Based on the eccentric loaded simulations of 30 GFRP tube columns filled with reinforced concrete, and comparative analysis with the corresponding experiments, for ultimate load analysis GFRP tube columns filled with reinforced concrete, establish the models of GFRP tube columns filled with reinforced concrete, and prove accuracy of the models.

Different of large volume concrete members strength will result in changes of its bearing capacity, thus affect form removal age of structure. In this paper for the large volume concrete members, calculated the strength of the component through the concept of maturity.