CRITICAL IMPACT POINT FOR LONGITUDINAL BARRIERS

A procedure for identifying critical impact points (CIP) for longitudinal barriers is presented. The procedure is based on computer simulations of longitudinal barrier impacts using the Barrier VII computer program. Critical impact points were selected to maximize wheel snagging and rail tensile loadings. The procedure is based on the finding that the critical impact point is largely dependent on the strength of the posts and the rail bending strength. Thus, the CIP selection procedure relies only on the effective post yield force per unit barrier length and the rail plastic moment. The technique can be applied to all post and beam barriers as well as transitions involving one of these types of barriers. This procedure has been incorporated into the National Cooperative Highway Research Program Report 350.

Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/8674831
Corporate Authors:
American Society of Civil Engineers

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New York, NY United States 10017-2398
Authors:
- Reid, J D
- Sicking, D L
- Bligh, R
Publication Date: 1998-1

Language

English

Media Info

Features: Appendices; Figures; References; Tables;
Pagination: p. 65-72
Serial:
- Journal of Transportation Engineering
- Volume: 124
- Issue Number: 1
- Publisher: American Society of Civil Engineers
- ISSN: 0733-947X
- Serial URL: https://ascelibrary.org/journal/jtepbs

Subject/Index Terms

TRT Terms: Barriers (Roads); Computer programs; Crash tests; Failure; Lateral supports; Posts; Simulation; Stiffness; Strength of materials; Yield strength
Identifier Terms: National Cooperative Highway Research Program
Old TRIS Terms: Critical impact points
Subject Areas: Design; Highways; Research; I20: Design and Planning of Transport Infrastructure;

Filing Info

Accession Number: 00746419
Record Type: Publication
Contract Numbers: SP&R #5238, NSC85-2211-E035-007
Files: TRIS, ATRI
Created Date: Mar 19 1998 12:00AM