碳绞线体外预应力梁的基频分析
|
摘要
通过理论公式推导、有限元软件(ANSYS)分析以及试验研究等方法,对体外预应力碳绞线对简支梁基频的影响进行了分析。理论公式推导中,利用由分布质量梁模型得到的自由振动方程,对Ayaho Miyamoto等人给出的公式进行了修正和扩充,考虑了预应力筋在锚固点既有水平位移又有竖直位移的影响;推导出各种线型布置下梁的自振频率计算公式。分析结果表明,体外预应力简支梁与普通钢筋混凝土简支梁的基频没有显著区别,近似计算方法具有实用性。
Vibration models with external prestressed CFRP tendons were analyzed with theoretical calculation,finite -element software(ANSYS)and experiment in order to study the external prestressed CFRP tendons' influence to the dynamic performance.Based on the free vibration equation of beam with distributed mass,the formula presented by Ayaho Miyamoto etc.is improved by taking horizontal and vertical displacement of anchorage into account.Some formulae for frequency calculation are given when external tendons are arranged in different configurations.The results reveal that external prestressed tendons have no significant effect on the beam s basic frequency.At the same time,the formulae's practicability is verified by the results.
Vibration models with external prestressed CFRP tendons were analyzed with theoretical calculation,finite -element software(ANSYS)and experiment in order to study the external prestressed CFRP tendons' influence to the dynamic performance.Based on the free vibration equation of beam with distributed mass,the formula presented by Ayaho Miyamoto etc.is improved by taking horizontal and vertical displacement of anchorage into account.Some formulae for frequency calculation are given when external tendons are arranged in different configurations.The results reveal that external prestressed tendons have no significant effect on the beam s basic frequency.At the same time,the formulae's practicability is verified by the results.
引文
[1]熊学玉.体外预应力结构设计[M].北京:中国建筑工业出版社,2005
[2]ACI Committee 440.ACI 440.4R-04.Prestressing Concrete Structures with FRP Tendons[s].Farmington Hills,Mich:American Concrete Institute, 2004
[3]ACI Committee 440.ACI 440.1R-03.Guide for the Design and Con- struction of Concrete Reinforced with FRP Tendons[S].The United Stated,2003
[4]王海洋,李亮亮.体外预应力简支梁的动力性能分析[J].公路交通科技,2006,23(1):70-73
[5]Alkhairi F M,Naaman A E.Analysis of beam prestressed with unbolded internal or external tendons[J].JOURNAL OF STRUCTURAL ENGINEERING, 1993,119(9):2680-2700
[6]Ayaho Miyamoto,Member,ASCE,Katsuji Tei,Hideaki Nakamura,and John W.Bull.BEHAVIOR OF PRESTRESSED BEAM STRENGTHENED WITH EXTERNAL TENDONS.JOURNAL OF STRUCTURAL ENGINEERING,2000,9:1033-1044
[7]熊学玉,王寿生.体外预应力梁振动特性的分析与研究[J].地震工程与工程振动,2005,25(2):55-61
[8]王鹏,丁汉山,夏文俊等.碳绞线体外预应力桥梁预应力损失监测与分析[J].特种结构,2008,25(1):85-87
[9]李围.Ansys土木工程应用实例(第二版)[M].北京:中国水力水电出版社,2007
[10]祝效华,余志祥.ANSYS高级工程有限元分析范例精选[M].北京:电子工业出版社,2004
[11]郑玉庆,卜伟筠,周海浪,尹荣.体外预应力梁的振动问题的研究分析[J].四川建筑科学研究,2002,28(3):75-78
[2]ACI Committee 440.ACI 440.4R-04.Prestressing Concrete Structures with FRP Tendons[s].Farmington Hills,Mich:American Concrete Institute, 2004
[3]ACI Committee 440.ACI 440.1R-03.Guide for the Design and Con- struction of Concrete Reinforced with FRP Tendons[S].The United Stated,2003
[4]王海洋,李亮亮.体外预应力简支梁的动力性能分析[J].公路交通科技,2006,23(1):70-73
[5]Alkhairi F M,Naaman A E.Analysis of beam prestressed with unbolded internal or external tendons[J].JOURNAL OF STRUCTURAL ENGINEERING, 1993,119(9):2680-2700
[6]Ayaho Miyamoto,Member,ASCE,Katsuji Tei,Hideaki Nakamura,and John W.Bull.BEHAVIOR OF PRESTRESSED BEAM STRENGTHENED WITH EXTERNAL TENDONS.JOURNAL OF STRUCTURAL ENGINEERING,2000,9:1033-1044
[7]熊学玉,王寿生.体外预应力梁振动特性的分析与研究[J].地震工程与工程振动,2005,25(2):55-61
[8]王鹏,丁汉山,夏文俊等.碳绞线体外预应力桥梁预应力损失监测与分析[J].特种结构,2008,25(1):85-87
[9]李围.Ansys土木工程应用实例(第二版)[M].北京:中国水力水电出版社,2007
[10]祝效华,余志祥.ANSYS高级工程有限元分析范例精选[M].北京:电子工业出版社,2004
[11]郑玉庆,卜伟筠,周海浪,尹荣.体外预应力梁的振动问题的研究分析[J].四川建筑科学研究,2002,28(3):75-78
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