Experimental and Analytical Research on Deterioration Diagnosis and Earthquake-resistant Reinforcement of RC Members

钢筋混凝土构件劣化诊断及抗震加固试验与分析研究

• 批准号: 17360218
• 负责人: MIZUNO Eiji
• 金额: $ 7.55万
• 依托单位: CHUBU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360218/
• 关键词: Structural and Earthquake Engineering; Earthquake-resistance Reinforcement; Reinforced Concrete Member; Repair and Reinforcement; Deterioration Diagnosis; Confining Effect; Experiment in Post-peak Range; FEM Analysis

The research items and results from the academic year 2005 are as follows :(1) FEM Analyses on Compressive Failure of Prismatic Concrete with Internal Defect(2) Analytical Research on Post-peak Behavior of RC Members with the Breaking of Hoop Tie(3) An Experimental Study on Flexural Behavior of RC Beam simulating the Deterioration by ASR(4) Research on Earthquake-resistance of RC Members deteriorated by Salt Damage(5) An Experimental Study on Evaluating the Repair Performance of RC Beams failing in FlexureThe influences of internal defects, such as rock-pocket and breaking of hoop tie, on the ultimate strength and post-peak behavior of RC beams have been investigated analytically. Also, Experimental study has been carried out on RC beams simulating the internal defects due to ASR and salt damage. Furthermore, the flexural failure experiment on RC beams has been done to obtain the data, which can be used for damage evaluation of RC members.The research items and results from the academi … More c year 2006 are as follows :(1) 3-D FEM Analyses on Internal State inside the Concrete Filled Steel Tubular Columns subjected to Flexural Deformation under Axial Loading(2) Analytical Study on Confining Condition inside Confining Concrete subjected to Uniaxial Compression(3) A Study on Load Carrying Capacity of RC Column with Internal Defect(4) Research on Load Carrying Capacity of RC Members Deteriorated by Salt Damage3-D finite element deformation analyses on the CFT steel columns, which are subjected to constant axial loading and lateral monotonic loading, have been carried out to investigate the post-peak behavior of the CFT steel columns as well as confining effect on concrete from the steel tubular columns. In similar manner, experimental study has been carried out on RC beams simulating the internal defects due to ASR and salt damage.Summarizing the present research, it can be concluded that the reduction in maximum strength as well as the post-peak behavior of RC member with the internal defects could be related to the reduction in confining effect on core concrete. Therefore, study on the earthquake-resistant reinforcement to increase the confining effect inside RC members may be further target. Less

2005学年的研究内容和成果如下：(1)含内部缺陷棱柱混凝土受压破坏的有限元分析(2)钢筋混凝土环箍断裂构件的峰后行为分析研究(3)钢筋混凝土梁受弯性能模拟ASR退化的试验研究(4)盐害退化钢筋混凝土梁的抗震性能研究(5)钢筋混凝土梁受弯破坏修复性能评价试验研究分析了钢筋混凝土梁内部缺陷对极限强度和峰后行为的影响。此外，还对钢筋混凝土梁进行了模拟ASR和盐损伤的内部缺陷的试验研究。此外，还进行了钢筋混凝土梁的受弯破坏试验，为钢筋混凝土构件的损伤评估提供了数据(1)轴心受弯钢管混凝土柱内部状态的三维有限元分析(2)单轴受压约束混凝土内部约束条件的分析研究(3)含内部缺陷的钢筋混凝土柱承载能力研究(4)受盐害影响的钢筋混凝土构件承载能力研究钢管混凝土柱在轴向恒压和侧向单调荷载作用下的三维有限元变形分析，研究了钢管混凝土柱的峰后性能，以及钢管柱对混凝土的约束效应。通过对钢筋混凝土梁进行了模拟ASR和盐害内部缺陷的试验研究，总结了目前的研究成果，认为存在内部缺陷的钢筋混凝土构件的最大强度降低和峰后行为可能与其对核心混凝土的约束作用减弱有关。因此，进一步研究提高钢筋混凝土构件内部约束效果的抗震配筋可能是进一步的研究目标。较少

项目成果

An Experimental Study on Bending Capacity of RC Beam Deteriorated by Chloride Induced Corrosion

氯化物腐蚀劣化RC梁抗弯性能试验研究

• 发表时间: 2006
• 期刊: Proceedings of the Concrete Structure Scenarios Vol. 6
• 作者: Kobayashi;K.
• 通讯作者: K.

内部欠陥を有する鉄筋コンクリートはりのポストピーク挙動に関する解析的研究

存在内部缺陷的钢筋混凝土梁峰后性能分析研究

• 发表时间: 2006
• 期刊: 平成17年度土木学会中部支部研究発表会講演概要集
• 作者: 亀田好洋;伊藤睦;小林孝一;水野英二
• 通讯作者: 水野英二

An Experimental Study on Ultimate Behavior of R/C Column with Internal Defects

具有内部缺陷的R/C柱极限性能试验研究

• 发表时间: 2005
• 期刊: Proceedings of the Japan Concrete Institute Vol. 27, No. 2
• 作者: Hirasawa;I.;Mizuno;E.;Akiyama;Y.;Ohtake;H.
• 通讯作者: H.

Report of Research Project on Structural Performance of Deteriorated Concrete Structures by JSCE-331 -Review of Experimental Study-

JSCE-331劣化混凝土结构结构性能研究项目报告-实验研究回顾-

• 发表时间: 2006
• 期刊: Proceedings of International Workshop on Life Cycle Management of Coastal Concrete Structures
• 作者: T.Yamamoto;K.Kobayashi
• 通讯作者: K.Kobayashi

Report of Research Project on Structural Performance of Deteriorated Concrete Structures by JSCE-331

JSCE-331 劣化混凝土结构结构性能研究项目报告

• 发表时间: 2006
• 期刊: Proceedings of International Workshop on Life Cycle Management of Coastal Concrete Structures
• 作者: T.Shimomura;Y.Sato;S.Miyazato;S.Saito;T.Yamamoto;A.Kamiharako;K.Kobayashi;M.Akiyama
• 通讯作者: M.Akiyama