The structural role played by masonry infills on RC building performances after the 2011 Lorca, Spain, earthquake

The final publication is available at Spriger via http://dx.doi.org/10.1007/s10518-013-9500-1On May 11, 2011 an earthquake of magnitude 5.1 (Mw) struck Murcia region causing nine casualties and damage to buildings and infrastructures. Even if the main characteristics of the event would classify it as a moderate earthquake, the maximum Peak Ground Acceleration (PGA) registered (equal to 0.37 g) exceeded significantly local code provisions in terms of hazard at the site. This high PGA was a result of directivity effects in the near source region. An overview of earthquake characteristics and damage observed is provided. Notwithstanding the lack of proper structural design characterizing building stock in the area, most of the losses were caused by non-structural damage. According to in field observations, it emerges that masonry infills provided additional, not designed , strength to reinforced concrete (RC) buildings. Observed damage data, collected after the earthquake, are shown and compared to the results of a simplified approach for nonstructural damage assessment of RC infilled structures (FAST vulnerability approach). The latter comparison provided a fair accordance between observed data and analytical results.The work presented has been developed in cooperation with Rete dei Laboratori Universitari di Ingegneria Sismica-ReLUIS-Linea 1.1.2. for the research program funded by the Dipartimento della Protezione Civile (2010-2013).De Luca, F.; Verderame, GM.; Gómez Martínez, F.; Pérez García, AJ. (2014). The structural role played by masonry infills on RC building performances after the 2011 Lorca, Spain, earthquake. Bulletin of Earthquake Engineering. 12(5):1999-2026. doi:10.1007/s10518-013-9500-1S19992026125Alarcón E, Astiz MA, Benito MB, Álvarez R, Maeso O, Bernal A, Hermanns L (2010) Informe final sobre [...] la propuesta del anexo nacional español a la norma europea en 1998 (Eurocódigo 8), Ref: CMM\_IGN\_0210. Centro de Modelado en Ingeniería MecánicaAmerican Society of Civil Engineers (ASCE) (2007) Seismic rehabilitation of existing buildings. ASCE/SEI 41–06, Reston, VirginiaATC3-06 (1978) Tentative provisions for the development of seismic regulations for buildings. Report No. ATC3-06, Applied Technology Council, Palo Alto, CAATC-40 (1996) Seismic evaluation and retrofit of concrete buildings. Applied Technology Council (ATC), Redwood City, CaliforniaBaker JW (2007) Quantitative classification of near-fault ground motions using wavelet analysis. Bull Seismol Soc Am 97:1486–1501Benavent-Climent A (2007) Seismic behavior of RC wide beam-column connections under dynamic loading. J Earthq Eng 11:493–511Benavent-Climent A, Akiyama H, Lopez-Almansa F, Pujades LG (2004) Prediction of ultimate earthquake resistance of gravity-load designed RC buildings. Eng Struct 26:1103–1113Benavent-Climent A, Cahìs X, Catalàn A (2008) Seismic behavior of interior connections in existing waffle-flat-plate structures. Eng Struct 30:2510–2516Biskinis DE, Roupakias GK, Fardis MN (2004) Degradation of shear strength of reinforced concrete members with inelastic cyclic displacement. ACI Struct J 101:773–783Borzi B, Elnashai A (2000) Refined force reduction factor for seismic design. Eng Struct 22:1244–1260Borzi B, Pinho R, Crowley H (2008) Simplified pushover-based vulnerability analysis for large scale assessment of RC buildings. Eng Struct 30(3):804–820Cabañas L, Carreño E, Izquierdo A, Martínez JM, Capote R, Martínez J, Benito B, Gaspar J, Rivas A, García J, Pérez R, Rodríguez MA, Murphy P (2011) Informe del sismo de Lorca del 11 de mayo de 2011. IGN, UCM, UPM, IGME, AEIS. http://www.ign.es/ign/resources/sismologia/Lorca.pdfCalconsa XXI (2011) Photographic report of the building “Menorca”, Avda. de las Fuerzas Armadas, 28–30-32, 30800 Lorca (Murcia), Spain. www.calconsa.comCEN (2004) Eurocode 8: design of structures for earthquake resistance-part 1: general rules, seismic actions and rules for buildings. European Standard EN 1998–1:2003- Comité Européen de Normaliation, BrusselsCEN (2005) Eurocode 8: design of structures for earthquake resistance-part 3: assessment and retrofitting of buildings, European Standard EN 1998–1:2005- Comité Européen de Normaliation, BrusselsChioccarelli E, De Luca F, Iervolino I (2009) Preliminary study on L’Aquila earthquake ground motion records, V5.20. http://www.reluis.it/Chopra AK (2007) Dynamics of the structures, 3rd edn. Prentice Hall, Upper Saddle River New YerseyCS.LL.PP (2009) Istruzioni per l’applicazione delle norme tecniche delle costruzioni. Gazzetta Ufficiale della Repubblica Italiana, 47. (in Italian)Colangelo F (2012) A simple model to include fuzziness in the seismic fragility curve and relevant effect compared with randomness. Earthq Eng Struct Dyn 41:969–986Cornell CA, Krawinkler H (2000) Progress and challenges in seismic performance assessment. PEER News, AprilCrowley H, Pinho R (2010) Revisiting Eurocode 8 formulae for periods of vibration and their employment in linear seismic analysis. Earthq Eng Struct Dyn 39(2):223–235De Luca F (2012) Records, capacity curve fits and reinforced concrete damage states within a performance based earthquake engineering framework. Ph.D. Thesis. University of Naples Federico II, Naples, Italy. Available at http://wpage.unina.it/flavia.deluca/outreach.htmDe Luca F, Verderame GM (2013) A practice-oriented approach for the assessment of brittle failures in existing RC elements. Eng Struct 48:373–388De Luca F, Vamvatsikos D, Iervolino I (2013) Near-optimal piecewise linear fits of static pushover capacity curves for equivalent SDOF analysis. Earthq Eng Struct Dyn 42(4):523–543Dolce M, Cardone D, Ponzo FC, Valente C (2005) Shaking table tests on reinforced concrete frames without and with passive control systems. Earthq Eng Struct Dyn 34:1687–1717Dolšek M, Fajfar P (2001) Soft storey effects in uniformly infilled reinforced concrete frames. J Earthq Eng 5(1):1–12Dolšek M, Fajfar P (2004) Inelastic spectra for infilled reinforced concrete frames. Earthq Eng Struct Dyn 33:1395–1416Dolšek M, Fajfar P (2005) Simplified non-linear seismic analysis of infilled reinforced concrete frames. Earthq Eng Struct Dyn 34:49–66Dolšek M, Fajfar P (2008) The effect of masonry infills on the seismic response of a four storey reinforced concrete frame-a probabilistic assessment. Eng Struct 30(11):3186–3192EHE (1999) Instrucción de hormigón estructural. Comisión permanente del hormigón estructural, Ministerio de Fomento, MadridEHE-08 (2008) Instrucción de hormigón estructural. Comisión permanente del hormigón estructural, Ministerio de Fomento, MadridEnomoto T, Schmitz M, Abeki N, Masaki K, Navarro M, Rocavado V, Sanchez A (2000) Seismic risk assessment using soil dynamics in Caracas, Venezuela. In: Proceedings of the 12th World Conference on earthquake engineering, Auckland, New ZelandErdik M, Durukal E, Siyahi B, Fahjan Y, Sesetyan K, Demircioglu M, Akman H (2004) Earthquake risk mitigation in Istanbul, Chap 7. In: Mulargia F, Geller RJ (eds) Earthquake science and seismic risk reduction. Kluwer, DordrechtFajfar P (1999) Capacity spectrum method based on inelastic demand spectra. Earthq Eng Struct Dyn 28:979–993Fardis MN (1997) Experimental and numerical investigations on the seismic response of RC infilled frames and recommendations for code provisions. Report ECOEST-PREC8 No 6. Prenormative research in support of Eurocode 8Fardis MN (2009) Seismic design, assessment and retrofitting of concrete buildings based