The corrosion mechanisms of the turbulent erosion and galvanic couple corrosion which led to the failure of the air coolers were studied through the micro and macro analysis of the corrosion status, based upon the macro phenomenon of the failure and in consideration of the corrosion environment.

In this paper,three-dimensional non-linear finite element program is used to analyze the character of load-bearing of pile group due to current scour.

According to recent results from the domestic and international research,this paper firstly analyzed influences of current scour on working behavior of pile groups under vertical loadings, and put forward some opinions and suggestions to engineering design.