Techno Press
Techno Press

Structural Engineering and Mechanics   Volume 51, Number 1, July10 2014, pages 039-66
Application of topology optimization to bridge girder design
Ryszard Kutylowski and Bartosz Rasiak

Abstract     [Full Text]
    This study deals with the design of bridge girder structures and consists of two parts. In the first part an optimal bridge girder topology is determined using a software based on structure compliance minimization with constraints imposed on the body mass, developed by the authors. In the second part, an original way in which the topology is mapped into a bridge girder structure is shown. Additionally, a method of converting the thickness of the bars obtained using the topology optimization procedure into cross sections is introduced. Moreover, stresses and material consumption for a girder design obtained through topology optimization and a typical truss girder are compared. Concluding, this paper shows that topology optimization is a good tool for obtaining optimal bridge girder designs.
Key Words
    topology optimization; minimum compliance; design of bridge truss girders
Ryszard Kutylowski : Institute of Civil Engineering, Wroclaw University of Technology, Wyb. Wyspiańskiego 27, Poland
Bartosz Rasiak : Alpine Bau GmbH, Polish Branch, Poland

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