Print Email Facebook Twitter Wavelet-based evolutionary response of multi-span structures including wave-passage and site-response effects Title Wavelet-based evolutionary response of multi-span structures including wave-passage and site-response effects Author Dinh, V.N. Basu, B. Brinkgreve, R.B.J. Faculty Civil Engineering and Geosciences Department Geoscience & Engineering Date 2013-09-13 Abstract Stochastic seismic wavelet-based evolutionary response of multispan structures including wave-passage and site-response effects is formulated in this paper. A procedure to estimate site-compatible parameters of surface-to-bedrock frequency response function (FRF) by using finite-element analysis of the supporting soil medium is proposed. The earthquake energy content is represented by a composite power spectrum density function contributed by the surface-to-bedrock FRF and bedrock power spectra. A long span multisupport structure is subjected to spatially varying differential support motions where the spatial-variability is represented by bedrock parametric coherency models and time-lags. In addition to the time-lags from wave-passage effects, the site-response effects from different soil conditions at the supports are characterized by frequency-dependent time-lags. In an illustrative case study, a three-span, two-dimensional hangar frame is analyzed using the proposed formulations. The time-lags resulting from site-response effects and computed by different FRFs show different variation in trends and frequency content. The site-response effect is found to introduce additional frequency nonstationarity and leads to an increase in the frame responses but with slower attenuation in time. Subject seismic analysisamplitude and frequency nonstationary spatial variabilitysite-response effectwaveletsparametric frequency response function To reference this document use: http://resolver.tudelft.nl/uuid:a80efe82-f328-4e64-8feb-c098bf363a0c Publisher American Society of Civil Engineers ISSN 0733-9399 Source Journal of Engineering Mechanics, 140 (8), 2014; Authors version Other version https://doi.org/10.1061/(ASCE)EM.1943-7889.0000708 Part of collection Institutional Repository Document type journal article Rights (c) 2013 American Society of Civil Engineers Files PDF 303640.pdf 159.22 KB Close viewer /islandora/object/uuid:a80efe82-f328-4e64-8feb-c098bf363a0c/datastream/OBJ/view