000019031 001__ 19031
000019031 005__ 20170118182256.0
000019031 04107 $$aeng
000019031 046__ $$k2017-01-09
000019031 100__ $$aMurono, Yoshitaka
000019031 24500 $$aPractical Evaluation Method of Input Loss of Rigid-Frame Viaducts With Piles

000019031 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019031 260__ $$b
000019031 506__ $$arestricted
000019031 520__ $$2eng$$aPast studies have shown that the input loss effect associated with the dynamic interaction of groundfoundation systems can be reproduced in large-scale group-pile foundations. However, only few studies have investigated the input loss effect on structures such as the single-column, one-pile rigid-frame viaducts commonly observed in Japan which are not expected to provide the group-pile effect due to a longer distance between the piles than the normal one.Therefore, we examined the input loss effect of rigid-frame viaducts. In addition, we proposed a simplified static analysis method for evaluating the response of structures while taking into consideration the input loss effect, and examined the applicability of the method proposed. The scope of the research and the results are summarized below. (1) A dynamic linear analysis by means of two-dimensional lumped-mass models was conducted to examine the input loss effect of one-column, one-pile rigid-frame viaducts. It was found out that rigid-frame viaducts that have wide inter-pile spacing and therefore are not expected to provide the group-pile effect can still produce input loss, and the input loss effect becomes greater as the difference in rigidity between the ground and the piles becomes larger. (2) Reduction of structural response associated with input loss is significant at low frequencies. (3) In order to take the input loss effect into consideration in the structural response evaluation, methods were proposed for calculating effective input coefficients by means of a seismic deformation method and for calculating response spectra based on the random vibration theory. The applicability of these methods proposed was verified through comparison with dynamic analysis.

000019031 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019031 653__ $$aInput loss, Effective input motion, Kinematic interaction

000019031 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019031 720__ $$aMurono, Yoshitaka$$iHochi, Yudai
000019031 8560_ $$ffischerc@itam.cas.cz
000019031 8564_ $$s650098$$uhttps://invenio.itam.cas.cz/record/19031/files/2712.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2712.
000019031 962__ $$r16048
000019031 980__ $$aPAPER