引用第7楼wustone于2010-12-21 10:38发表的 :
xsD($_ AASHTO LFRD <P=twT;P 10.8.3.5.4c Tip Resistance 端阻力
`9BROZnq End-bearing for drilled shafts in rock may be taken as follows:
ye,> A. If the rock below the base of the drilled shaft to a depth of 2.0B is either intact or tightly jointed, i.e., no compressible material or gouge-filled seams, and the depth of the socket is greater than 1.5B (O’Neill and Reese, 1999):
' !eKTC> 如果桩底2B范围岩石是完整或密闭节理的，例如无可压缩材料或断层泥充填薄层，且嵌岩深度大于1.5B：
2I,^YWR .......
B\o Mn 
