Publications de Amin Karbassi | EPFL Graph Search

Seismic response of RC buildings subjected to fling-step in the near-fault region

Fling-step and forward directivity are the major consequences of near-fault ground motions as they can impose unexpected seismic demands on structures located in the vicinity of the fault. The pernicious effect of forward directivity on the seismic behavio ...

2020

Evaluation of the seismic retrofitting of an unreinforced masonry building using numerical modeling and ambient vibration measurements

Pierino Lestuzzi, Clotaire Michel, Amin Karbassi

Ambient vibration measurements and 3-D nonlinear time-history numerical modeling are used to assess the retrofitting measures conducted in a 6-story unreinforced masonry building (URM) built in the end of the 19th century in Switzerland. Retrofitting measu ...

2018

Ambient vibration tests and numerical modelling to evaluate seismic retrofitting

Pierino Lestuzzi, Clotaire Michel, Amin Karbassi

2014

Damage prediction for regular reinforced concrete buildings using the decision tree algorithm

Pierino Lestuzzi, Amin Karbassi, Shaliz Rezaee

To overcome the problem of outlier data in the regression analysis for numerical-based damage spectra, the C4.5 decision tree learning algorithm is used to predict damage in reinforced concrete buildings in future earthquake scenarios. Reinforced concrete ...

Elsevier2014

Damage predicting algorithms for regular RC structures

Pierino Lestuzzi, Amin Karbassi

In this paper a 2-phase decision tree algorithm is developed to qualitatively predict damage in RC buildings based on earthquake characteristics and structural properties. To this end, the structural properties considered are the natural period of the fund ...

2013

Fling-step effect on the seismic behavior of high-rise RC buildings during the Christchurch earthquake

Pierino Lestuzzi, Amin Karbassi

Fling-step and forward directivity, which can impose unexpected seismic demands on structures, are the main consequences of near-fault earthquakes. Although the adverse effect of forward directivity on structures behavior is determined to some level, the i ...

2013

Fragility Analysis of Existing Unreinforced Masonry Buildings through a Numerical-based Methodology

Pierino Lestuzzi, Amin Karbassi

As an approach to the problem of seismic vulnerability evaluation of existing buildings using the predicted vulnerability method, numerical models can be applied to define fragility curves of typical buildings which represent building classes. These curves ...

2012

Coupled seismogenic geohazards in Alpine regions

Lyesse Laloui, Pierino Lestuzzi, Alessio Ferrari, Fabrice Dupray, Cyrill Silvan Baumann, Clotaire Michel, Amin Karbassi

COupled seismogenic GEohazards in Alpine Regions (COGEAR) is an interdisciplinary natural hazard project investigating the hazard chain induced by earthquakes. It addresses tectonic processes and the related variability of seismicity in space and time, ear ...

2012

Development and application of damage spectra for RC buildings in Europe

Pierino Lestuzzi, Amin Karbassi

Damage spectra for existing reinforced concrete buildings in Europe are presented in this paper. To this end, a series of time-history nonlinear dynamic analyses for single-degree-of-freedom systems with different deformation ductility values and yielding ...

2012

Development and Application of Damage Spectra to Evaluate the Seismic Performance of Reinforced Concrete Buildings in Greece

Pierino Lestuzzi, Amin Karbassi

Damage spectra for reinforced concrete buildings in Greece are presented in this paper based on a series of time-history nonlinear dynamic analyses for single-degree-of-freedom systems (Clough hysteresis model) with different deformation ductility and yiel ...

2011