To evaluate the influence of concrete creep effect on spatial stress in concrete, the formulas for reeursive calculation of equivalent nodal load of creep of PC composite unit under complex stress were derived, and a FE program for calculation of concrete ereep was developed. Then, taking a typical PC continuous beam bridge for example, the regular pattern of the influence of concrete creep on the structure was analysed, the difference of creep calculation modes in different specifications was found, the changing feature and mechanism of girder deflection was found as well. The characteristics...