根入れがある直接基礎のSRC建物の建物性能曲線による地盤の地盤剛性評価

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  • 李 立岗
    名古屋大学大学院環境学研究科 博士後期課程
  • 中村 聡宏
    名古屋大学大学院環境学研究科 助教・博士（工学）
  • 鹿嶋 俊英
    独立行政法人建築研究所 主任研究員・博士（工学）
  • 勅使川原 正臣
    名古屋大学大学院環境学研究科 教授・工博 （独立行政法人建築研究所客員研究員）

書誌事項

タイトル別名
  • EVALUATION OF SOIL STIFFNESS USING PERFORMANCE CURVES OF AN EIGHT-STORY STEEL-REINFORCED CONCRETE BUILDING WITH EMBEDDED SPREAD FOUNDATION

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 In this paper, a simple evaluation method of soil stiffness is presented based on the Ra – Rd curve (which reflects the relationship between the rotation angle and the rotation moment of the foundation). Earthquake response records were used to obtain Ra – Rd curves. This study analyzed the Ra – Rd curves of the researched Steel-Reinforced Concrete (SRC) building (with an embedment spread foundation) for seven strong earthquakes that occurred in Japan between 1998 and 2012. And the real measurements of rocking stiffness of the soil were calculated using maximum peak response points of the Ra – Rd curves. The results demonstrated that for the researched SRC building under the condition of strong earthquakes, the calculation method of response and limit strength (published by the Architecture Institute of Japan) underestimated the rocking stiffness of the soil; and the method using vertical ground reaction force coefficient kv estimated in the JARA (Japan Road Association) standard cannot reflect the real measurements of the rocking stiffness of the soil.

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