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

Toshiro Maeda, Y. Sugiura, T. Hirai

    Research output: Contribution to journalArticle

    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
    Pages (from-to)255-264
    Number of pages10
    JournalAdvances in Architecture Series
    Volume20
    Publication statusPublished - 2005

    Fingerprint

    Towers
    Sandstone
    Blow molding
    Torsional stress
    Rain
    Deterioration
    Natural frequencies
    Damping
    Elastic moduli
    Stiffness
    Finite element method

    Keywords

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

    ASJC Scopus subject areas

    • Engineering(all)

    Cite this

    Vibration characteristics of the Bayon temple main tower, Angkor, Cambodia. / Maeda, Toshiro; Sugiura, Y.; Hirai, T.

    In: Advances in Architecture Series, Vol. 20, 2005, p. 255-264.

    Research output: Contribution to journalArticle

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