Fundamental Studies on the Earthquake Resistant Design of Bridge Structures

Abstract

This paper describes an outline on the results of fundamental studies on the earthquake resistant design of bridge structures, on which the author has been working since 1948. At first, characteristics of small amplitude vibration of bridge structures are treated theoretically, and at the same time, characteristics of the large amplitude vibration of bridge structures are studied by model tests. Then, from the results obtained above, a fundamental method of computation is derived for the earthquake resistant design. In this case, however, the method of computation may be true only within elastic limits of structural materials and foundation ground. The method of computation for the non-elastic portion is still being studied.