Abstract
A caisson type foundation is generally used for power hansmission towers in mountainous areas. The leg of the tower, which is a steel pipe with ribs is embedded in the cylindrical concrete body as an anchor. Some experiments have been conducted by pulling the anchor for analyzing the failure mode and ultimate capacity. In this paper, experiments are carried out by choosing diameter, anchor length and concrete strength as test parameters. Tharefore, two dimensional plane stress finite element analysis considering splitting cracks based on fracture mechanics is carried out in order to investigate fracture mechanism.
