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dc.contributor.authorCheng, Meng-Hsiungen_US
dc.contributor.authorHuang, Ming-Wanen_US
dc.contributor.authorPan, Yii-Wenen_US
dc.contributor.authorLiao, Jyh-Jongen_US
dc.date.accessioned2017-04-21T06:56:30Z-
dc.date.available2017-04-21T06:56:30Z-
dc.date.issued2016-07-15en_US
dc.identifier.issn0013-7952en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.enggeo.2016.05.014en_US
dc.identifier.urihttp://hdl.handle.net/11536/133877-
dc.description.abstractThe Gangweigou floodway, across the Quiren and Rende districts in Tainan, Taiwan, was designed to bypass partial discharge in the Gangweigou River during heavy rainfall events for the purpose of flood control. This flood way was an excavated open channel supported by single or double rows of precast RC cantilever pile walls on each side of its banks; these piles were installed by the jetting-assisted method. Twenty days after the completion of the floodway, it was put to work for the first time during a heavy rainfall. Unexpectedly, the cantilever pile walls in several sections failed and caused the collapse of the slope behind the walls. This paper explores the failure mechanism and the real causes of failure in this case. Based on the conditions of hydrology and hydraulics, failure processes and the results of stability analyses, it was concluded that ignoring a possible bed incision or bank erosion was likely the primary problem with the improper design. The most critical condition was when the water level in the floodway quickly dropped, which resulted in rapid drawdown. The failure of the case could have been avoided if both the rapid drawdown condition and the potential of the channel bed incision were considered. (C) 2016 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectFloodwayen_US
dc.subjectPrecast cantilever pile wallsen_US
dc.subjectFailure mechanismen_US
dc.subjectSlope stabilityen_US
dc.titleLessons from a failure case of an excavated floodway supported by precast cantilever pile wallsen_US
dc.identifier.doi10.1016/j.enggeo.2016.05.014en_US
dc.identifier.journalENGINEERING GEOLOGYen_US
dc.citation.volume209en_US
dc.citation.spage106en_US
dc.citation.epage118en_US
dc.contributor.department土木工程學系zh_TW
dc.contributor.department環境工程研究所zh_TW
dc.contributor.departmentDepartment of Civil Engineeringen_US
dc.contributor.departmentInstitute of Environmental Engineeringen_US
dc.identifier.wosnumberWOS:000379105800010en_US
Appears in Collections:Articles