型钢外包活性粉末混凝土柱受力性能和裂缝宽度及变形研究
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摘要
对6根型钢外包活性粉末混凝土柱分别进行轴心受压和偏心受压试验,得出了型钢外包活性粉末混凝土柱在轴心受压与偏心受压状态下裂缝的开展规律及变形特征;对不同强度等级的试验柱的试验结果进行对比分析,研究了各级荷载作用下试验柱的受力性能。并采用有限元软件对试验进行模拟,得出试件的裂缝云图及荷载变形曲线,与试验结果对比,吻合度较高,说明上述研究可为型钢活性粉末混凝土柱工程应用提供理论依据。
Axial compression and eccentric compression tests were carried out for six steel columns reinforced by reactive powder concrete( RPC). The fracture morphology and deformation characteristics of the test columns under the ultimate load are studied,and the experimental results of the reactive powder concrete steel columns with different strength grades are compared and analyzed. The test results of test columns with different strength levels are compared and analyzed,and the mechanical properties of test columns under different loads are studied. The finite element software is used to simulate the test, and the fracture cloud diagram and load deformation curve of the specimen are obtained. Compared with the test results,the simulation has a high degree of anastomosis. The above research can provide theoretical basis for the engineering application of RPC columns.
Axial compression and eccentric compression tests were carried out for six steel columns reinforced by reactive powder concrete( RPC). The fracture morphology and deformation characteristics of the test columns under the ultimate load are studied,and the experimental results of the reactive powder concrete steel columns with different strength grades are compared and analyzed. The test results of test columns with different strength levels are compared and analyzed,and the mechanical properties of test columns under different loads are studied. The finite element software is used to simulate the test, and the fracture cloud diagram and load deformation curve of the specimen are obtained. Compared with the test results,the simulation has a high degree of anastomosis. The above research can provide theoretical basis for the engineering application of RPC columns.
引文
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[14]徐晓,郝文秀,杜瑶.活性粉末混凝土柱有限元分析模型研究[J].河北农业大学学报,2013,36(06):109-111.
[2]姚志雄.活性粉末混凝土力学特性及疲劳寿命研究[J].铁道科学与工程学报,2016,13(07):1275-1281.
[3]Muhammad N.S.Hadi,Ahmed Al-Tikrite.Behaviour of FibreReinforced RPC Columns under Different Loading Conditions[J].Construction and Building Materials,2017.
[4]卜良桃,罗恺彦.型钢外包活性粉末混凝土(RPC)的界面黏结性能[J].科学技术与工程,2018,18(03):307-312.
[5]卜良桃,苏丽静,张琦.锚固深度对拔出法检测活性粉末混凝土强度影响的试验研究[J].科学技术与工程,2018(09):284-289.
[6]贾方方.钢筋与活性粉末混凝土黏结性能的试验研究[D].北京:北京交通大学,2013:1-157.
[7]C.Brian,C.Gordan.The Worlds First Ductal Road Bridge Shepherds Gully Creek Bridge[C].CIA 21st Biennial Conference,Brisbane,2003:1-11.
[8]魏亚雄,方志.预制装配式活性粉末混凝土箱梁桥的结构性能[J].公路工程,2016,41(05):11-16,27.
[9]卢祖梁,方志.活性粉末混凝土混合梁桥性能研究[J].公路工程,2016,41(05):22-27.
[10]我国首座超高性能混凝土预制桥梁通过验收[J].商品混凝土,2016,(09):11.
[11]刘娟红,宋少民.活性粉末混凝土:配置、性能与微结构[M].北京:化学工业出版社,2013:10-12.
[12]卜良桃,刘勇.外包活性粉末混凝土型钢柱轴压性能分析[J].深圳大学学报(理工版),2017,34(03):245-251.
[13]卜良桃,姚江.型钢外包活性粉末混凝土柱偏压性能试验研究[J].湘潭大学自然科学学报,2017,39(03):18-23.
[14]徐晓,郝文秀,杜瑶.活性粉末混凝土柱有限元分析模型研究[J].河北农业大学学报,2013,36(06):109-111.