فهرس المقالات Pier Shaft حرية الوصول المقاله صفحة الملخص نص كامل 1 - A Comparison of Different Non-linear Numerical Models for Pier Shaft Interaction Analysis for study of the Seismic Performance of Bridges Shahriar TavousiTafreshi Amin Ghafooripour Seyed shahrum Jafari