Feasibility of iron-based shape memory alloy strips for shear strengthening of damaged RC beams promoting the formation of plastic hinges

被引：4
|
作者：
Traver, Celia [1 ]
Ruiz-Pinilla, Joaquin G. [2 ]
Monserrrat, Andrea [1 ]
Montoya-Coronado, Luis A. [2 ]
Miguel, Pedro F. [1 ]
Ribas, Carlos [2 ]
Cladera, Antoni [2 ]
Bonet, Jose L. [1 ]
机构：
[1] Univ Politecn Valencia, ICITECH, Valencia 46022, Spain
[2] Univ Balearic Isl, Dept Ind Engn & Construct, Palma De Mallorca 07122, Spain
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 401卷
关键词：
Iron-based shape memory alloy; Shear strength; Damaged reinforced concrete beams; Plastic hinge; External strips; Cantilever beam; Continuous beam; Rotation capacity; Prestressing; Experimental study; CIVIL ENGINEERING STRUCTURES; TRANSVERSE REINFORCEMENT; CONCRETE STRUCTURES; MEMBERS; CAPACITY; MODEL; BEHAVIOR; PERFORMANCE;
D O I：
10.1016/j.conbuildmat.2023.132906
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This research focuses on the proof of concept of the feasibility of iron-based shape memory alloys strips (Fe-SMA) to strengthen damaged structures by promoting the yielding of longitudinal reinforcement. For this purpose, an experimental campaign on real-scale reinforced concrete beams previously damaged on shear and retested after being strengthened was carried out. The strengthening technique consists of external Fe-SMA strips wrapping the beams. The results show a very significant increase in both shear strength and ductility. In addition, shear predictions were calculated and compared by several design models. This study highlights the potentialities of Fe-SMA as a strengthening technique for damaged beams on shear.
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收藏
页数：18
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