Bridges

Structural design for the Quickway System

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Abstract

Quickway is a stand-alone traffic system – specifically, a flyover network – for use in overpopulated megacities or smart cities whereby people and small goods are automatically moved with electric cars. The flyover network is represented by a grade separated traffic system made up of single-span beams, which are supported by columns and covered by a multi-functional roof. Current research activities include environmental impact studies and the development of efficient traffic control solutions, modular precast construction and preliminary structural design and construction methods. The flyover network is realized by a grade separated traffic system of single-span beams, subclassified in straight-, curved-, ramp- and merger elements. In general, the construction is chosen to be realized with a modular construction kit out of slender components made of Ultra High Performance Concrete (UHPC), which are assembled with dry joints and external tendons. When it comes to curved elements, however, eccentricities introduce high torsion stressing which require further considerations. This contribution presents the result of preliminary studies on the static behavior of a standard curved element. By using FEM and the consideration of the post cracking behavior of fibre-reinforced UHPC (UHPFRC) a suitable cross section without the need for conventional reinforcement could be designed.

Keywords: flyover constructions, modular construction, smart city traffic system, UHPFRC

How to Cite:

Oppeneder, J., Sparowitz, L., Hadl, P. & Nguyen, V., (2016) “Structural design for the Quickway System”, International Interactive Symposium on Ultra-High Performance Concrete 1(1). doi: https://doi.org/10.21838/uhpc.2016.83