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CN-116876669-B - Thick meat rubber-lead core rubber combined support with vertical limiting function

CN116876669BCN 116876669 BCN116876669 BCN 116876669BCN-116876669-B

Abstract

The invention relates to a thick meat rubber-lead core rubber combined support with a vertical limiting function, which comprises a thick meat rubber support, a lead core rubber support, a sleeve and a vertical guide rod, wherein the sleeve is embedded in a hole formed in the middle of the thick meat rubber support, the vertical guide rod is inserted into the sleeve, the sleeve comprises a wide part and a narrow part, and the vertical guide rod comprises a wide part and a narrow part. Under normal load, the integral vertical rigidity of the combined support is the series rigidity of the pure thick-meat rubber support and the lead rubber support, under the action of horizontal earthquake, the horizontal force between the upper flange plate and the lower flange plate of the thick-meat rubber support is mainly transmitted by contact between the vertical guide rod and the steel pipe sleeve, and when the vertical compression deformation and the tension deformation of the thick-meat rubber support are larger due to larger earthquake action, the vertical guide rod and the sleeve provide contact rigidity. Compared with the prior art, the invention has the advantages of simple vibration isolation/shock absorption and support connecting structure, convenient production and installation, device tension damage prevention, rigid swing prevention and the like.

Inventors

  • CHEN CHANGJIA
  • WU HONGLEI
  • WANG ZI

Assignees

  • 同济大学建筑设计研究院(集团)有限公司

Dates

Publication Date
20260505
Application Date
20230713

Claims (6)

  1. 1. The thick-meat rubber-lead core rubber combined support with the vertical limiting function is characterized by comprising a thick-meat rubber support, a lead core rubber support and a limiting device; The thick-meat rubber support comprises a middle thick-meat rubber layer, a first upper sealing plate and a first lower sealing plate, and the first upper sealing plate is fixedly connected with the upper structure; the lead core rubber support comprises a middle laminated steel plate rubber layer, a second upper sealing plate and a second lower sealing plate, and the second lower sealing plate is fixedly connected with the lower structure; The limiting device comprises a sleeve and a vertical guide rod, the sleeve is embedded in a hole formed in the middle of the thick-meat rubber support, and the vertical guide rod is inserted in the sleeve; the sleeve comprises a wide part and a narrow part, and the vertical guide rod comprises a wide part and a narrow part which are matched with the sleeve; the narrow part of the vertical guide rod is fixedly connected with the first upper sealing plate of the thick-meat rubber support, and the wide part of the sleeve is fixedly connected with the first lower sealing plate of the thick-meat rubber support; the width of the wide part of the vertical guide rod is smaller than the width of the sleeve wide part hole and larger than the width of the sleeve narrow part hole, and the width of the narrow part of the vertical guide rod is smaller than the width of the sleeve narrow part hole; The clearance between the lower end of the vertical guide rod and the bottom of the sleeve meets the vertical compression deformation of the support under normal use load, and the clear distance between the wide part of the lower part of the vertical guide rod and the narrow part hole of the upper part of the sleeve meets the vertical tensile deformation of the support under normal use load; the thick-meat rubber support and the lead core rubber support are fixedly connected at the edge positions of the first lower sealing plate and the second upper sealing plate through connecting bolts; When the thick-meat rubber support is deformed by vertical compression, the end face of the wide part of the vertical guide rod, which is far away from the narrow part, is contacted with the end face of the wide part of the sleeve, and when the thick-meat rubber support is deformed by vertical tension, the section of the wide part of the vertical guide rod, which is close to the narrow part, is contacted with one end of the narrow part of the sleeve.
  2. 2. The thick-meat rubber-lead core rubber combined support with the vertical limiting function according to claim 1, wherein the upper sealing plate and the lower sealing plate are flange plates.
  3. 3. The thick-meat rubber-lead core rubber combined support with the vertical limiting function according to claim 1, wherein the sleeve is a steel tube sleeve.
  4. 4. The thick-meat rubber-lead rubber combined support with the vertical limiting function according to claim 1, wherein the hole formed in the middle of the thick-meat rubber support is a cylindrical hole.
  5. 5. The thick-meat rubber-lead rubber combined support with the vertical limiting function according to claim 1, wherein the inner hole of the sleeve is in a form of being narrow at the upper part and wide at the lower part, and the vertical guide rod is in a form of being wide at the lower part and narrow at the upper part.
  6. 6. The thick-meat rubber-lead core rubber combined support with the vertical limiting function according to claim 1, wherein the narrow part of the vertical guide rod is welded and fixed with the first upper sealing plate, and the wide part of the sleeve is welded and fixed with the first lower sealing plate.

