000020196 001__ 20196
000020196 005__ 20170118182359.0
000020196 04107 $$aeng
000020196 046__ $$k2017-01-09
000020196 100__ $$aKatou, Yoshihiro
000020196 24500 $$aStudy on Seismic Response in Substation Steel Structures

000020196 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020196 260__ $$b
000020196 506__ $$arestricted
000020196 520__ $$2eng$$aAfter the 2011 off the Pacific coast of Tohoku Earthquake in Japan (M9.0), it was found that the damage ratio of substation equipment was less than 1% at the substations experiencing strong ground motion with a peak ground acceleration of over 300gal. Consequently, the seismic performance of the existing substation equipment has been demonstrated. However, the steel frame structures of a substation are designed with consideration of the wind load mainly. Furthermore, there have been only few researches related to the seismic response of the steel frame. These backgrounds make difficult to establish the precise technique in seismic performance evaluation. Therefore, this paper presents the fundamental seismic response and the numerical simulation on a steel frame. The target steel frame is a two-dimensional frame structure connected to other equipment with conductors in the out-of-plane direction. To verify an analytical idealization for the seismic performance evaluation of the steel frame, a seismic observation during its operation and a dynamic numerical analysis using the finite element method were performed. In the numerical model, three models with different conditions in idealization of the conductors were generated. In one model, the conductors are not modeled. In the other two models, the conductors are modeled by point mass elements or by beam elements. We examined the effects of the conductors on the dynamic characteristics, such as natural frequency and mode shape, and the seismic response, such as the displacement of the steel frame and stresses of the structural members. Based on these results, it was found that the dynamic characteristics of the steel frame in the direction normal to the conductors were less affected by the conductors. On the other hand, the dynamic characteristics in the direction parallel to the conductors were complicated owing to the effect of the conductors. Because the stresses in the structural members during the earthquake were also affected by the conductors, a detailed model of the conductors was needed in the numerical analysis in order to obtain the reasonable evaluation.

000020196 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020196 653__ $$aSubstation, Steel structures, Conductors, Structural analysis, Seismic Response

000020196 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020196 720__ $$aKatou, Yoshihiro$$iNakakoji, Hajime$$iKobayashi, Takayuki$$iNagata, Seiji$$iTakabatake, Daisuke$$iIwasaki, Shinya
000020196 8560_ $$ffischerc@itam.cas.cz
000020196 8564_ $$s796378$$uhttps://invenio.itam.cas.cz/record/20196/files/726.pdf$$yOriginal version of the author's contribution as presented on USB, paper 726.
000020196 962__ $$r16048
000020196 980__ $$aPAPER