|Table of Contents|

Analysis of axial compression performance of steel reinforced concrete T-shaped column(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2023年04期
Page:
60-69
Research Field:
建筑结构
Publishing date:

Info

Title:
Analysis of axial compression performance of steel reinforced concrete T-shaped column
Author(s):
ZHAO Hailong1; 2;  XU Ruiwen1
(1.School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2. Key Laboratory of Coast Civil Structure Safety of Ministry of Education, Tianjin University, Tianjin 300072, China)
Keywords:
steel concrete T column;  FE model;  axial compressive property;  concrete stress;  stirrup stress;  steel ratio
PACS:
TU398
DOI:
10.19815/j.jace.2021.11062
Abstract:
In order to further study the mechanical performance of steel reinforced concrete T-shaped column with steel form of “square steel tube + T-shaped steel” under axial load and provide reference for the nonlinear analysis and seismic performance analysis of the stress process of steel reinforced concrete T-shaped column structure, the axial compression model of ordinary concrete T-shaped column was established by ANSYS finite element software. The rationality of the model was verified by comparing with the existing test results. On this basis, the model of “square steel tube + T-shaped steel” steel reinforced concrete T-shaped column was established, and its axial compression performance was analyzed by finite element method. The influences of the steel form of “square steel tube + T-shaped steel” on the stress of concrete section, reinforcement stress and steel stress were deeply studied, and the influence of the parameter change of steel ratio on the axial compression performance was quantitatively analyzed. The results show that compared with ordinary concrete T-shaped columns, the ultimate bearing capacity of “square steel tube + T-shaped steel” steel reinforced concrete T-shaped columns is significantly improved, but the effect of this steel distribution form on the ultimate bearing capacity of T-shaped columns decreases with the increase of stirrup characteristic value. The addition of steel makes the phenomenon of “stress arch” no longer obvious. The strong constraint area of steel is formed in the stirrup constraint area, which is mainly concentrated in the T-shaped steel web area and square steel tube area, and the stress distribution of concrete section is more balanced. With the increase of steel ratio, the average stress of section of T-shaped concrete column decreases under the same proportional load, the stress of steel is fully exerted, and the bearing capacity is significantly increased.

References:

