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STUDY ON SEISMIC DESIGN CRITERIA FOR STEEL FRAMES CONSIDERING DEGRADING LOAD-DEFLECTION CURVES

Research Project

Project/Area Number 06650639
Research Category

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

Allocation TypeSingle-year Grants
Research Field Building structures/materials
Research InstitutionKUMAMOTO UNIVERSITY

Principal Investigator

OGAWA Koji  KUMAMOTO UNIV., FACULTY OF ENG., Professor, 工学部, 教授 (80112390)

Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1995: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1994: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsSteel Frame / Aseismic Design / Seismic Response / Damage Distribution / Damage Concentration / Strength Decay / Deformation Capacity / Energy Absorption Capacity / 重層骨組 / 鋼部材 / 入力エネルギー / 塑性変形 / 強度分布
Research Abstract

The results obtained from this project are summarizes as follows :
1.Based on numerical response analyzes of shear-type lumped mass models with perfect elasto-plastic load-deflection relationships, a basic law that governs distributions of damages is determined as a function of the strength distribution of structures. For a single-degree-of-freedom system, one quarter of the energy input due to ground motions is assumed to be absorbed first by plastic deformation in one direction, and then the rest of the energy is assumed to be distributed during the following reversals of plastic deflections according to the above-mentioned damage distribution law. Thus, the concentration of plastic deformation on one direction is determined in a quantitative manner.
2.The influence of the shape of loas-deflection curves on the seismic response of steel frames is discussed based on the two rules described above. For shear-type models with bi-linear load-deflection relationships, the damage concentratio … More n on weak stories is found to depend on the rigidity ratio between elastic and plastic branch. A formula is derived to evaluate the energy absorption capacity of a single-degree system with tri-linear load-deflection relationship consisting of elastic, hardening, and degrading parts. These results coincide with the results of numerical response analysis.
3.Steel frames with rectangular hollow section columns and wide flange beams under strong ground motions are analyzed numerically. The results show the damage disperses throughout the stories because of the yielding of connection panels. In addition, steel frames are designed according to allowable stress design criteria to see ultimate behavior of the frames. The results show frames tend to be of weak beam type structures.
4.The computer program for non-linear static and dynamic analysis of plane frames is developed to study the damage distribution in steel frames. The generalized plastic hinge method is used for members to incorporate stain hardening effects. The elasto-plastic behavior including bauschinger effect of joint panels are also taken into account. Less

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 井上一朗・小川厚治・多田元英・柳原秀和: "角形鋼管柱ラーメン構造部材の塑性変形応答" 鋼構造年次論文集. 第2巻. 9-16 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小川厚治・多田元英: "柱・梁接合部パネルの変形を考慮した静的・動的応答解析プログラムの開発" 第17回情報・システム・利用・技術論文集. 79-84 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 待鳥賢治・小川厚治・黒羽啓明: "強震を受ける構造物の正負2方向への損傷分配に関する一考察" 日本建築学会九州支部研究報告. 第35号1. 497-500 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 待鳥賢治・小川厚治・黒羽啓明: "第2分枝勾配をもつせん断型多質点系の損傷分布に関する研究" 日本建築学会大会学術講演梗概集. C-1. 233-234 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小川厚治・黒羽啓明・上遠野明夫: "強震をうける重層骨組の損傷分布に関する基礎的考察" 日本建築学会構造系論文集. 第479号. 83-92 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小川厚治・黒羽啓明・待鳥賢治: "強震をうける1自由度系の正負2方向の損傷分布に関する研究" 日本建築学会構造系論文集. 第481号. 117-126 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Kazuo INOUE,Koji OGAWA,Motohide TADA and Hidekazu YANAGIHARA: "Earthquake Response of Member Plastic Deformation of Rigid Frame with RHS Column" Journal of Constructional Steel. Vol.2. 9-16 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Koji OGAWA and Motohide TADA: "Computer Program for Static and Dynamic Analysis of Steel Frames Considering the Deformation of Joint Panel" Proceedings of the 17th Symposium on Computer Technology of Information, Systems and Applications. 79-84 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Kenji MACHIDORI,Koji OGAWA and Yoshiaki KUROBANE: "Damage distributions in two directions in structures under strong ground motion" Annual Meeting of Kyushu Branch of Architectural Institute of Japan. C-1. 497-500 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Kenji MACHIDORI,Koji OGAWA and Yoshiaki KUROBANE: "Damage Distribution for Shear Type Lumped Mass Models with Bilinear Load-Deflection Relationships" Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan. C-1. 233-234 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Koji OGAWA,Yoshiaki KUROBANE and Akio KADONO: "Damage Distribution Law of Multi-Story Frames under Strong Ground Motions" Journal of Structural and Construction Engineering, Transactions of AIJ. No.479. 83-92 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Koji OGAWA,Yoshiaki KUROBANE and Kenji MACHIDORI: "Damage Distribution Law in Two Directions of Single-Degree Systems under Strong Ground Motions" Journal of Structural and Construction Engineering, Transactions of AIJ. No.481. 117-126 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 井上一朗・小川厚治・多田元英・柳原秀和: "角形鋼管柱ラーメン構造部材の塑性変形応答" 鋼構造年次論文集. 第2巻. 9-16 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小川厚治・多田元英: "柱・梁接合部パネルの変形を考慮した静的・動的応答解析プログラムの開発" 第17回情報・システム・利用・技術論文集. 79-84 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 待鳥賢治・小川厚治・黒羽啓明: "強震を受ける構造物の正負2方向への損傷分配に関する一考察" 日本建築学会九州支部研究報告. 第35号1. 497-500 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 待鳥賢治・小川厚治・黒羽啓明: "第2分枝勾配をもつせん断型多質点系の損傷分布に関する研究" 日本建築学会大会学術講演梗概集. C-1. 233-234 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小川厚治・黒羽啓明・上遠野明夫: "強震をうける重層骨組の損傷分布に関する基礎的考察" 日本建築学会構造系論文集. 第479号. 83-92 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小川厚治・黒羽啓明・待鳥賢治: "強震をうける1自由度系の正負2方向の損傷分布に関する研究" 日本建築学会構造系論文集. 第481号. 117-126 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 井上一朗: "角形鋼管柱ラーメン構造部材の塑性変形応答" 鋼構造年次論文集. 第2巻. 9-16 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 小川厚治: "柱・梁接合部パネルの変形を考慮した静的・動的応答解析プログラムの開発" 第17回情報・システム・利用・技術シンポジウム論文集. 79-84 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 待鳥賢治: "強震を受ける構造物の正負2方向への損傷分配に関する一考察" 日本建築学会九州支部研究報告. (1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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