CN103046662A - Soft contact limit mechanism for isolation layers - Google Patents
Soft contact limit mechanism for isolation layers Download PDFInfo
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- CN103046662A CN103046662A CN2013100068404A CN201310006840A CN103046662A CN 103046662 A CN103046662 A CN 103046662A CN 2013100068404 A CN2013100068404 A CN 2013100068404A CN 201310006840 A CN201310006840 A CN 201310006840A CN 103046662 A CN103046662 A CN 103046662A
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Abstract
The invention relates to a soft contact limit mechanism for isolation layers and belongs to the technical field of engineering structure seismic reduction and isolation. The soft contact limit mechanism for isolation layers comprises limiters, buffers and a reaction support. Both the limiters and the buffers are elastic devices. The limiters are more rigid than the buffers. One end of each limiter is fixed on the reaction support, the other end of each limiter is fixedly connected to one end of the corresponding buffer, and a preserved distance is reserved between the other end of the buffer and the upper floor of an isolation layer. The reaction support is connected with the bottom of the isolation layer. When an earthquake causes large lateral displacement of the isolation layer, the upper floor of the isolation layer collides with the buffers to deform the buffers and the limiters. The buffers are small in rigidity, high impact upon the isolator is avoided during contact, and damage of building structures by impacting is avoided. In addition, the limiters are large in deformation and deforming stiffness, and certain lateral displacement of the isolation layer is allowed and can also be controlled within a safety range.
Description
Technical field
The present invention relates to the soft contact position-limit mechanism of a kind of Seismic Isolation of Isolation Layer, belong to engineering structures damping and seismic isolation technology field, be mainly used in the protection of the building foundation earthquake isolating equipments such as house and bridge.
Background technology
The most frequently used form of base isolation structure has two kinds, and a kind of is the neoprene bearing isolation structure, and a kind of is Sliding-isolated Structures, because its excellent performance in earthquake is used more and more extensive.When the shock-insulation building after the shake is investigated, once found to have Seismic Isolation of Isolation Layer and the basic phenomenon that bumps against, because the erratic behavior of seismic wave, there is the possibility with the resonance of structure generation class in the low frequency part of seismic wave, make the displacement of Seismic Isolation of Isolation Layer surpass former design load, cause the damage of Seismic Isolation of Isolation Layer and relevant pipeline.
For preventing that the Seismic Isolation of Isolation Layer displacement from surpassing design load, often adopt stopping means that the displacement of Seismic Isolation of Isolation Layer is limited, stopping means commonly used has three kinds, and the first is that postive stop baffle directly is set, the second is to adopt spring, U-shaped steel plate etc. as stop, and the third is to adopt rubber as stop.Front two kinds of spacing measures, during owing to collision, contact stiffness is large, brings impact to Seismic Isolation of Isolation Layer, when impact is larger, can cause structural failure; The third measure because rubber layer rigidity is less, when rubber layer is thicker, is out of shape greatlyr, can't play spacing effect, when rubber layer is thinner, after rubber layer is compressed, still can bring impact to superstructure.
Summary of the invention
For solving the negative effect of existing stopping means, it is relatively little that the present invention proposes a kind of contact stiffness, the soft contact position-limit mechanism of the Seismic Isolation of Isolation Layer that deformation rigidity is relatively large, and it neither can produce impact to Seismic Isolation of Isolation Layer when contact, can play good limit effect again.
Technical scheme of the present invention is as follows:
The soft contact position-limit mechanism of a kind of Seismic Isolation of Isolation Layer comprises stop, snubber and reaction support, and described stop and snubber are elastic device, and the rigidity of stop is greater than the rigidity of snubber; Wherein, an end of stop is fixed on the reaction support, and the other end of stop is fixedly connected with an end of snubber, between the other end of snubber and the Seismic Isolation of Isolation Layer top superstructure preset space is arranged; Described reaction support is connected with the Seismic Isolation of Isolation Layer bottom.
Described stop is spring or U-shaped steel plate.Its rigidity is larger, and concrete rigidity is by calculative determination.
Described snubber is spring or block rubber.Its rigidity is less, and concrete rigidity is by calculative determination.
When earthquake causes Seismic Isolation of Isolation Layer generation larger side to move, Seismic Isolation of Isolation Layer top superstructure and snubber bump against, cause snubber and stop to deform, because the rigidity of snubber own is less, when it contacts with Seismic Isolation of Isolation Layer top superstructure, contact stiffness is also less, can not give the larger reaction force of Seismic Isolation of Isolation Layer, has avoided impacting and has brought damage to building structure; Simultaneously, because larger deflection and the deformation rigidity of stop both allowed Seismic Isolation of Isolation Layer that certain amount of side-shift is arranged, it can be controlled in the safe range again, give play to shock insulation effectiveness.
