• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Quantitative evaluation method for seismic control effects due to the sidewall of embedded foundation

Research Project

Project/Area Number 01550442
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Building structures/materials
Research InstitutionHiroshima University

Principal Investigator

YOSHIDA Ngayuki  Hiroshiama University, Faculty of Engineering Associate Professor, 工学部, 助教授 (30144877)

Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1990: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1989: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsEarthquake / Dynamic interaction / Impedance / Seismic exciting force / Embedded foundation / Backfilled soil / Separation / Sliding / 地盤 / 基礎 / 相互作用 / 境界積分方程式法 / 制震
Research Abstract

The present research developed a new analytical method for the three dimensional dynamic interacion in the frequency domain which can deal with arbitrary shapes of embedded foundation and visco-elastic multi-layered soil by using a 32bit high quality WORK STATION.
The summary of the method is as follows. The outer domain of a soil is analyzed by indirect boundary integral equation method in the thin layered soil model. The inner domain which contains an irregular soft soil is discretized using the axi-symmetric isoparametric finite elements. Combining equations for the total domain are obtained by applying the principle of virtual displacements to the stiffness equation of the outer domain.
The results obtained by numerical analyses are as follows. The rigidly backfilled soil reduces the maximum response of the superstrucure with the relatively short natural period. Convesely the softly backfilled soil is usefull for the structure with the relatively long natural period.
To investigate the effects of the sidewall on the actual responses of the embedded structure to real earthquake, we obtained the observed data of a reinforced concrete tower with acceleration seismographes and soil pressure guages, and globally evaluated the effects of the sidewalls by comparison of the response spectra of the tower with the theoretical results in the frequency range obtained by using a parameter representing the effective degree of soil pressure along the sidewall.

Report

(3 results)
  • 1991 Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] 吉田 長行: "埋戻し土を考慮した円筒剛基礎の動的応答特性" 日本建築学会 構造系論文報告集. 405. 103-113 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 吉田 長行: "結合解法による地盤と基礎の3次元動的相互作用解析" 日本建築学会 構造系論文報告集. 421. 89-99 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Nagayuki Yoshida,: "Dynamic response characteristics of a rigid cylindrical foundation with the backfilled soil" Journal of structural and construction engineering. 405. 103-113 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Nagayuki Yoshida,: "Three-dimensional dynamic interaction analysis of soil and foundation with a hybrid metod" Journal of structural and construction engineering. 421. 89-99 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 吉田 長行: "結合解法による地盤と基礎の3次元動的相互作用解析" 日本建築学会 構造系論文報告集. 421. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 吉田長行: "結合解法による地盤と基礎の3次元動的相互作用解析" 日本建築学会 構造系論文報告集.

    • Related Report
      1989 Annual Research Report

URL: 

Published: 1989-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi