Cable Truss Topology Optimization for Prestressed Long-Span Structure

Advances in Civil Engineering and Building Materials IV: Selected and peer reviewed papers from the 2014 4th International Conference on Civil Engineering and Building Materials (CEBM 2014) 2015
Vadims Goremikins, Kārlis Rocēns, Dmitrijs Serdjuks, Leonīds Pakrastiņš, Nikolai Vatin

A suspension bridge is one of the most rational structural solutions for a long-span bridges because it’s main load carrying elements are under tension. But increased deformability, which is conditioned by appearance of the elastic and kinematic displacements, is the main disadvantage of suspension bridges, from other hand. The problem of increased kinematic displacements under the action of non-symmetrical load can be solved by prestressing. The prestressed suspension bridge with the span of 200 m was considered as an object of in-vestigation. The cable truss with the cross web was considered as the main load carrying structures of prestressed suspension bridge. All elements of the cable truss are tensioned. The considered cable truss was optimized by 47 variable factors using Genetic algorithm and FEM pro-gram ANSYS. It was stated, that the maximum total vertical displacements are reduced up to 29.9% by using of the cable truss with the rational characteristics instead of the single cable in case of the worst situated load.

Atslēgas vārdi
Cable truss; Kinematic displacements; Load-carrying elements; Load-carrying structure; Long span structures; Long-span bridge; Structural solutions; Vertical displacements
DOI
10.1201/b18415-83

Goremikins, V., Rocēns, K., Serdjuks, D., Pakrastiņš, L., Vatin, N. Cable Truss Topology Optimization for Prestressed Long-Span Structure. No: Advances in Civil Engineering and Building Materials IV: Selected and peer reviewed papers from the 2014 4th International Conference on Civil Engineering and Building Materials (CEBM 2014), Ķīna, Hong Kong, 15.-16. novembris, 2014. Leiden, The Netherlands: CRC Press/Balkema, 2015, 363.-368.lpp. ISBN 978-1-138-00088-9. e-ISBN 978-1-315-69049-0. Pieejams: doi:10.1201/b18415-83

Publikācijas valoda
English (en)