|Table of Contents|

Deformation Characteristic of Concrete Beams Embedded Superelastic Shape Memory Alloy(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2007年03期
Page:
1-6
Research Field:
Publishing date:
2007-09-20

Info

Title:
Deformation Characteristic of Concrete Beams Embedded Superelastic Shape Memory Alloy
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
Keywords:
smart concrete;  shape memory alloy;  superelasticity;  deformation characteristic;  self-restoring
PACS:
TU375.1
DOI:
-
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.

References:

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Last Update: 2007-09-20