Control of Shear Failure of Reinforced Concrte Member Subjected to Combined Load

联合荷载作用下钢筋混凝土构件剪切破坏的控制

基本信息

  • 批准号:
    04650415
  • 负责人:
  • 金额:
    $ 1.41万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
  • 财政年份:
    1992
  • 资助国家:
    日本
  • 起止时间:
    1992 至 1993
  • 项目状态:
    已结题

项目摘要

The ultimate strength and failure modes of reinforced concrete member subjected to combined torsion, bending and shear are investigated by the advanced space truss theory. Then, deformation behavior of members under torsion is estimated by RC plate model. The results of investigation are described as follows in each sections.(1) Ultinate strength and failure modes of reinforced concrete member subjected to combined torsion, bending and shearThe space truss theory as typical method for torsional problems is advanced by superposing torsional, bending and shear force, and fundamental equations are derived. By using an tierative method stress and strain for an arbitrary combination of loads are calculated and checked to failure. Failure modes under torsion and bending are classified as 1)yielding of transverse bars, 2)crushing of diagonal concrete struts, 3)compressive-shear fracture of compressive region and 4)flexural fracture. According to the comparison of calculated values and results of experiments, the proposed method is available to ptedict the ultimate strength and failure mode.(2) Deformation behavior of reinforced concrete member subjected to torsionAt first, effective cross section against torsion is assumed to reinforced concrete plates. Then fundamental equations are derived from equilibrium compatibility conditions considering tensile stress of concrete. Reduction of stiffness in post cracked region is estimated by effective cover of concrete using the proposed index of shear strain at cover. In analysis, an iterative method is used. Calculated values estimate finely whole deformation behavior of rectangular sections and T-shaped sections.
采用先进的空间桁架理论,研究了钢筋混凝土构件在弯、扭、剪共同作用下的极限承载力和破坏模式。然后,采用钢筋混凝土板模型对受扭构件的变形性能进行了分析。调查结果在各章节中描述如下。(1)钢筋混凝土弯扭剪复合受力构件的极限承载力和破坏模式本文提出了以空间桁架理论为代表的扭转问题的计算方法,将扭、弯、剪力叠加,导出了基本方程。用迭代法计算了任意载荷组合下的应力和应变,并进行了破坏校核。在扭转和弯曲下的破坏模式分为1)横向杆的屈服,2)对角混凝土支柱的压碎,3)压缩区域的压剪断裂和4)弯曲断裂。计算结果与试验结果的对比表明,本文提出的方法能够预测混凝土的极限强度和破坏模式。(2)钢筋混凝土受扭构件的变形性能首先对钢筋混凝土板假定了有效抗扭截面。在此基础上,从混凝土的平衡协调条件出发,推导出考虑拉应力的基本方程。采用建议的混凝土保护层剪应变指标,通过混凝土的有效保护层来估算开裂后区域的刚度折减。在分析中,使用迭代方法。计算值较好地反映了矩形截面和T形截面的整体变形特性。

项目成果

期刊论文数量(42)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Kazunori, Shimura: "Ultimate Strength of Reinforced Concrete Members Subjected to Combined Torsion and Bending" JCA Proc.of Cement and Concrete. 46. 732-737 (1992)
Kazunori, Shimura:“受联合扭转和弯曲作用的钢筋混凝土构件的极限强度”JCA Proc.of Cement and Concrete。
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    0
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  • 通讯作者:
原田希樹: "ねじりを受けるT形RC部材の耐力と変形" 土木学会北海道支部論文報告集. 50. 1078-1081 (1994)
Kiki Harada:“受扭转作用的 T 型 RC 构件的屈服强度和变形”日本土木工程学会北海道分会论文报告 50. 1078-1081 (1994)。
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    0
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志村 和紀: "ねじりを受けるRC部材の挙動に及ぼすかぶりの影響" 土木学会北海道支部論文報告集. 49. 959-962 (1993)
Kazunori Shimura:“覆盖物对 RC 构件受扭转行为的影响”日本土木工程师学会北海道分会论文集 49. 959-962 (1993)。
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  • 影响因子:
    0
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佐伯 昇: "ねじりと純曲げの組合わせ荷重を受ける鉄筋コンクリート部材の耐力" 土木学会論文集. 442. 35-42 (1992)
Noboru Saeki:“承受扭转和纯弯曲载荷的钢筋混凝土构件的屈服能力”日本土木工程师学会汇刊 442. 35-42 (1992)。
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  • 影响因子:
    0
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  • 通讯作者:
Kazunori, Shimura: "Influence of Cover Thickness on Torsional Behavior of RC Member" Proc.of Hokkaido Branch of JSCE. 49. 959-962 (1993)
Kazunori, Shimura:“覆盖层厚度对 RC 构件扭转行为的影响”,JSCE 北海道分会论文集。
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    0
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SAEKI Noboru其他文献

SAEKI Noboru的其他文献

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{{ truncateString('SAEKI Noboru', 18)}}的其他基金

Monitoring system for analgesia based on vascular viscoelasticity
基于血管粘弹性的镇痛监测系统
  • 批准号:
    21592012
  • 财政年份:
    2009
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Diagnosis, Preservation and Strengthening System for Concrete Structures in Cold Region
寒地混凝土结构诊断、保存与加固系统
  • 批准号:
    11450167
  • 财政年份:
    1999
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B).
Construction of Concrete Structures on the Moon
月球上混凝土结构的施工
  • 批准号:
    10044110
  • 财政年份:
    1998
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C).
Development of Naturalistic River Improvement with Using High Performance Durable Concrete
高性能耐久性混凝土自然河流治理的发展
  • 批准号:
    07555434
  • 财政年份:
    1995
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Systematic Analytical Model and Design for Torsional and Flexural Strength
扭转和弯曲强度的系统分析模型和设计
  • 批准号:
    06452260
  • 财政年份:
    1994
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
Development for New Performance of Structural Concrete Members by Using Fiber Reinforced Plastics
利用纤维增强塑料开发混凝土结构构件新性能
  • 批准号:
    04555112
  • 财政年份:
    1992
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research (B)
Development of High Performance Concrete in a Ice Sea Environment.
冰海环境下高性能混凝土的开发。
  • 批准号:
    62850086
  • 财政年份:
    1987
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research

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