|本期目录/Table of Contents|

[1]欧进萍,匡亚川.形状记忆合金增强弹性混凝土梁的变形特征[J].建筑科学与工程学报,2007,24(03):1-6.
　OU Jin-ping,KUANG Ya-chuan.Deformation Characteristic of Concrete Beams Embedded Superelastic Shape Memory Alloy[J].Journal of Architecture and Civil Engineering,2007,24(03):1-6.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
24卷
期数:
2007年03期
页码:
1-6
栏目:
出版日期:
2007-09-20

文章信息/Info

Title:
Deformation Characteristic of Concrete Beams Embedded Superelastic Shape Memory Alloy
作者:
欧进萍1,2,匡亚川1,3
1. 大连理工大学 土木水利学院,辽宁 大连 116024; 2. 哈尔滨工业大学 土木工程学院, 黑龙江 哈尔滨 150090; 3. 中南大学 土木建筑学院,湖南 长沙 410075
Author(s):
OU Jin-ping1,2, KUANG Ya-chuan1,3
1. School of Civil Engineering and Hydraulic, Dalian University of Technology, Dalian 116024, Liaoning, China; 2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China; 3. School of Civil Engineering and Architecture, Central South University, Changsha 410075, Hunan, China
关键词:
智能混凝土;  形状记忆合金;  超弹性;  变形特征;  自修复
Keywords:
smart concrete;  shape memory alloy;  superelasticity;  deformation characteristic;  self-restoring
分类号:
TU375.1
DOI:
-
文献标志码:
A
摘要:
利用形状记忆合金的超弹性和受限回复产生较大驱动力的特性,研制了一种智能混凝土梁。通过试验研究了形状记忆合金智能混凝土梁的变形规律及其影响因素,揭示了形状记忆合金超弹性梁的自修复机理。试验结果表明:形状记忆合金显著地提高了混凝土梁的变形能力; 一旦外力消失,梁在形状记忆合金超弹性效应的驱动下,挠度迅速恢复,裂缝闭合; 增加合金的总截面面积可提高合金对混凝土梁的驱动效果,但钢筋塑性变形的存在,则对形状记忆合金梁的变形回复起着阻碍作用。
Abstract:
Taking advantage of the superelasticity effect of shape memory alloy(SMA)and the characteristic of applying large forces on the resisting member in the transformation of SMA when restoring, smart concrete beam was developed by embedding superelastic SMA into the tensile zone of concrete beams during concrete casting. Deformation behavior and influence of factors on the deformation characteristic of SMA smart concrete beam were investigated experimentally. Self-restoring mechanism of SMA smart concrete beam embedded superelastic SMA was analyzed. Experimental results show that SMA significantly increases structural survivability and allows structure to recover from residual deformation by damaged earthquake and typhoon; the crack almost closes completely when unloading after generating a large deflection in the beams. Increasing the consumption of superelastic SMA can significantly improve the capacity of self-restoration of SMA concrete beams, but the steel main bars play a very negative role in reducing residual deformation.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2007-08-01
基金项目:国家自然科学基金重点项目(50538020)
作者简介:欧进萍(1959-),男,湖南宁远人,教授,博士生导师,中国工程院院士,工学博士,E-mail:oujinping@hit.edu.cn。
更新日期/Last Update: 2007-09-20