Saving Weight by Using Steel Sandwich Bridge Decks

The concept of light-weight steel sandwich elements has been used for example in marine applications. This type of innovative plate structure has a high stiffness to weight ratio and demands modern joining methods.
Todays practice with regards to the deck of all-steel bridges rests to steel-plates with longitudinal trapezoidal stiffeners. These orthotropic decks suffer severely from fatigue damage and high production costs. The steel-sandwich element is a promising replacer of this conventional steel-deck.
Using this type of element in bridge applications will enable a lighter steel structure with a higher utilization of the material. This reduces the CO2 foot-print and eases the on-sight assembly with reduced production cost as a result.
This kind of element has in previous research shown great potential. The aim for this project is investigate that potential and state its structural performance – in order to be an approved structural member of a bridge. That includes displaying its structural behavior when utilized in a bridge application, developing strength design formulations, optimization recommendations, investigations of life-time environmental performance, fatigue evaluations and developing element to element joints

Participants

Mohammad Al-Emrani (contact)

Docent vid Chalmers, Architecture and Civil Engineering, Structural Engineering

Rasoul Atashipour

Doktor vid Chalmers, Architecture and Civil Engineering, Structural Engineering

Peter Nilsson

Doktorand vid Civil and Environmental Engineering

Funding

Swedish Transport Administration

Funding years 2016–2019

Norwegian Public Roads Administration

Funding years 2015–2019

Related Areas of Advance and Infrastructure

Sustainable development

Driving Forces

More information

Latest update

2017-03-08