Theoretical analysis on long-term deflection of GFRP-concrete hybrid structures with partial interaction

被引：7
|
作者：
Zhang, Shiqian [1 ,2 ]
Xue, W. C. [2 ]
Liao, Xiandong [1 ]
机构：
[1] China Construct Eighth Engn Div Co Ltd, Shanghai, Peoples R China
[2] Tongji Univ, Dept Struct Engn, Shanghai, Peoples R China
来源：
COMPOSITE STRUCTURES | 2019年 / 216卷
关键词：
GFRP-concrete hybrid structure; Creep; Shrinkage; Long-term deflection; Partial interaction; Calculation model; COMPOSITE BEAMS; CREEP-BEHAVIOR; FLEXURAL BEHAVIOR; ELEMENTS; BRIDGE;
D O I：
10.1016/j.compstruct.2019.02.07
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The creep and shrinkage of concrete and the creep of glass-fiber reinforced polymer (GFRP) may lead to the increase of long-term deflection of GFRP-concrete hybrid structures under service loading, due to the change of internal forces and stresses. This paper presents a calculation model to consider the influence of the aforementioned changes in analyzing the long-term deflection of GFRP-concrete hybrid structures with partial interaction under service loading, based on the age-adjusted effective modulus method (AEMM). The calculated results from the proposed calculation model agree well with the available experimental results. A further discussion is also made about the effects of the concrete creep and shrinkage and the GFRP creep, as well as the shear stiffness of shear connectors on long-term behavior of GFRP-concrete hybrid structures. Especially, the significant influence of concrete shrinkage on long-term interface slip, interface shear and long-term deflection is found. What's more, the long-term deflection may increase with the augment of horizontal shear stiffness of shear connectors.
引用
收藏
页码：1 / 11
页数：11
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