This paper is devoted to the performance-based design of retaining walls under seismic actions. EC8 takes into account this kind of approach, both encouraging the utilization of dynamic analyses, and proposing reduction factor r in the simple pseudostatic method, whose value depends on the amount of “displacement” tolerable by the structure. In the recent Italian Building Code (2008) a better calibration of the seismic coefficients for the pseudostatic approach has been produced, based on the results of specific displacement analyses. According to the results obtained, it would be necessary to recalibrate the seismic coefficient now proposed in EC8. In this paper a further improvement in the design procedure of retaining walls is proposed, still based on the performance evaluation, which more effectively takes into account the principle of the “capacity design”, widely applied in structural design.
|Titolo:||Performance-based design of gravity retaining walls under seismic actions|
|Data di pubblicazione:||2009|
|Appare nelle tipologie:||2.1 Contributo in volume (Capitolo o Saggio)|