International Session (Structural Engineering)

[CS2-23] Low Cycle Fatigue Assessment of Joint Structure in Steel Truss Bridges under Earthquake

Chao Jiang¹, 〇Takeshi Hanji¹, Kazuo Tateishi¹, Masaru Shimizu¹ (1.Nagoya University)

Keywords:Low cycle fatigue, Steel truss bridge, Joint structure, Seismic response analysis, Local strain

The failure of joint structure in steel truss bridges can cause the collapse of the whole bridge which has been realized from the accident of the I-35W Mississippi River bridge. Joint structures have been carefully investigated in terms of load-carrying performance against static loads but little research has focused on its dynamic behavior. This study selected a deck truss bridge to confirm the performance and countermeasures against low cycle fatigue at joint structure under huge earthquakes.