CN115897839B - Shock absorbing and isolating structure of building - Google Patents
Shock absorbing and isolating structure of building Download PDFInfo
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- CN115897839B CN115897839B CN202310171409.9A CN202310171409A CN115897839B CN 115897839 B CN115897839 B CN 115897839B CN 202310171409 A CN202310171409 A CN 202310171409A CN 115897839 B CN115897839 B CN 115897839B
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Abstract
The invention belongs to the field of earthquake-resistant building construction, and particularly discloses a building earthquake-reduction and isolation structure, which comprises a plurality of earthquake-reduction and isolation units, wherein each earthquake-reduction and isolation unit comprises an associated damping module; the associated damping module comprises a hydraulic cylinder, and the lower end of the hydraulic cylinder is connected with a bearing structure of a building. A hydraulic piston is arranged in the hydraulic cylinder and is in sliding contact with the inner side wall of the hydraulic cylinder. The piston column is fixed at the upper end of the hydraulic piston, penetrates through the hydraulic cylinder and is connected with the structure subjected to shock absorption and isolation. And a spring is arranged between the hydraulic piston and the inner wall of the hydraulic cylinder and is used for driving the hydraulic cylinder to reset. The upper end of the hydraulic cylinder of each associated shock absorbing module is communicated with the lower end of the hydraulic cylinder of the adjacent associated shock absorbing module. The hydraulic cylinder is filled with liquid. The earthquake-resistant unit solves the problems that when the earthquake-resistant units of the existing building earthquake-resistant system face local severe vibration, local deformation of the building ground is easily caused to be overlarge, and a large number of cracks are generated.
Description
Technical Field
The invention belongs to the field of earthquake-resistant building construction, and particularly relates to a seismic isolation structure of a building.
Background
The building structure refers to the selection and practice of materials based on scientific principles for each component of the building. The task is to select a reasonable construction scheme according to the requirements of functions, material properties, stress conditions, construction methods, building images and the like of the building, so as to be used as the basis for comprehensively solving technical problems in building design and carrying out construction drawing design.
The earthquake resistance is a topic which the building structure cannot be wound around, and the building can be protected by adding the earthquake reduction and isolation structure. Some symbolized buildings, any cracks in the ground will have a negative impact on their image.
The existing building adopts a group of independent seismic reduction and isolation units to form a seismic system of the whole building, and each seismic reduction and isolation unit is not directly related. For example, chinese patent publication No. CN110924290B, class No. E04B, discloses a bridge damper, including a bottom bridge seat, a middle cavity penetrating from left to right is provided in the bottom bridge seat, a symmetrical ground beam is disposed on the upper end surface of the middle cavity, an open supporting cavity is provided in the ground beam, a sliding plate is slidably disposed in the middle cavity, symmetrical side connection plates are fixedly disposed on two side end surfaces of the sliding plate, a built-in hydraulic cylinder is fixedly disposed in the side connection plates, a top pad is disposed on the upper side of the built-in hydraulic cylinder and is supported against the ground beam, and a pushing supporting device for supporting and fixing the ground beams on two sides is disposed in the sliding plate.
However, the above-described technical solution has the following problems: the shock absorbers constituting the building anti-seismic system are independent of each other, and when facing local severe vibration, the local deformation of the building ground is easily caused to be too large, so that a large number of cracks are generated.
Disclosure of Invention
The invention provides a building seismic isolation structure, which aims to solve the problem that when the existing building seismic isolation system faces local severe vibration, local deformation of building ground is easily caused to be overlarge, so that a large number of cracks are generated.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a building seismic isolation structure comprises a plurality of seismic isolation units, wherein each seismic isolation unit comprises an associated damping module and an independent damping module; the associated damping module comprises a hydraulic cylinder, and the lower end of the hydraulic cylinder is connected with a bearing structure of the building; a hydraulic piston is arranged in the hydraulic cylinder and can be in sliding contact with the inner side wall of the hydraulic cylinder; the upper end of the hydraulic piston is fixed with a piston column, the piston column penetrates through the upper end of the hydraulic cylinder, the lower end of the independent damping module is connected with the piston column, and the upper end of the independent damping module is connected with a structure subjected to damping and shock insulation; a spring is arranged between the hydraulic piston and the inner wall of the hydraulic cylinder and used for driving the hydraulic piston to reset; the upper end of the hydraulic cylinder of each associated damping module is communicated with the lower end of the hydraulic cylinder of the adjacent associated damping module; the hydraulic cylinder is filled with liquid.
