Analysis on punching shear behavior of an innovative connection between T-shaped steel reinforced concrete column and reinforced concrete slab

被引：0
|
作者：
Xue J. [1 ,2 ]
Zhang W. [1 ]
Zhang C. [1 ]
Zhao F. [1 ]
机构：
[1] School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an
[2] Key Lab of Structural Engineering and Earthquake Resistance, the Ministry of Education, Xi'an University of Architecture and Technology, Xi'an
来源：
Tumu Gongcheng Xuebao/China Civil Engineering Journal | 2023年 / 56卷 / 06期
关键词：
finite element analysis; limb height-to-thickness ratio; punching bearing capacity; slab-column connection; T-shaped column;
D O I：
10.15951/j.tmgcxb.22010045
中图分类号：
学科分类号：
摘要：
To study the punching performance of reinforced concrete (RC) slab-T-shaped steel reinforced concrete (SRC) column connection, the punching failure tests were carried out on three RC slab-T-shaped SRC column connections and two RC slab-square SRC column connections under vertical loads. The investigated test variables include slab thickness, cross-sectional shape of column and column cap. The test results show that all the specimens have weak energy dissipation capacity and are characterized by brittle punching failure. The change of column cross-sectional shape may lead to more complex distribution of punching shear stress and stress concentration. Increasing slab thickness and setting column cap can effectively improve the punching bearing capacity and residual bearing capacity of the slab-column connections. In addition, the ABAQUS software is used for numerical simulation analysis. The numerical results and experimental results have a good agreement in load-displacement curves, concrete strain and failure mode. The parameter analysis results show that the steel in the column can resist and improve the residual bearing capacity of the slab-column connections. The increase of steel ratio, however, does not significantly increase the residual bearing capacity. The effect of the limb height-to-thickness ratio of the T-shaped column on the punching bearing capacity of the connection can be ignored. The punching shear capacity of the connection increases with the increase of the plane size and height of the column cap, but the effect of the height of the column cap on the punching shear capacity is more obvious. © 2023 Editorial Office of China Civil Engineering Journal. All rights reserved.
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页码：1 / 13
页数：12
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