抄録
This study is aimed to clarify behavior of ductile crack initiation and propagation in steel bridge piers subjected to random cyclic loading, and to verify an evaluation method of ductile crack initiation using a damage index. Dynamic analyses using fiber model are performed in order to investigate displacement response and damage of steel bridge piers. And cyclic tests are carried out and random displacements are determined based on dynamic analysis. By performing finite element analysis using shell and fiber models, hysteretic plastic strain behavior at the base of specimens is clarified, and the ductile crack initiation is evaluated by the proposed damage index.
