Abstract
This paper describes development of a simulation system for dynamic behavior of liquefaction ground - building by means of substructure pseudo dynamic testing and its verification of accuracy. Soil-element loading test is adapted to the experimental sub-assemblage of the simulation. Soil specimen is made of drying sand. Dynamic system of the soil-building structure is replaced to the Penzien model. From the result of this simulation on the behavior of hysteric-curve, phenomena such as cyclic mobility, soft-spring and so on can be simulated by the soil-element loading test even under random cyclic loading. Dynamic behavior such as lengthening the natural period, increasing the response displacement and decreasing the response acceleration can be simulated after occurrence of liquefaction.