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http://dx.doi.org/10.4334/JKCI.2010.22.3.357

Hysteretic Behavior of R/C Shear Wall with Various Lateral Reinforcements in Boundary Columns for Cyclic Lateral Load  

Seo, Soo-Yeon (Dept. of Architectural Engineering, Chungju National University)
Oh, Tae-Gun (Opus-Pearl Incorporation Structural Consulting Engineers)
Kim, Kyeong-Tae (B&K Engineering)
Yoon, Seong-Joe (Dept. of Architectural Engineering, Chungju National University)
Publication Information
Journal of the Korea Concrete Institute / v.22, no.3, 2010 , pp. 357-366 More about this Journal
Abstract
This paper presents experimental results about shear wall with various lateral reinforcement details in boundary elements. The research objective is to study the structural behavior of shear wall with boundary column confined by rectangular spiral hoops and headed cross ties developed to improve workability in the fabrication of boundary columns. These two details can be fabricated in a factory and put together on-site after being delivered so that the construction work may be reduced. Main parameters in the experimental study were the types of hoop and cross tie: rectangular spiral hoop and headed cross tie vs. standard hoop and cross tie with hook. Four half scaled shear wall specimens with babel shape were made and tested by applying horizontal cyclic load under constant axial force, 10% of nominal compressive strength of concrete. Based on the test result, it was shown that the shear wall with rectangular spiral hoop and headed cross tie in boundary columns has structural capacity compatible with conventional shear wall. The specimen SW-Hh which has bigger hoop bar and higher volumetric ratio of transverse reinforcements than other showed improved energy dissipating characteristic but it presented a rapid reduction of strength after peak point. The results indicates that, it is necessary to consider volumetric ratio of transverse reinforcements as well as hoop space in designing of shear wall with boundary columns for improved strength and ductility.
Keywords
boundary elements; shear wall; improvement of workability; rectangular spiral hoop; headed cross tie; cyclic load;
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