Experimental Study on Seismic Performance of Active Confined RC Piers with NiTiNb-SMA Wires

被引：0

作者：

Pan S. ^{[1
]}

Yue R. ^{[1
]}

Hui H. ^{[1
]}

Zhu Y. ^{[1
]}

机构：

[1] School of Civil Engineering, Dalian University of Technology, Dalian

来源：

Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences | 2020年 / 47卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Active confinement; NiTiNb-SMA retrofitting; Passive confinement; Pseudo-static experiment; Seismic pier;

D O I：

10.16339/j.cnki.hdxbzkb.2020.07.011

中图分类号：

学科分类号：

摘要：

To investigate the seismic performance of reinforced concrete (RC) piers retrofitted by active confinement of domestic NiTiNb-SMA wires, a pseudo-static test of three column specimens was carried out. Based on the experimental phenomena and lateral force-displacement curves, the skeleton curves, bearing capacity and ductility, strength degradation, cumulative energy dissipation and residual displacement of the specimens were analyzed. The results show that thermal excited NiTiNb-SMA wires can effectively provide active confinement stress for the pier, which reduced the damage and improved the ductility and energy dissipation capacity of piers. Compared with the control specimens, thermal excited SMA wires increased the displacement ductility coefficient and cumulative energy dissipation of the specimen by 27.8% and 10.4%, respectively. What's more, it effectively reduced the strength degradation and improved the ability of restoring the residual displacement of piers. © 2020, Editorial Department of Journal of Hunan University. All right reserved.

引用

页码：93 / 101

页数：8

共 21 条

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