December 2011

Seismic hazard and deaggregation assessment at the nuclear power plants (NPP) sites in Spain using an updated seismological database

  In this paper we present the results obtained in the seismic hazard reassessment at the sites, in the free field, of the seven Spanish nuclear power plants (NPPs), six of them are still operative till date. The computation was done using the spatially-smoothed seismicity approach, and an updated seismic catalog. In most cases, the results do not greatly differ from those previously reported. In addition, at...

Author(s): José A. Peláez and Carlos López-Casado

December 2011

Ductility demand of structures with vertical irregularities subjected to pulse-like ground motions

  The present paper addresses the seismic displacement ductility demand of structures with vertical irregularities when subjected to velocity pulse-like ground motions. Specifically, the irregularities are in strength, stiffness, and combined strength-and-stiffness in the first storey of structures. A nonlinear dynamic time history analysis was performed based on lumped mass shear-type multi-degree-of-freedom...

Author(s): Jing Zhou, Guobin Bu and Jian Cai