Author(s)

Simo Fankam Gyldas Dimick

Civil Engineering College of Hubei University of Technology, Wuhan, China.

Steel truss bridges are frequently used in bridge engineering because of their good ability of spanning capacity, construction and light self-weight. Main trusses are the critical component of steel truss bridge and the main truss are made of truss members linked by integral joints. This paper presents the mechanic performance of key joints, and the codified design of joints in steel truss girders according to the latest European norms. The results showed that the fatigue resistance of welded joints evaluation is necessary to predict, detect, and repair the crack in time for the safety service life of the bridge. The stresses of integral joint are greater than that of truss members; the stresses in the center area of the integral joint are greater than the stress at the edge.

Welded Joint, Fatigue Resistance, Finite Element Method, Crack, Stress Intensity Factor, Steel Truss

Dimick, S. (2023) Mechanic Analysis of the Key Node in Steel Truss Bridge. World Journal of Mechanics, 13, 79-92. doi: 10.4236/wjm.2023.133004.