Vibration characteristics of the Bayon temple main tower, Angkor, Cambodia

T. Maeda, Y. Sugiura, T. Hirai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Bayon temple, Angkor, built in the late 12th century to the early 13th century, is a masonry temple made of sandstone which has deteriorated possibly due to rain, plants, settlements, and so on. Strong winds blowing more than 20m/sec were observed in the rainy season, which may cause vibration of the structure either directly or via ground motion, we may add wind induced vibration to the list of deterioration causes. Proceeding to a study on the response of the masonry structure to the strong wind, we carried out a micro tremor measurement to evaluate the vibration characteristics of the main tower and surrounding sub-towers in the temple. We identified translational and torsion modes of towers with their predominant frequencies, damping factors, and base-fixed frequencies. We examined all of the sub-towers to find statistically the effects of height and corridor connectivity on their vibration characteristics. Then, we attempted to construct an FEM model for the main tower by simulating the base-fixed natural frequencies of the horizontal translational modes. The model with an elastic modulus practically used for sandstone shows much higher frequencies, which let us decrease the modulus to less than 1/10. We also find that this reduced stiffness model shows about a half the observed vertical translational frequency so as to suggest a lack of consistency with continuum modelling of basically discontinuous masonry structure.

Original languageEnglish
Title of host publicationStructural Studies, Repairs and Maintenance of Heritage Architecture IX
PublisherWITPress
Pages255-264
Number of pages10
ISBN (Print)9781845640217
Publication statusPublished - 2005 Jan 1
Event9th International Conference on Structural Studies, Repairs and Maintenance of Heritage Architecture, STREMAH 2005 - , Malta
Duration: 2005 Jun 222005 Jun 24

Publication series

NameWIT Transactions on the Built Environment
Volume83
ISSN (Print)1743-3509

Conference

Conference9th International Conference on Structural Studies, Repairs and Maintenance of Heritage Architecture, STREMAH 2005
CountryMalta
Period05/6/2205/6/24

Keywords

  • Bayon temple
  • FEM modelling
  • Micro-tremo observation
  • Simulation of elastic modulus
  • Vibration characteristics

ASJC Scopus subject areas

  • Architecture
  • Civil and Structural Engineering
  • Building and Construction
  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Arts and Humanities (miscellaneous)
  • Transportation
  • Safety Research
  • Computer Science Applications

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