Cyclic Loading Tests for Prefabricated Composite Columns Using Steel Angle and Reinforcing Bar

Abstract

PSRC composite column is a concrete encased steel angle column. In the PSRC composite column, the steel angles placed at the corner of the cross-section resists bending moment and compression load. In the present study, using the performance criteria in KBC 2009, cyclic lateral loading test was performed for PSRC columns to verify the seismic performance. The test parameters were the column type, the use of continuous hoop, and the use of studs for steel angle. 2/3 scale specimens of a conventional composite column and three PSRC columns were tested. The test results showed that the load-carrying capacity predicted by KBC 2009 correlated well with the test results. The specimens also exhibited good deformation and energy dissipation capacities. After concrete cover spalling under cyclic loading, the load-carrying capacity were decreased by buckling of longitudinal bars and steel angles. When continuous hoop was used, the deformability of the PSRC column was improved, preventing early buckling of the steel angles.

Construction Application of a Newly Developed Form-Latticed Prefabricated Steel Reinforced Concrete Column

“…특히 골조공사는 프로젝트의 전체 공사비 및 공사기간에서 차지하는 비율이 매우 높으 하다 [4]. 이에 Hwang et al [3], Eom et al [5] 등은 H형강 대신 앵글을 사용하는 PSRC 합성기둥(Prefabricated Steel Reinforced Concrete Composite Column)을 개발 하였으며, 이는 기존의 SRC 기둥에 비해 휨에 대한 강성 및 강도가 더 높으며 [5], 공장에서 앵글과 철근을 조립하여 일체화하기 때문에 현장에서의 철근작업이 생략되고, 기둥 -보 접합부의 일체화가 가능하다는 장점이 있다 [3]. 키워드 : Form-LPSRC, 골조공사, 현장 적용…”