Simulation of Distinct Element Joint Stiffness of the Historical Masonry Structure Model by Micro-Tremor Measurement

Yu Yamashita, Toshiro Maeda

研究成果: Chapter

抄録

Historical masonry structures are generally vulnerable to unsettlement and earthquake ground motion. It is desirable to evaluate their static and dynamic mechanisms by a numerical method to preserve and reinforce them. We studied a reduced-scale corbel arch model of the part of the Bayon temple in Angkor, Cambodia. Two dimensional DEM (Discrete Element Method) was used to simulate the experimental displacement at the top due to the enforced unsettlement. Friction angle and contact parameters estimated in preliminary experiments were adapted in DEM simulation. For the static unsettlement simulation DEM worked well; however, the simulation for the fundamental frequency and the mode shape in micro-tremor simulation with the same parameters depicted the much higher fundamental frequency. We reassessed a friction angle, joint normal and joint shear stiffness and found that the constraint on joint stiffness imposed by the static experiment was not sensitive enough for the dynamic case and search of the parameters in broad extents were necessary. The reevaluated contact parameters for the static experiment were effective for the dynamic experiment as well.

本文言語English
ホスト出版物のタイトルRILEM Bookseries
出版社Springer Netherlands
ページ844-852
ページ数9
DOI
出版ステータスPublished - 2019

出版物シリーズ

名前RILEM Bookseries
18
ISSN(印刷版)2211-0844
ISSN(電子版)2211-0852

ASJC Scopus subject areas

  • 土木構造工学
  • 建築および建設
  • 材料力学

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