Title:
Seismic Performance of Flat Plate Structure with Steel Capital
Author(s):
Lu Wang, Yantao Xue, Cuikun Wang, and Xilin Lu
Publication:
Structural Journal
Volume:
116
Issue:
2
Appears on pages(s):
221-232
Keywords:
bearing capacity; conventional concrete capital; flat plate structure; hysteretic performance; slab-column connection; steel capital; stiffness
DOI:
10.14359/51712279
Date:
3/1/2019
Abstract:
The flat plate system, as a popular structure in concrete buildings, still requires improvement in slab-column connections, which are the most vulnerable areas from the point of view of safety. Over the last few decades, various methods of shear reinforcement have evolved around the world. However, the hysteretic performance and bearing capacity of those methods may not provide absolute guarantees. The conventional concrete capital referred to herein resembles a truncated pyramid, which has the disadvantage of requiring a large space. This paper proposes a new technique—steel capital, which applies steel plates, channel steel, and shear bolts. An experiment of three specimens—one with conventional concrete capital, one with steel capital, and one control specimen—was conducted. The failure mode, hysteretic loops, skeleton curve, bearing capacity, stiffness, ductility, and deformation of the three specimens are presented in this paper. The results indicate that the steel capital can effectively increase the bearing capacity and stiffness of the slab-column structure. Steel capital should be considered in the strengthening and design of slab-column structures.
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