000019506 001__ 19506
000019506 005__ 20170118182321.0
000019506 04107 $$aeng
000019506 046__ $$k2017-01-09
000019506 100__ $$aMurià-Vila, David
000019506 24500 $$aInfluence of Soil-Structure Interaction and Subsoil Consolidation in the Seismic Response of a Building

000019506 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019506 260__ $$b
000019506 506__ $$arestricted
000019506 520__ $$2eng$$aNowadays, there are a few dozen of seismically-instrumented buildings in Mexico, from which one of the best instrumented was selected for this paper (PC building). The building is a 17-storey reinforced concrete structure located in Mexico City. It is founded on soft soil through an embedded box supported on friction piles. The building is one of the several structures that were damaged during the Michoacán earthquake (September 19th of 1985, Mw =8.1) and it was later retrofitted. Since 1990 an accelerometer network is operating in the building. Twenty-five seismic events have been recorded and analyzed through these 26 years of continuous monitoring. The maximum responses recorded in the building until 2015 in terms of maximum acceleration and displacement have been 0.22 g and 24 cm respectively. The maximum drift, calculated by dividing the relative displacements by the vertical distance between instrumented stories, has been 0.55%. The purpose of this paper is to present the variations of the vibration frequencies of the soil-structure system and the vibration frequencies of the structure excluding the effects of soil-structure interaction (SSI). In addition, the influence of the building damage and of the increase of the site dominant frequency in defining the vibration frequency of the whole soil-structure system is discussed. The analyses of the aforementioned records are studied with a simplified model and by using a system identification technique based on the Modal Minimization Method (MM model). Both models are used to identify the vibration frequencies of fixed-base buildings and to evaluate if the frequency variations of the systems correlate with SSI effects. It was found that the MM model is a useful tool for identifying the frequencies of the fixed base building, the movement of the base, and of the whole system.

000019506 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019506 653__ $$astructural monitoring, earthquake records, soil-structure interaction, subsoil consolidation, structural damage

000019506 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019506 720__ $$aMurià-Vila, David$$iCamargo, José$$iAldama, Baruo
000019506 8560_ $$ffischerc@itam.cas.cz
000019506 8564_ $$s1543250$$uhttps://invenio.itam.cas.cz/record/19506/files/3786.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3786.
000019506 962__ $$r16048
000019506 980__ $$aPAPER