Akademik Veri Yönetim Sistemi
9th US National and 10th Canadian Conference on Earthquake Engineering 2010, Including Papers from the 4th International Tsunami Symposium, Toronto, Kanada, 25 - 29 Temmuz 2010, cilt.3, ss.1845-1854
Deterioration in mechanical properties of concrete, masonry and steel structures are usually observed under repeated cyclic loading in inelastic response range. Therefore such a behavior becomes critical when these structures are subjected to strong ground motions with specific characteristics. The objective of this study is to address the influence of degrading behavior on simple systems. The Structural Performance Database on the PEER web site, which contains the results of cyclic, lateral-load tests of reinforced concrete (RC) columns, is employed to quantify the degradation characteristics of simple systems by calibrating the selected degrading model parameters for unloading stiffness, strength and pinching. Obtained values of the parameters from cyclic test results are compared with the recommended values in literature. It is concluded that the combined effect of degradation parameters on seismic response of single degree of freedom (SDOF) models is evident, and the values of the degradation parameters that are employed in nonlinear seismic analysis should be selected carefully.