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Title:

Development, Crash Testing, and Evaluation of Steel-Post Trailing-End Guardrail Anchorage System

Accession Number:

01763700

Record Type:

Component

Availability:

Find a library where document is available


Order URL: http://worldcat.org/issn/03611981

Abstract:

Trailing-end guardrail anchorage systems are widely used by most state departments of transportation (DOTs) and generally consist of simple adaptations of crashworthy end terminals. The safety performance and structural capacity of these trailing-end anchorage systems, when reverse-direction impacts occur near the end, is imperative in crashworthiness of guardrail systems. In 2013, a non-proprietary trailing-end anchorage system with a modified breakaway cable terminal (BCT) was developed by the Midwest Roadside Safety Facility (MwRSF) for the Midwest Guardrail System (MGS). Although this trailing-end guardrail anchorage system adequately met the Manual for Assessing Safety Hardware (MASH) TL-3 safety requirements, the use of two breakaway wood posts was deemed by some users to have several drawbacks. Thus, there was a critical need to develop a non-wood option to anchor the downstream end of the W-beam guardrail system, which led to the need to develop a steel-post trailing-end guardrail anchorage system for use with the MGS. Following the design and component testing of such a system, two full-scale crash tests were performed according to the MASH 2016 test designation nos. 3-37a and 3-37b. In the first test, a 2270P pickup truck struck the guardrail system and was adequately contained and redirected. In the second test, an 1100C small car struck the barrier and safely gated through the barrier. Both tests were deemed acceptable according to TL-3 safety criteria in MASH 2016. Recommendations are provided for the installation of a steel-post trailing-end guardrail anchorage system when used in combination with MGS.

Supplemental Notes:

Mojdeh Asadollahi Pajouh https://orcid.org/0000-0003-3938-0672 © National Academy of Sciences: Transportation Research Board 2021.

Report/Paper Numbers:

TRBAM-21-04171

Language:

English

Authors:

Asadollahi Pajouh, Mojdeh

ORCID 0000-0003-3938-0672

Lechtenberg, Karla A

ORCID 0000-0003-4701-8649

Faller, Ronald

ORCID 0000-0001-7660-1572

Yosef, Tewodros

Pagination:

pp 952-966

Publication Date:

2021-12

Serial:

Transportation Research Record: Journal of the Transportation Research Board

Volume: 2675
Issue Number: 12
Publisher: Sage Publications, Incorporated
ISSN: 0361-1981
EISSN: 2169-4052
Serial URL: http://journals.sagepub.com/home/trr

Media Type:

Digital/other

Features:

Figures; Photos; References (13) ; Tables

Subject Areas:

Design; Highways; Safety and Human Factors

Files:

TRIS, TRB, ATRI

Created Date:

Dec 23 2020 11:09AM