on EN-Eurocode 8. Springer, BerlinFEMA (1994) NEHRP recommended provisions for seismic regulations for new buildings. FEMA 273, Federal Emergency Management Agency, Washington, DCFeriche M, Vidal F, Alguacil G, Navarro M, Aranda C, Vulnerabilidad y daño en el terremoto de Lorca de 2011 (2012) $$7^{\rm a}$$ 7 a Asamblea hispano-portuguesa de Geodesia y Geofísica. San Sebastián, 25–29 de junio de 2012Feriche M, y Equipo de Trabajo del IAGPDS (2011) Efectos del Terremoto de Lorca en las edificaciones. Available at http://www.ugr.es/~iag/lorca/Efecto_edificaciones.pdf . Last accessed 03–2013Galasso C, Cosenza E, Maddaloni G (2010) Statistical analysis of reinforcing steel properties for seismic design of RC structures. In: Proceedings of the 14th European Conference on earthquake engineering, Aug 30–Sept 3, Ohrid, Republic of MacedoniaGalasso C, Cosenza E, Maddaloni G (2013) Uncertainty analysis of flexural overstrength for new designed RC beams. ASCE J Struct Eng (under review)Goretti A, Di Pasquale G (2006) Technical emergency management. In: Oliveira CS, Roca A, Goula X (eds) Assessing and managing earthquake risk, chapter 16. Springer, BerlinGrunthal G (ed) (1998) European macroseismic scale 1998. Cahiers du Centre Europeen de Geodynamique et de Seismologie, 7, LuxembourgIervolino I, De Luca F, Cosenza E (2010) Spectral shape-based assessment of SDOF nonlinear response to real, adjusted and artificial accelerograms. Eng Struct 32:2776–2792IGN (2011) Seismic catalog: database. Service of seismic informationKalkan E, Kunnath SK (2008) Relevance of absolute and relative energy content in seismic evaluation of structures. Adv Struct Eng 11:1–18Kircher CA, Nassar AA, Kutsu O, Holmes WT (1997) Development of building damage functions for earthquake loss estimation. Earthq Spectra 13(4):663–681Kobayashi H, Vidal F, Feriche D, Samano T, Alguacil G (1996) Evaluation of dynamic behavior of building structures with microtremors for seismic microzonation mapping. In: Proceedings of the 11th World Conference on earthquake engineering, Acapulco, Mexico Paper 1769Krawinkler H, Miranda E (2004) Performance-based earthquake engneering. In: Bozorgnia Y, Bertero VV (eds) Earthquake engineering: from engineering seismology to performance-based engineering, chapter 9. CRC Press, Boca Raton, FLLam N, Wilson J, Hutchinson G (2000) Response spectrum modelling for rock sites in low and moderate seismicity regions combining velocity, displacement and acceleration predictions. Earthq Eng Struct Dyn 29:1491–1525Mainstone RJ (1970) On the stiffnesses and strengths of infilled frames. In: Proceedings of the institution of civil engineering, Supplement IV, pp 57–90Manfredi G (2001) Evaluation of seismic energy demand. Earthq Eng Struct Dyn 30:485–499Manfredi G, Ricci P, Verderame GM (2012) Influence of infill panels and their distribution on seismic behavior of existing reinforced concrete buildings. Open Constr Build Technol J 6(Suppl 1–M1):236–253Manfredi G, Verderame GM, Prota A, Ricci P, De Luca F (2013) 2012 Emilia earthquake. Italy, Reinforced concrete buildings response. Bull Earthq Eng (accepted for publication)Mezcua J, Rueda J, García RM (2011) A new probabilistic seismic hazard study of Spain. Nat Hazards 59:1087–1108MV 101 (1962) Acciones en la edificación, BOE 1963 N $$^{{\rm o}}$$ o 35, MadridNavarro M, Oliveira CS (2004) Evaluation of dynamic characteristics of reinforced concrete buildings in the City of Lisbon. 