Description

Thick meat rubber-lead core rubber combined support with vertical limiting function Technical Field The invention relates to a shock insulation/vibration support structure, in particular to a thick-meat rubber-lead rubber combined support with a vertical limiting function. Background The subway is used as an emerging public transport means of a city, so that the daily travel efficiency of citizens is greatly promoted, and great contribution is made to urban economic development. Because the surrounding environment vibration and secondary noise pollution are easy to cause in the subway operation process, people living in the subway upper cover building often face health problems to a certain extent, and the environment vibration isolation of the subway upper cover building is urgent. Meanwhile, with the modern development of cities, the greater the function recovery speed of post-earthquake buildings and infrastructure has an influence on economy and society, the higher the earthquake risk, and the requirements on earthquake-resistant design of the structure are gradually improved. Under the background, the research and development of the vibration-vibration double-control technology capable of isolating subway vibration and noise and isolating earthquake action gradually becomes a hot research content. The patent document with the application number of CN202022731439.5 discloses a combined vibration isolation device with self-resetting function and torsion resistance, provides bigger tensile capacity and torsion resistance for the device through damper, plays the consumption effect through the pressure that rubber column and steel sheet bear when shaking, can reach apparent vibration isolation effect, and when the steel sheet receives the extrusion simultaneously, can turn into horizontal pressure with a part of vertical pressure, horizontal pressure along steel sheet surface evenly distributed to realize offset horizontal pressure, thereby improve the compressive strength of rubber column, strengthened vibration isolation intensity, but can't solve the rigidity and swing the problem. Patent document with application number of CN201710220772.X discloses a three-dimensional vibration isolation and reduction device and a vibration isolation and reduction method thereof. The vertical vibration isolation device is characterized in that a rubber support at the lower part is used for isolating horizontal earthquake, a vertical vibration isolation device at the upper part is used for isolating vertical vibration of vertical rail transit, the rubber support is small in horizontal rigidity, the transmission of the earthquake to an upper building structure is reduced under the earthquake action, so that the horizontal earthquake is isolated, the vertical vibration isolation device adopts a belleville spring group, the vertical rigidity is small, the transmission of the vertical vibration to the upper building structure is prevented under the action of ground vertical vibration waves caused by subway operation, and meanwhile, the vertical vibration suffered by the structure is reduced through the deformation and recovery process of the belleville spring group, and the friction resistance consumes a part of vibration energy, but the problems of tension damage and rigid swing of the device cannot be solved. At present, the research and development of vibration double-control supports are mainly simple combination of a vertical vibration isolation support and a horizontal vibration isolation support. Meanwhile, the existing vibration-vibration double-control support has good vertical vibration isolation and horizontal vibration isolation performance, but as the vertical rigidity of a vibration isolation/vibration layer is reduced, or the height of the structure is increased and the aspect ratio of the structure is increased, the whole vibration isolation/vibration upper structure is subjected to rigid swinging phenomenon under the action of horizontal earthquake, and the overturning risk of the upper structure is increased. In addition, for the high aspect ratio earthquake-proof building, the support is easy to be pulled under the action of earthquake, so that the earthquake-proof support is pulled to be damaged, and the safety of the whole structure is affected. Disclosure of Invention The invention aims to overcome the defects of the prior art and provide the thick-meat rubber-lead rubber combined support with the vertical limiting function, so that the support is prevented from being broken in tension and swaying rigidly. The aim of the invention can be achieved by the following technical scheme: a thick-meat rubber-lead rubber combined support with a vertical limiting function comprises a thick-meat rubber support, a lead rubber support and a limiting device; The thick-meat rubber support comprises a middle thick-meat rubber layer, an upper sealing plate and a lower sealing plate, and is fixedly connected with the up