Professor, Graduate School of Engineering, Kobe University. Research interests concentrate on seismic performance and design of concrete structures and concrete-filled tubular structures made of high-strength materials. In particular, by utilizing high-strength steel, tube confinement method, and mild-steel shear panel, the development of new high-performance concrete frames with high resilience but controllable low damage is under progress. Another important field concerns the development of concrete structures utilizing industrial wastes such as fine fly ash.