Modeling, simulation, and validation of a TB41 crash test of the H2/W5/B concrete vehicle restraint system

Ł. Pachocki,D. Bruski

doi:10.1007/s43452-020-00065-7

Ł. Pachocki, D. Bruski

Open Access

https://doi.org/10.1007/s43452-020-00065-7

Copy DOI

Abstract

The paper addresses numerical simulations of a concrete vehicle restraint system. The model is described in detail. The advanced material law of the continuous surface cap model was used to analyze the damage locations in concrete barrier segments. The results were validated against the TB41 full-scale crash test. The test was conducted in compliance with European standard EN 1317, and the validation was performed in accordance with the PD CEN/TR 16303 technical report. The force and moment envelopes of the road safety barrier during a vehicle crash are provided. The detailed concrete segment model successfully reproduced the characteristic splitting failure cracks that were found near the connection of the adjacent barrier segments in the actual structure after the full-scale crash test.

Highlights

Every year, approximately 1.35 million people die in traffic crashes around the world [1]
The modifications involved shortening the length of each barrier segment and using lightweight concrete. This modified design was evaluated through numerical simulations, and the results showed an improvement in impact severity; the safety system had a tendency to cause vehicle rollover, and the authors suggested that the cross-sectional shape should be studied to address this issue
During the full-scale TB41 crash test, the 10 t vehicle struck the barrier at a distance of 50 cm from connection no. 2 (Fig. 2)

Summary

Introduction

Approximately 1.35 million people die in traffic crashes around the world [1]. As Budzyński et al [2, 3] points out, if used correctly, in justified places, these devices may enhance road safety. This leads to the need for the development of new methods for selecting optimal road restraint systems [4]. To quantify the classes of specific designs, normalized measures must be provided for every barrier used on European roads. This will help to maintain a constant flow of feedback, which will enable the production of continuously improving road safety equipment. In Europe, road safety barriers are tested in compliance with the EN 1317 standard [5, 6]

Objectives

Methods

Results

Conclusion