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某工程按7度设防,设计地震场地分组属于第一组,设计基本加速度为0.10g,地下水位深度1.2m;基础埋深2.0m;。试验结果如表2-5,试计算该场地液化指数,并确定液化等级。 表2-5 地质资料 土层 土层名称 层底深度/m 标准贯入试验 黏粒含量 编号 试验点深度/m 标贯实测值N 1 粉土 4.7 1 1.5 8 14.3% 2 3.0 9 3 4.5 9 2 粉砂 10.4 4 6.0 8 2.6% 5 7.5 10 6 9.0 11 3 细砂 14.1 7 11.5 13 1.9% 8 13.0 14
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