GRC网格与聚丙烯纤维混凝土复合加固混凝土圆柱轴压性能试验研究
引用文献：
陈思程 黄海林 言兴 朱德举. GRC网格与聚丙烯纤维混凝土复合加固混凝土圆柱轴压性能试验研究[J]. 建筑结构，2022，48（18）：119-127.
CHEN Sicheng HUANG Hailin YAN Xing ZHU Deju. Experimental study on axial compression performance of concrete circular columns reinforced with GRC mesh and polypropylene fiber reinforced concrete[J]. Building Structure，2022,48（18）：119-127.
摘要：完成了24根GRC网格与聚丙烯纤维混凝土复合加固混凝土圆柱试件的轴压性能试验，研究了不同加固层混凝土中聚丙烯纤维含量、GRC网格包裹位置及包裹方式等参数对试件抗压性能的影响规律，得到了其破坏形态、荷载-应变曲线、荷载-位移曲线及极限荷载。结果表明：试件破坏形态主要为中部压溃和斜剪破坏，大部分试件加固层混凝土最终剥离；GRC网格全包试件较间隔包裹试件表现出更高的抗压性能；GRC网格外包在加固层混凝土表面的试件抗压性能优于内包在核心柱混凝土表面的试件；掺入聚丙烯纤维可小幅度增强试件抗压性能；GRC网格和聚丙烯纤维均能显著提升试件的延性。提出了GRC网格与聚丙烯纤维复合加固混凝土圆柱的正截面轴压承载力计算方法，经对比，计算值略小于试验值。
关键词：GRC网格；聚丙烯纤维混凝土；复合加固；破坏机理；轴压性能；轴压承载力
基金：湖南省教育厅优秀青年项目(19B188)；湖南省自然科学基金青年基金项目(2018JJ3161)；湖南省研究生科研创新项目(CX20190802)。
尊敬的用户，本篇文章需要2元，点击支付交费后阅读
限时优惠福利：领取VIP会员
全年期刊、会议视频
全部免费！培训视频打折！
全年期刊、会议视频
全部免费！培训视频打折！
参考文献[1] PARGHI A,ALAM M S.Seismic collapse assessment of non-seismically designed circular RC bridge piers retrofitted with FRP composites[J].Composite Structures,2016,160:901-916.
[2] 寇佳亮，席方勇，赵坤龙.卤水-干湿循环侵蚀下高延性混凝土力学性能试验研究[J].建筑结构，2019,49(8):98-102.
[3] 魏洋，纪军，张敏.FRP网格拉伸性能及加固水下混凝土试验研究[J].玻璃钢/复合材料，2014(7):10-15.
[4] 王海良，郭海洋，杨新磊，等.玄武岩纤维防水混凝土力学性能试验研究[J].建筑结构，2013,43(S1):1467-1470.
[5] 张勤，李三亚，赵永胜，等.纤维网增强混凝土复合材料约束混凝土应力-应变关系研究[J].建筑结构学报，2021,42(4):166-176.
[6] 尹世平，彭驰，艾珊霞.纤维编织网增强混凝土加固混凝土柱轴压性能的研究[J].四川大学学报(工程科学版),2016,48(4):85-92.
[7] 潘毅，吴晓飞，郭瑞，等.长期荷载作用下FRP约束混凝土应力-应变关系分析模型[J].建筑结构学报，2017,38(10):139-148.
[8] AL GEMEEL A N,YAN Z G.Using textile reinforced engineered cementitious composite for concrete columns confinement[J].Composite Structures,2019,210:695-706.
[9] AL GEMEEL A N,YAN Z G.Experimental investigation of textile reinforced engineered cementitious composite (ECC)for square concrete column confinement[J].Construction and Building Materials,2018,174:594-602.
[10] KHALOO A,MORADI H,KAZEMIAN A,et al.Experimental investigation on the behavior of RC Arches strengthened by GFRP composites[J].Construction and Building Materials,2019,235(C):117519.
[11] BOURNAS D A,LONTOU P V,PAPANICOLAOU C G,et al.Textile-reinforced mortar versus fiber-reinforced polymer confinement in reinforced concrete columns[J].ACI Structural Journal,2007,104(6):740-748.
[12] BENZAID R,CHIKH N E,MESBAH H.Study of the compressive behavior of short concrete columns confined by fiber reinforced composite[J].Arabian Journal Forence & Engineering,2009,34(1B):15-26.
[13] YIN S P,PENG C,JIN Z Y.Research on mechanical properties of axial-compressive concrete columns strengthened with TRC under a conventional and chloride wet-dry cycle environment[J].Journal of Composites for Construction,2017,21(1):04016061.1-04016061.11.
[14] 言兴.GRC网格布与聚丙烯砼复合加固短圆柱试验研究及理论分析[D].湘潭：湖南科技大学，2018.
[15] MUNTEAN R,CAZACU C,MIZGAN P,et al.Practical applications of dispersely reinforced concrete with polypropylene fibers:beams[J].Procedia Engineering,2017,181:285-292.
[16] 徐礼华，黄彪，李彪，等.循环荷载作用下聚丙烯纤维混凝土受压应力-应变关系研究[J].土木工程学报，2019,52(4):1-12.
[17] 陶毅，张海镇，史庆轩，等.内置FRP约束混凝土的方钢管混凝土轴压承载力[J].土木建筑与环境工程，2017,39(2):43-49.