Further, the independent damping module comprises a central column, the upper end of the central column is connected with a structure subjected to damping and isolation, and a plurality of layers of rubber rings are sleeved around the central column; the rubber ring is stacked on the mounting table and fixedly mounted on the mounting table through the reinforcing nails; the center post is not contacted with the mounting table, and the reinforcing nails are not contacted with the ground beam.
Further, the bearing structure comprises a main girder surface, the structure subjected to shock absorption and isolation comprises a ground girder, the main girder surface is the upper surface of a main bearing girder of a building, the ground girder is positioned above the main girder surface, the main girder surface and the ground girder are connected through a plurality of shock absorption and isolation units, and the ground is paved above the ground girder.
The application method of the earthquake reduction and isolation structure of the building comprises the following steps: the degree of influence of the displacement of any hydraulic piston on the displacement of the hydraulic piston in an adjacent hydraulic cylinder is changed by changing the diameter of the piston column.
The beneficial effects of the invention are as follows:
when a certain area of the ground is subjected to larger longitudinal deformation, the ground in the surrounding area is also subjected to certain deformation in the same direction, so that the local larger longitudinal deformation is converted into the deformation which is larger in area, has a certain gradient and is smooth, the ground is prevented from being severely bent, and the possibility of cracks on the ground due to deformation is further reduced. The problems that when the earthquake-resistant units of the existing building earthquake-resistant system face local severe vibration, local deformation of the ground is easily caused to be overlarge and a large number of cracks are generated on the road surface are solved.
Drawings
FIG. 1 is a schematic view of a seismic isolation structure of a building according to an embodiment of the present invention;
fig. 2 is a block diagram of a seismic isolation unit according to an embodiment of the present invention.
In the figure: 100-seismic isolation units, 110-associated damping modules, 111-hydraulic cylinders, 112-hydraulic pistons, 113-piston columns, 114-springs, 120-independent damping modules, 121-center columns, 122-rubber rings, 123-mounting tables, 124-reinforcing nails, 200-main girder surfaces, 300-ground girders and 400-ground.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, the embodiment discloses a seismic isolation structure of a building, which comprises a main girder surface 200 and a ground girder 300, wherein the main girder surface 200 is the upper surface of a main bearing girder of the building, the ground girder 300 is positioned above the main girder surface 200, the main girder surface 200 and the ground girder 300 are connected through a plurality of seismic isolation units 100, and the ground 400 is paved above the ground girder 300.
Referring to fig. 2, the seismic isolation unit 100 includes an independent damping module 120 and an associated damping module 110. The independent damping modules 120 are sensitive, the upper part is fixedly connected with the ground beam 300, and the lower part is connected with the associated damping module 110. The lower part of the associated damping module 110 is fixedly connected with the main girder surface 200.
The independent damping module 120 comprises a central column 121, wherein the upper end of the central column 121 is fixed on the ground beam 300, and a plurality of layers of rubber rings 122 are sleeved around the central column. The rubber ring 122 is stacked on the mounting table 123 and fixedly mounted on the mounting table 123 by the reinforcing nails 124. The center post 121 is not in contact with the mounting table 123 and the reinforcement pins 124 are not in contact with the ground beam 300. The independent damping module 120 is used to absorb minor conventional shocks. When a longitudinal shock occurs, the ground beam 300 and the mounting table 123 press the rubber ring 122, and the rubber ring 122 absorbs the shock; when a lateral shock occurs, the ground beam 300 and the mounting table 123 act on the rubber ring 122 through the center post 121 and the reinforcement pins 124, and the rubber ring 122 absorbs the shock.
The associated damping module 110 comprises a hydraulic cylinder 111, wherein a hydraulic piston 112 is arranged in the hydraulic cylinder 111, and the hydraulic piston 112 is in sliding contact with the inner side wall of the hydraulic cylinder 111. A piston column 113 is fixed to the upper end of the hydraulic piston 112, and the piston column 113 penetrates the upper end of the hydraulic cylinder 111 and is fixed to the mounting table 123 of the independent damping module 120. A spring 114 is arranged between the hydraulic piston 112 and the inner wall of the hydraulic cylinder 111 for driving the hydraulic piston 112 to return. The upper end of the hydraulic cylinder 111 of each associated shock module 110 communicates with the lower end of the hydraulic cylinder 111 of an adjacent associated shock module 110. The hydraulic cylinder 111 is filled with a liquid. While minor conventional shocks are substantially absorbed by the individual shock absorbing modules 120, the primary function of the associated shock absorbing modules 110 is to absorb major longitudinal shocks, particularly local severe shocks, which are the most damaging shocks to the ground 400. When a local severe shock occurs, the independent damping module 120 at the shock location absorbs a portion of the amplitude, the remaining amplitude being absorbed by the stroke of the hydraulic piston 112. Under the action of vibration, the hydraulic piston 112 is longitudinally displaced in the hydraulic cylinder 111, and most of the energy is absorbed by the liquid. The displacement of the hydraulic piston 112 changes the volumes of the hydraulic cylinders 111 above and below the hydraulic piston 112, so that liquid flows out from one end and flows in from the other end, thereby changing the volumes of the liquid above and below the hydraulic piston 112 in the adjacent hydraulic cylinder 111, further driving the hydraulic piston 112 in the adjacent hydraulic cylinder 111 and the hydraulic piston 112 to displace in the same direction, further driving the adjacent ground 400 to deform in the same direction, namely, when a certain area of the ground 400 is deformed in a larger longitudinal direction, the ground 400 in the surrounding area is deformed in the same direction, so that the ground 400 is deformed in a certain gradient, rather than being deformed in a local severe manner, and further reducing the possibility of cracks of the ground 400 due to deformation.
