嵌入
材料科学
马镫
混凝土保护层
复合材料
打滑(空气动力学)
粘结强度
结构工程
债券
滑脱
纤维混凝土
钢筋
纤维
胶粘剂
图层(电子)
工程类
财务
经济
航空航天工程
作者
Jianrui Zhang,Xiangyu Meng,Jiaxin Song,Xiwang Cao,Kaize Ma
出处
期刊:Structures
[Elsevier]
日期:2023-11-01
卷期号:57: 105268-105268
标识
DOI:10.1016/j.istruc.2023.105268
摘要
The effects of steel fiber content, stirrup reinforcement ratio, cover thickness of ultra-high performance concrete (UHPC) and embedded length of H-shaped steel on interfacial bond performance were studied through pull-out tests of ten specimens. The crack development process and damage mode of the specimens were analyzed by the load-slip(P-S) curves obtained at the loading end and the strain distribution of the H-shaped steel web. A formula for characteristic bond strength of H-shaped steel and UHPC was established, and a constitutive relationship for bond slip was proposed. A finite element model based on nonlinear springs was established to simulate the bond-slip relationship and the whole process of loss of performance at the interface of H-shaped steel and UHPC. The results showed that the strain of H-shaped steel decreased gradually along its embedment length, and the amount of steel fiber content, cover thickness and embedding length had large influences on the ultimate bond stress.
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