GNGTS 2019 - Atti del 38° Convegno Nazionale

524 GNGTS 2019 S essione 2.3 Bibliografia Farrar C., Doebling S., Nix D. (2001). Vibration-based structural damage identification. Philosophical Transaction A, 359 (1778), 131. Haroun M.A. (1983). Vibration studies and test of liquid storage tanks. Earthquake Engineering and Structural Dynamics, vol. 11, 179-206. Kim, S., Torbol, M., & Chou, P. (2013). Remote structural health monitoring systems for next generation SCADA. Smart Structures and Systems, 11, 511–531. Reynders E., Schevenels M., De Roeck G. (2014). MACEC 3.3 a Matlab toolbox for experimental and operational modal analysis. Faculty of Engineering Department of Civil Engineering structural Mechanics Section. Rainieri, C. and Fabbrocino, G. (2014). Operational Modal Analysis of Civil Engineering Structures: An Introduction and Guide for Applications, Springer, New York, 322 p. Rainieri C., Fabbrocino G. (2015). Development and validation of an automated operational modal analysis algorithm for vibration-based monitoring and tensile load estimation. Mechanical Systems and Signal Processing, vol. 60- 61, p. 512-534. Salzano E., Agreda A.G., Di Carluccio A., Fabbrocino G. (2009) Risk assessment and early warning systems for industrial facilities in seismic zones. Reliability Engineering & System Safety, 94(10), 1577-1584. TESTING CAMPAIGN IN SUPPORT OF SEISMIC RISK ANALYSIS OF MASONRY BUILDINGS SUBJECTED TO EARTHQUAKES INDUCED BY GAS EXTRACTION F. Graziotti 1,2 , A. Penna 1,2 , G. Magenes 1,2 , R. Pinho 1,2 1 Dept. of Civil Engineering and Architecture, DICAr, University of Pavia, Italy 2 European Centre for Training and Research in Earthquake Engineering, EUCENTRE, Pavia, Italy Abstract. The Groningen region of the Netherlands, historically not prone to tectonic ground motions, in the last decades was subjected to seismic events induced by gas extraction and consequent reservoir depletion. This brief summary paper presents the methodology adopted to support the assessment of the seismic vulnerability of buildings in the area by means of a comprehensive testing programme. The peculiarity of the input ground motions, the distinctive features and a general lack of knowledge on the seismic response of the building stock and the goal to assess also the collapse probability drove towards the design and execution of a comprehensive testing campaign ranging from in-situ tests to full-scale shaking table tests of buildings. Introduction. The province of Groningen, in the northern Netherlands is not prone to tectonic earthquakes, but it recently experienced seismic events induced by the exploitation of the large gas field which extends under the region (Bommer et al. 2016). Local structures, mostly unreinforced masonry (URM), were exposed to low intensity motions causing minor damage. Seismicity induced by various man-related activities has been studied several decades while its effects on structures has been poorly investigated. This called for a large research effort specifically addressed at evaluating the vulnerability of the building stock (Crowley et al. 2018), with a specific focus on the URM buildings. An extensive experimental campaign launched in 2014 aimed at investigating the performance of masonry components, assemblies, structural members and building prototypes in pursuance of improving numerical models and analytical predictions. Several factors characterized this study as innovative and original. They include but are not limited to: • the very limited knowledge of the seismic behaviour of the building stock, which was never conceived and built for earthquake resistance, and presents specific peculiarities in the common structural solutions (e.g. cavity walls, high slenderness of piers, lack of