Since the portion of the piston rod 113 located in the hydraulic cylinder 111 can occupy a partial volume, that is, the upper portion of the hydraulic piston 112 in the hydraulic cylinder 111 is weak in the holding capacity and the lower portion is strong in the holding capacity, the degree of influence of the displacement of any hydraulic piston 112 on the displacement of the hydraulic piston 112 in the adjacent hydraulic cylinder 111 can be changed by changing the diameter of the piston rod 113. Taking the second associated shock module 110 on the left side of fig. 1 as an example, when the hydraulic piston 112 descends, the lower portion of the hydraulic piston 112 in the hydraulic cylinder 111 outputs the fluid to the upper portion of the hydraulic piston 112 in the adjacent hydraulic cylinder 111, and the upper portion of the hydraulic piston 112 in the hydraulic cylinder 111 sucks the fluid from the lower portion of the hydraulic piston 112 in the adjacent hydraulic cylinder 111. Because there is often more than one adjacent cylinder 111, the effect of the cylinder 111 on the adjacent cylinder 111 is divided into multiple parts, whether it is outputting or sucking fluid, and the effect is reduced. To increase the influence of the hydraulic cylinder 111 on the adjacent hydraulic cylinders 111, the diameter of each piston column 113 may be increased, thereby occupying more volume of the upper portion of the hydraulic piston 112 in each hydraulic cylinder 111, and reducing the capacity of the upper portion of the hydraulic piston 112 in each hydraulic cylinder 111, so that the upper portion of the hydraulic piston 112 in each hydraulic cylinder 111 receives a small amount of liquid, and may push the hydraulic piston 112 to move downward by a larger displacement. The liquid output from the lower part of the hydraulic piston 112 in the hydraulic cylinder 111 adjacent to the hydraulic cylinder 111 may flow entirely into the upper part of the hydraulic piston 112 in the hydraulic cylinder 111, or may flow partially into the upper part of the hydraulic piston 112 in the hydraulic cylinder 111 further away, and the other part flows to the upper part of the hydraulic piston 112 in the hydraulic cylinder 111, depending on the degree of smoothness of the liquid transfer, the number of adjacent hydraulic cylinders 111 and the diameter of the piston column 113, and needs specific analysis, but does not affect the implementation of the embodiment; the liquid input to the upper portion of the hydraulic piston 112 in the adjacent hydraulic cylinder 111 is not all used to push the hydraulic piston 112 to move, and some of the liquid flows into the lower portion of the hydraulic cylinder 111 that is farther. As hydraulic pressure is transferred, the effect of the movement of the hydraulic piston 112 of the second left associated shock module 110 gradually decreases, and the effect of the further associated shock module 110 is negligible from the fourth left associated shock module 110. Still taking the second associated damping module 110 on the left side of fig. 1 as an example, when the hydraulic piston 112 is lifted, the movement process of the hydraulic piston 112 in the adjacent hydraulic cylinder 111 and the further hydraulic cylinder 111 is substantially opposite to the above process, and will not be described herein.
