Tracing developing deterioration zones in a damaged dam by using elastic wave tomography

In this paper, the concrete gravity dam built 40 years ago was partially damaged by the M=7.3 Chi-Chi Earthquake in central Taiwan in 1999. The elastic wave tomography method was applied to identify the safety conditions of the repaired dam in 2010. The resulting velocity profiles showed that the to...

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 615; no. 1; pp. 12077 - 12085
Main Authors Wang, H, Hsieh, S-H, Hu, C-H, Tsai, Y-C
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.10.2019
Subjects
Concrete construction
Concrete dams
Dam construction
Earthquake damage
Elastic waves
Gravity dams
Ground penetrating radar
Inspection
Tomography
Tracing
Velocity distribution
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Summary:In this paper, the concrete gravity dam built 40 years ago was partially damaged by the M=7.3 Chi-Chi Earthquake in central Taiwan in 1999. The elastic wave tomography method was applied to identify the safety conditions of the repaired dam in 2010. The resulting velocity profiles showed that the total structure conditions were accepted as a good to questionable condition. The filled materials and cracks existed in some dam components. Seven years later, the updating tracing investigation revealed that the pervious detrimental zones were spatially extended and associated with time. These testing results were also consistent with the findings from the ground penetrating radar inspection.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/615/1/012077