the upper spherical sliding plate 131 and the lower spherical sliding plate 132 is provided with a concave cavity, the other surface is provided with a convex column, the concave cavity and the convex column are mutually embedded, and the periphery is provided with the thick-meat rubber, so that vertical vibration isolation is realized.
The concave cavity and the convex column are respectively provided with one, are arranged at the center positions of the upper spherical sliding plate 131 and the lower spherical sliding plate 132, and are sleeved with a plurality of layers of thick meat rubber in a ring shape at the periphery, so that the vertical supporting and vibration isolating effects are ensured.
Referring to fig. 12 again, fig. 12 shows another specific structural form of a vibration dual-control support 1, where the vibration dual-control support 1 is a three-dimensional friction pendulum support-disc spring, and is connected in series with a frequency control element 2 (polyurethane pad), the upper part is fixedly connected with an upper support pier 7 of the cover structure, and the lower part is fixedly connected with a lower support pier 8 of the cover structure (conversion layer), so that the natural frequency of the system is reduced, and vibration control between the cover structure and the lower structure is realized.
As shown in fig. 13, the difference is that the vertical vibration isolation element 13 of the three-dimensional friction pendulum support-disc spring type vibration dual-control support 1 is a disc spring group.
As shown in fig. 14, the disc spring type vertical vibration isolation element 13 also includes an upper spherical sliding plate 131, a lower spherical sliding plate 132, and a sliding block 133, where the upper spherical sliding plate 131 is disposed in a spherical groove of the upper seat plate 11, the lower spherical sliding plate 132 is disposed in a spherical groove of the lower seat plate 12, the sliding block 133 is disposed between the upper spherical sliding plate 131 and the lower spherical sliding plate 132, in this example, the sliding block 133 is a disc spring type sliding block, and is composed of multiple groups of disc springs, one of the upper spherical sliding plate 131 and the lower spherical sliding plate 132 is provided with a concave cavity, the other surface is provided with a convex column, the concave cavity and the convex column are mutually embedded, and the periphery is provided with a disc spring, so as to realize vertical vibration isolation.
The concave cavities, the convex columns and the disc springs are arranged in a plurality, one concave cavity, one convex column and one disc spring form a group, a plurality of groups are arranged between the upper spherical surface sliding plate 131 and the lower spherical surface sliding plate 132, and vertical support and vibration isolation (vibration) effect are ensured.
The invention further relates to a subway upper cover building structure system, which comprises an upper cover structure and a lower cover structure, wherein the vibration double-control system is arranged between the upper cover structure and the lower cover structure, so that vertical vibration isolation and horizontal vibration isolation between the upper cover structure and the lower cover structure are realized.
In summary, the system is used for connecting the vertical vibration isolation element and the polyurethane pad in series from two angles of a component and a system aiming at the adverse effect that the vibration isolation (vibration) effect is weakened due to the fact that the upper structure and the conversion beam easily generate a resonance effect, the conversion diagonal column or diagonal brace is arranged on the vibration isolation (vibration) layer, the better vibration control effect is achieved, the comfort level of the structure is improved, the problem of bending deformation of the conversion beam under the earthquake is solved, and the good vibration and vibration double-control aim is achieved for the throat area of the upper cover of the subway.
While several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the invention. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. The utility model provides a subway upper cover shakes and shakes dual control system for cover the interlayer vibration isolation of structure and cover the structure down, cover the structure and include the frame post that corresponds with cover the structure post position down to and the frame post that does not correspond with cover the structure post position down, its characterized in that, this shake dual control system including shake dual control support, frequency regulation and control element and conversion layer, wherein:
the top layer of the under-cover structure is provided with the conversion layer for supporting the vibration double-control support;
the vibration double-control support is arranged below a column position at the bottom of the cover structure, is supported on a frame column of the cover structure at a position corresponding to the column position, is supported on a conversion beam of the conversion layer at a position not corresponding to the column position, and is provided with inclined columns/inclined struts at the conversion beam where the vibration double-control support is positioned at the position not corresponding to the column position, and is connected with frame columns or beam column nodes adjacent to the cover structure;
the frequency regulating element is arranged between the vibration double-control support and the conversion layer in series with the vibration double-control support and is used for reducing the natural frequency of the system.
2. The vibration dual control system according to claim 1, wherein:
the vibration double-control support comprises an upper seat plate, a lower seat plate and a vertical vibration isolation element arranged between the upper seat plate and the lower seat plate.
3. The vibration dual control system according to claim 2, wherein:
the vibration double-control support is a three-dimensional friction pendulum support-spiral spring type, a three-dimensional friction pendulum support-thick meat rubber type or a three-dimensional friction pendulum support-disc spring type, and the vertical vibration isolation element is a spiral spring, thick meat rubber or disc spring.
4. The vibration dual control system according to claim 2, wherein:
the frequency regulating element is a polyurethane pad and is attached between the bottom of the lower seat plate and the top of the conversion layer.
5. The vibration dual control system according to claim 4, wherein:
the thickness of the polyurethane pad is 20-30mm.
6. The vibration dual control system according to claim 4, wherein:
the upper seat plate is fixedly connected with the upper support pier of the cover structure through a plurality of upper bolts penetrating the upper seat plate, the lower seat plate is fixedly connected with the lower support pier of the cover lower structure through a plurality of lower bolts penetrating the lower seat plate, and a plurality of lower bolts penetrating the polyurethane pad.
7. The vibration dual control system according to claim 6, wherein:
a vertical gap is reserved between the end head of the lower bolt and the upper surface of the lower seat plate.
8. The vibration dual control system according to claim 7, wherein:
the vertical clearance is 5-20mm.
