Performance Evaluation of Perimeter Reinforced T-bar Type Suspended Ceiling with Steel-Panel using Shaking Table Test

내진설계가 적용된 금속마감패널 천장시스템의 진동대 실험을 통한 성능평가

In Korea, interest in the seismic design of non-structural elements was stimulated by the 2016 Gyeong-ju 2017 Po-hang earthquake. Among them, the suspended ceiling is a non-structural element that causes injury to person, most ceiling systems used in Korea do not have seismic details and do not meet the current seismic design standards. There is no standard for seismic design of the suspended ceiling in Korea, and the ASTM E580/E580M can be used for the seismic design. The ASTM E580/E580M introduces a seismic design method for SDC C, which performs design with molding width and end clearance, and SDC D, which performs design with braces and end fixing method, in ceiling systems for acoustical tile and lay-in Panels. In the present study, shaking table tests were performed on two types of steel-panel T-bar ceiling systems designed according to ASTM E580/E580M. The first specimen meets the frame end molding width requirements of SDC C detail, the second one meets the perimeter clip requirement of SDC D detail in ASCE7. The failure modes of steel-panel T-bar ceiling system with anti-falling clips, and the degrees of damage incurred by the ceiling system were evaluated. The failure modes were also compared with the results of non-seismic ceiling tests presented in the previous study, which details currently being constructed in Korea. Test results of seismic designed ceilings show that all the specimens meet the life safety level in Korea standard KDS 41 17 00.