[18] 申强.CFRP/GFRP层间混杂约束混凝土圆柱强度和延性性能试验研究[J].公路，2017,62(4):243-249.
[19] 吴刚，吕志涛.FRP约束混凝土圆柱无软化段时的应力-应变关系研究[J].建筑结构学报，2003,24(5):1-9.
[20] 毕骏，张豫川，谌文武，等.聚丙烯纤维对混凝土力学性能影响的研究[J].硅酸盐通报，2015,34(6):1694-1699.
[2] 寇佳亮，席方勇，赵坤龙.卤水-干湿循环侵蚀下高延性混凝土力学性能试验研究[J].建筑结构，2019,49(8):98-102.
[3] 魏洋，纪军，张敏.FRP网格拉伸性能及加固水下混凝土试验研究[J].玻璃钢/复合材料，2014(7):10-15.
[4] 王海良，郭海洋，杨新磊，等.玄武岩纤维防水混凝土力学性能试验研究[J].建筑结构，2013,43(S1):1467-1470.
[5] 张勤，李三亚，赵永胜，等.纤维网增强混凝土复合材料约束混凝土应力-应变关系研究[J].建筑结构学报，2021,42(4):166-176.
[6] 尹世平，彭驰，艾珊霞.纤维编织网增强混凝土加固混凝土柱轴压性能的研究[J].四川大学学报(工程科学版),2016,48(4):85-92.
[7] 潘毅，吴晓飞，郭瑞，等.长期荷载作用下FRP约束混凝土应力-应变关系分析模型[J].建筑结构学报，2017,38(10):139-148.
[8] AL GEMEEL A N,YAN Z G.Using textile reinforced engineered cementitious composite for concrete columns confinement[J].Composite Structures,2019,210:695-706.
[9] AL GEMEEL A N,YAN Z G.Experimental investigation of textile reinforced engineered cementitious composite (ECC)for square concrete column confinement[J].Construction and Building Materials,2018,174:594-602.
[10] KHALOO A,MORADI H,KAZEMIAN A,et al.Experimental investigation on the behavior of RC Arches strengthened by GFRP composites[J].Construction and Building Materials,2019,235(C):117519.
[11] BOURNAS D A,LONTOU P V,PAPANICOLAOU C G,et al.Textile-reinforced mortar versus fiber-reinforced polymer confinement in reinforced concrete columns[J].ACI Structural Journal,2007,104(6):740-748.
[12] BENZAID R,CHIKH N E,MESBAH H.Study of the compressive behavior of short concrete columns confined by fiber reinforced composite[J].Arabian Journal Forence & Engineering,2009,34(1B):15-26.
[13] YIN S P,PENG C,JIN Z Y.Research on mechanical properties of axial-compressive concrete columns strengthened with TRC under a conventional and chloride wet-dry cycle environment[J].Journal of Composites for Construction,2017,21(1):04016061.1-04016061.11.
[14] 言兴.GRC网格布与聚丙烯砼复合加固短圆柱试验研究及理论分析[D].湘潭：湖南科技大学，2018.
[15] MUNTEAN R,CAZACU C,MIZGAN P,et al.Practical applications of dispersely reinforced concrete with polypropylene fibers:beams[J].Procedia Engineering,2017,181:285-292.
[16] 徐礼华，黄彪，李彪，等.循环荷载作用下聚丙烯纤维混凝土受压应力-应变关系研究[J].土木工程学报，2019,52(4):1-12.
[17] 陶毅，张海镇，史庆轩，等.内置FRP约束混凝土的方钢管混凝土轴压承载力[J].土木建筑与环境工程，2017,39(2):43-49.
[18] 申强.CFRP/GFRP层间混杂约束混凝土圆柱强度和延性性能试验研究[J].公路，2017,62(4):243-249.
[19] 吴刚，吕志涛.FRP约束混凝土圆柱无软化段时的应力-应变关系研究[J].建筑结构学报，2003,24(5):1-9.
[20] 毕骏，张豫川，谌文武，等.聚丙烯纤维对混凝土力学性能影响的研究[J].硅酸盐通报，2015,34(6):1694-1699.
Experimental study on axial compression performance of concrete circular columns reinforced with GRC mesh and polypropylene fiber reinforced concrete
Abstract: The axial compression performance tests of 24 concrete circular column specimens reinforced with GRC mesh and polypropylene fiber reinforced concrete were completed, and the effects of parameters such as the content of polypropylene fiber in different reinforced concrete layers, the location of GRC mesh wrapping and wrapping method on the compressive performance of the specimens were studied, and the damage morphology, load-strain curve, load-displacement curve and ultimate load were obtained. The results show that: the damage pattern of the specimens is mainly central crush and oblique shear damage, most of the specimens reinforcement layer concrete eventually peeled. Both GRC mesh and polypropylene fibers can significantly enhance the ductility of the specimens. The calculation method of axial compression load capacity of positive section of concrete circular column reinforced with GRC mesh and polypropylene fiber reinforced concrete was proposed, the calculated value is slightly smaller than the test value by comparison.
Keywords: GRC mesh; polypropylene fiber reinforced concrete; composite reinforcement; failure mechanism; axial compression performance; axial compression capacity
370
0
0