TY - GEN
T1 - Surface generation of asynchronous seismic signals for the seismic response analysis of bridges
AU - Lavorato, Davide
AU - Fiorentino, Gabriele
AU - Bergami, Alessandro V.
AU - Ma, Hai Bin
AU - Nuti, Camillo
AU - Briseghella, Bruno
AU - Vanzi, Ivo
AU - Zhou, Wei Dong
PY - 2017
Y1 - 2017
N2 - The seismic signals, recorded at different surface points during the propagation of the seismic waves through soil, show differences due to the soil-wave interaction. The seismic design actions should be evaluated properly in case of distant foundation points as these differences can be great. In this paper, asynchronous seismic signals are generated at surface starting from a few well-known recordings for the same seismic event. The EW accelerometric components of the main shock recorded at two recording stations (AQA, AQV) near L'Aquila city (Italy) on 4-06-2009 are the generation inputs. The seismic wave propagates along the direction between AQA and AQV. These signals are representative of a possible asynchronous excitation applied on a bridge. Five arrays of asynchronous accelerograms are generated at the foundations of the bridge to perform statistical elaboration of the results. Different bridge positions are supposed along the propagation direction of the wave to evaluate the spatial variability of the generated signals. The generated signals at AQA and AQV stations are compared with the available recordings at the same points (generation inputs) in term of power spectra, acceleration and displacement response spectra. Finally, the most detrimental soil distortions for the bridge deck are calculated for some bridge positions.
AB - The seismic signals, recorded at different surface points during the propagation of the seismic waves through soil, show differences due to the soil-wave interaction. The seismic design actions should be evaluated properly in case of distant foundation points as these differences can be great. In this paper, asynchronous seismic signals are generated at surface starting from a few well-known recordings for the same seismic event. The EW accelerometric components of the main shock recorded at two recording stations (AQA, AQV) near L'Aquila city (Italy) on 4-06-2009 are the generation inputs. The seismic wave propagates along the direction between AQA and AQV. These signals are representative of a possible asynchronous excitation applied on a bridge. Five arrays of asynchronous accelerograms are generated at the foundations of the bridge to perform statistical elaboration of the results. Different bridge positions are supposed along the propagation direction of the wave to evaluate the spatial variability of the generated signals. The generated signals at AQA and AQV stations are compared with the available recordings at the same points (generation inputs) in term of power spectra, acceleration and displacement response spectra. Finally, the most detrimental soil distortions for the bridge deck are calculated for some bridge positions.
KW - Asynchronous signals
KW - Bridge design
KW - Numerical generation
KW - Signal elaboration
KW - Soil distortions
UR - http://www.scopus.com/inward/record.url?scp=85042493379&partnerID=8YFLogxK
U2 - 10.7712/120117.5560.18098
DO - 10.7712/120117.5560.18098
M3 - Conference Contribution (Conference Proceeding)
AN - SCOPUS:85042493379
T3 - COMPDYN 2017 - Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
SP - 2203
EP - 2213
BT - COMPDYN 2017 - Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
A2 - Papadrakakis, M.
A2 - Fragiadakis, Michalis
PB - National Technical University of Athens
T2 - 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2017
Y2 - 15 June 2017 through 17 June 2017
ER -