Abstract
In this paper, a novel three-dimensional approach for the evaluation of the load carrying capacity of masonry arch bridges with arch-backfill interaction is proposed. An adaptive upper bound limit analysis procedure is followed. NURBS solids are adopted for representing the geometry of both arch and backfill, allowing an accurate representation of the structure. These elements are idealized as rigid blocks with energy dissipation occurring only at interfaces, in turn represented by planar or curved NURBS surfaces. An initial mesh is obtained by subdividing the NURBS solids through additional surfaces. Then, a Genetic Algorithm mesh adaptation scheme is applied to reproduce the real collapse mechanism. As numerical example, the analysis of a two-ring skew arch with backfill is reported.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.