为了研究碳纤维增强复合材料(CFRP)筋混凝土梁的非线性力学性能,基于非线性理论推导了CFRP筋梁的有限元分析模型:对4个预应力CFRP筋混凝土梁进行了非线性全过程分析,考察了预应力CFRP筋、GFRP筋和普通钢筋的应力发展规律.与试验资料对比可知,计算结果与试验数据吻合良好,说明采用弥散裂缝模式、Owen屈服准则和Hinton压碎准则能较好地描述混凝土开裂、屈服和压碎特性,同时也说明了CFRP筋及其力学效应用组合单元模拟的有效性以及本文中研制程序的正确性.CFRP筋具有高强度性能,梁试件破坏时CFRP筋均未失效;与受拉区配筋为钢筋相比,GFRP筋在全过程中处于弹性阶段.
参考文献
| [1] | Nannia A.FRP reinforcement for concrete structures:Properties and applications[M].Amsterdam:Elsevier Science Publishers,1993. |
| [2] | 欧进萍,王勃,张新越,等.混凝土结构用CFRP筋的感知性能试验研究[J].复合材料学报,2003,20(6):47-51.Ou Jinping,Wang Bo,Zhang Xinyue,et al.Experimental study on self-sensing properties of CFRP bars for concrete structures[J].Acta Materiae Compositae Sinica,2003,20(6):47-51. |
| [3] | Cosenza E,Manfredi G,Realfonzo R.Behavior and modeling of bond of FRP rebars to concrete[J].ASCE,Journal of Composites for Construction,1997,1(2):40-51. |
| [4] | 张大长,吴智深.CFRP纤维布加固RC柱的有限元分析模型[J].复合材料学报,2005,22(4):156-164.Zhang Dachang,Wu Zhishen.Finite element analytical models for reinforced concrete columns reinforced with CFRP sheets[J].Acta Materiae Compositae Sinica,2005,22(4):156-164. |
| [5] | Rehm G,Franke L.Plastic bonded fiber glass rods as reinforcement for concrete[J].Civil Engineering,1974,51(4):115-120. |
| [6] | Mutsuyoshi H,Veharak K,Machida A.Mechanical properties and design methods of concrete beams reinforced with CFRP[J].Transaction of Japan Concrete Institute,1990,12(1):231-238. |
| [7] | Yonekura A,Tazawa E.Flexural characteristics of prestressed concrete beams using fiber plastic rods as prestressing tendons[J].Transaction of Japan Concrete Institute,1991,13(1):239-246. |
| [8] | Abdelrahman A A,Rizkalla S H.Service ability of concrete beams prestressed by carbon-fiber-reinforced-plastic bars[J].ACI Structural Journal,1997,94(4):447-457. |
| [9] | 薛伟辰,王晓辉.有黏结预应力CFRP筋混凝土梁试验及非线性分析[J].中国公路学报,2007,20(4):41-47.Xue Weichen,Wang Xiaohui.Experiment and nonlinear analysis of concrete beams with bonded prestressing CFRP tendons[J].China Journal of Highway and Transport,2007,20(4):41-47. |
| [10] | 薛伟辰,王晓辉.预应力CFRP筋高性能混凝土T型梁试验研究与非线性分析[J].铁道学报,2007,29(3):72-77.Xue Weiehen,Wang Xiaohui.Experimental studies and PEM analysis of T-shape HPC beams prestressed with CFRP tendons[J].Journal of the China Railway Society,2007,29(3):72-77. |
| [11] | 卢少微,谢怀勤.智能CFRP加固RC梁荷载效应的实时模拟与测评[J].复合材料学报,2006,23(3):158-164.Lu Shaowei,Xie Huaiqin.Real-time simulation and evaluation of load effects for smart CFRP-strengthened RC beams[J].Aeta Materiae Compositae Sinica,2006,23(3):158-164. |
| [12] | Barbosa A F,Ribeiro G O.Analysis of reinforced concrete structures using ANSYS nonlinear concrete model[J].Computational Mechanics,1998,6(1):1-6. |
| [13] | 司炳君,孙治国,艾庆华.Solid65单元在混凝土结构有限元分析中的应用[J].工业建筑,2007,37(1):87-92.Si Bingjun,Sun Zhiguo,Ai Qinghua.Application of solid65 element in the finite element analysis of concrete structures[J].Industrial Construction,2007,37(1):87-92. |
| [14] | Hinton E,Owen D R J.Finite element software for plates and shells[M].Swansea,UK:Pineridge Press Ltd,1984. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%