形状记忆合金对混凝土梁驱动效应分析

被引:47
作者
邓宗才
李庆斌
机构
[1] 清华大学,清华大学
关键词
形状记忆合金; 混凝土梁; 挠度; 预应力; 智能材料与结构;
D O I
10.15951/j.tmgcxb.2002.02.007
中图分类号
TU375.1 [梁];
学科分类号
081304 ; 081402 ;
摘要
着重研究形状记忆合金偏心埋置于混凝土梁后 ,合金在逆相变过程中对梁变形的驱动效应。研究了合金预应变值、配置量及直径粗细、混凝土龄期、通电激励模式、试件养护方法及截面尺寸等因素对于梁变形性能(合金驱动效应 )的影响规律。试验结果表明 :合金在逆相变过程中能对混凝土梁产生很大的驱动力 ,使得对梁挠度值的主动控制与调整成为可能 ;可以按需要增加预应力值 ,以补偿预应力损失等 ;合金的预应变值、配置量、通电激励模式、直径粗细等因素对于合金的驱动效应有较大影响。
引用
收藏
页码:41 / 47
页数:7
相关论文
共 9 条
[1]  
One dimensional thermomechanical constitutive relations for shape memory material. C. Liang,and C. A. Rogers. Journal of Intelligent Material and Structures . 1990
[2]  
Microstructure and mechanical properties of sputter- deposited NiTi alloy thin films. A. Ishida and S. Miyazaki. Journal of Engineering . 1999
[3]  
The shape control of composite beam with embedded memory alloy wire actuators. Sup Choi and Jung Ju Lee. Smart Materials and Structures . 1998
[4]  
Static adjustment of beam deflections by means of induced actuators. P. Gaudenzi and R. Barboni. Smart Materials and Structures . 1999
[5]  
Base isolation system with shape memory alloy device for elevated highway bridges. Krzysztof Wilde,Paolo Gardoni,Yozo Fujino. Engineering Structures . 2000
[6]  
Finite element analysis of the behavior of shape memory alloy and their applications. L. C. Brinson. and R. Lamming. Inter national Journal Solid Structure . 1993
[7]  
One dimensional constitutive behavior of shape memory alloy: Thermomechanical derivation with non constant material functions and redefined martensite intrnal variable. L. C. Brinson. Journal of Intelligent Material and Structures . 1993
[8]  
Concept of intelligent materials. T. A. Takagi. Journal of Intelligent Material System and Structures . 1990
[9]  
Material and structural characterization of the dynamic behavior of shape memory alloy reinforced composites. S. DE Santis,F. Trocchu and G. Ostiguy. Journal of Composite Materials . 1997