详情

原文传递 MASH Test 3-21 on TL-3 Thrie Beam Transition Without Curb.

题名：	MASH Test 3-21 on TL-3 Thrie Beam Transition Without Curb.
作者：	Arrington, D. R.; Bligh, R. P.; Menges, W. L.
关键词：	Bridge Rails; Concrete Barriers; Crash Tests; End Treatments; Guardrails; Longitudinal Barriers; Manual For Assessing Safety Hardware(mash); Performance Evaluation; Roadside Safety; Terminals; Thrie B
摘要：	This project evaluated the impact performance of a modified TxDOT thrie beam transition to rigid concrete barrier without a curb element below the transition rail. In a previous test described in TxDOT Research Report 0-4564, a thrie beam transition without curb failed to meet NCHRP Report 350 performance criteria. However, it could not be discerned whether the vehicle instability observed in that test was attributable to the missing curb or the rotation of the thrie beam transition rail into the sloped face of the concrete safety shape rail at the bridge end connection point. A transition design without curb would reduce the complexity of the field installations and would provide an option for dealing with different drainage requirements at bridge ends. A fabricated steel blockout was incorporated into the transition system to keep the thrie beam rail and terminal connector in a vertical plane at its connection to the concrete bridge rail. The modified thrie beam transition without curb failed to meet MASH TL-3 requirements due to rollover of the impacting vehicle. Further discussions as to the possible cause of the failure are described within the report.
报告类型：	科技报告