Minimal-Disturbance Arm Damper (MDAD) has been proposed within the seismic retrofitting scheme of minimaldisturbance to building users. The MDAD is a light-weight and han [...]

The Naturally Buckling Brace (NBB) is a steel brace developed by the writers, which consists of a high-strength and lowyielding steel channel arranged in parallel with an [...]

The present paper proposes an improved design of conventional buckling braces (CBBs) by introducing intentional eccentricity along the brace length. The proposed brace is [...]

The hollow structural section (HSS) columns are commonly used to sustain the seismic loading from any direction in Japanese steel frames due to its uniform geometry along [...]

Many existing structures in seismic vulnerable areas require seismic upgrading to prevent the collapse in case of extreme earthquakes. This paper proposes an approach bas [...]

Probabilistic seismic risk assessment of civil infrastructures has been attracting attention in Japan, especially after recent mega-earthquakes with a long-lasting series [...]