Semnan University Press Journal of Transportation Infrastructure Engineering 2423-5350 5 3 2019 10 23 Experimental Research on The Damage Indices of Reinforced Concrete Beam-Column Connections of Rail Bridges With High-Strength Reinforcements Subjected to Cyclic Loading Experimental Research on The Damage Indices of Reinforced Concrete Beam-Column Connections of Rail Bridges With High-Strength Reinforcements Subjected to Cyclic Loading 51 70 3890 10.22075/jtie.2019.16918.1361 FA Hamed Arshadi Ph.D. Candidate of Structural Engineering, Faculty of Civil Engineering, Semnan University, Semnan, I. R. Iran. Hosein Naderpour Associate Professor, Faculty of Civil Engineering, Semnan University Journal Article 2019 01 06 Nowadays, because of the economical considerations, the application of the high-strength materials has been taken into serious considerations by several researchers. High-strength reinforcement application has many benefits like: decreasing material consumption, project time and peripheral costs. However, due to some of their repercussions such as: decreasing the overall ductility, energy absorption and increasing crack widths, their applications are limited in seismic prone areas. In this research, the effect of high-strength reinforcements on the different types of damage indices in the beam-column connections of rail bridges (designed based on the special seismic instructions) are studied experimentally under cyclic loading. Experimental results show that the application of high-strength reinforcements expedites the failure process of the specimens. Moreover, the results show that the energy absorption of the specimens decreases by using high-strength reinforcements either. However, the effects of high-strength reinforcements as stirrups has less repercussions than the case of using them as longitudinal reinforcements. Nowadays, because of the economical considerations, the application of the high-strength materials has been taken into serious considerations by several researchers. High-strength reinforcement application has many benefits like: decreasing material consumption, project time and peripheral costs. However, due to some of their repercussions such as: decreasing the overall ductility, energy absorption and increasing crack widths, their applications are limited in seismic prone areas. In this research, the effect of high-strength reinforcements on the different types of damage indices in the beam-column connections of rail bridges (designed based on the special seismic instructions) are studied experimentally under cyclic loading. Experimental results show that the application of high-strength reinforcements expedites the failure process of the specimens. Moreover, the results show that the energy absorption of the specimens decreases by using high-strength reinforcements either. However, the effects of high-strength reinforcements as stirrups has less repercussions than the case of using them as longitudinal reinforcements. https://jtie.semnan.ac.ir/article_3890_a1227a501de0f8ea000235327f6b7449.pdf