Bridge Blockage and Overbank Flow Simulations Using HEC–RAS in the Keelung River during the 2001 Nari Typhoon
Publication: Journal of Hydraulic Engineering
Volume 132, Issue 3
Abstract
On September 16, 2001, Typhoon Nari resulted in severe flooding in the Keelung River basin. More than 1,000 shipping containers were swept by the rising water from the floodplain into the river, blocking 14 bridges. A severe overbank flow due to the blockage occurred at the Ba-Tu Railway Bridge. The overbank flow then passed through a railway tunnel and inundated Keelung City, resulting in significant damage. The objective of this study was to determine the influence of the bridge blockage and the Ba-Tu overbank flow on the water stages in the Keelung River during Typhoon Nari. The floating-pier-debris module and the lateral-weir module in the Hydrologic Engineering Center–River Analysis System (HEC-RAS) unsteady-flow routing model were applied to investigate water stage variation due to the bridge blockage and overbank flow. The numerical simulation results provided by this study served as an important reference for authorities who needed to clarify the responsibility of the containers’ owners for the loss of lives and property during this typhoon.
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Acknowledgment
The channel cross-section data and hydrologic records for Typhoon Nari were provided by the 10th River Management Bureau (ROC).
References
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 132 • Issue 3 • March 2006
Pages: 319 - 323
Copyright
© 2006 ASCE.
History
Received: Jul 7, 2004
Accepted: Dec 13, 2004
Published online: Mar 1, 2006
Published in print: Mar 2006
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