吴淞江古河道地基土液化的评价

淞江古河道内地基土由饱和、呈松散—稍密状态亚砂土夹轻亚粘土、粉细砂等组成,各工点组成的地基土类型、反映在地震烈度7°时极易产生液化。产生严重液化深度主要在埋深3～10米,埋深10米以下往往仅具轻微液化。故于古河道内拟建建筑物,应重视地基土的液化判别工作,以利于地基土的处理。

EVALUATION OF THE LIQUEFACTION ANCIENT STREAM CHANNEL OF THE FOUNDATION SOIL OF THE WU-SONG RIVER

The foundation soil of the ancient stream channel consists of a loose-slightly dense,saturated sandy silt interstratified with clayey silt and silty-fine sand,etc.when earthquakeintensity reaches seven degrees,the classification of the foundation soil at each work-point leads to liquefaction very easily.The depth at which serious liquefaction occurs ismainly within 3-10 meters deep.Below the depth of 10 meters,there is only slightliquefaction.Hence,when a building is to be built above the ancient stream channel,attention must be paid to liquefaction distinction of the foundation soil,so as to bebenificial to thetreatment of foundation soil.