|Table of Contents|

Seismic Behavior of Square Tube Confined Steel-reinforced Concrete Column-RC Ring Beam Joint(PDF)

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

Issue:
2019年02期
Page:
84-91
Research Field:
Publishing date:

Info

Title:
Seismic Behavior of Square Tube Confined Steel-reinforced Concrete Column-RC Ring Beam Joint
Author(s):
NIE Shao-feng1 YE Meng-na1 WU Yang-fan1 DING Wu-xia2 ZHU Ji-zhao1
(1. School of Civil Engineering, Chang’an University, Xi’an 710061, Shaanxi, China; 2. Anar Group Incorporated Company, Beijing 100079, China)
Keywords:
square tube confined steel-reinforced concrete column seismic behavior RC ring beam joint low cyclic loading
PACS:
TU398
DOI:
-
Abstract:
In order to study the seismic behavior of square tube confined steel-reinforced concrete column-RC ring beam joint, the finite element model of the joint was established by using finite element analysis software ABAQUS. The correctness of the finite element calculation results was verified by the comparative analyses of circular steel tube confined steel-reinforced concrete column-RC ring beam joint in the existing tests. Then the numerical analyses of the mechanical behavior of square tube confined steel-reinforced concrete column-RC ring beam joint was carried out. The failure mode, hysteresis curve, skeleton curve and joint ductility of the joints under low cyclic loading were studied. The effects of inner steel ratio of section, axial compression ratio and reinforcement ratio of ring beam on the seismic behavior of the joints were also investigated. The results show that the hysteretic curves of square tube confined steel-reinforced concrete column-RC ring beam joint is full and the joint has good seismic behavior. After setting the ring beam in the core area of node, the failure mode of the joint specimen is the plastic hinge failure at the end of beam. The ring beam has the protection effect obviously on the core area of the joint, and the joint satisfies the seismic design principles of “strong column and weak beam” and “strong-joint and weak-member”. With the decrease of the inner steel ratio of column and the reinforcement ratio of ring beam, the maximum load, ductility coefficient and seismic performance of joints decrease, and the strength degradation is accelerated. The axial compression ratio has great influence on the seismic behavior. If the axial compression ratio increases from 0.31 to 0.63, the ductility coefficient of the specimen is reduced from 4.14 to 2.12, and the decreasing amplitude of the maximum load is as high as 15.16%.

References:

References:
[1] ZHANG S M,LIU J P.Seismic Behavior and Strength of Square Tube Confined Reinforced-concrete(STRC)Columns[J].Journal of Constructional Steel Research,2007,63(9):1194-1207.
[2]周绪红,刘界鹏,张素梅.钢管约束型钢高强混凝土压弯构件的抗震性能研究[J].土木工程学报,2010,43(9):1-11.
ZHOU Xu-hong,LIU Jie-peng,ZHANG Su-mei.Seismic Behavior and Strength of Tubed SRC Beam-columns Filled with High Strength Concrete[J].China Civil Engineering Journal,2010,43(9):1-11.
[3]XIAO Y,TOMII M,SAKINO K.Experimental Study on Design Method to Prevent Shear Failure of Reinforced Concrete Short Circular Columns by Confining in Steel Tube[J].Transactions of Japan Concrete Institute,1986,8:535-542.
[4]ZHOU X,YAN B,LIU J.Behavior of Square Tubed Steel Reinforced-concrete(SRC)Columns Under Eccentric Compression[J].Thin-walled Structures,2015,91:129-138.
[5]LIU J P,ZHOU X H,GAN D.Effect of Friction on Axially Loaded Stub Circular Tubed Columns[J].Advances in Structural Engineering,2016,19(3):546-559.
[6]尧国皇,陈宜言,黄用军,等.新型钢管混凝土柱-钢筋混凝土梁节点抗震性能试验研究[J].工业建筑,2011,41(2):97-101,69.
YAO Guo-huang,CHEN Yi-yan,HUANG Yong-jun,et al.Experimental Study on Seismic Behavior of Joint of CFST Column-RC Beam[J].Industrial Construction,2011,41(2):97-101,69.
[7]蔡 健,杨 春,苏恒强.穿心钢筋暗牛腿式钢管混凝土柱节点试验研究[J].工业建筑,2000,30(3):61-64.
CAI Jian,YANG Chun,SU Heng-qiang.Experimental Study of Joints of CFST Column with Piercing Reinforcing Bar Hidden Bracket[J]. Industrial Construction,2000,30(3):61-64.
[8]金怀印,薛伟辰,周德源.RC梁-CCFST柱加强环式节点抗剪承载力计算分析[J].建筑科学与工程学报,2011,28(2):106-113
JIN Huai-yin,XUE Wei-chen,ZHOU De-yuan.Calculation and Analysis of Shear Capacity of Connection with Stiffening Rings Between RC Beam and CCFST Column[J].Journal of Architecture and Civil Engineering,2011,28(2):106-113.
[9]陈庆军,蔡 健,杨 平,等.节点区柱钢管不贯通式钢管混凝土柱-梁节点抗震性能[J].土木工程学报,2009,42(12):33-42.
CHEN Qing-jun,CAI Jian,YANG Ping,et al.Seismic Behavior of Concrete Filled Steel Tubular Column-beam Joints with Discontinuous Column Tubes[J].China Civil Engineering Journal,2009,42(12):33-42.
[10]HAN L H,QU H,TAO Z,et al.Experimental Behavior of Thin-walled Steel Tube Confined Concrete Column to RC Beam Joints Under Cyclic Loading[J].Thin-walled Structures,2009,47(8/9):847-857.
[11]ZHANG Y F,ZHAO J H,CAI C S.Seismic Behavior of Ring Beam Joints Between Concrete-filled Twin Steel Tubes Columns and Reinforced Concrete Beams[J].Engineering Structures,2012,39:1-10.
[12]张冬芳,张玉芬,赵均海,等.复式钢管混凝土外钢管不连通环梁节点有限元分析[J].建筑结构,2013,43(5):39-44.
ZHANG Dong-fang,ZHANG Yu-fen,ZHAO Jun-hai,et al.Finite Element Analysis on the Ring Beam Joint with Discontinuous Outer Tube Between Composite CFST and RC Beams[J].Building Structure,2013,43(5):39-44.
[13]PAN P,LIN X,LAM A,et al.Monotonic Loading Tests of Ring-beam Connections for Steel Reinforced Concrete Columns and RC Beams[J].Journal of Structural Engineering,2014,140(4):04013092.
[14]GB 50936—2014,钢管混凝土结构技术规范[S].
GB 50936—2014,Technical Code for Concrete Filled Steel Tubular Structures[S].
[15]GB 50011—2010,建筑抗震设计规范[S].
GB 50011—2010,Code for Seismic Design of Buildings[S].
[16]丁武侠.RC梁-圆钢管约束型钢混凝土柱环梁节点抗震性能试验研究[D].西安:长安大学,2018.
DING Wu-xia.Experimental Study on Seismic Performance of Ring Beam Joint with RC Beam and Circular Tubed Steel Reinforced Concrete(SRC)Column[D].Xi’an:Chang’an University,2018.
[17]甘 丹.钢管约束混凝土短柱的静力性能和抗震性能研究[D].兰州:兰州大学,2012.
GAN Dan.Static and Seismic Behavior of Steel Tube Confined Concrete Short Columns[D].Lanzhou:Lanzhou University,2012.
[18]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.
ZHU Bo-long.Earthquake-resistance Test of Structures[M].Beijing:Seismological Press,1989.

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Last Update: 2019-03-27