4th Assembly of the Portuguese-Spanish of Geodesy and Geophysics, Figueira da Foz, PortugalNavarro M, Garcìa-Jerez A, Alcalà FJ, Vidal F, Aranda C, Enomoto T (2012) Analysis of site effects, building response and damage distribution observed due to the 2011 Lorca, Spain, earthquake. In: Proceedings of the 15th World Conference on earthquake engineering, Lisbon, PortugalNavarro M, Sànchez FJ, Feriche M, Vidal F, Enomoto T, Iwatate T, Matsuda I, Maeda T (2002) Statistical estimation for dynamic characteristics of existing buildings in Granada, Spain, using microtremors. Structural Dynamics, Eurodyn 2002, I, 807–812, BalkemaNCSE-02 (2002) Norma de construcción sismorresistente, BOE 2002 N $$^{{\rm o}}$$ o 244, MadridNCSR-94 (1994) Norma de construcción sismorresistente, BOE 1995 N $$^{{\rm o}}$$ o 33, MadridNIBS, National Institute of Building Science (1997, 1999 and 2002) Earthquake loss estimation methodology. HAZUS. Technical manuals. Federal Emergency Management Agency (FEMA), Washington, vol 1, 2, 3. ( http://www.fema.gov/hazus/ )Oliveira CS (2004) Actualização das bases-de-dados sobre frequências próprias de estruturas de edifícios, pontes, viadutos e passagens de peões a partir de medições expeditas in-situ. 5th Portuguese Conference on Earthquake Engineering, University of Minho, Guimarães (in Portuguese)Oliveira CS, Navarro M (2010) Fundamental periods of vibration of RC buildings in Portugal from in-situ experimental and numerical techniques. Bull Earthq Eng 8(3):609–642PDS-1 Parte A (1974) Norma sismorresistente, BOE 1974 N $$^{{\rm o}}$$ o 279, MadridPGS-1 Parte A (1968) Norma sismorresistente, BOE 1968 N $$^{{\rm o}}$$ o 30, MadridRegalado F, Lloret V (2011) Análisis y reflexiones sobre los terremotos del 11 de mayo del 2011 acontecidos en Lorca (sugerencias para el futuro), FR &ARicci P, De Luca F, Verderame GM (2011a) 6th April 2009 L’Aquila earthquake, Italy—reinforced concrete building performance. Bull Earthq Eng 9(1):285–305Ricci P, Verderame GM, Manfredi G, Pollino M, Borfecchia F, De Cecco L, Martini S, Pascale C, Ristoratore E, James V (2011b) Seismic vulnerability assessment using field survey and remote sensing techniques. In: Murgante B, Gervasi O, Iglesias A, Taniar D, Apduhan BO (eds) Computational science and its applications—ICCSA 2011. Springer, BerlinRicci P, Verderame GM, Manfredi G (2011c) Analytical investigation of elastic period of infilled RC MRF buildings. Eng Struct 33(2):308–319Rossetto T, Peiris N (2009) Observations of damage due to the Kashmir earthquake of October 8, 2005 and study of current seismic provisions for buildings in Pakistan. Bull Earthq Eng 7(3):681–699Sezen H, Moehle JP (2004) Shear strength model for lightly reinforced concrete columns. ASCE J Struct Eng 130(11):1692–1703Uang C, Bertero VV (1990) Evaluation of seismic energy in structures. Earthq Eng Struct Dyn 19:77–90Verderame GM, De Luca F, De Risi MT, Del Gaudio C, Ricci P (2012) A three level vulnerability approach for the damage assessment of infilled RC buildings: the Emilia 2012 case, V1.0. Available at http://www.reluis.it/Verderame GM, Ricci P, De Luca F, Del Gaudio C, De Risi MT (2013) Damage scenarios for RC buildings during the 2012 Emilia (Italy) earthquake. Soil Dyn Earthq Eng (under review)Verderame GM, De Luca F, Ricci P, Manfredi G (2011) Preliminary analysis of a soft-storey mechanism after the 2009 L’Aquila earthquake. Earthq Eng Struct Dyn 40(8):925–944Vidal F, Alguacil G, Feriche M, Aranda C, Morales J, Stich D, Pérez Muelas J, Benito J, López JM (2011) El terremoto de Lorca: Mayo 2011. Causas del impacto y primeras medidas. Análisis preliminar. Informe IAGPDS, Universidad de Granada. http://www.ugr.es/~iag/lorca/Impacto_Lorca.pdfVidic T, Fajfar P, Fischinger M (1994) Consistent inelastic design spectra: strength and displacement. Earthq Eng Struct Dyn 23:502–521Vielma JC, Barbat AH, Oller S (2010) Seismic safety of low ductility structures used in Spain. Bull Earthq Eng 8:135–155VV.AA (2006) Riesgo Sísmico de la Comunidad Autónoma de la Región de Murcia (RISMUR). 6 Vols. Instituto Geográfico Nacional y Dirección General de Protección Civil CAR

