Title: Reliability analysis in vehicle collision with bridge pier
Abstract:Much work has been done in bridge design specification via a set of structural design standards called Eurocodes to cover the design of all types of structures. We analyse the accidental force on a br...Much work has been done in bridge design specification via a set of structural design standards called Eurocodes to cover the design of all types of structures. We analyse the accidental force on a bridge pier when it is hit by vehicles in order to assess the reliability of a bridge. The force that comes from a vehicle—called vehicle impact force—is not deterministic and it depends on some uncertain parameters, such as the mass of the vehicle and its speed on impact. All the data and uncertainty models for the parameters are given by Eurocode 1. In this paper we analyse the force that is affected by these parameters. For doing that we consider two kinds of problems where in the both problems this force is a function on a distance—the distance between the bridge pier and the side of a road passing under the bridge. One of the problems proposes a design force as a function of the distance—called reliable distance—using a strength condition, the condition on the design forces and the other one suggests a tool for obtaining an economical optimum distance—called cost-optimal distance—by taking into account the optimum economical costs—the cost of bulding and repairing the bridge and human life. In both problems, we consider the safety of the distance where affects dynamic and static design forces and the impact force of vehicle which is not a constant. We show how reliable are Eurocodes by comparing these two distances calculated in two different problems. In other words, through these two problems/criteria we show the danger of using the data represented via Eurocodes for the parameters. In addition, we found linear functions on the distance and the (dynamic and static) design forces of the bridge.Read More
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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