Hybridizing finite element method and genetic algorithms to estimate bridge scour depths

Chung-Wei Feng, Shen-Haw Ju, Hsun Yi Huang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A hybrid model that combines finite element and genetic algorithms is developed to estimate the scour depth around bridge piers by using the natural frequency of the bridge structure. Scouring around bridge piers is an important safety issue of bridge management since it could lead to bridge slanting and collapsing. However, the mechanism of water flow around the pier structure is very complicated, which makes it is very difficult to develop a generic model to determine the scour depth and the bridge safety. Many researchers have tried to estimate the scour depths around bridge piers by simulating the bridge model with various factors, such as the depth of water, average velocity of flow, and diameter of sand. However most of models can only be applied to certain types of bridges under some predefined conditions. In this tusy, the finite element method is used to simulate various conditions by mesh such as pile foundations type, soil strength, and scour depth. Since simulations generate a huge amount of data, which makes it hard to analyze and find the relation between the scour depth and the natural frequency, genetic algorithms are used to find the fitted generic formula that defines the relationship between the scour depth and the natural frequency. In this paper, soil strength compare with natural frequency within different bridge scour depth is discussed.

Original languageEnglish
Title of host publicationProceedings of the IASTED International Conference on Modelling and Simulation, MS 2012
Pages204-208
Number of pages5
DOIs
Publication statusPublished - 2012 Oct 1
EventIASTED International Conference on Modelling and Simulation, MS 2012 - Banff, AB, Canada
Duration: 2012 Jul 32012 Jul 5

Publication series

NameProceedings of the IASTED International Conference on Modelling and Simulation
ISSN (Print)1021-8181

Other

OtherIASTED International Conference on Modelling and Simulation, MS 2012
CountryCanada
CityBanff, AB
Period12-07-0312-07-05

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Software
  • Modelling and Simulation

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  • Cite this

    Feng, C-W., Ju, S-H., & Huang, H. Y. (2012). Hybridizing finite element method and genetic algorithms to estimate bridge scour depths. In Proceedings of the IASTED International Conference on Modelling and Simulation, MS 2012 (pp. 204-208). (Proceedings of the IASTED International Conference on Modelling and Simulation). https://doi.org/10.2316/P.2012.783-045