摘要: |
The Kansas DOT is currently using a new saddle-type connection for use in highway overhead sign trusses between the truss and end support columns. Compared with the coupler connections introduced in the early 1970s, the saddle connections are easier to inspect and appear to offer better strength and fatigue performance. However, no quantitative understanding of these saddle connections exists regarding their mechanical performance, including ultimate strength and fatigue susceptibility, compared to the coupler connections. As a result, KDOT does not have a procedure to verify ultimate and fatigue strengths of these details in the design process. This project aims to investigate the ultimate and fatigue strength of the saddle connections though finite element (FE) analysis. |