玄武岩纤维布-聚氯乙烯管复合约束纤维再生混凝土短柱的轴压性能

doi:10.19936/j.cnki.2096-8000.20231128.008

摘要/Abstract

摘要： 为研究不同约束条件下的纤维再生混凝土短柱的受力性能,制作了45个再生混凝土短柱并对其进行了轴心抗压试验。探讨了聚氯乙烯(Polyvinyl Chloride,PVC)管、玄武岩纤维(Basalt Fiber Reinforced Polymer,BFRP)布的层数以及BFRP布-PVC管复合约束对其受压性能的影响。结果表明:试件的承载力、极限应变和延性随外加BFRP布层数增加而上升;采用PVC管及BFRP布加固能明显提高短柱承载力;BFRP布-PVC管复合加固短柱充分利用了不同材料的优点,不仅提高了混凝土短柱的抗压强度,而且改善了素混凝土脆性破坏问题。此外,建立了极限应力与极限应变模型,其计算值与试验值具有较好的一致性,为今后的工程应用提供了一定的理论依据。

关键词: BFRP布, 纤维再生混凝土, PVC管, 轴向抗压性能, 韧性, 应力-应变模型, 复合材料

Abstract: In order to study the axial compression performance of fiber-recycled concrete short columns under different restraint conditions, 45 recycled concrete short columns were studied in static axial compression tests. The influence of the polyvinyl chloride (PVC) pipe, the number of basalt fiber reinforced polymer (BFRP) sheet layers, and the composite reinforcement of BFRP sheet-PVC pipe on its uniaxial axial compression performance were discussed. The results show that: the bearing capacity, ultimate strain, and ductility of specimens are all improved as the number of BFRP layers is raised. BFRP-PVC reinforcement specimens, when coupled with the benefits of various materials, not only enhance concrete’s compressive strength but also solve the problem of brittle failure to a certain extent, and has broad application prospects. In addition, the ultimate stress model and ultimate strain model formulas are established, and the calculated values are in good agreement with the test values, providing a certain theoretical basis for future engineering applications.

Key words: BFRP, fiber recycled concrete, PVC, axial compression performance, toughness, stress-strain model, composites

中图分类号:

TB332

张振雷. 玄武岩纤维布-聚氯乙烯管复合约束纤维再生混凝土短柱的轴压性能[J]. 复合材料科学与工程, 2023, 0(11): 58-69.

ZHANG Zhenlei. Axial compression properties of basalt fiber reinforced polymer-polyvinyl chloride composite reinforced fiber recycled concrete short columns[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(11): 58-69.

