HRB600E钢筋混凝土偏心受压柱受力性能试验研究
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摘要
通过对9根HRB600E级钢筋混凝土偏心受压柱进行单调加载试验,分析不同配筋率、偏心距对构件侧向挠度、纵向钢筋应变和受压边缘混凝土应变的影响。研究结果表明:HRB600E级钢筋混凝土偏压柱的破坏形态与普通钢筋混凝土柱相似,HRB600E级钢筋在柱中工作性能较好,其强度得到充分发挥。其他条件相同情况下,HRB600E级钢筋混凝土偏压柱的挠度、钢筋应变及混凝土压应变随偏心距的增大而增大,随配筋率的增大而减小。当HRB600E级钢筋抗拉强度设计值取为520 MPa时,采用《混凝土结构设计规范》(GB 50010-2010)中受压承载力计算公式计算HRB600E钢筋混凝土柱的受压承载力有足够的安全储备。
Based on the uniaxial loading research on nine eccentrically loaded reinforced concrete columns with HRB600 E steel bars,the effect of different reinforcement ratios and eccentricity on the lateral deflection,longitudinal steel strain,and strain of the edge concrete were analyzed. The results show that the failure mode of HRB600 E-class reinforced concrete column is similar to that of ordinary reinforced concrete columns. HRB600 E steel bars work well in the column and its strength is fully exerted. Under the same conditions,the deflection,strain of reinforcement and concrete compression strain of HRB600 E reinforced concrete column increase with the increase of eccentricity,and decrease with the increase of reinforcement ratio. When the yield strength design value of 600 MPa steel bars is 520 MPa,the bending capacity formula of code for design of concrete structures( GB 50010-2010) is safe for calculating reinforced concrete columns with HRB600 E steel bars.
Based on the uniaxial loading research on nine eccentrically loaded reinforced concrete columns with HRB600 E steel bars,the effect of different reinforcement ratios and eccentricity on the lateral deflection,longitudinal steel strain,and strain of the edge concrete were analyzed. The results show that the failure mode of HRB600 E-class reinforced concrete column is similar to that of ordinary reinforced concrete columns. HRB600 E steel bars work well in the column and its strength is fully exerted. Under the same conditions,the deflection,strain of reinforcement and concrete compression strain of HRB600 E reinforced concrete column increase with the increase of eccentricity,and decrease with the increase of reinforcement ratio. When the yield strength design value of 600 MPa steel bars is 520 MPa,the bending capacity formula of code for design of concrete structures( GB 50010-2010) is safe for calculating reinforced concrete columns with HRB600 E steel bars.
引文
[1]中华人民共和国国家质量监督检验检疫总局. GB/T 1499. 2-2018,钢筋混凝土用钢第2部分:热轧带肋钢筋[S].北京:中国标准出版社,2018.
[2]中华人民共和国住房和城乡建设部. GB 50010-2010,混凝土结构设计规范[S].北京:中国建筑工业出版社,2011.
[3]杜毛毛.高强钢筋在混凝土结构中的应用评析[J].混凝土,2012,275(9):121-125.
[4] ACI 318—08,Building code requirements for structural concrete and commentary[S]. ACI,2008.
[5] EN1992—1—1:2004,Eurocode 2:design of concrete structures-part 1-1:general rules and rules for buildings[S]. CEN,2004.
[6] Natalie A L,Rangan B V. Studies on high-strength concrete columns under eccentric compression[J]. ACI Structural Journal,1996,93(6):631-638.
[7] Xu C,Jin L,Ding Z,et al. Size effect tests of high-strength RC columns under eccentric loading[J]. Engineering Structures,2016,126:78-91.
[8]张健新,戎贤,刘平.配置600 MPa钢筋高韧性混凝土框架中节点变形性能[J].地震工程与工程振动,2017,1(2):165-172.
[9]戎贤,乔超男,杨春晖.配置600 MPa级钢筋的十字形柱抗震性能试验研究[J].工业建筑,2017,47(6):17-21.
[10]张健新,戎贤,皮凤梅.配置600 MPa钢筋的无粘结部分预应力混凝土梁试验研究[J].世界地震工程,2017,33(2):142-147.
[11]刘立新,张艳丽. 500 MPa级钢筋混凝土轴心受压短柱受力性能研究[J].郑州大学学报(工学版),2006,27(4):1-5.
[12]刘立新,李洪彦. 500 MPa级钢筋混凝土偏心受压柱受力性能的试验研究[J].郑州大学学报(工学版),2007,6(2):30-34.
[13]王静,王命平. HRBF500钢筋混凝土柱的受压试验研究[J].工程力学,2011,28(10):152-157.
[2]中华人民共和国住房和城乡建设部. GB 50010-2010,混凝土结构设计规范[S].北京:中国建筑工业出版社,2011.
[3]杜毛毛.高强钢筋在混凝土结构中的应用评析[J].混凝土,2012,275(9):121-125.
[4] ACI 318—08,Building code requirements for structural concrete and commentary[S]. ACI,2008.
[5] EN1992—1—1:2004,Eurocode 2:design of concrete structures-part 1-1:general rules and rules for buildings[S]. CEN,2004.
[6] Natalie A L,Rangan B V. Studies on high-strength concrete columns under eccentric compression[J]. ACI Structural Journal,1996,93(6):631-638.
[7] Xu C,Jin L,Ding Z,et al. Size effect tests of high-strength RC columns under eccentric loading[J]. Engineering Structures,2016,126:78-91.
[8]张健新,戎贤,刘平.配置600 MPa钢筋高韧性混凝土框架中节点变形性能[J].地震工程与工程振动,2017,1(2):165-172.
[9]戎贤,乔超男,杨春晖.配置600 MPa级钢筋的十字形柱抗震性能试验研究[J].工业建筑,2017,47(6):17-21.
[10]张健新,戎贤,皮凤梅.配置600 MPa钢筋的无粘结部分预应力混凝土梁试验研究[J].世界地震工程,2017,33(2):142-147.
[11]刘立新,张艳丽. 500 MPa级钢筋混凝土轴心受压短柱受力性能研究[J].郑州大学学报(工学版),2006,27(4):1-5.
[12]刘立新,李洪彦. 500 MPa级钢筋混凝土偏心受压柱受力性能的试验研究[J].郑州大学学报(工学版),2007,6(2):30-34.
[13]王静,王命平. HRBF500钢筋混凝土柱的受压试验研究[J].工程力学,2011,28(10):152-157.