نوع مقاله : مقاله کامل پژوهشی
نویسندگان
1 گروه سازه، مهندسی عمران و محیط زیست، دانشگاه تربیت مدرس، تهران
2 گروه سازه، دانشکده مهندسی عمران و محیط زیست، دانشگاه تربیت مدرس، تهران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
One of the purposes of this study is to investigate the effect of the FRP use in order to increase the ductility capacity and reduce the ductility demand under dynamic loads. In this order the maximum ductility demand in the circular columns used in the bridges in the cases of use and disuse of FRP under far field earthquake records has been investigated and the effect of this application on the ductility demands has been determined quantitatively. By using the results of this study, the effect of FRP using in increasing the lateral strength of these columns has been investigated quantitatively.
In the following, the columns damages in the cases of use and disuse of this polymers has been investigated quantitatively using an appropriate damage index and the effect of their use in reducing seismic damages has been studied.
Finally, using incremental non-linear dynamic analyses on these columns considering confinement due to the polymers, seismic performance level such as operational, Immediate Occupancy, life safety and Collapse Prevention limit states has been investigated and the effect of using FRP in bridges circular columns on the improvement of their seismic performance has been evaluated.
کلیدواژهها [English]