000019193 001__ 19193
000019193 005__ 20170118182303.0
000019193 04107 $$aeng
000019193 046__ $$k2017-01-09
000019193 100__ $$aLiu, C. Y.
000019193 24500 $$aDamage Assessment of a Building Under An Earthquake Via the Tvarx Model and Bayesian Approach

000019193 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019193 260__ $$b
000019193 506__ $$arestricted
000019193 520__ $$2eng$$aThe work proposes a procedure for the damage assessment of a building under a strong earthquake. The Cauchy wavelet transform is applied to the measured acceleration responses of a building and a time-varying autoregressive with exogenous input (TVARX) model with time-variant coefficients expanded as piecewise polynomial functions. The time-variant modal parameters of the building are directly identified from the coefficients of the appropriately established TVARX model. A Bayesian approach for dynamical model updating is employed to identify the variations of stiffness components with time using those identified time-varying modal parameters. Consequently, the damaged stories of the building are located and the severity of the damage can be determined. The proposed approach is validated through processing the numerically simulated acceleration responses of a six-story shear building with time varying stiffness and damping under base excitation with considering the effects of noise and incomplete measurement. Finally, the proposed approach is applied to handle the acceleration responses of a five-story steel frame in a shaking table test with a strong earthquake input. The frame is 3 m long, 2 m wide and 6.5 m high, and its columns of the first story yield during the test.

000019193 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019193 653__ $$aDamage assessment; Building; TVARX model; Bayesian approach

000019193 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019193 720__ $$aLiu, C. Y.$$iHuang, C. S.$$iSu, W. C.
000019193 8560_ $$ffischerc@itam.cas.cz
000019193 8564_ $$s718922$$uhttps://invenio.itam.cas.cz/record/19193/files/3063.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3063.
000019193 962__ $$r16048
000019193 980__ $$aPAPER