|Table of Contents|

Failure mechanism and seismic behavior of interior joints with different depth beams(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2010年04期
Page:
60-65
Research Field:
Publishing date:
2010-08-20

Info

Title:
Failure mechanism and seismic behavior of interior joints with different depth beams
Author(s):
PAN Yuan;  XING Guo-hua;  WU Tao;  LIU Bo-quan
School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China
Keywords:
bridge engineering;  interior joint;  seismic behavior;  failure mechanism
PACS:
TU375.4
DOI:
-
Abstract:
Four specimens of abnormal interior joints were tested under reversed cyclic loading. The experimental study was conducted that focused on the effect of hoop percentage and axial compression ratio on seismic behavior of abnormal joints. The test results indicated that the first cracks appeare in the minor core(determined by the low beam and the top column), and the final failure appeare in the large core(determined by the high beam and the bottom column). The critical crack load is quite nearly with the ultimate load of abnormal joints, and the seismic behavior of the specimens are not influenced by the axial compression ratio but influenced by the joint hoop percentage. With the increasing of joint hoop percentage, the shear strength of the beam-column joint subassemblage increases, the width and space of diagonal cracks become smaller than that of the control specimens. Based on the experimental study, an equivalent strut mechanism for abnormal joint is put forward, and it can be served as a basis for further study on mechanical properties of abnormal beam-column joint. 2 tabs, 8 figs, 10 refs.

References:

[1] GB 50010—2002,混凝土结构设计规范[S].
[2]JGJ 101—96,建筑抗震试验方法规程[S].
[3]框架节点专题研究组.低周反复荷载作用下钢筋混凝土框架梁柱节点核心区抗剪强度的试验研究[J].建筑结构学报,1983,4(6):1-17. Research Group on Frame Joints.Shear strength of reinforced concrete beam-column joints under low reversed cyclic loading[J].Journal of Building Structures,1983,4(6):1-17.
[4]余 琼,吕西林,陆洲导.框架节点反复荷载下的受力性能研究[J].同济大学学报:自然科学版,2004,32(10):1376-1381. YU Qiong,LU Xi-lin, LU Zhou-dao.Research on frame's joint property under low frequency reversed load [J].Journal of Tongji University:Natural Science,2004,32(10):1376-1381.
[5]叶列平,王宇航.中、美规范钢筋混凝土梁斜截面受剪承载力的计算对比[J].建筑科学与工程学报,2008,25(1):88-95. YE Lie-ping,WANG Yu-hang.Calculation and comparison of shear strength of RC beams between Chinese and American codes [J].Journal of Architecture and Civil Engineering,2008,25(1):88-95.
[6]Paulay T.Equilibrium criteria for reinforced concrete beam column joints[J].ACI Structural Journal,1989,86(6):635-643.
[7]Kim J,LaFave J M.Key influence parameters for the joint shear behavior of reinforced concrete beam-column connections [J].Engineering Structures,2007,29(10):2523-2539.
[8]Pantazopoulou S J,Bonacci J.Consideration of questions about beam-column joints[J].ACI Structural Journal,1992,89(1):27-36.
[9]吴 涛,刘伯权,邢国华,等.RC框架变梁变柱中节点抗裂性能试验[J].长安大学学报:自然科学版,2009,29(4):77-81. WU Tao,LIU Bo-quan,XING Guo-hua,et al.Crack resistance test of interior joints with abrupt reduction in beam and column section in reinforced concrete frame[J].Journal of Chang'an University:Natural Science Edition,2009,29(4):77-81.
[10]陈招平,董 平,黄丽婷.高层建筑地震反应的TLD振动控制[J].建筑科学与工程学报,2008,25(1):122-126. CHEN Zhao-ping,DONG Ping,HUANG Li-ting.TLD vibrational controlling for seismic response of high-rise building[J].Journal of Architecture and Civil Engineering,2008,25(1):122-126.

Memo

Memo:
-
Last Update: 2010-08-20