000018424 001__ 18424
000018424 005__ 20170118182221.0
000018424 04107 $$aeng
000018424 046__ $$k2017-01-09
000018424 100__ $$aZhang, Haizhong
000018424 24500 $$aA Response Spectrum Method for Surface Strata Site Amplification

000018424 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018424 260__ $$b
000018424 506__ $$arestricted
000018424 520__ $$2eng$$aMany seismic codes have suggested that the response spectrum should be specified at bedrock level, and then, the calculated free field response spectrum from bedrock will incorporate local site effects. This paper proposes a simple and accurate procedure to obtain the free field response spectrum of a layered soil profile from a specified bedrock response spectrum, taking into account the nonlinear behavior of soil. In this procedure, the soil profile is modeled as a multi-degreeof-freedom system with a rigid base, by replacing radiation damping by equivalent material damping. Using the developed model, the nonlinear behavior of soil is evaluated by classical model analysis with bedrock response spectrum directly. Finally, the free field response spectrum is obtained directly from the input bedrock response spectrum by using a method developed for calculating the floor response spectrum. To demonstrate the validity and usefulness of this approach, eight examples are presented. The free field response spectra of these eight soil profiles are obtained using our proposed method, and are then compared with the results obtained using the SHAKE program. The results of our proposed procedure are found to be accurate.

000018424 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018424 653__ $$asite effect, response spectrum, response spectrum method.

000018424 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018424 720__ $$aZhang, Haizhong$$iZhao, Yan-Gang$$iSaito, Takasuke
000018424 8560_ $$ffischerc@itam.cas.cz
000018424 8564_ $$s379161$$uhttps://invenio.itam.cas.cz/record/18424/files/1430.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1430.
000018424 962__ $$r16048
000018424 980__ $$aPAPER