JPS6470395A - Displacement calculation method of floating roof in floating roof tank - Google Patents
Displacement calculation method of floating roof in floating roof tankInfo
- Publication number
- JPS6470395A JPS6470395A JP62221875A JP22187587A JPS6470395A JP S6470395 A JPS6470395 A JP S6470395A JP 62221875 A JP62221875 A JP 62221875A JP 22187587 A JP22187587 A JP 22187587A JP S6470395 A JPS6470395 A JP S6470395A
- Authority
- JP
- Japan
- Prior art keywords
- floating roof
- periphery
- angular
- calculated
- degree
- 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
Abstract
PURPOSE:To easily measure vertical displacement at the periphery of a floating roof by determining angular displacement of the floating roof on which a plurality of sensors for angular velocity or angular acceleration are equipped to integrate with time the detected signals from them. CONSTITUTION:Detected signals of a sensor 5, mounted on the center of a floating roof 4 and also sensors 52-54 mounted at every 45-degree on the periphery of the floating roof 4 are recorded once in a data recorder to analyse earthquake data taken out after an earthquake occurs. For the analyses, first, angular velocity (angular acceleration) detected by sensors 51-54 is once (or twice) integrated with time to calculate angular displacement. Next, a vertical displacement Y0=gamma/sintheta1 (gamma: radius of the floating roof 4) of the periphery of the floating roof in 0 degree direction is calculated from an angulardisplacement theta1 of the sensor 51 and an angular displacement theta2 of the sensor 52. Correction coefficient C1, C2 is previously calculated to compute Y0 from a formula (1), taking consideration of a deflection of the floating roof 4. The maximum vertical displacement is calculated in the same manner from the vertical displacement Y45, Y90 calculated on the floating roof periphery in the both directions of 45-degree and 90-degree.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62221875A JPS6470395A (en) | 1987-09-07 | 1987-09-07 | Displacement calculation method of floating roof in floating roof tank |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62221875A JPS6470395A (en) | 1987-09-07 | 1987-09-07 | Displacement calculation method of floating roof in floating roof tank |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6470395A true JPS6470395A (en) | 1989-03-15 |
JPH0585434B2 JPH0585434B2 (en) | 1993-12-07 |
Family
ID=16773552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62221875A Granted JPS6470395A (en) | 1987-09-07 | 1987-09-07 | Displacement calculation method of floating roof in floating roof tank |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6470395A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005219772A (en) * | 2004-02-05 | 2005-08-18 | Ishikawajima Harima Heavy Ind Co Ltd | Strength evaluation method for tank floating roof |
WO2009121169A1 (en) * | 2008-03-31 | 2009-10-08 | Syscor Research & Development Inc. | Apparatus for the wireless remote monitoring of storage tank roofs |
US8094187B2 (en) | 2002-05-22 | 2012-01-10 | Assembleon N.V. | Method of placing a component by means of a placement device at a desired position on a substrate holder, and device suitable for performing such a method |
-
1987
- 1987-09-07 JP JP62221875A patent/JPS6470395A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8094187B2 (en) | 2002-05-22 | 2012-01-10 | Assembleon N.V. | Method of placing a component by means of a placement device at a desired position on a substrate holder, and device suitable for performing such a method |
JP2005219772A (en) * | 2004-02-05 | 2005-08-18 | Ishikawajima Harima Heavy Ind Co Ltd | Strength evaluation method for tank floating roof |
WO2009121169A1 (en) * | 2008-03-31 | 2009-10-08 | Syscor Research & Development Inc. | Apparatus for the wireless remote monitoring of storage tank roofs |
Also Published As
Publication number | Publication date |
---|---|
JPH0585434B2 (en) | 1993-12-07 |
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