Elastic Restraint Effect of Concrete Circular Columns with Ultrahigh-Performance Concrete Jackets: An Analytical and Experimental Study

被引：3
作者：
Alsomiri, Mujahed [1 ]
Jiang, Xiaofang [1 ]
Liu, Zhao [2 ]
机构：
[1] Southeast Univ, Sch Civil Engn, Nanjing 210018, Peoples R China
[2] Southeast Univ, Sch Civil Engn, Minist Educ, Key Lab Concrete & Prestressed Concrete Struct, Nanjing 210018, Peoples R China
来源：
MATERIALS | 2021年 / 14卷 / 12期
基金：
美国国家科学基金会;
关键词：
concrete circular columns; strengthening; retrofitting; deterioration; UHPC; elastic restraint; jacketing; HIGH-STRENGTH CONCRETE; REINFORCED-CONCRETE; CEMENTITIOUS COMPOSITES; FRP; BEHAVIOR; STEEL; DURABILITY; REHABILITATION; INTERFACE; RETROFIT;
D O I：
10.3390/ma14123278
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Concrete circular columns are among the most common vertical load-bearing members in structural engineering. Because of the change of service loads or environmental factors, the strengthening of deteriorated members is often demanded to restore and maintain their performance. In view of the limitations of the traditional strengthening methods and the superior mechanical properties of the new material, ultra-high-performance concrete (UHPC), this study analyzed the stress-strain state of concrete circular columns confined by UHPC jackets under axial compression in the elastic stage. Since elastic analysis is the basis for the service limit state design, the elastic stress solution was derived through the theory of elasticity, and experimental verification of the effectiveness of the UHPC jackets in circular concrete columns was performed. Theoretical bases and references for practical strengthening works are provided.
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页数：20
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