Vibration characteristics and equivalent Young's modulus of the Northern Library and the main tower, Bayon, Cambodia

T. Maeda, T. Yamamoto, Y. Wako, T. Hirai

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

Abstract

We have studied vibration characteristics of the main tower and the sub-towers in the Bayon temple since 2003 and have found that the continuum equivalent Youngs modulus for these tower-like dry-masonry structures is 1/10 to 1/20 of the typical value for the constituent rock blocks. In 2006, we measured microtremors at the Northern Library and the Southern Library in the Bayon temple. They are relatively small structures compared to the towers. Unlike those towers, they look like frame structures composed of columns, beams, and walls made of sandstone. Simulating their predominant frequencies by FEM, we found that the equivalent Youngs modulus was similar to that for the towers and thus concluded that the reduced modulus 1/10 to 1/20 uniformly holds for the different types of dry-masonry structures in the Bayon temple. The Northern Library had been completely restored by 2004 and the Southern Library was to be restored. These libraries have similar predominant frequencies and there must not have been large influence of restoration on the vibration characteristics. The FEM model for the main tower in 2003 was based on photos and figures with speculation of the interior of the tower. In 2006 we had a chance to refer to the three-dimensional topographic data of the exterior and interior of the main tower obtained by laser type equipment. We refined the FEM model and simulated predominant frequencies again to find that the reduced equivalent modulus is still valid.

Original languageEnglish
Title of host publicationStructural Studies, Repairs and Maintenance of Heritage Architecture X
Pages493-503
Number of pages11
DOIs
Publication statusPublished - 2007 Dec 1
Event10th International Conference on Studies, Repairs and Maintenance of Heritage Architecture, STREMAH 2007 - Prague, Czech Republic
Duration: 2007 Jun 42007 Jun 6

Publication series

NameWIT Transactions on the Built Environment
Volume95
ISSN (Print)1743-3509

Conference

Conference10th International Conference on Studies, Repairs and Maintenance of Heritage Architecture, STREMAH 2007
CountryCzech Republic
CityPrague
Period07/6/407/6/6

Keywords

  • Bayon temple
  • FEM modelling
  • Micro-tremor 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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  • Cite this

    Maeda, T., Yamamoto, T., Wako, Y., & Hirai, T. (2007). Vibration characteristics and equivalent Young's modulus of the Northern Library and the main tower, Bayon, Cambodia. In Structural Studies, Repairs and Maintenance of Heritage Architecture X (pp. 493-503). (WIT Transactions on the Built Environment; Vol. 95). https://doi.org/10.2495/STR070461