期刊
INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE
卷 13, 期 8, 页码 1209-1222出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15583058.2018.1501116
关键词
Cyclical behavior; mortise-tenon joints; moment-rotation model; shape memory alloy (SMA); strengthening
资金
- National Natural Science Foundation of China [51278399]
- Science and Technology Department of Shaanxi Province of China [2016ZDJC-23]
- National Key Research and Development Program of China [2017YFC0703507]
This article presents the results of a study on the cyclical behavior of mortise-tenon joints strengthened with shape memory alloy (SMA) wires. Four 1/3.52 scaled joint specimens reinforced with different number of SMA wires were subjected to low-cyclic reversed loading tests and the moment-rotation hysteretic curves were obtained. The cyclic behavior of joints strengthened with SMA were compared with that of joints strengthened with conventional reinforcement methods, such as cramp, carbon fiber, steel pins, U-shaped hoop, angle steel, curved plate, etc. Results indicated that the strength, stiffness, and energy dissipation capacity of the mortise-tenon joints strengthened with SMA were improved markedly. The residual deformation of the mortise-tenon joints strengthened with SMA is approx. 20% less than that strengthened with the conventional strengthening methods. A nonlinear model composed of one three-parameter power function and one straight line was presented for the moment-rotation of the mortise-tenon joints and good agreement between predictions and tests were observed.
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