Reliability Of Concrete Columns Under
Vehicle Impact
Author(s)
D. Mestrovic, D. Cizmar & L. Miculinic
Abstract
As many actions on bridges are well known and easily determined, problems
arise in the modeling of accidental situations such as the impact of vehicles on a
bridge substructure. European regulation EN 1991-7 provides strategies and
rules for safeguarding buildings and other civil engineering works against
identifiable and unidentifiable accidental actions. This article will focus on
vehicle impact on concrete columns. European regulations recommend minimum
equivalent static design forces due to vehicular impact on members supporting
structures over roadways. The value of this force is dependent only on the type
of road (speed and mass of vehicle) and height of the impact. This kind of
calculation is deterministic and in principle can’t take into account all the
uncertainties that arise prior to and during vehicular impact with a concrete
column. The impact probability, angle of the collision curse, vehicle velocity,
vehicle mass and stiffness (actions on the column), the material and geometrical
properties of the column (resistance of the column) are modeled in a
probabilistic manner and the probability of failure is analyzed. This article will
compare deterministic and probabilistic modeling of vehicle impact. It is
concluded that deterministic modeling of vehicle impact can largely
underestimate actions (forces) on columns during impact.
Keywords: impact force, probabilistic, reliability.
1 Introduction
All actions on structures are, in principal, probabilistic in their nature. However,
we can state that some of the actions are well known and relatively easily
Keywords
impact force, probabilistic, reliability.
Related Book
Other papers in this volume
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