Abstract：
In the paper, based on the granite residual soil in the west of Guangdong , the distribution of granite residual soil and weathered globular body were studied, as well as the monadnock of bare granite residual soil zone building foundation case. In the case, the special schemes of bored pile foundation, the natural foundation and artificial digging pile foundation were analyzed when facing the spherical weathering granite. The results showed that it is better to use the natural foundation in this situation where has monadnock of bare granite residual soil zone construction. It can excavate the weathered globular body, if we use artificial digging hole pile foundation in the pile foundation. Meanwhile, there is the advantage of larger spherical weathering as bearing layer of pile tip. It is safe and economical to avoid or using spherical weathering granite body.
