| U型BFRP箍筋试件受剪试验分析 |
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| 引用本文： | 叶泳,江世永,何让鹏,林峰,袁昕,董宇.U型BFRP箍筋试件受剪试验分析[J].后勤工程学院学报,2012(4):14-18,90. |
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| 作者姓名： | 叶泳 江世永 何让鹏 林峰 袁昕 董宇 |
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| 作者单位： | 后勤工程学院军事建筑工程系;后勤工程学院训练部;总后勤部设计院武汉分院;73146部队 |
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| 基金项目： | 重庆市科技攻关计划重点资助项目(CSTC,2011AB0043) |
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| 摘 要： | 针对U型箍筋抗剪试验缺乏强度折减实践依据的问题,设计15个配有BFRP箍筋的C30混凝土U型试件。在BFRP箍筋两侧用套筒将其锚固,弯折成U型,箍筋两端采用穿心千斤顶施加荷载,逐渐加载至BFRP箍筋破坏。通过分析试验数据,建立试件受力模型,可知弯折部位锚固长度对BFRP箍筋强度折减有较大影响,最大折减为原强度的65%;随着锚固长度的增加,BFRP箍筋强度呈线性增加至某个定值;最后推导出U型BFRP箍筋强度折减公式。
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| 关 键 词： | 混凝土试块 U型箍筋 抗拉强度 试验分析 |
Experimental Study on Shear Test of U-shaped BFRP Stirrup Specimens |
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| YE Yong,JIANG Shi-yong,HE Rang-peng,LIN Feng,YUAN Xin,DONG Yu.Experimental Study on Shear Test of U-shaped BFRP Stirrup Specimens[J].Journal of Logistical Engineering University,2012(4):14-18,90. |
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| Authors: | YE Yong JIANG Shi-yong HE Rang-peng LIN Feng YUAN Xin DONG Yu |
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| Institution: | 1(1.Dept.of Architecture & Civil Engineering,LEU,Chongqing 401311,China;2.Dept.of Training,LEU,Chongqing 401311,China;3.Wuhan Branch of the Design Institute,the General Logistics Department of PLA,Wuhan 430012,China;4.Unit 73146,Fujian 362321,China) |
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| Abstract: | Aiming at the absence of practical basis of strength reduction for the U-shaped stirrup shear experiment,the research has designed 15 U-shaped BFRP stirrup specimens of C30 concrete.The BRFP bar is bent into U-shaped stirrup with both sides of the BFRP stirrup’s sleeve anchor,and is gradually loaded by the jack on both ends of the mandrel to destruction.By analyzing the experimental data,a mechanical model of component is established.What’s more,the strength reduction of the BFRP stirrup is obviously affected by the anchorage length of bent parts,and the ultimate reduction can reach 65%.With the anchorage length increase,BFRP stirrups strength increases linearly to a certain of constant value.Finally,the formula for U-shaped BFRP stirrup strength reduction calculation is deduced. |
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| Keywords: | concrete block U-shaped stirrup tensile strength experimental study |
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