Selection of Natural and Synthetic Accelerograms for Seismic Vulnerability Studies on Reinforced Concrete Frames

The choice of seismic input utilized in the evaluation of structural response is determined by the scope of the analysis, namely, the design of new buildings or damage scenarios on existing buildings. Further, a decision has to be made regarding the intensity measure better able to represent the damage potential of the earthquake. This work reports the results of a large set of nonlinear dynamic analyses on structural types representing reinforced concrete buildings widely present in the Italian and European built environments. Seismic input comes from both natural recordings and synthetic data. The maximum interstory drift has been selected as the response parameter better able to represent the structural and nonstructural damage level. The use of a computer code able to generate spectrum-compatible accelerograms showed that synthetic data provide output that is closer to a natural recording when the accelerograms are not forced to converge to a code response spectrum. The Housner intensity proved to be ...

[1]  Marco Vona,et al.  Empirical estimate of fundamental frequencies and damping for Italian buildings , 2009 .

[2]  Ahmed Ghobarah,et al.  SOFTENING EFFECTS ON THE SEISMIC RESPONSE OF NON-DUCTILE CONCRETE FRAMES , 1999 .

[3]  D. Herak,et al.  Empirical estimates of dynamic parameters on a large set of European buildings , 2010 .

[4]  Farzad Naeim,et al.  The Seismic Design Handbook , 1989 .

[5]  C. Cornell,et al.  Record Selection for Nonlinear Seismic Analysis of Structures , 2005 .

[6]  Angelo Masi,et al.  Experimental and numerical evaluation of the fundamental period of undamaged and damaged RC framed buildings , 2010 .

[7]  John B. Mander,et al.  Gravity Load-Designed Reinforced Concrete Buildings--Part II: Evaluation of Detailing Enhancements , 1995 .

[8]  John B. Mander,et al.  Seismic Resistance of Reinforced Concrete Frame Structures Designed for Gravity Loads: Performance of Structural System , 1995 .

[9]  M. V. Sivaselvan,et al.  Hysteretic Models for Cyclic Behavior of Deteriorating Inelastic Structures , 1999 .

[10]  J. Douglas,et al.  Internet site for European strong-motion data , 2004 .

[11]  Anaxagoras Elenas,et al.  Seismic duration effects on the vulnerability of buildings , 2006 .

[12]  R. Bouc.  Forced Vibration of Mechanical Systems with Hysteresis , 1967 .

[13]  Y. K. Wen,et al.  Damage-Limiting Aseismic Design of Buildings , 1987 .

[14]  John B. Mander,et al.  Gravity-load-designed reinforced concrete buildings - Part I: Seismic evaluation of existing construction , 1995 .

[15]  Anaxagoras Elenas,et al.  Interdependency between seismic acceleration parameters and the behaviour of structures , 1997 .

[16]  Anil K. Chopra,et al.  Dynamics of Structures: Theory and Applications to Earthquake Engineering , 1995 .

[17]  Amr S. Elnashai,et al.  The effect of material and ground motion uncertainty on the seismic vulnerability curves of RC structure , 2006 .

[18]  S. Kunnath,et al.  Relevance of Absolute and Relative Energy Content in Seismic Evaluation of Structures , 2008 .

[19]  Anaxagoras Elenas,et al.  Correlation between seismic acceleration parameters and overall structural damage indices of buildings , 2000 .

[20]  Mohammad Noori,et al.  Random Vibration of Degrading, Pinching Systems , 1985 .

[21]  Mervyn J. Kowalsky,et al.  Displacement-based seismic design of structures , 2007 .

[22]  Sashi K. Kunnath,et al.  Effective Cyclic Energy as a Measure of Seismic Demand , 2007 .

[23]  M. Romanelli,et al.  Short Note Site Effect of the Strong-Motion Site at Tolmezzo-Ambiesta Dam in Northeastern Italy , 2007 .

[24]  Angelo Masi,et al.  Seismic Vulnerability Assessment of Gravity Load Designed R/C Frames , 2003 .

[25]  F. Sabetta,et al.  Estimation of response spectra and simulation of nonstationary earthquake ground motions , 1996, Bulletin of the Seismological Society of America.

[26]  M. Dolce,et al.  Earthquake Damage Scenarios of the Building Stock of Potenza (Southern Italy) Including Site Effects , 2003 .

[27]  Angelo Masi,et al.  Estimation of the Period of Vibration of Existing RC Building Types Based on Experimental Data and Numerical Results , 2009 .

[28]  Nicolas Luco,et al.  Structure-Specific Scalar Intensity Measures for Near-Source and Ordinary Earthquake Ground Motions , 2007 .