Based on the concept of flexural yield strength factor,this paper proposes a simple method for calculating the ratio of hysteretic energy to input energy(RHEIE) in the tall hybrid structures.

Analysis on seismic behavior of steel-concrete composite frame structure based on hysteretic energy;

An improved pushover analysis method based on hysteretic energy dissipation;

Estimation of hysteretic energy of structures based on equivalent SDOF systems;

Seismic energy response analyses of 11 tall hybrid structures with different periods are carried out using 10 ground motions of different types,in order to get the relationship of the hysteric energy story weight factor to ground motions and system characteristics.

The damage states,bearing capacities,ductility,dissipated energy and stiffness degradation of specimens are compared when the specimens are subjected to cyclic loading.

On the basis of the testing results and the double paramentersdamage model, a modification of dissipated energy factor was made for the modelused in CFST structure, which provided a base for the seismic damage calculation of CFST structures.

This dissertation focused on the Pushover analysis method on the basic of summarizing concerned internal and overseas theory and method, and an evaluation method of seismic capacity of bridge structures is developed based on the adaptive hysteretic energy dissipation spectra-based push-over analysis method, which was validated by some examples.

In order to obtain the ductility coefficient,the relationship between the coefficient and cumulated dissipated hysteretic energy is built according to the experimental results.