000010782 001__ 10782
000010782 005__ 20141205155803.0
000010782 04107 $$aeng
000010782 046__ $$k2008-10-12
000010782 100__ $$aLu, Da-Gang
000010782 24500 $$aProbabilistic Seismic Demand Analysis Considering Random System Properties by an Improved Cloud Method

000010782 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010782 260__ $$b
000010782 506__ $$arestricted
000010782 520__ $$2eng$$aProbabilistic seismic demand analysis (PSDA) is an approach for computing the mean annual frequency of exceeding a specified seismic demand for a given structure at a designated site, which combines the conventional probabilistic seismic hazard analysis (PSHA) of the designated site with nonlinear dynamic analysis (NDA) of the given structure. Now PSDA has already become an important part of the new-generation Performance Based Earthquake Engineering (PBEE) proposed by PEER. The commonly used nonlinear demand estimation method in PSDA is the so called “cloud analysis” procedure in which a cloud of demand values are generated when a structure is subjected to a suite of earthquake ground motion records. However, this method can only take into account the record-to-record (RTR) variation in ground motions without considering the random system properties of structures. In this paper, an improved cloud method based on Latin Hypercube Sampling (LHS) method is proposed to build probabilistic seismic demand models (PSDM) to consider inherent randomness both in structures and in ground motions. Furthermore, probabilistic seismic demand fragility analysis (PSDFA) and probabilistic seismic demand hazard analysis (PSDHA) are made based on the improved probabilistic seismic demand models. The methodology is applied in a three-bay and five-storey R.C. frame as an example. The probabilistic seismic demand models with the conventional cloud method and the improved cloud method are compared, and the probabilistic seismic demand fragility curves and hazard curves are derived respectively.

000010782 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010782 653__ $$aSeismic Demand, Improved Cloud Method, Probabilistic Seismic Demand Model, Seismic Demand Fragility, Seismic Demand Hazard

000010782 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010782 720__ $$aLu, Da-Gang$$iYu, Xiao-Hui$$iPan, Feng$$iWang, Guang-Yuan
000010782 8560_ $$ffischerc@itam.cas.cz
000010782 8564_ $$s226685$$uhttps://invenio.itam.cas.cz/record/10782/files/05-01-0379.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0379.
000010782 962__ $$r9324
000010782 980__ $$aPAPER