Material Model

Details of the material input data, used to model each of the components outlined in Table 1, are given in the following:

1.1 Concrete

The coefficients are obtained to give yield stress versus pressure consistent with values given for concrete with fC = 25MPa in the literature (Bangash, M.) and (Winter, G. et al.). In the event of failure, the concrete material is permitted to fail around the reinforcing bar. The specific data for the concrete used in the analysis is listed in the following.