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本文在分析芦苞水闸地基工程地质条件的基础上,参考国家地震局工程力学研究所科研计划处的“芦苞水闸地基液化可能性研究”(以下简称《研究》)成果,采用综合指标、标准贯入击数、抗液化剪切强度与地震剪应力比较等方法综合判别在7度地震时闸基下卧砂层液化问题。本文将给出ALQ_4~1含砾中砂层液化范围及地震时易产生较大变形的淤泥质软弱粘性土层在闸基下分布范围,为闸基抗液化沉陷基础处理提供依据。
Based on the analysis of the engineering geological conditions of the sluice sluice foundation and referring to the research results of “liquefaction potential of slug sluice foundation” (hereinafter referred to as “research”) at the research program of Institute of Engineering Mechanics, State Seismological Bureau, Penetration number, liquefaction shear strength and seismic shear stress and other methods to determine comprehensive comparison of sandstorm liquefaction of sluice foundation at 7-degree earthquake. In this paper, the liquefaction range of ALQ_4 ~ 1 gravel sand layer and the distribution area of muddy weak clay soil prone to large deformation during earthquake are given under the sluice base, which provides the basis for anti-liquefaction and slump foundation treatment.