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Title:

BOX-BEAM GUARDRAIL TERMINAL

Accession Number:

00677717

Record Type:

Component

Availability:

Find a library where document is available


Order URL: http://worldcat.org/isbn/0309061024

Abstract:

A crashworthy terminal for box-beam guardrails was developed and successfully crash tested. The terminal incorporated a telescoping tube configuration with a 7-in. x 7-in. x 1/8-in. (178-mm x 178-mm x 3.2-mm) outer tube placed over the standard 6-in. x 6-in. x 3/16-in. (152-mm x 152-mm x 4.8-mm) box-beam rail element. A breakaway post and cable mechanism, similar to that used with the breakaway cable terminal, was used at the end of the terminal to provide anchorage for downstream impacts. An impact head attached to a short segment of a 6-in. x 6-in. x 3/16-in. (152-mm x 152-mm x 4.8-mm) box beam was inserted into the upstream end of the outer tube. The impact head serves to capture impacting vehicles, and the short tubular element slides back into the outer tube to allow the lead wood post to break away. A breakaway tensile connector similar to that used in the ET-2000 terminal was incorporated to transmit tension between the two telescoping tubes without adversely affecting system compression. Pultruded glass/polyester fiber-reinforced plastic tubes were inserted inside the telescoping steel tubes to provide energy dissipation. Full-scale crash testing demonstrated that this telescoping tube terminal for box-beam guardrails met safety standards set forth in NCHRP Report 230.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1468, Recent Research on Roadside Safety Features. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

Monograph Accession #:

01401260

Language:

English

Authors:

Sicking, Dean L
Mak, King K
Wilson, William B

Pagination:

p. 60-67

Publication Date:

1994

Serial:

Transportation Research Record

Issue Number: 1468
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309061024

Features:

Figures (1) ; Photos (12) ; References (11) ; Tables (1)

Uncontrolled Terms:

Safety standards

Old TRIS Terms:

Subject Areas:

Design; Highways; Research; Safety and Human Factors; I85: Safety Devices used in Transport Infrastructure

Files:

TRIS, TRB, ATRI

Created Date:

May 19 1995 12:00AM

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