Experimental investigation on axial compression behavior of steel reinforced concrete columns with welded stirrups

被引：25

作者：

Sun, Lele ^{[1
]}

Ma, Qijie ^{[1
]}

Han, Fei ^{[1
]}

Liu, Zexin ^{[1
]}

Li, Jinglong ^{[1
]}

Wang, Peijun ^{[1
]}

Zhao, Hui ^{[2
]}

Sun, Jian ^{[2
]}

机构：

[1] Shandong Univ, Sch Civil Engn, Jinan 250061, Shandong, Peoples R China

[2] Qingdao City Construct Grp Co Ltd, Qingdao 26000, Shandong, Peoples R China

来源：

ENGINEERING STRUCTURES | 2020年 / 208卷

基金：

中国国家自然科学基金;

关键词：

Steel reinforced concrete column; Welded stirrups; Axial compression strength; Confined concrete; Local buckling; Design method; HIGH-STRENGTH CONCRETE; ENCASED COMPOSITE COLUMNS; BUCKLING BEHAVIOR; ANALYTICAL-MODEL; LOAD; PERFORMANCE; CAPACITY;

D O I：

10.1016/j.engstruct.2019.109924

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Test results on Steel Reinforced Concrete Column with Welded Stirrups (SRCC-WS) were presented and a simplified design method was proposed. The SRCC-WS had no longitudinal steel bars to reduce the labor forces and avoid the difficulty in connecting longitudinal bars at construction site, and stirrups were welded directly to the steel reinforcement to ensure they worked together. Five SRCC-WSs were tested under axial compression; and two traditional Steel Reinforced Concrete Columns (SRCCs) were tested for comparison. Failure modes, load-displacement curves, and strain evolution curves measured from tests were presented. Test results showed that the ultimate axial compression strength and ductility of a SRCC-WS was a little higher than that of a SRCC having the same overall steel ratio. A simplified design method for calculating the effective lateral confined pressure on the core concrete provided by the combined action of welded stirrups and steel reinforcement flanges was proposed. The calculated yield compression strength of a SRCC-WS based on the proposed concrete model agreed better with the experimental value than that calculated by the method in Eurocode 4.

引用

页数：16

共 40 条

[1]

[Anonymous], 199411 PNEN

[2]

[Anonymous], 2010, 500102010 GB NAT STA

[3] Buckling analysis of embedded concrete columns armed with carbon nanotubes [J].

Arani, Ali Jafarian ;

Kolahchi, Reza .

COMPUTERS AND CONCRETE, 2016, 17 (05) :567-578

[4] Behaviour of partially encased composite columns with high strength concrete [J].

Begum, Mahbuba ;

Driver, Robert G. ;

Elwi, Alaa E. .

ENGINEERING STRUCTURES, 2013, 56 :1718-1727

[5]

Bilouei Babak Safari, 2016, Computers and Concrete, An International Journal, V18, P1053

[6] Behavior of Fully Encased Steel-Concrete Composite Columns Subjected to Monotonic and Cyclic Loading [J].

Campian, Cristina ;

Nagy, Zsolt ;

Pop, Maria .

INTERNATIONAL SCIENTIFIC CONFERENCE URBAN CIVIL ENGINEERING AND MUNICIPAL FACILITIES (SPBUCEMF-2015), 2015, 117 :439-451

[7] Analytical model for predicting axial capacity and behavior of concrete encased steel composite stub columns [J].

Chen, CC ;

Lin, NJ .

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH, 2006, 62 (05) :424-433

[8]

Chen CC., 1996, P 3 NATL C STRUCTURA, P2197

[9] Effects of steel-to-member depth ratio and axial load on flexural ductility of concrete-encased steel composite columns [J].

Chen, Cheng-Cheng ;

Chen, Chien-Chung ;

Shen, Jia-Hau .

ENGINEERING STRUCTURES, 2018, 155 :157-166

[10] Analytical model for predicting axial compressive behavior of steel reinforced concrete column [J].

Chen, Suwen ;

Wu, Pei .

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH, 2017, 128 :649-660

← 1 2 3 4 →