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1 前 言 地震期间由于孔隙水压力升高而导致饱和砂土地基和土工构造物的破坏 ,其机理主要有两种 :一种是由于饱和砂土强度降低而引起的完全流动破坏 ,主要表现形式有喷水冒砂、地下轻型结构上浮、地基失效、侧向扩展和流滑等 ;另一种机理称为循环活动性 (ｃｙｃｌｉｃｍｏ?
1 Preface Due to the increase of pore water pressure during the earthquake, the destruction of saturated sand foundation and geotechnical structures mainly has two kinds: one is the complete flow failure caused by the decrease of the strength of saturated sand, and the main manifestation is Water jet sand, floating underground light structure, ground failure, lateral expansion and flow slip, etc .; another mechanism known as cyclic activity (cyclicmo?