New model for shear failure of RC interior beam-column connections

被引：94
|
作者：
Shiohara, H [1 ]
机构：
[1] Univ Tokyo, Grad Sch Engn, Dept Arch, Bunkyo Ku, Tokyo 1138656, Japan
来源：
JOURNAL OF STRUCTURAL ENGINEERING-ASCE | 2001年 / 127卷 / 02期
关键词：
Beams and girders - Codes (standards) - Columns (structural) - Concrete testing - Earthquake resistance - Mathematical models - Reinforced concrete;
D O I：
10.1061/(ASCE)0733-9445(2001)127:2(152)
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The primary objective of this study is to point out an irrationality in the existing models for shear failure, adopted by current design codes for reinforced concrete (RC) monolithic interior beam-column connections. To investigate this issue, 20 tests of RC interior beam-column connections exhibiting shear failure are reexamined. Test data indicated that joint shear stress is not proportional to story shear. Joint shear increased until the end of the: test in most specimens, even if the joint shear deformation apparently increased and the story shear decreased. Moment in section at the beam end decreased due to a reduction in distance between stress resultants at the column face. The cause of the deterioration of story shear is shown to originate from a finite upper limit of anchorage capacity of beam longitudinal reinforcements passing through the beam-column connection. A new mathematical model is introduced for shear failure of the beam-column connection to reflect this behavior.
引用
收藏
页码：152 / 160
页数：9
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