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使用三维结构面网络的模拟手段,通过对不同倾角结构面岩体、不同强度的含结构面岩体和不同桩径情况下大直径嵌岩桩承载性能的分析,结果表明:⑴当嵌入端的岩体含有一组优势的结构面时,嵌岩桩桩体出现非对称的应力集中现象。⑵随着岩体中结构面倾角的增大,嵌岩桩的承载性能呈现出下降的趋势。⑶桩径的变大,含连续倾斜节理岩体强度的降低,都会对嵌岩桩的沉降量的增加有加剧作用。⑷当含有“X”型共轭剪节理系的岩体作为嵌入端时,嵌岩桩的承载性能并没有明显的降低。
Using the simulation method of 3D structural plane network, the analysis of bearing capacity of rock mass with different dip angle, rock mass with different strength and large diameter rock-socketed pile with different pile diameters shows that: (1) When a body contains a set of dominant structural planes, asymmetric stress concentration occurs in the pile of rock-socketed piles. ⑵ With the increase of dip of structural plane in rock mass, the bearing capacity of rock-socketed piles shows a decreasing trend. ⑶ pile diameter becomes larger, with continuous inclined jointed rock mass strength reduction, will increase the settlement of rock-socketed pile has an aggravating effect. (4) The bearing capacity of rock-socketed pile is not obviously reduced when the rock mass containing “X” -type conjugate shear joint system is embedded.