000011641 001__ 11641
000011641 005__ 20141205155931.0
000011641 04107 $$aeng
000011641 046__ $$k2008-10-12
000011641 100__ $$aShimamoto, Ryu
000011641 24500 $$aSeismic-Upgrading of Existing Stacks of Nuclear Power Station Using Structural Control Oil Dampers

000011641 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011641 260__ $$b
000011641 506__ $$arestricted
000011641 520__ $$2eng$$aThis paper discusses a seismic-upgrading project for 100m-high steel stacks in a nuclear power station. For this upgrading, we reexamined seismic loads, and set up a new target earthquake that exceeds the original design loads when the stack was designed. First, we examined the possibility of conventional reinforcement by building a new supporting tower to surround the existing stack. It was, however, clarified that several problems would remain unsolved with such simple reinforcement. In order to provide high damping as well as higher strength, we planned to link the stack and the supporting tower via oil dampers. Numerical analysis results showed remarkable response reduction effects, but also clarified that the required damper’s stroke would need to be over 200mm and its velocity almost 2.0m/sec, which beyond the performance of existing products. Thus, we developed a high-performance oil damper that meets these stringent specifications. This paper presents the upgrading plan, simulation results and the newly developed oil damper.

000011641 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011641 653__ $$aStructural control, Oil damper, Nuclear power plant, Stack, Damping augmentation

000011641 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011641 720__ $$aShimamoto, Ryu$$iMori, Fukashi$$iKitaori, Tomonori$$iAizawa, Satoru$$iOhara, Eiji$$iKurino, Haruhiko
000011641 8560_ $$ffischerc@itam.cas.cz
000011641 8564_ $$s441154$$uhttps://invenio.itam.cas.cz/record/11641/files/05-06-0094.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-06-0094.
000011641 962__ $$r9324
000011641 980__ $$aPAPER