Research on an abnormality diagnosis method of the structural behavior of spatial crack systems in concrete dams

Guang Yang, Chongshi Gu, Yihan Zhao, Huaizhi Su, Wen Zhong Shi, Jianhua Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)


Traditional diagnosis methods Wu (2003) [1] of crack structural behavior abnormalities are often directed at one point of concrete dam cracks. Thus, such methods lack scientific and reasonable criteria for crack spatial structural behavior abnormalities and exhibit certain limitations when diagnosing the health state of cracks. In 3D space, crack structural behavior has regional dissimilarity. The current research studied the partitioning methods of spatial crack systems based on the Ward spatial clustering [2–5]. Thereafter, the current study analyzed the causes of crack abnormality from the energy angle, and determined that spatial cracks experienced abnormality because the spatial crack system exhibited irreversible energy exchange with the surroundings. By combining entropy, synergetics, and other theories, the expression of the abnormality energy of the spatial crack systems is built and the energy method criterion of the dam crack spatial structural behavior abnormality is proposed. Instance analysis indicated that results conformed to the physical truth and that the proposed method could accurately diagnose the health status of the spatial crack system.
Original languageEnglish
Pages (from-to)11758-11774
Number of pages17
Issue number24
Publication statusPublished - 1 Dec 2016
Externally publishedYes


  • Abnormality diagnosis
  • Concrete dam crack
  • Entropy
  • Nonlinear system
  • Spatial structural behavior
  • Ward spatial clustering

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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