Abstract
This paper has studied the evaluation of bearing capacity of concrete piers exposed to the freeze-thaw cycles. In this paper, based on the mechanism of freeze-thaw process, several factors affecting the freeze resistance of concrete were considered, and a regression model including the interaction of loads and freeze-thaw was established according to experimental data. Besides, a wholly new concept - the effective depth of the freeze-thaw has been introduced into the analyzing, and it also considers of the area of cross section reducing, which results in the stress concentration. It calculates the maximal stress by using the limit state design method, and finally judges its rank of damage.
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