000019452 001__ 19452
000019452 005__ 20170118182319.0
000019452 04107 $$aeng
000019452 046__ $$k2017-01-09
000019452 100__ $$aBoroschek, Ruben
000019452 24500 $$aStructural Health Monitoring of Torre Central  By the Wave Method

000019452 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019452 260__ $$b
000019452 506__ $$arestricted
000019452 520__ $$2eng$$aThis paper presents preliminary structural health monitoring analysis of Torre Central, a 9-story reinforced concrete (RC) shear wall building in Santiago de Chile, by the wave method using recorded accelerations during 51 earthquakes over a period of two years (2009-2011). The set includes the M8.8 Maule earthquake of February 27, 2010. The building was 110 km from the rupture and was lightly damaged from this earthquake. The method is based on identifying the velocity of vertically propagating waves through the structure, which is related to the structural stiffness, and monitoring its changes. In this paper, the velocity is identified by fitting a 2-layer shear beam model in the observed response by matching, in the least squares sense, pulses in impulse responses. Only the EW response is analyzed. Two types of analysis are presented. The Maule earthquake response was analyzed in moving windows of lengths 10 s, 15 s and 20 s. The results show permanent drop in wave velocity ~20%. Additionally, all 51 events were analyzed in single time windows. Plots of the identified wave velocities vs. interstory drift show decreasing wave velocity with increasing drift and permanent change of ~11% in wave velocity at small strain level (peak drift ~10-6). The changes in wave velocity are in general agreement with published results on changes in the frequencies of vibration.

000019452 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019452 653__ $$astructural health monitoring; wave method; wave propagation in buildings; Maule, Chile earthquake of 2010

000019452 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019452 720__ $$aBoroschek, Ruben$$iTodorovska, Maria$$iHao, Tzong-Ying$$iRahmani, Mohammadtaghi
000019452 8560_ $$ffischerc@itam.cas.cz
000019452 8564_ $$s1904598$$uhttps://invenio.itam.cas.cz/record/19452/files/3651.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3651.
000019452 962__ $$r16048
000019452 980__ $$aPAPER