[1] KAWAKAMI M,TOKUDA H,KAGAYA M,et al.Limit states of cracking and ultimate strength of arbitrary concrete sections under biaxial loading[J].ACI Journal Proceedings,1985,82(2):203-212.
[2]HSU C T.Channel-shaped reinforced concrete compression members under biaxial bending[J].ACI Structural Journal,1987,84(3):201-211.
[3]HSU C T.T-shaped reinforced concrete members under biaxial bending and axial compression[J].ACI Structural Journal,1989,86(4):460-468.
[4]LIU Z Q,XUE J Y,ZHAO H T,et al.Cyclic test for solid steel reinforced concrete frames with special-shaped columns[J].Earthquakes and Structures,2014,7(3):317-331.
[5]XUE J Y,CHEN Z P,ZHAO H T,et al.Shear mechanism and bearing capacity calculation on steel reinforced concrete special-shaped columns[J].Steel & Composite Structures,2012,13(5):473-487.
[6]CHEN C C,LI J M,WENG C C.Experimental behaviour and strength of concrete-encased composite beam-columns with T-shaped steel section under cyclic loading[J].Journal of Constructional Steel Research,2005,61(7):863-881.
[7]KIM S D,KIM S S,JU Y K.Strength evaluation of beam-column connection in the weak axis of H-shaped column[J].Engineering Structures,2008,30(6):1699-1710.
[8]王铁成,王晓伟.箍筋约束T形截面短柱轴压承载力试验研究[J].地震工程与工程振动,2009,29(2):103-109.
WANG Tiecheng,WANG Xiaowei.Experimental research on bearing capacity of axially loaded T-shaped short columns confined with stirrups[J].Journal of Earthquake Engineering and Engineering Vibration,2009,29(2):103-109.
[9]陈宗平,王 妮,钟 铭,等.型钢混凝土异形柱正截面承载力试验及有限元分析[J].建筑结构学报,2013,34(10):108-119.
CHEN Zongping,WANG Ni,ZHONG Ming,et al.Experimental study and finite element analysis on normal section bearing capacity of steel reinforced concrete special-shaped columns[J].Journal of Building Structures,2013,34(10):108-119.
[10]周子云,赵海龙,王铁成.型钢混凝土T形柱抗震性能试验研究[J].科学技术与工程,2017,17(24):257-262.
ZHOU Ziyun,ZHAO Hailong,WANG Tiecheng.Experimental research on seismic behavior of steel reinforced concrete T-shaped column[J].Science Technology and Engineering,2017,17(24):257-262.
[11]王彦宏,薛建阳,赵鸿铁,等.用ANSYS程序进行型钢混凝土偏压柱的有限元分析[J].哈尔滨工业大学学报,2003,35(增):109-112.
WANG Yanhong,XUE Jianyang,ZHAO Hongtie,et al.Finite element analysis for SRC columns by ANSYS program[J].Journal of Harbin Institute of Technology,2003,35(S):109-112.
[12]王晓伟.箍筋约束混凝土异形柱轴压性能试验及理论研究[D].天津:天津大学,2009.
WANG Xiaowei.Experimental and theoretical research on performance of axially specially shaped columns confined by stirrups[D].Tianjin:Tianjin University,2009.
[13]薛建阳,赵鸿铁,杨 勇,等.型钢混凝土柱粘结滑移性能及ANSYS数值模拟方法研究[J].建筑钢结构进展,2006,8(5):8-16.
XUE Jianyang,ZHAO Hongtie,YANG Yong,et al.Research on the bond-slip behavior and numerical simulation of steel reinforced concrete columns by ANSYS program[J].Progress in Steel Building Structures,2006,8(5):8-16.
[14]马付彪.型钢混凝土异形柱的粘结滑移性能研究[D].西安:西安建筑科技大学,2006.
MA Fubiao.Study on the bond-slip properties in steel reinforced concrete special-shaped columns[D].Xi'an:Xi'an University of Architecture and Technology,2006.
[15]王晓伟,魏士华.轴压重复荷载作用下箍筋约束混凝土L形柱性能研究[J].建筑结构,2019,49(6):79-85,97.
WANG Xiaowei,WEI Shihua.Research on the performance of L-shaped concrete columns confined by stirrups under axial repeated loads[J].Building Structure,2019,49(6):79-85,97.
[16]王铁成,郝贵强,赵海龙,等.反复荷载作用下纤维增强异形柱的抗震性能试验[J].天津大学学报,2010,43(11):957-963.
WANG Tiecheng,HAO Guiqiang,ZHAO Hailong,et al.Test on seismic behavior of special-shaped columns reinforced by fiber under cyclic loading[J].Journal of Tianjin University,2010,43(11):957-963.
[17]EL-TAWIL S M,DEIERLEIN G G.Fiber element analysis of composite beam-column cross-sections[R].New York:Cornell University,1996.
[18]混凝土异形柱结构技术规程:JGJ 149—2017[S].北京:中国建筑工业出版社,2017.
Technical specification for concrete structures with specially shaped columns:JGJ 149—2017[S].Beijing:China Architecture & Building Press,2017.
[19]混凝土结构设计规范:GB 50010—2010[S].北京:中国建筑工业出版社,2010.
Code for design of concrete structures:GB 50010—2010[S].Beijing:China Architecture & Building Press,2010.
[20]MANDER J B,PRIESTLEY M J N,PARK R.Theoretical stress-strain model for confined concrete[J].Journal of Structural Engineering,1988,114(8):1804-1826.

Memo

Memo:
-
Last Update: 2023-07-01