Evaluation of flood-resistant capacity of scoured bridges

Yung-Yen Ko, Jiunn Shyang Chiou, Yu Ching Tsai, Cheng Hsing Chen, Helsin Wang, Chung Yue Wang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The exposure of pier foundations owing to scour significantly reduces the foundation-bearing capacity and diminishes the flood-resistant capacity of a bridge. This paper proposes a nonlinear quasi-static analysis procedure for the performance of bridges with pile foundations under flow-induced loads for the evaluation on the flood-resistant capacity of scoured bridges. The Winkler beam model is adopted for the modeling of the pile-soil system, and the distributed hinge model is utilized to simulate the possible flexural failure of the piles. Soil springs with nonlinear p-y curves are used to represent the nonlinearity of the supporting soil. To demonstrate this procedure, a case study on the Shuang-Yuan Bridge in Taiwan was performed for various flood and scour conditions. This bridge was partially demolished in a major flood event caused by Typhoon Morakot in 2009. According to the analysis results, a possible scenario for the failure of the Shuang-Yuan Bridge is presented, and the proposed method is shown to give a reasonable assessment of the flood-resistant capacity of bridges with scoured pile foundations.

Original languageEnglish
Pages (from-to)61-75
Number of pages15
JournalJournal of Performance of Constructed Facilities
Volume28
Issue number1
DOIs
Publication statusPublished - 2014 Feb 1

Fingerprint

Pile foundations
Scour
Soils
Piles
Bridge piers
Static analysis
Hinges
Bearing capacity

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Safety, Risk, Reliability and Quality

Cite this

Ko, Yung-Yen ; Chiou, Jiunn Shyang ; Tsai, Yu Ching ; Chen, Cheng Hsing ; Wang, Helsin ; Wang, Chung Yue. / Evaluation of flood-resistant capacity of scoured bridges. In: Journal of Performance of Constructed Facilities. 2014 ; Vol. 28, No. 1. pp. 61-75.
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Evaluation of flood-resistant capacity of scoured bridges. / Ko, Yung-Yen; Chiou, Jiunn Shyang; Tsai, Yu Ching; Chen, Cheng Hsing; Wang, Helsin; Wang, Chung Yue.

In: Journal of Performance of Constructed Facilities, Vol. 28, No. 1, 01.02.2014, p. 61-75.

Research output: Contribution to journalArticle

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