Amirkabir University of Technology Amirkabir Journal of Civil Engineering 2588-297X 52 12 2021 02 19 Sensitivity Analysis of Response of a Cable Bridge with Base Isolation to Material Variation under Near Earthquake Sensitivity Analysis of Response of a Cable Bridge with Base Isolation to Material Variation under Near Earthquake 3145 3160 3664 10.22060/ceej.2019.16617.6280 FA Hamidreza Tavakoli Civil Engineering, Babol Noshirvani University of Technology 0000-0001-5298-6199 Majid Moradi Babol Noshirvani University of Technology 0000-0002-8470-6160 Journal Article 2019 06 22 Several factors can influence the response of structures under seismic loading. The specifications of the materials used may differ from the parameters required in the design of structures. This difference can affect the response of structures. In this study, we have tried to investigate the sensitivity analysis of the effects of changing the properties of materials on the seismic response of a suspended cable bridge equipped with RNC isolator. A cable bridge with and without the RNC isolation has been dynamically analyzed after initial modeling under a Sanfernado earthquake record. Then, the effect of random variables on the response of these structures is investigated using Monte Carlo and first order second moment sensitivity methods. Finally, the accuracy of FOSM analysis compared to Monte Carlo method. Two parameters of base shear and maximum deck displacement are considered as structural responses. The results show that among the material characteristics, final strength properties of concrete, reinforcement yield stress and modulus of elasticity of cables have the most influence on the seismic response of these structures. Also, the sensitivity of these parameters in the isolated bridge is lower than that of the non-separated bridge. Several factors can influence the response of structures under seismic loading. The specifications of the materials used may differ from the parameters required in the design of structures. This difference can affect the response of structures. In this study, we have tried to investigate the sensitivity analysis of the effects of changing the properties of materials on the seismic response of a suspended cable bridge equipped with RNC isolator. A cable bridge with and without the RNC isolation has been dynamically analyzed after initial modeling under a Sanfernado earthquake record. Then, the effect of random variables on the response of these structures is investigated using Monte Carlo and first order second moment sensitivity methods. Finally, the accuracy of FOSM analysis compared to Monte Carlo method. Two parameters of base shear and maximum deck displacement are considered as structural responses. The results show that among the material characteristics, final strength properties of concrete, reinforcement yield stress and modulus of elasticity of cables have the most influence on the seismic response of these structures. Also, the sensitivity of these parameters in the isolated bridge is lower than that of the non-separated bridge. https://ceej.aut.ac.ir/article_3664_b67fb3360ae5597d85a005153451dd4e.pdf