The foregoing description of the preferred embodiments of the present invention should not be taken as limiting the invention, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (3)
1. A seismic isolation structure of a building comprising a plurality of seismic isolation units (100), characterized in that each of said seismic isolation units (100) comprises an associated damping module (110) and an independent damping module (120); the associated damping module (110) comprises a hydraulic cylinder (111), and the lower end of the hydraulic cylinder (111) is connected with a bearing structure of a building; a hydraulic piston (112) is arranged in the hydraulic cylinder (111), and the hydraulic piston (112) is in sliding contact with the inner side wall of the hydraulic cylinder (111); a piston column (113) is fixed at the upper end of the hydraulic piston (112), the piston column (113) penetrates through the upper end of the hydraulic cylinder (111), the lower end of the independent damping module (120) is connected with the piston column (113), and the upper end of the independent damping module is connected with a structure subjected to damping and isolation; a spring (114) is arranged between the hydraulic piston (112) and the inner wall of the hydraulic cylinder (111) and is used for driving the hydraulic piston (112) to reset; the upper end of the hydraulic cylinder (111) of each associated shock absorption module (110) is communicated with the lower end of the hydraulic cylinder (111) of the adjacent associated shock absorption module (110); the hydraulic cylinder (111) is filled with liquid;
the application method of the building shock absorption and isolation structure comprises the following steps: the degree of influence of the displacement of any of the hydraulic pistons (112) on the displacement of the hydraulic piston (112) in the adjacent hydraulic cylinder (111) is changed by changing the diameter of the piston cylinder (113).
2. The building seismic reduction and isolation structure according to claim 1, wherein the load bearing structure comprises a main girder surface (200), the seismic reduction and isolation structure comprises a ground girder (300), the main girder surface (200) is the upper surface of a main girder of the building, the ground girder (300) is located above the main girder surface (200), the two are connected through a plurality of seismic reduction and isolation units (100), and the ground (400) is laid above the ground girder (300).
3. The building seismic isolation and reduction structure according to claim 2, wherein the independent damping module (120) comprises a central column (121), the upper end of the central column (121) is connected with the structure subjected to seismic isolation, and a plurality of layers of rubber rings (122) are sleeved around the central column; the rubber ring (122) is stacked on the mounting table (123) and fixedly mounted on the mounting table (123) through the reinforcing nails (124); the center post (121) is not in contact with the mounting table (123), and the reinforcement pins (124) are not in contact with the ground beam (300).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310171409.9A CN115897839B (en) | 2023-02-28 | 2023-02-28 | Shock absorbing and isolating structure of building |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310171409.9A CN115897839B (en) | 2023-02-28 | 2023-02-28 | Shock absorbing and isolating structure of building |
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| CN115897839A CN115897839A (en) | 2023-04-04 |
| CN115897839B true CN115897839B (en) | 2023-05-09 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08333918A (en) * | 1995-06-06 | 1996-12-17 | Nitta Ind Corp | Base isolation device |
| CN2376556Y (en) * | 1999-03-19 | 2000-05-03 | 白泷 | Shock-absorber for vehicle |
| CN105780640A (en) * | 2015-12-04 | 2016-07-20 | 东南大学 | Resettable shape memory alloy (SMA) multidimensional vibration isolating support |
| CN206860752U (en) * | 2017-05-25 | 2018-01-09 | 天津大学 | A kind of variation rigidity hydraulic pressure three-dimensional isolation device |
| CN208668623U (en) * | 2018-07-27 | 2019-03-29 | 佛山科学技术学院 | A kind of three-dimensional isolation structure of bilayer shock insulation |
| CN212177749U (en) * | 2020-03-10 | 2020-12-18 | 何亨良 | Novel improve mechanical equipment shock attenuation of structure device |
| CN114542644A (en) * | 2022-01-25 | 2022-05-27 | 天津大学 | Three-dimensional shock absorption, isolation and anti-swing device with replaceable damping part |
-
2023
- 2023-02-28 CN CN202310171409.9A patent/CN115897839B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08333918A (en) * | 1995-06-06 | 1996-12-17 | Nitta Ind Corp | Base isolation device |
| CN2376556Y (en) * | 1999-03-19 | 2000-05-03 | 白泷 | Shock-absorber for vehicle |
| CN105780640A (en) * | 2015-12-04 | 2016-07-20 | 东南大学 | Resettable shape memory alloy (SMA) multidimensional vibration isolating support |
| CN206860752U (en) * | 2017-05-25 | 2018-01-09 | 天津大学 | A kind of variation rigidity hydraulic pressure three-dimensional isolation device |
| CN208668623U (en) * | 2018-07-27 | 2019-03-29 | 佛山科学技术学院 | A kind of three-dimensional isolation structure of bilayer shock insulation |
| CN212177749U (en) * | 2020-03-10 | 2020-12-18 | 何亨良 | Novel improve mechanical equipment shock attenuation of structure device |
| CN114542644A (en) * | 2022-01-25 | 2022-05-27 | 天津大学 | Three-dimensional shock absorption, isolation and anti-swing device with replaceable damping part |
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| CN115897839A (en) | 2023-04-04 |
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