The aseismic reliability analysis method of bridge structures by means of response spectrum method is presented based on stationary random vibration theory in this paper

and response variables of response mean and variance are gotten.This method overcomes the disadvantage of being incapable to obtain variable results so as to analyze impossibly the reliability of bridge structures under multi-support excitations.In addition

the simplified method of the correlation coefficients is also proposed which is more convenient to study the reliability of bridge structure.Finally

an example of a rigid bridge structure is showed and some meaning results are gotten

which are also compared between uniform and non-uniform seismic excitations.All analysis methods of above can be employed to study reliability of practical bridge structure subjected to multi-support seismic excitations.