The authors gratefully acknowledge the financial support of this work,which was provided by the National Natural Science Foundation of China(Grant Nos.50938008,51108466);the National Science Foundation for Post-doctoral Scientists of China(Grant No.20110491277),the Science Foundation for Post-doctoral Scientists of Central South University.
An isolated structure often possesses distinct non-proportional damping characteristics.However,traditional seismic calculation theory and methods are derived based on the assumption that damping is proportional.Based...