Bond-slip relationship of rebar in lightweight aggregate concrete

被引：9

作者：

Yang, Xue ^{[1
]}

Wu, Tao ^{[1
]}

Liu, Xi ^{[1
]}

Liu, Yang ^{[1
]}

机构：

[1] Changan Univ, Sch Civil Engn, Xian, Peoples R China

来源：

STRUCTURES | 2022年 / 45卷

基金：

中国国家自然科学基金;

关键词：

Lightweight aggregate concrete; Bond -slip relationship; Additional embedded bars; Analytical bond model; STEEL; STRENGTH; STRESS; BEHAVIOR; REINFORCEMENT; BARS; PERFORMANCE; MODEL;

D O I：

10.1016/j.istruc.2022.10.010

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents the bond-slip relationship of deformed rebar in lightweight aggregate concrete (LWAC) considering the effect of additional embedded bars around the centric bar. Twelve groups of specimens considering the amount of embedded rebar, deployments, rebar diameters, and concrete types were constructed. The test results indicate that the additional embedded bars alter the bond-slip relationship and failure modes, which the proposed strut mechanism between rebars can illustrate. Next, an analytical solution for bond strength was derived based on a proposed strut mechanism and the thick-walled theory. A modified bond stress-slip model was then developed for LWAC by incorporating the proposed bond-strength equations, which were found to give a good prediction of the experimental results.

引用

页码：2198 / 2209

页数：12

共 34 条

[1]

A.C.I. Committee, 2003, 408R-03: Bond and Development of Straight Reinforcing Bars in Tension, Technical Documents

[2]

Abrishami HH, 1996, ACI STRUCT J, V93, P703

[3] Shear behaviour of reinforced palm kernel shell concrete beams [J].