Publication

Consideration of dynamic traffic action effects on existing bridges at ultimate limit state

Eugen Brühwiler, Andrin Herwig
2008
Conference Papers

Abstract

Dynamic energy due to ultimate limit state relevant traffic scenarios may completely be dissipated by plastic deformations without failure of the bridge element. If the structure shows significant strain hardening behaviour, the maximum static effect is allowed to reach the elastic limit. This paper presents a study of the dynamic action effects on the structural behaviour of “ductile” structural bridge elements showing significant deformations in the postelastic regime. The results allow deriving dynamic amplifications factors valid for the structural safety verification at Ultimate Limit State (ULS), i.e. the dynamic amplification factor may be set to 1.0 if sufficient dissipation capacity in the structural element is identified.

Official source

https://infoscience.epfl.ch/entities/publication/a214e36f-8bd8-400e-9a78-d10b27b37dac

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Eugen Brühwiler, Andrin Herwig
2008
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/a214e36f-8bd8-400e-9a78-d10b27b37dac

About this result

Related concepts (18)

Structural analysis

Structural analysis is a branch of solid mechanics which uses simplified models for solids like bars, beams and shells for engineering decision making. Its main objective is to determine the effect of loads on the physical structures and their components. In contrast to theory of elasticity, the models used in structure analysis are often differential equations in one spatial variable. Structures subject to this type of analysis include all that must withstand loads, such as buildings, bridges, aircraft and ships.

Bridge

A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or railway) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross. There are many different designs of bridges, each serving a particular purpose and applicable to different situations.

Limit state design

Limit State Design (LSD), also known as Load And Resistance Factor Design (LRFD), refers to a design method used in structural engineering. A limit state is a condition of a structure beyond which it no longer fulfills the relevant design criteria. The condition may refer to a degree of loading or other actions on the structure, while the criteria refer to structural integrity, fitness for use, durability or other design requirements.

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