Title: Retrofit of an existing Italian bridge rail for H4a containment level using simulation

Authors: Guido Bonin, Giuseppe Cantisani, Alessandro Ranzo, Giuseppe Loprencipe, Ali O. Atahan

Addresses: Department of Hydraulics, Transportation and Roads, University of Roma 'La Sapienza', Via Eudossiana 18, 00184, Rome, Italy. ' Department of Hydraulics, Transportation and Roads, University of Roma 'La Sapienza', Via Eudossiana 18, 00184, Rome, Italy. ' Department of Hydraulics, Transportation and Roads, University of Roma 'La Sapienza', Via Eudossiana 18, 00184, Rome, Italy. ' Department of Hydraulics, Transportation and Roads, University of Roma 'La Sapienza', Via Eudossiana 18, 00184, Rome, Italy. ' Department of Civil Engineering, Mustafa Kemal University, Iskenderun Campus, 31200, Iskenderun, Turkey

Abstract: This paper describes the methodology for the development of a crashworthy heavy containment bridge rail for the Italian Highway System. The current design was determined to be inadequate for heavy vehicle containment and could not be demolished due to damage risk to bridge superstructure. Italian Highway Agency has decided to retrofit the current design. Two different bridge rail models are developed and analysed using 30 ton heavy vehicle according to European EN1317 Test TB71 requirements. Detailed finite element analyses are performed to evaluate the acceptability of retrofit alternatives. A versatile, highly non-linear and widely accepted finite element program LS-DYNA is used to simulate the crash events. Analysis results show that the final bridge rail model successfully contains and redirects the 30 ton vehicle and it is found to be an acceptable retrofit to existing bridge rail design. A full-scale crash test is recommended to substantiate simulation findings.

Keywords: bridge rail design; heavy vehicles; computer simulation; LS-DYNA; finite element analysis; FEA; crash testing; computational mechanics; Italy; crashworthiness; heavy vehicle containment; bridge retrofitting.

DOI: 10.1504/IJHVS.2009.023864

International Journal of Heavy Vehicle Systems, 2009 Vol.16 No.1/2, pp.258 - 270

Available online: 17 Mar 2009 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article