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- W2891939033 abstract "Long-span bridges have traditionally employed suspension or cable-stayed forms, comprising vertical pylons and networks of cables supporting a bridge deck. However, the optimality of such forms over very long spans appears never to have been rigorously assessed, and the theoretically optimal form for a given span carrying gravity loading has remained unknown. To address this we here describe a new numerical layout optimization procedure capable of intrinsically modelling the self-weight of the constituent structural elements, and use this to identify the form requiring the minimum volume of material for a given span. The bridge forms identified are complex and differ markedly to traditional suspension and cable-stayed bridge forms. Simplified variants incorporating split pylons are also presented. Although these would still be challenging to construct in practice, a benefit is that they are capable of spanning much greater distances for a given volume of material than traditional suspension and cable-stayed forms employing vertical pylons, particularly when very long spans (e.g. over 2 km) are involved." @default.
- W2891939033 created "2018-09-27" @default.
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- W2891939033 date "2018-09-01" @default.
- W2891939033 modified "2023-09-26" @default.
- W2891939033 title "Theoretically optimal forms for very long-span bridges under gravity loading" @default.
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- W2891939033 doi "https://doi.org/10.1098/rspa.2017.0726" @default.
- W2891939033 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6189590" @default.
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