JPS6433358A - Earthquakeproof floor structure - Google Patents

Earthquakeproof floor structure

Info

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
Application number
JP18958387A
Other languages
Japanese (ja)
Other versions
JPH0745769B2 (en
Inventor
Yoshikatsu Miura
Kaoru Ueno
Minoru Karibe
Hiroshi Midorikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kajima Corp
Original Assignee
Kajima Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kajima Corp filed Critical Kajima Corp
Priority to JP18958387A priority Critical patent/JPH0745769B2/en
Publication of JPS6433358A publication Critical patent/JPS6433358A/en
Publication of JPH0745769B2 publication Critical patent/JPH0745769B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
JP18958387A 1987-07-28 1987-07-28 Seismic isolation floor structure Expired - Lifetime JPH0745769B2 (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012077863A (en) * 2010-10-04 2012-04-19 Shigeru Watanabe Base isolation device

Cited By (1)

* Cited by examiner, † Cited by third party
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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