Abstract:

The compound foundaiton with short pile and anchor is a new type tower foundaiton that is applied in the rock foundation covered shallow soil layer. Based on a 500 kV transmission linge project, the new type foundaiton was designed, and 6 kinds of numerical simulation model were studied with FLAC3D finite element program for this foundation. The results show that the compound foundaiton with short pile and anchor can meet the load requirements of transmission line tower foundation, the short pier using anchor at bottom can significantly improve the foundation’s uplift bearing capacity, but the improvement of anti-overturning capacity in not obvious. In view of this situation, it can improve the anti-overturning capacity of compound foundation by enlarging the upright diameter and increasing the buried depth depth that is much more effective.