一、基础工艺最近的动态日本建设省土木研究所曾于1966～1967年和1976～1977年先后进行了两次有关结构物基础形式选择的调查。从这二次调查资料的比较可看出十年间基础工艺的变化。这两次调查的对象虽只限于桥梁、坝、水闸基础,但也可以认为大致代表了公共土建结构 First, the recent developments in basic technology Civil Engineering Institute of Japan’s Provincial Institute of founding has conducted two surveys on the selection of the basic form of structures in 1966 ~ 1967 and 1976 ~ 1977. From the comparison of the second survey data, we can see the change of basic technology in ten years. Although the targets of these two surveys are limited to bridges, dams and sluices, they can also be regarded as generally representing public civil structures