3D ANALYSIS OF SETTLEMENT OF COMPOSITE FOUNDATION

A CFG composite foundation was planed, but it is very difficult to be treated in construction due to complicated geologic stratum. Thus, two pile diameters(400 and 800) are adopted to improve the foundation. But theplaned foundation could undergo different settlement of foundation and brings bad influence on building because of different pile diameter. So it is very important to select the appropriate pile spacing. To solve this problem, this paper compares four different pile spacings by 3D settlement analysis of composite foundation, then an optimum plan is put forward.