天津地铁双桥静力触探评价土层液化分析研究

Analysis and evaluation of soil liquefaction by double bridge cone penetration test on Tianjin metro

通过对天津地铁在建项目中的14个工点进行双桥静力触探、标准贯入试验和钻探取样综合试验,分析得出了锥尖阻力qc、摩阻比Rf与黏粒含量ρc之间的关系,提出了Rf与ρc的线性关系式,并采用双桥静力触探的方法对既有工点场地液化进行评价。

Through discussing the comprehensive tests of the double bridge cone penetration test, the standard penetration test, and the comprehensive drilling sampling test for 14 workplaces in the Tianjin metro construction project, this paper analyzes the relationship between the resistance qo of the cone point, the friction-resistance ratio R： and the clay content po, and puts forward the R： and po linear relation formula. Meanwhile it evaluates soil liquefaction of the existing workplaces by using the double bridge cone penetration test method.