Abstract
Since preloaded/prestressed (PL·PS) reinforced soil method had been developed, various researches have been done. These results indicate that preloaded/prestressed reinforced embankments have high stiffness and superior feature on residual settlement against vertical load. But there is no researches on earthquake resistance, which is one of the most important performances, and even no research on horizontal deformation characteristics, which is a basis of earthquake resistance characteristics. Preloaded/prestressed reinforced soil structure must always keep high prestress. If cyclic load is applied to preloaded/prestressed reinforced soil structure in a lateral direction, there is a possibility that all or part of prestress is lost. If all or part of prestress is lost, the structure can not have high stiffness.
As one of studies on earthquake resistance of preloaded/prestressed reinforced soil structures, shaking table tests on retaining wall models are conducted to study the feature of lateral deformation. It was found that preloaded/prestressed reinforced soil structures have superior deformation feature against lateral cyclic load.
