Article ID Journal Published Year Pages File Type
265698 Engineering Structures 2016 8 Pages PDF
Abstract

•Simulated bus impacting traffic signal pole in 3D finite element analysis.•Simulations of varying thicknesses of pole or height of back-up ring.•Failure occurs at high stress concentration at top height of inner back-up ring.•Failure predicted to occur at point of impact with greater back-up ring height.

A galvanized tapered steel traffic signal pole impacted by a flat-front school bus was found not to break away at the base anchors bolts, but instead fail within the pole tube at a unique height associated with an inner back-up ring component. This failure was simulated with a 3D finite element model. The model was also used to investigate deformation and failure for various front bus shapes, pole thicknesses, and inner back-up ring heights. A higher back-up ring was found to delay failure at the point of impact, but in every case, the traffic signal pole always failed from the bus impact and associated impact load.

Related Topics
Physical Sciences and Engineering Earth and Planetary Sciences Geotechnical Engineering and Engineering Geology
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