钢筋拼接GFRP管混凝土组合构件的轴压性能试验研究

陈百玲 王连广

陈百玲 王连广. 钢筋拼接GFRP管混凝土组合构件的轴压性能试验研究[J]. 工程力学, 2012, 29(12): 355-359,369. DOI: 10.6052/j.issn.1000-4750.2012.06.0456
引用本文: 陈百玲 王连广. 钢筋拼接GFRP管混凝土组合构件的轴压性能试验研究[J]. 工程力学, 2012, 29(12): 355-359,369. DOI: 10.6052/j.issn.1000-4750.2012.06.0456
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CHEN Bai-ling. EXPERIMENTAL RESEARCH ON THE PERFORMANCE OF SPLICING CONCRETE-FILLED GFRP TUBE COMPOSITE MEMBERS CONNECTED WITH STEEL BARS SUBJECTED TO AXIAL LOADING[J]. Engineering Mechanics, 2012, 29(12): 355-359,369. DOI: 10.6052/j.issn.1000-4750.2012.06.0456
Citation: CHEN Bai-ling. EXPERIMENTAL RESEARCH ON THE PERFORMANCE OF SPLICING CONCRETE-FILLED GFRP TUBE COMPOSITE MEMBERS CONNECTED WITH STEEL BARS SUBJECTED TO AXIAL LOADING[J]. Engineering Mechanics, 2012, 29(12): 355-359,369. DOI: 10.6052/j.issn.1000-4750.2012.06.0456
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钢筋拼接GFRP管混凝土组合构件的轴压性能试验研究

  • (东北大学资源与土木工程学院，辽宁，沈阳 110819)

基金项目: 辽宁省(高校)重点实验室开放基金项目(JG-200918)；辽宁省自然科学基金项目(20052019)
详细信息

  • 中图分类号: TU398; TU312

EXPERIMENTAL RESEARCH ON THE PERFORMANCE OF SPLICING CONCRETE-FILLED GFRP TUBE COMPOSITE MEMBERS CONNECTED WITH STEEL BARS SUBJECTED TO AXIAL LOADING

  • (School of Resources and Civil Engineering, Northeastern University, Shenyang, Liaoning 110819, China)

摘要

    摘要
  • 摘要: 钢筋拼接GFRP管混凝土组合构件是利用在2个独立的GFRP管连接处的内部设置一定长度钢筋笼，再在内部浇注混凝土，而形成的一种新的连续GFRP管混凝土组合构件。近年来，不少国内外研究人员对连续GFRP管混凝土构件的力学性能做了一些研究，而对拼接GFRP管混凝土构件的力学性能研究较少，所以，有必要借助试验，研究其力学性能。该文主要对钢筋拼接GFRP管混凝土组合构件的轴压性能进行了一定的试验研究，试验结果表明，在荷载达到60%Pu(Pu-极限荷载)左右时，GFRP管开始发挥“套箍”作用，拼接试件破坏位置不同于连续试件发生在一定范围内，而是发生在距连接处一定距离，并且，钢筋连接件的箍筋对混凝土起到约束作用。此外，试件破坏时纵筋均屈服，且纵筋对连接处的变形基本没有影响，拼接试件连接处均未破坏，说明采用低含钢率1.96%即可保证拼接GFRP管轴心受压组合构件正常工作。
    Abstract: The splicing concrete-filled GFRP tube composite member connected with steel bars is a new kind of composite member, which is formed by connecting two independent GFRP tubes with a steel bar cage and pouring concrete inside tubes. In recent years, many domestic and overseas researchers have done some research on the mechanical property of the continuous concrete-filled GFRP tube members. But the study on the mechanical property of the splicing concrete-filled GFRP tube members is relatively scarce. Therefore, it is necessary to study the mechanical property of the splicing composite member by experiment. The experimental research on the performance of splicing concrete-filled GFRP tubes composite members connected with steel bars subjected to axial loading was done. And the test results showed that the GFRP tube started to produce the hoop effect when the load reached 60%Pu (Pu-the limit load), and the damage location of the splicing member occurred in some distance from the joint, which was different from that of the continuous member. Besides, the hoop steel bars had binding effect on concrete. At the same time, all the vertical steel bars yielded and had no influence on the deformation of the joint. And the joint of the splicing members did not destroy, this implies that using the low content of the connecting steel bars (1.96%) could guarantee the regular work of the splicing GFRP tube axial-compression composite members.
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    • 参考文献(10)
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出版历程
  • 收稿日期:  2012-06-26
  • 修回日期:  2012-08-30
  • 刊出日期:  2012-12-23

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