Review and prospects of the research on multi-components earthquake excitation for structures (I): seismic inputs

The state-of-the-art of research on multi-components earthquake excitation to structures is summarized in this paper. In part I, the aspects for multi-components seismic input are discussed, which are mainly related to the research on rotational component of ground motion, random model and correlation of multiple seismic ground motions. In part n , the analysis methods for multi-components seismic excitation to structures are reviewed, which consist of the seismic response spectrum method, the time-history analysis method, and the random vibration method. Finally, the problems and prospects of the research are discussed, and the aspects for further research are recommended.