The study on bond-slip constitutive model of shape memory alloy fiber-reinforced concrete

被引：9

作者：

Shi, Mingfang ^{[1
]}

Xu, Guangping ^{[1
]}

Zhao, Jitao ^{[2
]}

Xu, Lidan ^{[1
]}

机构：

[1] Inner Mongolia Univ Sci & Technol, Sch Civil Engn, Baotou 014010, Peoples R China

[2] Panzhihua Univ, Sch Civil & Architecture Engn, Panzhihua 617000, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2024年 / 418卷

关键词：

Shape memory alloy; Fiber-reinforced concrete; Bond-slip; Constitutive model; SUPERELASTIC SMA FIBERS; CAPACITY; BEHAVIOR; RESISTANCE; MORTAR; NITI;

D O I：

10.1016/j.conbuildmat.2024.135395

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this paper, the central pull-out tests were carried out on shape memory alloy fiber -reinforced concrete (SMAFRC) under monotonic load. The failure modes and failure mechanisms of the specimens were observed and analyzed, and the bond strength and slip distance were measured. The effects of different influencing factors on the mechanical behavior of bond -slip were investigated, and the bond -slip constitutive model of shape memory alloy (SMA) bar and SMA-FRC was proposed. The test results indicated that the ultimate bond strength between SMA bars and SMA-FRC gradually increased with the addition of SMA fiber, the reduction of SMA bar diameter, the decrease of anchorage length, and the lowering of temperature within a certain range. In this paper, based on the theoretical analysis of the test data, a reasonable bond -slip constitutive model was established, which can better predict the test results.

引用

页数：13

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