钢筋混凝土异形柱抗扭性能的数值模拟
|
摘要
基于有限元软件ANSYS,建立压扭作用下钢筋混凝土异形柱抗扭性能的数值分析模型,并对压扭作用下9根异形柱的抗扭性能试验进行数值模拟分析.通过反复试算,提出混凝土异形柱压扭性能数值模拟的模型分析参数,分析轴压比对不同截面形状和尺寸的钢筋混凝土异形柱的开裂扭矩和极限扭矩的影响规律.研究结果表明:数值模型对异形柱的开裂扭矩和极限扭矩预测较准,但对扭矩-扭转角全过程曲线的预测还有待进一步改进;不同截面形状和尺寸的混凝土异形柱的开裂扭矩和极限扭矩随着轴压比的增大均近似呈直线增加,但当轴压比超过0.6时,异形柱的开裂扭矩和极限扭矩反将降低;随着轴压比的增大,异形柱从开裂扭矩发展到极限扭矩的过程缩短.
A numerical model for the torsional behavior of reinforced concrete columns with special-shaped cross sections under the actions of compression and torque was established by ANSYS.Some key finite element model parameters for the torsional behavior analysis of these specially-shaped columns were suggested through repeated trial numerical analysis of the tests of nine specially-shaped columns.The influence of axial compressive ratio on the cracking torque and ultimate torque of special-shaped columns with different sectional shapes and dimensions was analyzed.The results show that: the cracking torsion and ultimate torsion of specially-shaped columns is well predicted by finite element model,however the prediction of the full process curve of torque-torsion angle needs further improvement.The cracking torque and ultimate torque of specially-shaped columns increase approximately linearly with the increasing of 0~0.6 axial compressive ratio;for axial compressive ratio>0.6,the cracking torque and ultimate torque decrease.The developing process from the cracking torque to ultimate torque of the specially-shaped columns is shortened with the increasing of the axial compressive ratio.
A numerical model for the torsional behavior of reinforced concrete columns with special-shaped cross sections under the actions of compression and torque was established by ANSYS.Some key finite element model parameters for the torsional behavior analysis of these specially-shaped columns were suggested through repeated trial numerical analysis of the tests of nine specially-shaped columns.The influence of axial compressive ratio on the cracking torque and ultimate torque of special-shaped columns with different sectional shapes and dimensions was analyzed.The results show that: the cracking torsion and ultimate torsion of specially-shaped columns is well predicted by finite element model,however the prediction of the full process curve of torque-torsion angle needs further improvement.The cracking torque and ultimate torque of specially-shaped columns increase approximately linearly with the increasing of 0~0.6 axial compressive ratio;for axial compressive ratio>0.6,the cracking torque and ultimate torque decrease.The developing process from the cracking torque to ultimate torque of the specially-shaped columns is shortened with the increasing of the axial compressive ratio.
引文
[1]苏幼坡,康谷贻.钢筋砼T形纯扭构件出裂后工作性能全过程分析[J].天津大学学报,1989,22(3):58-66.
[2]汪夏明,黄蒲三,陆春阳.钢筋混凝土L形截面构件受扭承载力研究[J].广西大学学报:自然科学版,1994,19(2):149-157.
[3]王新堂,章钢.T形截面RC纯扭构件极限强度[J].青岛建筑工程学院学报,1996,17(1):10-18.
[4]汪夏明,黄蒲三,陆春阳.钢筋混凝土L形与T形截面抗扭计算探讨[J].广西大学学报:自然科学版,1996,21(1):70-73.
[5]中华人民共和国建设部.GB50010-2010混凝土结构设计规范[S].北京:中国建筑工业出版社,2011.
[6]中华人民共和国建设部.JGJ149-2006混凝土异形柱结构技术规程[S].北京:中国建筑工业出版社,2006.
[7]孙鹏程,吴祖安,毕佳.水平地震力作用下钢筋混凝土异形柱框架结构设计[J].解放军理工大学学报:自然科学版,2008,9(3):293-297.
[8]徐玉野,王全凤,邱政和.典型受火方式下等肢T形柱的耐火性能[J].华侨大学学报:自然科学版,2010,31(2):218-223.
[9]陆新征,江见鲸.利用斜支撑提高异型柱框架结构抗扭性能的研究[J].工业建筑,2002,32(6):39-41.
[10]邱政和.压力和扭矩共同作用下钢筋混凝土异形柱的抗扭性能研究[D].泉州:华侨大学,2011.
[11]江见鲸,陆新征,叶列平.混凝土结构有限元分析[M].北京:清华大学出版社,2005.
[12]程文瀼,王铁成,颜德姮,等.混凝土结构[M].北京:中国建筑工业出版社,2005.
[13]王妙芳,郭子雄.型钢混凝土柱的ANSYS数值模拟技术[J].华侨大学学报:自然科学版,2009,30(2):195-199.
[2]汪夏明,黄蒲三,陆春阳.钢筋混凝土L形截面构件受扭承载力研究[J].广西大学学报:自然科学版,1994,19(2):149-157.
[3]王新堂,章钢.T形截面RC纯扭构件极限强度[J].青岛建筑工程学院学报,1996,17(1):10-18.
[4]汪夏明,黄蒲三,陆春阳.钢筋混凝土L形与T形截面抗扭计算探讨[J].广西大学学报:自然科学版,1996,21(1):70-73.
[5]中华人民共和国建设部.GB50010-2010混凝土结构设计规范[S].北京:中国建筑工业出版社,2011.
[6]中华人民共和国建设部.JGJ149-2006混凝土异形柱结构技术规程[S].北京:中国建筑工业出版社,2006.
[7]孙鹏程,吴祖安,毕佳.水平地震力作用下钢筋混凝土异形柱框架结构设计[J].解放军理工大学学报:自然科学版,2008,9(3):293-297.
[8]徐玉野,王全凤,邱政和.典型受火方式下等肢T形柱的耐火性能[J].华侨大学学报:自然科学版,2010,31(2):218-223.
[9]陆新征,江见鲸.利用斜支撑提高异型柱框架结构抗扭性能的研究[J].工业建筑,2002,32(6):39-41.
[10]邱政和.压力和扭矩共同作用下钢筋混凝土异形柱的抗扭性能研究[D].泉州:华侨大学,2011.
[11]江见鲸,陆新征,叶列平.混凝土结构有限元分析[M].北京:清华大学出版社,2005.
[12]程文瀼,王铁成,颜德姮,等.混凝土结构[M].北京:中国建筑工业出版社,2005.
[13]王妙芳,郭子雄.型钢混凝土柱的ANSYS数值模拟技术[J].华侨大学学报:自然科学版,2009,30(2):195-199.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心