The soft contact position-limit mechanism of above-mentioned Seismic Isolation of Isolation Layer both can be applied to the neoprene bearing base isolation structure, also can be applied to the sliding base isolated structure.
Beneficial effect:
Adopt the soft contact position-limit mechanism of Seismic Isolation of Isolation Layer of the present invention neither can when contact, produce impact to Seismic Isolation of Isolation Layer, can play good limit effect again, and cost is low, easy construction.
Description of drawings
Fig. 1 is the soft contact position-limit mechanism of Seismic Isolation of Isolation Layer of the present invention schematic diagram;
Fig. 2 is the elevational schematic view that the present invention uses in the neoprene bearing shock isolation system;
Fig. 3 is the structural scheme of mechanism of employing spring retainer block rubber snubber of the present invention;
Fig. 4 is the structural scheme of mechanism of the U-shaped steel plate stop of employing of the present invention block rubber snubber;
Among the figure: the 1-stop; The 2-snubber; The 3-reaction support; 4-Seismic Isolation of Isolation Layer top superstructure; The 5-neoprene bearing; 6-shock isolation system superstructure.
The specific embodiment
Shown in Fig. 1-4, the soft contact position-limit mechanism of the Seismic Isolation of Isolation Layer of the present invention specific embodiment is as follows:
Embodiment 1:
Shown in Fig. 1-2, the soft contact position-limit mechanism of a kind of Seismic Isolation of Isolation Layer of the present invention comprises stop 1, snubber 2 and reaction support 3, and stop 1 and snubber 2 are elastic device, and the rigidity of stop 1 is greater than the rigidity of snubber 2; Wherein, an end of stop 1 is fixed on the reaction support 3, and the other end of stop 1 is fixedly connected with an end of snubber 2, between the other end of snubber 2 and the Seismic Isolation of Isolation Layer top superstructure 4 preset space is arranged; Described reaction support 3 is connected with the Seismic Isolation of Isolation Layer bottom.Wherein, stop 1 adopts spring, and its rigidity is larger; Snubber 2 also adopts spring, and its rigidity is less.Seismic Isolation of Isolation Layer adopts neoprene bearing 5 shock insulations, is provided with Seismic Isolation of Isolation Layer top superstructure 4 on the neoprene bearing 5, and superstructure 4 tops, Seismic Isolation of Isolation Layer top are shock isolation system superstructure 6.
When Seismic Isolation of Isolation Layer sidesway during greater than preset space, Seismic Isolation of Isolation Layer top superstructure 4 bumps against with snubber 2, because the contact stiffness of snubber 2 is less, can not bring larger impact to building structure during contact.Snubber 2 drives stop 1 distortion in distortion, the two provides reaction force to Seismic Isolation of Isolation Layer jointly, the sidesway of restriction Seismic Isolation of Isolation Layer, protection Seismic Isolation of Isolation Layer and ancillary facility thereof.
Embodiment 2:
As shown in Figure 3, the soft contact position-limit mechanism of Seismic Isolation of Isolation Layer of the present invention, its stop 1 adopts spring, and snubber 2 adopts block rubber, and other structure and principle no longer describe in detail with embodiment 1 herein.
Embodiment 3:
As shown in Figure 4, the soft contact position-limit mechanism of Seismic Isolation of Isolation Layer of the present invention, its stop 1 adopts U-shaped steel plate, and snubber 2 adopts block rubber, and other structure and principle no longer describe in detail with embodiment 1 herein.
Wherein, the neoprene bearing 5 in above-described embodiment neoprene bearing base isolation structure also can replace with basic slip support abutment, and carries out spacing for the sliding base isolated structure.
Below only be three specific embodiments of the present invention, enforcement of the present invention is not limited to this.
Claims (3)
1. soft contact position-limit mechanism of Seismic Isolation of Isolation Layer, comprise stop (1), snubber (2) and reaction support (3), it is characterized in that: described stop (1) and snubber (2) are elastic device, and the rigidity of stop (1) is greater than the rigidity of snubber (2); Wherein, an end of stop (1) is fixed on the reaction support (3), and the other end of stop (1) is fixedly connected with an end of snubber (2), between the other end of snubber (2) and the Seismic Isolation of Isolation Layer top superstructure (4) preset space is arranged; Described reaction support (3) is connected with the Seismic Isolation of Isolation Layer bottom.
