Study on the accumulation process of residual displacement by applying DDA in the Angkor monument, Cambodia

• Published in: Transactions on the built environment Vol. 109; pp. 335 - 345
• Main Authors: YAMADA, S, ARAYA, M, TOYOSHIMA, Y, TACHINO, S, MIYATANI, T
• Format: Conference Proceeding Journal Article
• Language: English
• Published: Southampton WIT 2009; W I T Press
• Subjects: Accumulation; Applied sciences; Building structure; Buildings. Public works; Collapse; Computation methods. Tables. Charts; Computing costs; Construction; Construction (buildings and works); Deformation; Deformation analysis; Deformation mechanisms; Displacement; Dry season; Exact sciences and technology; Finite element method; Inclination; Kinetic friction; Masonry; Masonry construction; Masonry structure; Numerical analysis; Rainy season; Stress analysis; Stress concentration; Stress distribution; Structural analysis. Stresses; Cambodia; Asia; Discontinuous; Numerical analysis; Deformation; International conference; Friction; Buildings; Stone masonry; Building stock; Kinetics; Modeling; Accumulation; Displacement
• ISBN: 9781845641962; 1845641965
• ISSN: 1746-4498; 1743-3509
• DOI: 10.2495/STR090301

In a dry masonry construction, such as the Angkor monument in Cambodia, a residual displacement, which has been accumulated over 1000 years after the construction, is assumed as the essential cause of a tower inclination and collapse. In this paper, applying the discontinuous deformation analysis, DDA, which includes an evaluation of the kinetic friction state after a slide generated between stones in formulization, we conducted a numerical analysis of the Angkor monument focusing on the accumulation process of the residual displacement. Applying DDA, a platform is modeled and the accumulation process of the residual displacement is verified. Then, we verified the relationship between the seasonal accumulation of residual displacement of the platform and the tower inclination, focusing on the phenomenon that the rainy season and the dry season come in the cycle of one year. In addition, to reduce the calculation cost of DDA, we applied a parallel computing to the DDA. Using Microsoft HPC Server 2008 for parallel computing, a numerical analysis of Prasat Suor Prat tower, reflecting the characteristic of masonry construction, was conducted and we compared the displacement and stress distribution calculated by DDA and FEM.