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无粘性土桩端阻力计算公式:
其中:
σef,b
-
桩端有效应力
Nq
承载力系数
Nc
φef
桩端处土体有效内摩擦角
cef
桩端处土体有效粘聚力
qb
桩端阻力(kpa)
Ab
桩端面积
承载力系数 Nq , Nc 由软件自动计算获得,也可由工程师自行输入。
σtot,b
桩端处总应力
cu
桩端处不排水抗剪强度