The earthquake reduction fundamental structure and the earthquake reduction construction method which uses that

摘要

Topic At the same time simply be able to apply low at cost, dominant frequency of earthquake entry motion and the geographical ground which are supposed variously (predominant period) with frequency of vibration of the normal mode of the building (natural period) with vis-a-vis combination to apply, the earthquake reduction fundamental structure which earthquake reduction can do the earthquake motion which it is possible, from ground it is spread inputs effectively and the earthquake reduction construction method which uses that are offered. SolutionsFrom ground the earthquake reduction fundamental structure C which possesses the function which the earthquake motion which it is spread inputs to the building earthquake reduction is done, slide die sandbag layered product S and S which have the sandbag layered product D which, is installed with the foundation A of the building, and the fundamental infrastructure B at least is laminated to the two-layer to top and bottom direction sandbag layered product D, coefficient of friction between sandbag 1,1 of the top and bottom relatively small to slide to horizontal direction they make easy,With, coefficient of friction between sandbag 1,1 of the top and bottom relatively largely to slide to horizontal direction frictional die sandbag layered product F and F which are made difficult,It constituted with due to. Choice figure Drawing 1