JPS6433358A - Earthquakeproof floor structure - Google Patents
Earthquakeproof floor structureInfo
- Publication number
- JPS6433358A JPS6433358A JP18958387A JP18958387A JPS6433358A JP S6433358 A JPS6433358 A JP S6433358A JP 18958387 A JP18958387 A JP 18958387A JP 18958387 A JP18958387 A JP 18958387A JP S6433358 A JPS6433358 A JP S6433358A
- Authority
- JP
- Japan
- Prior art keywords
- section
- shaft
- bearing
- bolt
- floor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Floor Finish (AREA)
Abstract
PURPOSE: To conduct a vertical motion only in case of an earthquake, and to carry out vertical vibration isolation by forming a conical recessed section to the upper section of a floor and disposing a bearing by a steel ball having a large diameter in a rollable manner while connecting the bearing to a movable section in an extensible manner by a coil spring in a bearing section. CONSTITUTION: A supporting bar 5 comprising a shaft 6 and a jack bolt 7 screwed at the front end of the shaft 6 connects the root end of the shaft 6 to a link ball 8, and is journaled to a boss 11 by a large-sized nut installed on the concrete floor 1 side by a bolt 10 by a bolt 9. A sleeve 15 is fitted on an outer circumference on the journaling section of the shaft 6, a diameter- expanding end section 15a is abutted onto the surface of the boss 11, and a coil spring 17 is wound on an outer circumference between another end of the sleeve 15 and a snap ring 16 fixed onto the intermediate section of the shaft 6 in a collar shape. The supporting bar 5 is interposed between the concrete floor 1 and a floor joist 3 borne by a vibration-isolation mechanism, and used as a bringing-down and erecting means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18958387A JPH0745769B2 (en) | 1987-07-28 | 1987-07-28 | Seismic isolation floor structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18958387A JPH0745769B2 (en) | 1987-07-28 | 1987-07-28 | Seismic isolation floor structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6433358A true JPS6433358A (en) | 1989-02-03 |
JPH0745769B2 JPH0745769B2 (en) | 1995-05-17 |
Family
ID=16243757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18958387A Expired - Lifetime JPH0745769B2 (en) | 1987-07-28 | 1987-07-28 | Seismic isolation floor structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0745769B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012077863A (en) * | 2010-10-04 | 2012-04-19 | Shigeru Watanabe | Base isolation device |
-
1987
- 1987-07-28 JP JP18958387A patent/JPH0745769B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012077863A (en) * | 2010-10-04 | 2012-04-19 | Shigeru Watanabe | Base isolation device |
Also Published As
Publication number | Publication date |
---|---|
JPH0745769B2 (en) | 1995-05-17 |
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