Development of a New End Treatment for Steel-Backed Timber Guardrail: Phase I Conceptual Design
نویسندگان
چکیده
The purpose of this research is to determine the feasibility of developing a new aesthetic, crashworthy terminal for the steel-backed timber (SBT) guardrail system for use by the National Park Service and others along park roads and scenic highways. Two conceptual designs, a flared non-energy absorbing concept and a parallel energy absorbing concept, were developed using the same materials that are used for the SBT barrier. Component testing was done using a pendulum and the results from the tests were used to calibrate computer models. Computer simulations were then conducted using FE models of the SBT barrier system to evaluate the two end-terminal designs under different impact conditions. The simulations indicated that the two designs would be likely to pass NCHRP Report 350 testing and evaluation criteria at test level 2 (TL-2). Working Paper NCAC 2009-W-006 Oct 2009 Development of a New End Treatment for Steel-Backed Timber Guardrail: Phase I Conceptual Design
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