Size effect and strain rate effect on seismic behavior of reinforced concrete beam-column joints

被引：11

作者：

Jin, Liu ^{[1
]}

Wan, Shunyin ^{[1
]}

Li, Dong ^{[1
]}

Du, Xiuli ^{[1
]}

机构：

[1] Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

来源：

STRUCTURAL CONCRETE | 2022年 / 23卷 / 03期

基金：

中国国家自然科学基金;

关键词：

mesoscale simulation; RC joints; shear strength; size effect; strain rate effect; DYNAMIC-BEHAVIOR; SHEAR FAILURE; CONNECTIONS; PERFORMANCE; SIMULATION; AGGREGATE; STRENGTH; STEEL;

D O I：

10.1002/suco.202100670

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The mechanical behavior of reinforced concrete (RC) beam-column joints with different sizes under cyclic loads at varying rates was investigated, aiming at attaining a better understanding of the size effect and strain rate effect on RC beam-column joints. First, a 2D mesoscale numerical model was established and verified by existing experimental results. Second, numerical tests regarding seismic performances of RC beam-column joints were carried out. A total of four structural sizes and five strain rates were taken into consideration. The damage patterns, hysteretic curves, skeleton curves, the displacement ductility, the stiffness degradation, and the shear deformation of joints under different working conditions were analyzed. Finally, the size effect and strain rate effect on shear resistance and shear failure mechanism of joints were discussed. In addition, a semitheoretical formula considering structural sizes and strain rates for shear strength calculation was proposed and verified by available experimental data.

引用

页码：1453 / 1468

页数：16

共 46 条

[1]

ABRAMS DP, 1987, ACI STRUCT J, V84, P502

[2] Dynamic behavior of reinforced concrete beams under varying rates of concentrated loading [J].

Adhikary, Satadru Das ;

Li, Bing ;

Fujikake, Kazunori .

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING, 2012, 47 :24-38

[3]

ALHADDAD MS, 1995, ACI STRUCT J, V92, P526

[4] Influence of strain rate on the seismic response of RC structures [J].

Asprone, Domenico ;

Frascadore, Raffaele ;

Di Ludovico, Marco ;

Prota, Andrea ;

Manfredi, Gaetano .

ENGINEERING STRUCTURES, 2012, 35 :29-36

[5]

Asprone D, 2009, ACI STRUCT J, V106, P523

[6] A study on the size effect of RC beam-column connections under cyclic loading [J].

Barbhuiya, Salim ;

Choudhury, Abdul Munim .

ENGINEERING STRUCTURES, 2015, 95 :1-7

[7]

BAZANT ZP, 1984, J AM CONCRETE I, V81, P456

[8]

Bing L, 2000, ACI STRUCT J, V97, P619

[9] COMPRESSIVE BEHAVIOR OF CONCRETE AT HIGH-STRAIN RATES [J].

BISCHOFF, PH ;

PERRY, SH .

MATERIALS AND STRUCTURES, 1991, 24 (144) :425-450

[10] High-strain-rate tensile behaviour of concrete [J].

Cadoni, E ;

Labibes, K ;

Berra, M ;

Giangrasso, M ;

Albertini, C .

MAGAZINE OF CONCRETE RESEARCH, 2000, 52 (05) :365-370

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