Fatigue Performance Evaluation of Severely Corroded Steel Strands
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Bibliographic Details
| Author(s): |
Yeun Chul Park
(Seoul National University, Seoul, Republic of Korea)
Chul Young Kim (Myongji University, Yong-in-si, Gyung-gi-do, Republic of Korea) Seung-min Yoo (Myongji University, Yong-in-si, Gyung-gi-do, Republic of Korea) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Engineering the Future, Vancouver, Canada, 21-23 September 2017 | ||||
| Published in: | IABSE Symposium Vancouver 2017 | ||||
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| Page(s): | 2030-2034 | ||||
| Total no. of pages: | 5 | ||||
| Year: | 2017 | ||||
| DOI: | 10.2749/vancouver.2017.2030 | ||||
| Abstract: |
Recently, one of the external tendons in Jung-reung-cheon Viaduct in Seoul was failed after 17 years of service due to severe corrosion in strands. As a part of the in-depth investigation, fatigue tests for the corroded strands were conducted to check the structural safety and serviceability of the defected tendons. Nine corroded strand specimens were collected from the replaced tendons. All corroded strands demonstrated very poor fatigue performance. All the specimens could not satisfy the minimum requirement of two million cycles at the stress range of 190 MPa recommended by Eurocode. Section loss in each specimen was measured at the fractured section and found that there is little correlation between section loss and fatigue life. It may be little fatigue life remaining once corrosion occurred in strands. |
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| Keywords: |
fatigue durability corrosion post-tensioning strand external tendon section loss
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