Creep and post-creep mechanical properties of reinforced concrete columns

被引：6

作者：

Chen, Pang ^{[1
]}

Zhang, Geng ^{[1
]}

Cao, Shaojun ^{[1
]}

Lv, Xueyuan ^{[2
]}

Shen, Bin ^{[3
]}

机构：

[1] Hebei Univ Technol, Sch Civil & Transportat Engn, Tianjin 300401, Peoples R China

[2] China Construct First Grp Construct & Dev CO LTD, Beijing, Peoples R China

[3] State Nucl Power Demonstrat Plant CO LTD, Beijing, Peoples R China

来源：

JOURNAL OF BUILDING ENGINEERING | 2023年 / 63卷

基金：

中国国家自然科学基金;

关键词：

Reinforced concrete; Creep; Creep model; Creep recovery; Peak compressive strain; RECYCLED COARSE; SHRINKAGE; RECOVERY; BEHAVIOR; STRAIN; MODEL;

D O I：

10.1016/j.jobe.2022.105521

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this study, 32 groups of reinforced concrete axial compression columns were examined using creep tests and axial compression failure tests after creep. The reinforced concrete columns were of strength grade C30-C60, load level 0.09-0.38, and total reinforcement ratio 0.79-2.01%. This study investigated the effects of the axial compressive strength of concrete under loading, the load level, and the total reinforcement ratio of longitudinal compression steel bars on the creep and post-creep mechanical properties of reinforced concrete short columns under axial compression. A formula for calculating the creep of reinforced concrete short columns under axial compression is proposed. A formula for calculating the peak compressive strain of reinforced concrete short columns under axial compression considering the effect of creep is established.

引用

页数：23

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