NDLI: Development on Rubber Bearings for Sodium-Cooled Fast Reactor: Part 3 — Ultimate Properties of a Half Scale Thick Rubber Bearings Based on Breaking Test

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Comparison of Seismic Design Provisions Using ASCE 43 With Conventional Design Based on ASCE 7 Seismic Loads

Development of High Acceleration Shaking Table System Using Resonance Vibration

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Development on Rubber Bearings for Sodium-Cooled Fast Reactor: Part 4 — Aging Properties of a Half Scale Thick Rubber Bearings Based on Breaking Test

Ultimate Failure Criteria Evaluation of Elbow Pipe Components in Seismically Isolated NPPs

Development on Rubber Bearings for Sodium-Cooled Fast Reactor: Part 3 — Ultimate Properties of a Half Scale Thick Rubber Bearings Based on Breaking Test

Development of Mechanism for Preventing Derailing of Material Handling Equipment

Development of Seismic Isolation Systems for Sodium-Cooled Fast Reactors in Japan

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Impact of Near-Fault Ground Motions on the Efficiency of Viscous-Damping Systems

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Development on Rubber Bearings for Sodium-Cooled Fast Reactor: Part 3 — Ultimate Properties of a Half Scale Thick Rubber Bearings Based on Breaking Test

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Fukasawa, Tsuyoshi Okamura, Shigeki Yamamoto, Tomohiko Kawasaki, Nobuchika Hirotani, Tsutomu Moriizumi, Eriko Sakurai, Yu Masaki, Nobuo
Copyright Year	2016
Abstract	This paper describes the results of static loading tests using a half-scale thick rubber bearing to investigate ultimate properties application for a Sodium-cooled-Fast-Reactor (SFR). The thick rubber bearing, which has a rubber layer roughly three times thicker in comparison with conventional rubber bearings, has been developed by the authors to ensure seismic safety margins for components installed in the reactor building, and to reduce seismic response in the vertical direction as well as horizontal direction. The thick rubber bearings, 1600 mm in diameter at full scale, have been designed to provide a rated load of about 10000 kN with a horizontal natural period of 3.4 s and a vertical natural period of about 0.133 s. The fundamental restoring-force characteristics of the thick rubber bearings has been already cleared through the static loading tests using a half-scale thick rubber bearing, 800 mm in diameter. However, variations of the restoring force characteristics and ultimate properties have not been obtained yet. These validations are essential from the point of view of Probabilistic Risk Assessment (PRA) for a base isolated nuclear plant as well as to verify the structural integrity of the thick rubber bearing. The purpose of this paper is to indicate the variation of the stiffness and damping ratio concerning restoring force characteristics and the breaking strain or stress as ultimate properties through static loading tests using the half-scale thick rubber bearings.
Sponsorship	Pressure Vessels and Piping Division
File Format	PDF
ISBN	9780791850466
DOI	10.1115/PVP2016-63397
Volume Number	Volume 8: Seismic Engineering
Conference Proceedings	ASME 2016 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2016-07-17
Publisher Place	Vancouver, British Columbia, Canada
Access Restriction	Subscribed
Subject Keyword	Damping Knudsen number Bearings Probabilistic risk assessment Stiffness Safety Rubber Nuclear power stations Stress Sodium fast reactors
Content Type	Text
Resource Type	Article

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