1989 Fiscal Year Final Research Report Summary
Development of A Program for Inelastic Earthquake Response Analysis of 3-D RC Frame Structures
| Project/Area Number |
63850110
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
コンクリート工学・土木材料・施工
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
IEMURA Hirokazu Kyoto Univ., Civil Eng., Associ. Prof., 工学部, 助教授 (10026362)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUMOTO Takashi KAJIMA Corp., Information System, Engineer, 情報システム部, 課長
IZUNO Kazuyuki Kyoto Univ., Civil Eng., Research Associate, 工学部, 助手 (90168328)
WATANABE Fumio Kyoto Univ., Architech., Associate Professor, 工学部, 助教授 (50026267)
KOBAYASHI Kazuo Osaka Inst. of Tech., Civil Eng., Professor, 工学部, 教授 (10021586)
YAMADA Yoshikazu Kyoto Univ., Civil Eng., Professor, 工学部, 教授 (60025856)
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| Project Period (FY) |
1988 – 1989
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| Keywords | Reinforced Concrete / Frame Structure / Three Dimension / Inelastic Earthquake Response / Axial Force Variation / Computer Program / Hybrid Experiment / Earthquake Damage |
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| Research Abstract |
The first part of this paper introduces the concept of stress-strain based inelastic earthquake response analysis of RC frame structures considering the effects of three dimensional combined stresses. The material non-linearity of RC elements is evaluated by using a fiber model based on hysteretic stress-strain relations. The accuracy of concrete and steel constitutive laws are examined by the comparison of analytical and experimental inelastic moment-curvature relations. Non-linear earthquake structural response is computed by numerical step-by-step solution of the dynamic equation of motion. By the present analytical method, the inelastic seismic behavior of RC tower structures of cable-stayed PC girder bridges can be examined in detail and it was shown that dynamically varying axial forces are an important factor to evaluate the seismic safety of the structure.
The second part of this paper presents an application of substructure-based on-line hybrid tests for computation of inelasti
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c earthquake response of integral structures. The part of a structure expected to behave strongly in nonlinear range is experimentally tested to determine its restoring-force characteristic, while the remaining part of the structure is included in the model analytically. A series of reinforced concrete (R/C) multistory shear building frames were analyzed for earthquake response in which the first story restoring-force characteristics were measured directly from on-line experimental tests. Experimental results show that relatively strong earthquake ground motion induced significant nonlinearity in the first-story sections for these frames with relatively stiff upper stories, which in turn affected the overall response computed for the integral structures.
The results of hybrid experiments on repaired RC members with axial force effects and a summary of the investigation on damage of concrete bridges due to Loma Prieta Earthquake of October 17, 1989 in the U. S. are also included in the report of this study. Less
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Research Products
(16 results)
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[Publications] Yamada, Y., Iemura, H., Matsumoto, T., Ristic, D. and T. Takeda: "Stress-Strain Based Modelling of Inelastic Earthquake Response of RC Frame Structures with Varying Axial Forces" Proceedings of 9th World Conference on Earthquake Engineering, Vol.V, pp.411-416, 1988.
Description
「研究成果報告書概要(欧文)」より
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[Publications] Iemura, H., Yamada, Y., Toki, K., Watanabe, E., Sugiura, K. and W. Tanzo: "Developments in Automated and Hybrid Testing of Structures" Proceedings of the 2nd KAIST-Kyoto University Joint Seminar/Workshop on Civil Engineering, pp.21-32, 1989.
Description
「研究成果報告書概要(欧文)」より
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