A Comparative Study on the Equivalent Load Method and the Initial Stress Method for Modeling of the Prestressing Tendon

프리스트레싱 텐던의 모델링을 위한 등가하중법과 초기응력법의 비교연구

In finite element analysis of the PSC structures, the prestressing effect can be introduced by two ways, i.e, equivalent loads or initial stress. This study investigates the reason why the two schemes that adopt the different approaches produce the similar results. The discussion is applicable to the general finite elements that correspond to the concrete and tendons. Some of the detailed derivations of each scheme are presented. Numerical examples show the identical results for the two methods.