Gender under the mat. Conversations about body/bodies in Physical Education

.El siguiente artículo refiere a un análisis de una experiencia de taller virtual, al que fuimos invitadas para conversar acerca de la Educación Física y el género. Pareciera que en algunos espacios de la Educación Física, hablar de género y sexualidades es una temática en la que suscita el silencio y el ocultamiento. La intención de pensar lo oculto del género en la Educación Física nos llevó a preguntarnos por el modo de mirar los cuerpos, que aparece en este campo disciplinar. A partir de los diálogos con lxs participantes de la charla: “El género debajo de la colchoneta. Conversaciones sobre cuerpo(s) en Educación Física” , emergen elementos que van dando cuenta de los modos de mirar lxs cuerpos y nos da lugar a revisitar las zonas en las que se cristaliza el saber de la disciplina y los recorridos, rasgos y trazos teóricos que fueron construyendo la manera de mirar el cuerpo en la pedagogía corporal, para pensar los límites de una posible educación sexual en clave de Educación Física.The following article refers to an analysis of a virtual workshop experience, to which we were invited to talk about Physical Education and gender. It seems that in some areas of Physical Education, talking about gender and sexualities is a theme in which it elicits silence and concealment. The intention of thinking about the hidden nature of gender in Physical Education led us to ask ourselves about the way of looking at bodies that appears in this disciplinary field. From the dialogues with the participants in the talk: “The gender under the mat. Conversations about body (s) in Physical Education”, elements emerge that account for these modes and give us the opportunity to revisit the areas in which the knowledge of the discipline is crystallized and the routes, theoretical traits and lines that were building the way of looking at the body in body pedagogy, to think the limits of a possible sexual education in key of the Physical Education.Facultad de Humanidades y Ciencias de la Educació

Clinical validation of eye vergence as an objective marker for diagnosis of ADHD in children

Objective: ADHD youth show poor oculomotor control. Recent research shows that attention-related eye vergence is weak in ADHD children. Method: To validate vergence as a marker to classify ADHD, we assessed the modulation in the angle of vergence of children (n = 43) previously diagnosed with ADHD while performing an attention task and compared the results with age-matched clinical controls (n = 19) and healthy peers (n = 30). Results: We observed strong vergence responses in healthy participants and weak vergence in the clinical controls. ADHD children showed no significant vergence responses. Machine-learning models classified ADHD patients (n = 21) from healthy controls (n = 21) with an accuracy of 96.3% (false positive [FP]: 5.12%; false negative [FN]: 0%; area under the curve [AUC]: 0.99) and ADHD children (n = 11) from clinical controls (n = 14) with an accuracy of 85.7% (FP: 4.5%; FN: 19.2%, AUC: 0.90). Conclusion: In combination with an attention task, vergence responses can be used as an objective marker to detect ADHD in children.Peer ReviewedPostprint (author's final draft

