Shear Behavior of Reinforced Concrete Beam-Column Joints Subjected to Bi-Lateral and Varying, Axial Loads

承受双边和变化轴向载荷的钢筋混凝土梁柱节点的剪切行为

基本信息

  • 批准号:
    10650570
  • 负责人:
  • 金额:
    $ 2.24万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    1998
  • 资助国家:
    日本
  • 起止时间:
    1998 至 1999
  • 项目状态:
    已结题

项目摘要

Two three-dimensional interior beam-column joint subassemblage specimens removed from a reinforced concrete space frame were tested to investigate failure mechanism in a joint panel under bi-lateral and axial loading. The anchorage ability of beam bars within a joint was chosen as a test parameter. Steel plates were placed at the beam critical sections in one specimen to carry directly the anchorage reaction force from beam longitudinal bars to the joint panel concrete. Slabs were not placed in both specimens for simplified path of load transfer. Concrete compressive strength was 23 MPa. Result of the plane beam-column joint specimen tested last year was compared with that of three-dimensional specimens to research on the effect of transverse beams to joint behavior. All specimens failed in joint shear. Following conclusions are drawn from the test.(1) Horizontal load carrying capacity for three-dimensional specimen with beam bar anchorage plates at beam critical sections and cracked t … More ransverse beams was enhanced to 1.1 times that without anchorage plates and 1.3 times that for plane specimen without transverse beams.(2) Joint shear capacity was enhanced by confining action due to anchorage plates against the out-plane expansion of joint core concrete. On the other hand, anchorage plates at beam critical sections caused bond deterioration along beam bars within a joint because development length of beam bars was limitted equally to a column depth by the plate.(3) Transverse beams framing into a joint contributed to enhance joint shear strength by the restriction to both expansion and damage of joint core concrete. Confining force by transverse beams to joint concrete was one fourth approximately of tensile force of longitudinal beam bars in loading direction.(4) The shape of bi-directional interaction in joint shear capacity was regarded as not circle but square under bi-lateral loading in three-dimensional subassemblage specimens. This means that safety to earthquake excitations can be maintained for reinforced concrete beam-column joint in actual frames by designing joints to shear forces in each direction independently. Less
通过对两个钢筋混凝土空间框架内节点试件的三维试验,研究了节点板在双向轴压作用下的破坏机理。试验参数为节点内梁筋的锚固能力。在一个试件中,在梁的临界截面处放置钢板,将梁纵筋的锚固反力直接传递到节点板混凝土上。两个样本中均未放置平板,以简化荷载传递路径。混凝土抗压强度为23 MPa。为了研究横向梁对节点性能的影响,对平面梁柱节点试件的试验结果与三维梁柱节点试件的试验结果进行了对比。所有样本均在联合剪切中失败。通过试验得出以下结论。(1)在梁的临界截面和裂缝处设置梁筋锚固板的三维试件的水平承载力 ...更多信息 横向梁的抗弯强度是无锚固板的1.1倍,是无横向梁的1.3倍。(2)由于锚固板对节点核心混凝土面外膨胀的约束作用,节点抗剪承载力得到提高。另一方面,梁临界截面处的锚固板会导致节点内沿梁筋的沿着粘结劣化,因为梁筋的延伸长度被锚固板限制为等于柱的高度。(3)节点中设置横梁可以有效地抑制节点核心混凝土的膨胀和破坏,从而提高节点的抗剪强度。横梁对节点混凝土的约束力约为加载方向上纵梁钢筋拉力的四分之一。(4)在双向荷载作用下,三维子组合试件中节点抗剪承载力的双向相互作用形状不是圆形而是正方形。这意味着在实际框架中钢筋混凝土梁柱节点可以通过对每个方向的剪力进行独立设计来保持对地震激励的安全性。少

