Abstract
In seismic engineering practice it is extremely important to seek confrontation of theoretical analysis with field observations. Japan being one of the countries of high seismic activity and one of the leading countries in seismic investigations, has installed recently reliable seismic observational stations, to obtain a better understanding of this complicated phenomenon, to the benefit of the engineering profession.The basic ideas and assumptions to solve foundation seismic problems play a very important part to achieve more accurate practical solutions when thay are clearly supported by field observations. Since, this is the only way the engineer may develope confidence in the methods of analysis and theories.The aim of the paper is therefore, to compare a theoretical method of analysis developed by the author based on two simple working hypothesis, with the seismic field pore water pressure measurements performed in "Owi Island", Japan. The theoretical analysis was performed with data of the site furnished kindly to the author by Professor Ishihara.The method of analysis is briefly described in the paper and the results compared with field observations. The author found a fair agreement between the results of his analysis with the field observations of the seismic pore water pressures. The author suggest, however, to verify the method proposed over again whenever reliable seismic field observations are available in the future.