Motricidad sin clave de género: un análisis sobre la función social de la Educación Física

Para esta ponencia presentaremos un análisis sobre los discursos históricos y actuales acerca de la motricidad, que sostienen algunas líneas de las prácticas de enseñanza en Educación Física para pensar los recorridos epistemológicos que sustentan la relación entre la Educación Física y el Género en clave de función social. Para ello es necesario recuperar lo planteado por ciertos autores latinoamericanos cuando intentan explicar los discursos que constituyen el campo disciplinar de la Educación Física.Facultad de Humanidades y Ciencias de la Educació

Emprendedores digitales : una aproximación a los procesos de creación de tecnologías e innovación en las industrias creativas en Buenos Aires

La ponencia, que se enmarca en una investigación en curso llevada adelante por el Equipo E-SIC (IIGG/UBA), reflexiona sobre los procesos de creación e innovación de bienes y servicios digitales que desarrollan emprendedores de negocios en la Ciudad de Buenos Aires. En el marco de las industrias culturales y creativas, se producen creaciones digitales que pueden (o no) constituirse en emprendimientos; y, a su vez, generar innovaciones sociales, culturales, económicas y/o tecnológicas. Esta presentación indaga sobre el capital simbólico de los y las emprendedore/as. Para ello estudiamos las historias familiares, la educación y el contexto cultural de los y las emprendedoras, así como sus percepciones e imaginarios sobre lo que implica innovar y emprender en tecnologías digitales. A su vez, el trabajo da cuenta de las características de la apropiación de tecnologías, creación e innovación que llevan a cabo con sus proyectos. Se implementó un abordaje cualitativo de investigación, que incluyó la observación participante en eventos destinados al emprendedorismo y entrevistas en profundidad a emprendedores de negocios en la Ciudad de Buenos AiresFil: Lago Martínez, Silvia. Universidad de Buenos Aires.Fil: Samaniego, Flavia. Universidad de Buenos Aires.Fil: Gala, Romina . Consejo Nacional de Investigaciones Científicas y Técnicas

Motricidad sin clave de género: un análisis sobre la función social de la Educación Física

Para esta ponencia presentaremos un análisis sobre los discursos históricos y actuales acerca de la motricidad, que sostienen algunas líneas de las prácticas de enseñanza en Educación Física para pensar los recorridos epistemológicos que sustentan la relación entre la Educación Física y el Género en clave de función social. Para ello es necesario recuperar lo planteado por ciertos autores latinoamericanos cuando intentan explicar los discursos que constituyen el campo disciplinar de la Educación Física.Facultad de Humanidades y Ciencias de la Educació

Thermodynamics’ zeroth law in a nonextensive scenario

We show how to reconcile Tsallis’ thermostatistics with thermodynamics’ zeroth law, by recourse to the so-called optimal Lagrange multipliers formalism. The central concept is that of not identifying in the usual fashion the inverse temperature with the Lagrange multiplier associated to the internal energy. Our analysis provides one with compatibility conditions between the additivity of the internal energy and the pseudo-additivity of the generalized entropy. With regards to the first law of thermodynamics, a generalization of Clausius’ equation is advanced.Facultad de Ciencias ExactasInstituto de Física La Plat

Motricidad sin clave de género: un análisis sobre la función social de la Educación Física

Para esta ponencia presentaremos un análisis sobre los discursos históricos y actuales acerca de la motricidad, que sostienen algunas líneas de las prácticas de enseñanza en Educación Física para pensar los recorridos epistemológicos que sustentan la relación entre la Educación Física y el Género en clave de función social. Para ello es necesario recuperar lo planteado por ciertos autores latinoamericanos cuando intentan explicar los discursos que constituyen el campo disciplinar de la Educación Física.Facultad de Humanidades y Ciencias de la Educació

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We present necessary and sufficient conditions for a monotone bifunction to be maximally monotone, based on a recent characterization of maximally monotone operators. These conditions state the existence of solutions to equilibrium problems obtained by perturbing the defining bifunction in a suitable way