A critical issue in the probabilistic framework for performance-based earthquake engineering is the choice of ground motion intensity measure(s). In an effort to identify optimum intensity measure(s), a comprehensive parametric statistical study based on 881 earthquake record components was conducted to identify the correlation between (1) seismological variables (SV’s) and traditional ground m...

This paper presents results obtained by numerical study of sloshing effects in medium sized rectangular tanks subjected to a long-period seismic excitation. The Smoothed Particle Hydrodynamics (SPH) method is used, and the wave displacement and pressure are analysed. The intensity of sloshing effects depends not only on the peak ground acceleration but also on the dominant frequency of ground m...

In this article we propose a nonparametric approach for estimating the intensity function of temporal point processes based on kernel estimators. In particular we use asymmetric kernel estimators characterized by the gamma distribution, in order to describe features of observed point patterns adequately. Some characteristics of these estimators are analyzed and discussed both through simulated ...

One of the effective methods for ensuring seismic resistance buildings and structures located in seismic-prone areas is use an active protection system. The most common at present system based on isolation. Seismic isolations form rubber-metal (RMB) pendulum sliding bearings (PSB) have gained great popularity our country abroad. Also known isolation a belt foundation level. Unlike RMB PSB, easi...

In this paper, we suggest a seismic signal measurement system that uses a laser interferometer. The heterodyne laser interferometer is used as a seismometer due to its high accuracy and robustness. Seismic data measured by the laser interferometer is used to analyze crucial earthquake characteristics. To measure P-S time more precisely, the short time Fourier transform and instantaneous frequen...

High-performance simulations at exascale will need to exploit all levels of parallelism offered by modern supercomputing architectures and also need to offer sufficient arithmetic intensity to overcome the well-known memory gap. We will present our current work on optimizing SeisSol, a software package for high-order fully-adaptive seismic simulations, for current petascale supercomputers and m...

past earthquakes have demonstrated that old rc bridges may be seismically vulnerable. bridge responses during the last decades illustrated the necessity of the seismic assessment of bridges especially those which were designed with old codes. in this research an existing concrete bridge representative of the most common bridges in the highway system in iran are studied. push over and nonlinear ...