000018879 001__ 18879
000018879 005__ 20170118182245.0
000018879 04107 $$aeng
000018879 046__ $$k2017-01-09
000018879 100__ $$aTsai, Chi-Chin
000018879 24500 $$aAmplification Behavior of Vertical Motion Observed From Downhole Arrays

000018879 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018879 260__ $$b
000018879 506__ $$arestricted
000018879 520__ $$2eng$$aRecently, very strong vertical ground motions have been recorded during several earthquakes and have been considered to be critical to structure designs. Similar to horizontal motions, vertical motions can be amplified with the local site condition. However, the amplification behavior of vertical motion is different from that of horizontal motion because of different propagation mechanisms. In this study, three component records of five downhole arrays, including different geological conditions, ground water tables, and intensity of motions, were analyzed to evaluate the differences of wave propagation in the vertical and horizontal directions. The amplification behaviors of two directions are characterized by the transfer function of the surface and downhole measurement. The findings are as follows: (1) the amplification of vertical motion is less significant than that of horizontal motion, (2) the amplification behavior of vertical motion is less dependent on the intensity of motion (i.e., soil nonlinearity) than that of horizontal motion, and (3) the amplification behavior of vertical motion is more sensitive to the location of ground water table than that of horizontal motion. These variances should be considered in the dynamic site response analysis.

000018879 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018879 653__ $$adownhole array, vertical ground motion, soil nonlinearity, transfer function

000018879 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018879 720__ $$aTsai, Chi-Chin$$iLiu, Hsing-Wen
000018879 8560_ $$ffischerc@itam.cas.cz
000018879 8564_ $$s395591$$uhttps://invenio.itam.cas.cz/record/18879/files/24.pdf$$yOriginal version of the author's contribution as presented on USB, paper 24.
000018879 962__ $$r16048
000018879 980__ $$aPAPER