Paper Title :Analysis of Seismic Capacityand Damage of RC Frames With Reduced Stiffness in Elevation

Author :Nayer A. El-Esnawy, Ahmed G. Fouad

Article Citation :Nayer A. El-Esnawy ,Ahmed G. Fouad , (2016 ) " Analysis of Seismic Capacityand Damage of RC Frames With Reduced Stiffness in Elevation " , International Journal of Advances in Mechanical and Civil Engineering (IJAMCE) , pp. 106-110, Volume-3,Issue-4

Abstract : Structures should have sufficient capacity to resist damage after natural actions such as earthquake events. In this paper, the seismic capacity of typical midrise reinforced concrete moment-resisting frames with reduced stiffness in elevation is evaluated, where the cross-sections of the frame columns are reduced every three stories. The evaluation of the seismic performance is carried by the static pushover analysis, in which the RC MRF is modeled using non-linear properties of the plastic hinges. The main damage states of fully operational, immediate occupancy, life safety, and collapse prevention are identified based on the global capacity of the RC MRFwhich is expressed by its maximum interstory drift ratio. The local capacity of each structural member based on the flexural rotation at locations of the plastic hinges along member length is also identified. The results obtained from the static pushover analysis show that the seismic capacity,damage state, and ductility strength reduction factor of the RC MRF are affected by the reduced stiffness in elevation.Yet, the seismic performance continues to be comparable to the reference RC MRF during several states of damage. Keywords- Seismic Capacity, Reduced Stiffness In Elevation, Pushover Analysis, Damage States, Rc Frames, Strength Reduction

Type : Research paper

Published : Volume-3,Issue-4

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