Development of New Guardrail End Treatments

Sicking, Dean L.; Qureshy, Asif B.; Bligh, Roger P.; Ross, Jr., Hayes E.; Buth, C. E.

i

Development of New Guardrail End Treatments

1988-06-01
By Sicking, Dean L. ; Qureshy, Asif B. ; Bligh, Roger P. ; ...

File Language:

English

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Creators:

Sicking, Dean L. ; Qureshy, Asif B. ; Bligh, Roger P. ; Ross, Jr., Hayes E. ; Buth, C. E.
Corporate Creators:

Texas Transportation Institute. Texas A&M University
Corporate Contributors:

Texas State Department of Highways and Public Transportation ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Barriers (Roads) Breakaway Supports Compliance Crashes Crash Tests Guardrails Guardrail Terminals Performance Evaluations Quality Of Work Structural Design Testing
Publication/ Report Number:

FHWA/TX-97/404-1F
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Edition:

Final Report: Sept. 1985 - Aug. 1987
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Abstract:

This report describes the development of two new end treatments for W-beam guardrail. The first design, called the "split rail end treatment," consists of weakened W-beam segments, with slots cut along the length of the rail to reduce the buckling strength of the rail. The end of the rail is flared and anchored with standard "breakaway-cable-terminal" hardware. The split rail design was crash tested and shown to be in compliance with nationally recognized impact performance standards. The second design, called the "guardrail extruder terminal," consists of a device that, when struck, causes the W-beam to be flattened and projected in front of the impacting vehicle and behind the guardrail. Vehicular energy is dissipated in the process, resulting in a uniform, controlled deceleration of the vehicle. The guardrail extruder terminal was crash tested and shown to be in compliance with nationally recognized impact performance standards. Of the two designs, the guardrail extruder terminal offers the greatest improvement in comparison to present guardrail end treatments. It is advantageous in terms of cost, impact performance, and design.
Format:

PDF
Funding:

2-8-86-404
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:abcd3d78cc351048b0c193577da2f6abc5876c2cc3ff04e9c7a8ee30c0f1a6214508d6ae317212bc91a1c4095a03dd5fa358610980db18ed96f9ca782eb545a8
Download URL:

https://rosap.ntl.bts.gov/view/dot/84952/dot_84952_DS1.pdf
File Type:

[PDF - 41.93 MB ]

File Language:

English

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