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本文将现场标准贯入试验结果与室内三轴振动压缩实验结果相比较,并进行水平地面下饱和砂土简化液化势分析。据此,一方面预测在一定烈度的地震荷载作用下该基础下的砂层发生液化的可能性,另一方面验证《工业与民用建筑抗震设计规范》(TJ11-74)在河滩地带的适用性。此外还利用经验公式进行计算比较,以及估计地下水位变化对抗液化能力的影响。
This article compares the results of field standard penetration test with the results of indoor triaxial vibration compression experiments, and analyzes the simplified liquefaction potential of saturated sand under horizontal ground. Based on this, on the one hand, it predicts the possibility of liquefaction of the sand layer under the influence of a certain intensity of seismic load, and on the other hand, it verifies the applicability of “TJ11-74” code for seismic design of industrial and civil buildings. . In addition, empirical formulae are used to calculate and compare, and the impact of changes in groundwater level on liquefaction capacity is estimated.