00490182

Component

http://onlinepubs.trb.org...trr/1988/1198/1198-010.pdf

https://scholar.google.co...s+Jr&publication_year=1988

This study describes the development and testing of a strong beam guardrail-to-bridge-rail transition. Barrier VII was validated and used to simulate impacts with flexible barriers attached to a rigid barrier. Design curves for selecting transition design parameters of beam strength, post size, and post spacing are presented. The selected design incorporated a tubular W-beam rail element mounted on 7-inch round posts spaced on 3-foot, 1.5-inch centers. The transition was designed to simplify retrofit operations and can be used on bridges that require bridge-end drains. Three full-scale crash tests were conducted to verify the acceptable performance of the transition when attached to either a vertical concrete parapet or a concrete safety-shaped barrier.

This paper appears in Transportation Research Record No. 1198, 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

01413999

p. 105-116

1988

Transportation Research Record

0309047722

Figures (6) ; Photos; References (7) ; Tables (2)

Bridge railings; Crash tests; Crashes; Design; Guardrail transition sections; Guardrails; Performance evaluations; Posts; Retrofitting; Size; Spacing; Strength of materials; Testing

Transition zones; W beams

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

TRIS, TRB, ATRI

Dec 31 1989 12:00AM

• FEDERAL OUTDOOR IMPACT LABORATORY--A NEW FACILITY FOR EVALUATING ROADSIDE SAFETY HARDWARE
• FULL-SCALE VEHICLE CRASH TESTS ON GUARDRAIL-BRIDGERAIL TRANSITION DESIGNS WITH SPECIAL POST SPACING
• FULL-SCALE VEHICLE CRASH TESTS ON NEBRASKA RURAL MAILBOX DESIGNS
• IMPACT ATTENUATORS: A CURRENT ENGINEERING EVALUATION (WITH DISCUSSION)
• OPTIMUM DESIGN OF PIN AND LOOP PORTABLE CONCRETE BARRIER CONNECTORS
• PERFORMANCE EVALUATION OF BREAKAWAY-CABLE-TERMINAL END TREATMENTS
• USE OF GUARDRAILS ON LOW FILL BRIDGE LENGTH CULVERTS
• W-BEAM GUIDERAIL TRANSITION FROM LIGHT TO HEAVY POSTS
• WASHINGTON STATE DEPARTMENT OF TRANSPORTATION DEVELOPMENT OF A BRIDGERAIL RETROFIT PROGRAM