9. The vibration dual control system according to claim 1, wherein:
for the spiral spring type, disc spring type and thick meat rubber type vibration double-control support, the frequency regulating element reduces the natural frequency of the structure from 3.5Hz, 7Hz and 8Hz to 2.6Hz, 4.1Hz and 4.4Hz.
10. A subway upper cover building structure system, characterized in that the building structure system comprises an upper cover structure and a lower cover structure, wherein the vibration double control system of any one of claims 1 to 9 is arranged between the upper cover structure and the lower cover structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311763778.3A CN117432094A (en) | 2023-12-21 | 2023-12-21 | Subway upper cover vibration double-control system and subway upper cover building structure system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311763778.3A CN117432094A (en) | 2023-12-21 | 2023-12-21 | Subway upper cover vibration double-control system and subway upper cover building structure system |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203475602U (en) * | 2013-08-01 | 2014-03-12 | 厦门佰地建筑设计有限公司 | Inclined strut conversion structure applied to high-rise buildings |
| CN204805427U (en) * | 2015-07-22 | 2015-11-25 | 丁冠旭 | Bridge damping support |
| CN204919313U (en) * | 2015-08-19 | 2015-12-30 | 中铁二院工程集团有限责任公司 | Novel bridge spring friction pendulum support |
| CN206234313U (en) * | 2016-11-25 | 2017-06-09 | 国网上海市电力公司 | A kind of Combined type vibration isolating device for transformer |
| CN206521824U (en) * | 2017-02-25 | 2017-09-26 | 广东南海国际建筑设计有限公司 | A kind of large span inclined support conversion structure |
| CN108611968A (en) * | 2018-06-07 | 2018-10-02 | 重庆工业职业技术学院 | A kind of bridge vibration damping holder |
| CN108643672A (en) * | 2018-06-04 | 2018-10-12 | 华北理工大学 | Three-dimensional shock damping and insulation device and construction method of installation |
| CN109750765A (en) * | 2019-02-26 | 2019-05-14 | 北京市建筑设计研究院有限公司 | A kind of tension self-shield laminated rubber damping bearing construction and its construction method |
| CN111472267A (en) * | 2020-04-18 | 2020-07-31 | 北京国道通公路设计研究院股份有限公司 | Elastic spherical support for bridge |
| CN211447995U (en) * | 2019-11-18 | 2020-09-08 | 武汉地震工程研究院有限公司 | Two-way harmonious mass shock-absorbing structure system of local shock insulation |
| CN111705919A (en) * | 2020-07-01 | 2020-09-25 | 上海万科企业有限公司 | Shock insulation conversion structure of TOD upper cover plate |
| CN212224743U (en) * | 2020-04-28 | 2020-12-25 | 郑州商学院 | Take commercial and residential integral type building of truss-like conversion layer |
| CN112523363A (en) * | 2020-10-28 | 2021-03-19 | 清华大学 | Three-dimensional vibration isolation support |
| CN115323833A (en) * | 2022-09-20 | 2022-11-11 | 中铁上海设计院集团有限公司 | Design method of seamless cover plate layer structure of vehicle base belt development project |
| CN220080382U (en) * | 2023-06-27 | 2023-11-24 | 天津市双发建筑工程有限公司 | Building shock insulation support |
-
2023
- 2023-12-21 CN CN202311763778.3A patent/CN117432094A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203475602U (en) * | 2013-08-01 | 2014-03-12 | 厦门佰地建筑设计有限公司 | Inclined strut conversion structure applied to high-rise buildings |
| CN204805427U (en) * | 2015-07-22 | 2015-11-25 | 丁冠旭 | Bridge damping support |
| CN204919313U (en) * | 2015-08-19 | 2015-12-30 | 中铁二院工程集团有限责任公司 | Novel bridge spring friction pendulum support |
| CN206234313U (en) * | 2016-11-25 | 2017-06-09 | 国网上海市电力公司 | A kind of Combined type vibration isolating device for transformer |
| CN206521824U (en) * | 2017-02-25 | 2017-09-26 | 广东南海国际建筑设计有限公司 | A kind of large span inclined support conversion structure |
| CN108643672A (en) * | 2018-06-04 | 2018-10-12 | 华北理工大学 | Three-dimensional shock damping and insulation device and construction method of installation |
| CN108611968A (en) * | 2018-06-07 | 2018-10-02 | 重庆工业职业技术学院 | A kind of bridge vibration damping holder |
| CN109750765A (en) * | 2019-02-26 | 2019-05-14 | 北京市建筑设计研究院有限公司 | A kind of tension self-shield laminated rubber damping bearing construction and its construction method |
| CN211447995U (en) * | 2019-11-18 | 2020-09-08 | 武汉地震工程研究院有限公司 | Two-way harmonious mass shock-absorbing structure system of local shock insulation |
| CN111472267A (en) * | 2020-04-18 | 2020-07-31 | 北京国道通公路设计研究院股份有限公司 | Elastic spherical support for bridge |
| CN212224743U (en) * | 2020-04-28 | 2020-12-25 | 郑州商学院 | Take commercial and residential integral type building of truss-like conversion layer |
| CN111705919A (en) * | 2020-07-01 | 2020-09-25 | 上海万科企业有限公司 | Shock insulation conversion structure of TOD upper cover plate |
| CN112523363A (en) * | 2020-10-28 | 2021-03-19 | 清华大学 | Three-dimensional vibration isolation support |
| CN115323833A (en) * | 2022-09-20 | 2022-11-11 | 中铁上海设计院集团有限公司 | Design method of seamless cover plate layer structure of vehicle base belt development project |
| CN220080382U (en) * | 2023-06-27 | 2023-11-24 | 天津市双发建筑工程有限公司 | Building shock insulation support |
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