方形钢骨混凝土弯扭构件非线性有限元分析
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摘要
为了解方形钢骨混凝土构件在弯扭复合作用下的抗扭性能,采用ABAQUS软件对7根钢骨混凝土弯扭构件进行非线性分析,通过分析得出了不同弯扭比、箍筋间距及钢骨尺寸对试件抗扭性能的影响规律。结果表明:当弯扭比n>1时,试件的破坏类型为弯型破坏,并且随着n值的增大,试件的抗扭强度逐渐减小;当弯扭比n<1时,试件的破坏类型为扭型破坏,试件抗扭强度随着n的增大而增大。通过提高试件的钢骨尺寸以及加密箍筋间距对提升试件的极限抗扭强度有一定的促进作用,但对于扭矩峰值后的延性变形影响较小。
In order to solve the torsion resistance of a square steel reinforced concrete member under the combined action of bending and torsion,the nonlinear analysis of 7 flexural and torsional members of steel reinforced concrete is carried out by using ABAQUS software.Through the analysis,the influence of the bending and torsion ratio(n),the spacing of the stirrup and the size of the steel bone on the torsion resistance of the specimen is obtained.The results show that when the ratio of bending and torsion is greater than 1,the failure type of the specimen is bending type,and with the increase of n value,the torsion strength of the specimen decreases gradually.When the ratio of bending and torsion is less than 1,the failure type of the specimen is torsional type,and the torsion strength of the specimen increases with the increase of n.By improving the size of the steel and the spacing of the stirrups,the ultimate torsion strength resistance of the test piece can be promoted,but it has little effect on the ductile deformation after the peak torque.
In order to solve the torsion resistance of a square steel reinforced concrete member under the combined action of bending and torsion,the nonlinear analysis of 7 flexural and torsional members of steel reinforced concrete is carried out by using ABAQUS software.Through the analysis,the influence of the bending and torsion ratio(n),the spacing of the stirrup and the size of the steel bone on the torsion resistance of the specimen is obtained.The results show that when the ratio of bending and torsion is greater than 1,the failure type of the specimen is bending type,and with the increase of n value,the torsion strength of the specimen decreases gradually.When the ratio of bending and torsion is less than 1,the failure type of the specimen is torsional type,and the torsion strength of the specimen increases with the increase of n.By improving the size of the steel and the spacing of the stirrups,the ultimate torsion strength resistance of the test piece can be promoted,but it has little effect on the ductile deformation after the peak torque.
引文
[1]刘维亚.钢与混凝土组合结构理论与实践[M].北京:中国建筑工业出版社,2008.
[2]刘坚.钢与混凝土组合结构设计原理[M].北京:科学出版社,2005.
[3]TIRASIT P,KAWASHIMA K.Seismic performance of square reinforced concrete columns under combined cyclic flexural and torsional loadings[J].Journal of Earthquake Engineering,2007,11(3):425-452.
[4]NIE J G,WANG Y H,FAN J S.Experimental research on concrete filled steel tube columns under combined compression-bendingtorsion cyclic load[J].Thin-Walled Structures,2013,67(2):1-14.
[5]徐定一.压弯剪扭复合受力型钢混凝土L形柱破损机理及强度计算[D].西宁:广西大学,2017.
[6]白羽,袁书强,陈适才.弯扭复合作用下型钢混凝土柱的抗震性能分析[J].太原学院学报(自然科学版),2017,35(4):4-12.
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[8]韩林海,钟善桐.钢管混凝土弯扭构件的理论分析和试验研究[J].工业建筑,1994(2):3-8.
[9]尧国皇.钢管混凝土构件在复杂受力状态下的工作机理研究[D].福州:福州大学,2006.
[10]中华人民共和国行业标准.混凝土结构设计规范:GB 50010-2010[S].北京:中国建筑工业出版社,2010.
[11]LUBLINER J,OLIVER J,OLLER S,et al.A plastic-damage model for concrete[J].International Journal of Solids&Structures,1989,25(3):299-326.
[12]LEE J,FENVES G L.Plastic-damage model for cyclic loading of concrete structures[J].Journal of Engineering Mechanics,1998,124(8):892-900.
[13]葛康,陈世鸣.约束混凝土损伤塑性模型的研究[J].结构工程师,2015,31(1):14-20.
[14]田连波,侯建国.ABAQUS中混凝土塑性损伤因子的合理取值研究[J].湖北大学学报(自然科学版),2015,37(4):340-345,358.
[15]HSU H L,WANG C L.Flexural-torsional behavior of steel reinforced concrete members subjected to repeated loading[J].Earthquake Engineering and Structural Dynamics,2000:667-682.
[2]刘坚.钢与混凝土组合结构设计原理[M].北京:科学出版社,2005.
[3]TIRASIT P,KAWASHIMA K.Seismic performance of square reinforced concrete columns under combined cyclic flexural and torsional loadings[J].Journal of Earthquake Engineering,2007,11(3):425-452.
[4]NIE J G,WANG Y H,FAN J S.Experimental research on concrete filled steel tube columns under combined compression-bendingtorsion cyclic load[J].Thin-Walled Structures,2013,67(2):1-14.
[5]徐定一.压弯剪扭复合受力型钢混凝土L形柱破损机理及强度计算[D].西宁:广西大学,2017.
[6]白羽,袁书强,陈适才.弯扭复合作用下型钢混凝土柱的抗震性能分析[J].太原学院学报(自然科学版),2017,35(4):4-12.
[7]韩林海,钟善桐.钢管混凝土压扭、弯扭构件承载力相关方程[J].哈尔滨建筑工程学院学报,1994(2):32-37.
[8]韩林海,钟善桐.钢管混凝土弯扭构件的理论分析和试验研究[J].工业建筑,1994(2):3-8.
[9]尧国皇.钢管混凝土构件在复杂受力状态下的工作机理研究[D].福州:福州大学,2006.
[10]中华人民共和国行业标准.混凝土结构设计规范:GB 50010-2010[S].北京:中国建筑工业出版社,2010.
[11]LUBLINER J,OLIVER J,OLLER S,et al.A plastic-damage model for concrete[J].International Journal of Solids&Structures,1989,25(3):299-326.
[12]LEE J,FENVES G L.Plastic-damage model for cyclic loading of concrete structures[J].Journal of Engineering Mechanics,1998,124(8):892-900.
[13]葛康,陈世鸣.约束混凝土损伤塑性模型的研究[J].结构工程师,2015,31(1):14-20.
[14]田连波,侯建国.ABAQUS中混凝土塑性损伤因子的合理取值研究[J].湖北大学学报(自然科学版),2015,37(4):340-345,358.
[15]HSU H L,WANG C L.Flexural-torsional behavior of steel reinforced concrete members subjected to repeated loading[J].Earthquake Engineering and Structural Dynamics,2000:667-682.