Document Type : Original Article
Authors
1
Department of civil engineering, Iran university of science and technology , Tehran,,Iran
2
Associate Professor, Department of Civil Engineering, Iran University of Science and Technology
3
Assistant Professor, Department of Civil Engineering, Parand Branch, Islamic Azad University, Tehran, Iran
10.22065/jsce.2024.412689.3201
Abstract
The most comprehensive analysis methods are non-linear methods that require a lot of calculations. In this research, the endurance time method is used, that is a new dynamic method in which the need for calculations is reduced. In the endurance time method, the structures are subjected to specially designed acceleration functions and their response at different performance levels is estimated by each of the unit response history analyses, thus, significantly reducing the required computational demand. The design of rotational friction dampers in the studied structures was done based on the seismic performance index by endurance time method, and the sliding force of these dampers was uniformly distributed in the structure. The results of this research for two structures of 3 and 9 floors showed that the shear of the base is between 60 and 100%, as expected, considering that the structure was a moment frame at the beginning and had a different target time, and then braces were added to it. Increased. Due to the addition of the damper to the system, taking into account the relative increase in input energy, as expected, the amount of depreciated energy is between 10 and 97%. In relation to the study of drift, the reduction of the values in the floors was high, which was reported from 5 to more than 50% according to the results
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