ANSYS在CFRP约束高强混凝土柱受压分析中的应用
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摘要
目的研究碳纤维布约束高强混凝土方柱的轴心受压力学性能和机理.方法对8组(24个)碳纤维布约束高强混凝土方柱试件进行了试验和分析,利用ANSYS软件对CFRP布约束高强混凝土柱的轴心受压性能的全过程进行了模拟和分析计算,并对其进行了应力和应变分析.结果将试验与有限元计算的结果对比表明二者显示了良好的一致性.结论合理地建立有限元模型可以较精确的模拟碳纤维布约束高强混凝土的受力性能,揭示了碳纤维布约束高强混凝土的受力机理,并且利用试验和有限元分析的结果对强度公式进行了修正.
In order to investigate the compression capacity and mechanical behavior of high-strength concrete square columns confined with CFRP under axial load,twenty four square columns reinforced with CFRP were tested experimentally.The whole experimental process was simulated and analyzed by using the FEM method through the ANSYS program and the computing results are compared with the results obtained from test.By comparing the results,it shows a nice agreement between them.Based on the calculation results of ANSYS,the strain-stress analysis were carried out.The comparison and analysis of results indicate that the FEM method making use of the ANSYS program can accurately simulate the behavior of the high-strength concrete columns confined with CFRP with proper numerical model and can reveal well the loading mechanism of it under axial load.According to the results of calculating and test,the strength formula is modified.
In order to investigate the compression capacity and mechanical behavior of high-strength concrete square columns confined with CFRP under axial load,twenty four square columns reinforced with CFRP were tested experimentally.The whole experimental process was simulated and analyzed by using the FEM method through the ANSYS program and the computing results are compared with the results obtained from test.By comparing the results,it shows a nice agreement between them.Based on the calculation results of ANSYS,the strain-stress analysis were carried out.The comparison and analysis of results indicate that the FEM method making use of the ANSYS program can accurately simulate the behavior of the high-strength concrete columns confined with CFRP with proper numerical model and can reveal well the loading mechanism of it under axial load.According to the results of calculating and test,the strength formula is modified.
引文
[1]ACI Committee 440.State-of-the-art report onfiber reinforced plastic(FRP)reinforcement for con-crete structures[M].Detroit:Michigan,1996.
[2]王苏岩,韩克双.纤维增强复合材料(FRP)加固混凝土柱的性能研究发展[J].地震工程与工程学报,2004,24(1):97-104.
[3]王苏岩,韩克双,王吉忠,等.CFRP约束高强混凝土方柱应力应变关系分析模型[J].沈阳建筑大学学报:自然科学版,2006,22(2):257-261.
[4]江见鲸.钢筋混凝土结构非线性有限元分析[M].西安:陕西科学技术出版社,1994.
[5]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.
[6]陆新征,冯鹏,叶列平.FRP布约束混凝土方柱轴心受压性能的有限元分析[J].土木工程学报,2003,36(2):46-51.
[7]Amir Mirmiran.Behavior of concrete columns confinedby fiber composites[J].Journal of Structure Engineer-ing,1997,123(5):583-590.
[8]Amir Mirmiran.Effect of column parameters on FRP-confined Concrete[J].Journal of Composites forConstruction,1998,2(4):175-185.
[9]Lam L.Teng J G.Strength models for fiber-rein-forced plastic-confined concrete.Journal of StructuralEngineering[J].ASCE,2002,128(5):612-623.
[2]王苏岩,韩克双.纤维增强复合材料(FRP)加固混凝土柱的性能研究发展[J].地震工程与工程学报,2004,24(1):97-104.
[3]王苏岩,韩克双,王吉忠,等.CFRP约束高强混凝土方柱应力应变关系分析模型[J].沈阳建筑大学学报:自然科学版,2006,22(2):257-261.
[4]江见鲸.钢筋混凝土结构非线性有限元分析[M].西安:陕西科学技术出版社,1994.
[5]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.
[6]陆新征,冯鹏,叶列平.FRP布约束混凝土方柱轴心受压性能的有限元分析[J].土木工程学报,2003,36(2):46-51.
[7]Amir Mirmiran.Behavior of concrete columns confinedby fiber composites[J].Journal of Structure Engineer-ing,1997,123(5):583-590.
[8]Amir Mirmiran.Effect of column parameters on FRP-confined Concrete[J].Journal of Composites forConstruction,1998,2(4):175-185.
[9]Lam L.Teng J G.Strength models for fiber-rein-forced plastic-confined concrete.Journal of StructuralEngineering[J].ASCE,2002,128(5):612-623.
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