参考文献

[1] HOU C, HAN L H, ZHAO X L. Full-range analysis on square CFST stub columns and beams under loading and chloride corrosion[J]. Thin-Walled Structures, 2013, 68: 50-64.
[2] 王知乐, 袁学锋, 姜荣斌. 侵蚀环境下多维修方式加固混凝土梁桥受力性能研究[J]. 工业建筑, 2020, 50(11): 174-177, 183.
[3] 王立波, 赵军. 再生混凝土配合比优化设计[J]. 混凝土与水泥制品, 2021(6): 99-102.
[4] GAO D Y, ZHANG L J. Flexural performance and evaluation method of steel fiber reinforced recycled coarse aggregate concrete[J]. Construction and Building Materials, 2018, 159: 126-136.
[5] KIRTHIKA S K, SINGH S K. Durability studies on recycled fine aggregate concrete[J]. Construction and Building Materials, 2020, 250(5): 118850.
[6] KAZMI S M S, MUNIB M J, WU Y F, et al. Effect of macro-synthetic fibers on the fracture energy and mechanical behavior of recycled aggregate concrete[J]. Construction and Building Materials, 2018, 189: 857-868.
[7] 李可. 碳纤维加固钢筋混凝土梁疲劳性能研究[D]. 南京: 东南大学, 2015.
[8] 邢丽丽, 孔祥清. 外贴FRP加固钢筋混凝土梁结构性能研究进展[J]. 混凝土, 2018(9): 40-44.
[9] BAI Y L, DAI J G, OZBAKKALOGLU T. Cyclic stress-strain model incorporating buckling effect for steel reinforcing bars embedded in FRP-confined concrete[J]. Composite Structures, 2017, 182: 54-66.
[10] PROTCHENKO K, LES′NIAK P, SZMIGIERA E, et al. New model for analytical predictions on the bending capacity of concrete elements reinforced with FRP bars[J]. Materials, 2021, 14(3): 693-693.
[11] ZHOU A, BÜYÜKZTÜRK O, LAU D. Debonding of concrete-epoxy interface under the coupled effect of moisture and sustained load[J]. Cement and Concrete Composites, 2017, 80: 287-297.
[12] 王秋婉, 廖维张, 王俊杰. BFRP-FRCM复合层研究进展[J]. 复合材料科学与工程, 2021(1): 121-128.
[13] HE J, LU Z, TAN S R, et al. Effect of temperature variation and pre-sustained loading on the bond between basalt FRP sheets and concrete[J]. Materials, 2020, 13(7): 1530-1548.
[14] AL-MEKHLAFI G M, AL-OSTA M A, SHARIF A M. Behavior of eccentrically loaded concrete-filled stainless steel tubular stub columns confined by CFRP composites[J]. Engineering Structures, 2020, 205(C): 110113.
[15] ZENG J J, LIANG S D, LI Y L, et al. Compressive behavior of FRP-confined elliptical concrete-filled high-strength steel tube columns[J]. Composite Structures, 2021, 266: 113808.
[16] SHAO Y T, MIRMIRAN A. Experimental investigation of cyclic behavior of concrete-filled fiber reinforced polymer tubes[J]. Journal of Composites for Construction, 2005, 9(3): 263-273.
[17] SAAFI M. Development and behavior of a new hybrid column for civil infrastructure systems[D]. Huntsville: The University of Alabama in Huntsville, 2001.
[18] LOPRESTO V, LEONE C, IORIO I D. Mechanical characterisation of basalt fibre reinforced plastic[J]. Composites Part B: Engineering, 2011, 42(4): 717-723.
[19] DAVIS P, BURN S, et al. Long-term performance prediction for PE pipes[J]. Water Intelligence Online, 2009, 8(8): 1-192.
[20] THOMAS A R, LOUISE V P. Comparison of fiberglass and other polymeric well casings, Part Ⅰ: Susceptibility to degradation by chemicals[J]. Ground Water Monitoring & Remediation, 1997, 17(1): 97-103.
[21] FENG C C, YU F, FANG Y. Mechanical behavior of PVC tube confined concrete and PVC-FRP confined concrete: A review[J]. Structures, 2021, 31: 613-635.
[22] LU Y Y, LI N, LI S. Behavior of FRP-confined concrete-filled steel tube columns[J]. Polymers, 2014, 6(5): 1333-1349.
[23] 普通混凝土配合比设计规程: JGJ 55—2011[S]. 北京: 中国建筑工业出版社, 2011.
[24] 混凝土结构试验方法标准: GB/T 50152—2012[S]. 北京: 中国建筑工业出版社, 2012.
[25] DANISH A, MOSABERPANAH M A. Formation mechanism and applications of cenospheres: A review[J]. Journal of Materials Science, 2020, 55(11): 4539-4557.
[26] KHAN M I, USMAN M, RIZWAN S A, et al. Self-consolidating lightweight concrete incorporating limestone powder and fly ash as supplementary cementing material[J]. Materials, 2019, 12(18): 3050-3050.
[27] KHAN M, CAO M, ALI M. Effect of basalt fibers on mechanical properties of calcium carbonate whisker-steel fiber reinforced concrete[J]. Construction and Building Materials, 2018, 192: 742-753.
[28] HANIF A CHENG Y, LU Z, et al. Mechanical behavior of thin-laminated cementitious composites incorporating cenosphere fillers[J]. ACI Materials Journal, 2018, 115(1): 117-127.
[29] LAM L, TENG J G. Design-oriented stress-strain model for FRP-confined concrete[J]. Construction and Building Materials, 2003, 17(6): 471-489.
[30] MANDER J B, PRIESTLEY M J N, PARK R. Theoretical stress-strain model for confined concrete[J]. Journal of Structural Engineering, 1988, 114(8): 1804-1826.
[31] NEWMAN K, NEWMAN J B. Failure theories and design criteria for plain concrete[J]. Structure, Solid Mechanics and Engineering design, 1971, 963-995.
[32] FARDIS M N, KHALILI H H. FRP-encased concrete as a structural material[J]. Magazine of Concrete Research, 1982, 34(121): 191-202.
[33] SAADATMANESH H, EHSANI M R, LI M W. Strength and ductility of concrete columns externally reinforced with fiber composite straps[J]. Structural Journal, 1994, 91(4): 434-447.
[34] RICHART F E, BRANDTZæG A, BROWN R L. Study of the failure of concrete under combined compressive stresses[R]. Urbana The Universit of Illinois, 1928, 82-95.
[35] KARBHARI V M, GAO Y. Composite jacketed concrete under uniaxial compression-verification of simple design equations[J]. Journal of Materials in Civil Engineering, 1997, 9(4): 185-193.
[36] WILLAM K J. Constitutive model for the triaxial behavior of concrete[C]//IABSE Seminar on Concrete Structure subjected Triaxial Stresses. 1974: 1-30.
[37] MIRMIRAN A. Analytical and experimental investigation of reinforced concrete columns encased in fiberglass tubular jacket and use of fiber jacket for pile splicing: No. Final Report[R]. Florida Department of Transportation, 1997.
[38] HARRIES K A, KHAREL G. Behavior and modeling of concrete subject to variable confining pressure[J]. Materials Journal, 2002, 99(2): 180-189.
[39] BINICI B. An analytical model for stress-strain behavior of confined concrete[J]. Engineering Structures, 2005, 27(7): 1040-1051.
[40] WU G, WU Z S, LU Z T. Study of the stress-strain relationship of FRP-confined circular concrete column with a strain-softening response[J]. Journal of Civil Engineering, 2006(11): 7-14, 76.
[41] LAM L, TENG J G. Design-oriented stress-strain model for FRP-confined concrete in rectangular columns[J]. Journal of Reinforced Plastics and Composites, 2003, 22(13): 1149-1186.
[42] PANTELIDES C P, YAN Z. Confinement model of concrete with externally bonded FRP jackets or posttensioned FRP shells[J]. Journal of Structural Engineering, 2007, 133(9): 1288-1296.
[43] YOUSSEF M N, FENG M Q, MOSALLAM A S. Stress-strain model for concrete confined by FRP composites[J]. Composites Part B: Engineering, 2007, 38(5): 614-628.
[44] WEI Y Y, WU Y F. Unified stress-strain model of concrete for FRP-confined columns[J]. Construction and Building Materials, 2012, 26(1): 381-392.
[45] VINTZILEOU E, PANAGIOTIDOU E. An empirical model for predicting the mechanical properties of FRP-confined concrete[J]. Construction and Building Materials, 2008, 22(5): 841-854.