利用岩体Hoek-Brown强度准则确定嵌岩桩桩端阻力的探讨

考虑了岩体结构面、岩块单轴抗压强度、应力状态的影响，引入了Ｈｏｅｋ－Ｂｒｏｗｎ岩体经验强度准则，利用极限平衡原理，推导了嵌岩桩桩端阻力的计算公式；并分析了桩端阻力与桩长、嵌岩深度的关系。文中最后指出，尽管桩端阻力在所受荷载中所占比例不大，但是，正确估计桩端阻力对优化嵌岩桩的设计、节约造价仍有重要意义。

Determining the tip resistance of socketed piles with Hoek-Brown criterion

On the basis of Hoek-Brown strength criterion and the limit equilibrium method,a method calculating the tip resistance of socketed piles is put forward.After analyzing the relations between the tip resistance and the length,the socketed depth,the authors point out that:even though the tip resistance carries a small proportion of the total load,it is necessary for us to calculate the tip resistance of socketed piles correctly.