Dimensionnement simplifié d'amortisseurs visqueux non linéaires pour ponts en zone sismique

ABSTRACT At the moment, the design of non-linear viscous dampers used to reduce forces and displacements of bridges in seismic areas can only be done through non-linear time history analyses. We suggest here a very simple design tool based on elastic response spectra, given by the code, and a linearisation of the dashpot behaviour. This technique, developed for single degree-of-freedom oscillators is then extended to more complex bridge structures whose behaviour involves more than one mode and to other dynamic actions such as turbulent wind loads. Keywords : non-linear dampers, linearisation techniques, bridge design, earthquake engineering. Lire moins