项目成果

期刊论文数量(15)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
北山和宏、横尾一知、小山明男: "兵庫県南部地震で被災した鉄筋コンクリート校舎の耐震性能と地震応答(その1、2)"日本建築学会大会学術講演梗概集. C-2構造IV. 653-656 (1999)
Kazuhiro Kitayama、Kazutomo Yokoo、Akio Koyama:“兵库县南部地震损坏的钢筋混凝土校舍的抗震性能和地震响应(第 1 部分和第 2 部分)”日本建筑学会 C-2 结构会议学术讲座摘要。四。653-656(1999)
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    0
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森田真司、北山和宏ほか: "変動軸力を受ける鉄筋コンクリート外柱・梁接合部のせん断強度" 日本建築学会大会学術講演梗概集. C-2構造IV. 549-550 (1998)
Shinji Morita、Kazuhiro Kitayama 等人:“受可变轴向力作用的钢筋混凝土外部柱梁接头的剪切强度”日本建筑学会会议学术讲座摘要 IV 549-550 (1998)。
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    0
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KITAYAMA Kazuhiro, TAJIMA Yuji, OKUDA Makoto and KISHIDA Shinji: "Influences of Beam and Column Bar Bond on Failure Mechanism in Reinforced Concrete Interior Beam-Column Joints"Transactions of the Japan Concrete Institute. 22. 433-440 (2000)
KITAYAMA Kazuhiro、TAJIMA Yuji、OKUDA Makoto 和 KISHIDA Shinji:“梁柱钢筋粘结对钢筋混凝土内部梁柱接头失效机制的影响”日本混凝土协会学报。
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    0
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KITAYAMA Kazuhiro, TAJIMA Yuji, OKUDA Makoto and KISHIDA Shinji: "Influences of Beam and Column Bar Bond on Failure Mechanism in Reinforced Concrete Interior Beam-Column Joints"Transactions of the Japan Concrete Institute. Vol.22. 433-440 (2000)
KITAYAMA Kazuhiro、TAJIMA Yuji、OKUDA Makoto 和 KISHIDA Shinji:“梁柱钢筋粘结对钢筋混凝土内部梁柱接头失效机制的影响”日本混凝土协会学报。
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    0
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北山和宏,田島祐之,岸田慎司: "鉄筋コンクリート骨組内の接合部破壊と主筋付着性状との関係(その1、2)"日本建築学会大会学術講演梗概集. C-2構造IV. 829-832 (2000)
Kazuhiro Kitayama、Yuyuki Tajima、Shinji Kishida:“钢筋混凝土框架接头失效与主钢筋粘合性能之间的关系(第 1 部分和第 2 部分)”日本建筑学会 C-2 结构 IV 会议学术讲座摘要。 -832(2000)
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KITAYAMA Kazuhiro其他文献

圧着接合されたプレストレスト・コンクリート柱梁接合部がせん断破壊するときの層せん断力について
关于压接预应力混凝土柱梁节点发生剪切破坏时的层剪力
Seismic Behavior of Prestressed Concrete 3D Beam- Column Joints Assembled by PC Tendons
PC筋装配预应力混凝土三维梁柱节点的抗震性能

KITAYAMA Kazuhiro的其他文献

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{{ truncateString('KITAYAMA Kazuhiro', 18)}}的其他基金

Evaluation Method of Restoring Force Characteristics for Precast Prestressed Concrete Frame Assembled by Post-Tensioning Unbonded Tendons
后张法无粘结筋拼装预制预应力混凝土框架恢复力特性评价方法
  • 批准号:
    15K06302
  • 财政年份:
    2015
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Creation of Evaluation Method for Deformation Capacity in Prestressed Concrete Members Focusing on Different Limit States
关注不同极限状态的预应力混凝土构件变形能力评价方法的建立
  • 批准号:
    24560693
  • 财政年份:
    2012
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Creation of Innovative Earthquake Resistant Design for Prestressed Reinforced Concrete Members Based on Bond Condition Control to PC Tendons
基于PC筋粘结条件控制的预应力钢筋混凝土构件创新抗震设计
  • 批准号:
    21560596
  • 财政年份:
    2009
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Seismic Performance of Reinforced Concrete Building Retrofitted by Multi-story Steel Braced Frame Subjected to Tri-lateral Earthquake Excitations
三向地震作用下多层钢支撑框架改造钢筋混凝土建筑的抗震性能
  • 批准号:
    17560515
  • 财政年份:
    2005
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Earthquake Resistant Performance of Reinforced Concrete Building Retrofitted by Multi-Story Steel Braces
多层钢支撑改造钢筋混凝土建筑的抗震性能
  • 批准号:
    13650637
  • 财政年份:
    2001
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Shear Strength of Reinforced Concrete Column Subjected to Varying Axial Load due to Vertical Motion
垂直运动引起的变化轴向荷载作用下钢筋混凝土柱的抗剪强度
  • 批准号:
    08650679
  • 财政年份:
    1996
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
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