天津地区灌注桩桩底注浆承载力估算公式研究

Study on bored pile bottom grouting bearing capacity estimation formula in Tianjin region

通过天津地区42个场地钻孔灌注桩桩底注浆的静载荷试桩结果,采用1st Opt曲线拟合软件对实测试桩数据进行拟合并建立回归计算公式,分析了天津地区钻孔灌注桩桩底注浆单桩竖向极限承载力估算值的估算方法和估算公式。

Through static load pile test results of 42 fields bored pile bottom grouting in Tianjin region,the paper applies 1stOpt curve-fitting soft-ware for fitting and establishing regressive calculation formula of actual testing pile data,and analyzes estimation methods and estimation formula of single pile vertical ultimate bearing capacity estimation value bored pile bottom grouting in Tianjin region.