2. the soft contact position-limit mechanism of a kind of Seismic Isolation of Isolation Layer as claimed in claim 1, it is characterized in that: described stop (1) is spring or U-shaped steel plate.
3. the soft contact position-limit mechanism of a kind of Seismic Isolation of Isolation Layer as claimed in claim 1, it is characterized in that: described snubber (2) is spring or block rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100068404A CN103046662A (en) | 2013-01-09 | 2013-01-09 | Soft contact limit mechanism for isolation layers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100068404A CN103046662A (en) | 2013-01-09 | 2013-01-09 | Soft contact limit mechanism for isolation layers |
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| CN2013100068404A Pending CN103046662A (en) | 2013-01-09 | 2013-01-09 | Soft contact limit mechanism for isolation layers |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443652A (en) * | 2015-11-12 | 2016-03-30 | 中国电力科学研究院 | Vibration reducing and isolating system with limiting devices and installing and arranging method thereof |
| CN106320556A (en) * | 2016-10-20 | 2017-01-11 | 兰州理工大学 | Method for buffering collision of sliding seismic isolation and liquid storage structure and limit walls equipped with rubber blocks |
| CN108412066A (en) * | 2018-01-18 | 2018-08-17 | 滨州学院 | A kind of big shake lower caging device of base isolation bearing |
| CN109505445A (en) * | 2018-12-04 | 2019-03-22 | 北京建筑大学 | A kind of spring stopper and its application method for architectural vibration-insulation layer |
| CN111042012A (en) * | 2019-12-27 | 2020-04-21 | 东南大学 | Waiting platform suitable for bridge construction separated railway station house adopting shock insulation technology |
| CN115247460A (en) * | 2021-12-23 | 2022-10-28 | 兰州理工大学 | Compound stop device of basis shock insulation |
| CN117868333A (en) * | 2024-01-15 | 2024-04-12 | 中国建筑东北设计研究院有限公司 | Limiting device for vibration isolation building and parameter determination method thereof |
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| CN202530572U (en) * | 2012-03-28 | 2012-11-14 | 株洲时代新材料科技股份有限公司 | High-damping and shock-insulation rubber base provided with limit devices |
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| JP3343336B2 (en) * | 1999-05-19 | 2002-11-11 | 戸田建設株式会社 | Sway control device and base-isolated structure in base-isolated structure |
| CN1478966A (en) * | 2003-03-05 | 2004-03-03 | 兰州理工大学 | High-rise building vibration isolation system |
| JP2007211445A (en) * | 2006-02-08 | 2007-08-23 | Shimizu Corp | Floating body type base-isolated structure |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443652A (en) * | 2015-11-12 | 2016-03-30 | 中国电力科学研究院 | Vibration reducing and isolating system with limiting devices and installing and arranging method thereof |
| CN106320556A (en) * | 2016-10-20 | 2017-01-11 | 兰州理工大学 | Method for buffering collision of sliding seismic isolation and liquid storage structure and limit walls equipped with rubber blocks |
| CN106320556B (en) * | 2016-10-20 | 2018-06-15 | 兰州理工大学 | The sliding and shock isolation liquid storage structure of rubber block and spacing walls crusherbull zone method are set |
| CN108412066A (en) * | 2018-01-18 | 2018-08-17 | 滨州学院 | A kind of big shake lower caging device of base isolation bearing |
| CN109505445A (en) * | 2018-12-04 | 2019-03-22 | 北京建筑大学 | A kind of spring stopper and its application method for architectural vibration-insulation layer |
| CN111042012A (en) * | 2019-12-27 | 2020-04-21 | 东南大学 | Waiting platform suitable for bridge construction separated railway station house adopting shock insulation technology |
| CN115247460A (en) * | 2021-12-23 | 2022-10-28 | 兰州理工大学 | Compound stop device of basis shock insulation |
| CN115247460B (en) * | 2021-12-23 | 2024-02-27 | 兰州理工大学 | Foundation shock insulation composite limiting device |
| CN117868333A (en) * | 2024-01-15 | 2024-04-12 | 中国建筑东北设计研究院有限公司 | Limiting device for vibration isolation building and parameter determination method thereof |
| CN117868333B (en) * | 2024-01-15 | 2024-10-18 | 中国建筑东北设计研究院有限公司 | Limiting device for vibration isolation building and parameter determination method thereof |
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Application publication date: 20130417 |