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  • Proposed study and experimental verification for the requalification of steel guard rails for traffic security barriers with high resistance even to severe impact

Abstract

The publishing of this final report marks the end of the Siderservizi-CECA research project aimed at the development of an innovative type steel guardrail to ensure high reliability even in the case of high-energy collisions.
The first stage of the research (Technical Report #1 of the second half of 1989) set out the current state of the art in this field.
The second stage of the research dealt with the design and development of a new type of guardrail, with ten different versions of the basic model adapted to various installation conditions.
The third stage of the research was devoted to the design of the type solutions, leading up to the final design of a maximum strength barrier and a light barrier, followed by a laboratory testing program to evaluate the pre-set breaking device. In the course of this stage a market study was conducted, comparing the main commercial types of steel, concrete or mixed guardrails for use on medians or the sides of viaducts, with the innovative types proposed; the light model barrier was introduced upon conclusion of this survey.
In the fourth stage the previously organized experimental campaign was conducted, followed by final detailed modifications to the system prior to passing on to the full-scale test stage. The laboratory tests showed that the pre-set breaking mechanism functioned in accordance with expectations, and the geometry of the slot was gradually modified to achieve what seemed to correspond best to the desired combined strength/ductility requirements.
The final stage, which will be discussed in detail here, consisted of the crash tests themselves, conducted at the Autostrade S.p.A. test track at Anagni, subsequent modification of certain elements and construction details so as to achieve a prototype corresponding to requirements, and lastly the analysis of the results obtained. ned.

Additional information

Authors: FATTORINI F, Centro sviluppo materiali SpA, Roma (IT);RANZO A, Centro sviluppo materiali SpA, Roma (IT);LA CAMERA F, Centro sviluppo materiali SpA, Roma (IT);TEMUSSI M, Centro sviluppo materiali SpA, Roma (IT);DE MARTINO F, Centro sviluppo materiali SpA, Roma (IT)
Bibliographic Reference: EUR 15797 IT (1996) 162pp., FS, ECU 20
Availability: Available from the (2)
ISBN: ISBN 92-827-6896-1; ISSN
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