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Structural health monitoring of a buttress dam using digital image correlation

Abstract

In order to improve the knowledge of the real behaviour of existing structures,structural health monitoring (SHM) is usually carried out. Initial calculations of a buttress dam located in Norway has been carried out to evaluate dam safety against the design loads. From this analysis, it was concluded that most of the pillars do not satisfy the
required sliding safety factor. Despite of this, the dams shows very few signs of damage or damage development. Because of this it was believed that by installing appropriate sensors at critical locations on the dam structure the more informed decisions on future management of the dam could be made, based on the long-term measurements. This paper describes the use of Digital Image Correlation (DIC) technique for displacement monitoring and cracking assessment of a concrete pillar. The SHM monitoring system deployed proved its capability to provide remotely near-real time measurements of displacement, and crack progression.It was shown that the displacements are clearly influenced by the seasonal water level and temperature variations. Despite its extended use in laboratory environment, the current project highlighted the high potential of the DIC method which can readily be deployed for extended use in outdoor environments.
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Category

Academic chapter

Language

English

Author(s)

  • Cosmin Popescu
  • Gabriel Sas
  • Bård Arntsen

Affiliation

  • SINTEF Narvik

Year

2019

Publisher

CRC Press

Book

Sustainable and Safe Dams Around the World: Proceedings of the ICOLD 2019 Symposium, (ICOLD 2019), June 9-14, 2019, Ottawa, Canada

ISBN

9780367334222

Page(s)

1671 - 1680

External resources

View this publication at Norwegian Research Information Repository