基于正交试验的复合钢管混凝土轴压柱影响参数分析
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摘要
采用ABAQUS有限元软件建立了外方内圆复合钢管混凝土轴压短柱的有限元模型,数值计算结果与相应的试验实测结果吻合较好.基于有限元数值模型和正交试验表的设计方法,设计了2水平7因子的正交试验表,以复合钢管混凝土试件的轴压承载力和单位长度工程造价的比值作为其力学性能影响参数的评价指标,根据正交试验结果的极差分析,确定了复合钢管混凝土评价指标诸因素的影响程度排列.通过对不同钢管壁厚和直径的分析,得到了极限承载力和荷载-应变关系曲线的变化规律,可为进一步的复合钢管混凝土结构分析和应用提供参考.
Series of tested results of composite-sectioned concrete filled steel tube(CFST) stub columns are used to verify the nonlinear FEA models in this paper.The calculated axial bearing capacities and load-strain curves are proved to agree with the measured data well.Orthogonal experiment of composite-sectioned CFST stub columns with 2 levels and 7 factors is designed based on the FEA models and the orthogonal design method,with an evaluation target of the ratio of axial bearing capacity and per meter engineering cost.According to the range analysis of the results of orthogonal experiment,related factors are ranged by influence degree.Based on the analysis of calculated results with different wall thickness and diameter of circular steel tubes,the axial bearing capacities and load-displacement curves are analyzed,as can be referred in the further research and applications of composite-sectioned CFST structures.
Series of tested results of composite-sectioned concrete filled steel tube(CFST) stub columns are used to verify the nonlinear FEA models in this paper.The calculated axial bearing capacities and load-strain curves are proved to agree with the measured data well.Orthogonal experiment of composite-sectioned CFST stub columns with 2 levels and 7 factors is designed based on the FEA models and the orthogonal design method,with an evaluation target of the ratio of axial bearing capacity and per meter engineering cost.According to the range analysis of the results of orthogonal experiment,related factors are ranged by influence degree.Based on the analysis of calculated results with different wall thickness and diameter of circular steel tubes,the axial bearing capacities and load-displacement curves are analyzed,as can be referred in the further research and applications of composite-sectioned CFST structures.
引文
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[14]李宁,叶燕华,陈丽华,等.自密实混凝土正交试验及工作性能测试方法研究[J].混凝土,2011(10):93-95.LI Ning,YE Yan-hua,CHEN Li-hua,et al.Research on orthogonal experimental design and testing methods of workability for self-compacting concrete[J].Concrete,2011(10):93-95.
[2]王志浩,成戎.复合方钢管混凝土短柱的轴压承载力[J].清华大学学报:自然科学版,2005,45(12):1596-1599.WANG Zhi-hao,CHENG Rong.Axial bearing capacity of composite-sectioned square concrete-filled steel tubes[J].Journal of Tsing-hua University:Sci&Tech,2005,45(12):1596-1599.
[3]马淑芳,郭红香,赵均海,等.复式钢管混凝土偏压柱试验[J].工业建筑,2007,37(12):28-30.MA Shu-fang,GUO Hong-xiang,ZHAO Jun-hai,et al.Experiment investigation on multibarrel tube-confined concrete under eccentriccompression[J].Industrial Construction,2007,37(12):28-30.
[4]裴万吉.复式钢管混凝土柱力学性能研究[D].西安:长安大学,2005.PEI Wan-ji.Research on mechanical performance of multibarrel tube-confined concrete columns[D].Xi’an:Chang’an University,2005.
[5]张扬,钱稼茹,纪晓东,等.内圆外方复合钢管混凝土短柱轴压承载力试验研究[J].世界地震工程,2011,27(3):40-46.ZHANG Yang,QIAN Jia-ru,JI Xiao-dong,et al.Experimental study on axial compressive strength of concrete filled composite steeltube short columns[J].World Earthquake Engineering,2011,27(3):40-46.
[6]钱稼茹,张扬,纪晓东,等.复合钢管高强混凝土短柱轴心受压性能试验与分析[J].建筑结构学报,2011,32(12):162-169.QIAN Jia-ru,ZHANG Yang,JI Xiao-dong,et al.Test and analysis of axial compressive behavior of short composite-sectioned highstrength concrete filled steel tubular columns[J].Journal of Building Structures,2011,32(12):162-169.
[7]韩林海.钢管混凝土结构:理论与实践[M].2版.北京:科学出版社,2007.HAN Lin-hai.Concrete filled steel tube structures:Theory and experience[M].2nd ed.Beijing:Science Press,2007.
[8]Wang Wen-da,Han Lin-hai,Zhao Xiao-ling.Analytical behavior of frames with steel beams to concrete-filled steel tubular column[J].Journal of Constructional Steel Research,2009,65(3):497-508.
[9]Huang Hong,Han Lin-hai,Tao Zhong,et al.Analytical behavior of concrete-filled double skin steel tubular(CFDST)stub columns[J].Journal of Constructional Steel Research,2010,66(4):542-555.
[10]Han Lin-hai,Wang Wei-hua,Yu Hong-xia.Experimental behavior of reinforced concrete(RC)beam to concrete-filled steeltubular(CFST)column frames subjected to ISO-834standard fire[J].Engineering Structures,2010,32(10):3130-3144.
[11]正交设计法编写组.正交设计法及其应用[M].南昌:江西人民出版社,1979.Orthogonal Design Writing Group.Method and application of orthogonal design[M].Nanchang:Jiangxi People’s Publishing House,1979.
[12]元成方,罗峥,丁铁峰,等.再生骨料混凝土碳化性能正交试验研究[J].武汉理工大学学报,2010,32(21):9-12.YUAN Cheng-fang,LUO Zheng,DING Tie-feng,et al.Orthogonal experiment of carbonation resistance for recycled aggregate con-crete[J].Journal of Wuhan University of Technology,2010,32(21):9-12.
[13]李俊,尹健,周士琼,等.基于正交试验的再生骨料混凝土强度研究[J].土木工程学报,2006,39(9):43-46.LI Jun,YIN Jian,ZHOU Shi-qiong,et al.Study on the strength of recycled aggregate concrete based on orthogonal experiment[J].China Civil Engineering Journal,2006,39(9):43-46.
[14]李宁,叶燕华,陈丽华,等.自密实混凝土正交试验及工作性能测试方法研究[J].混凝土,2011(10):93-95.LI Ning,YE Yan-hua,CHEN Li-hua,et al.Research on orthogonal experimental design and testing methods of workability for self-compacting concrete[J].Concrete,2011(10):93-95.
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