This study proposed a simplified finite element analysis procedure for designing the nonstructural masonry wall in the out-of-plane direction. The proposed method is a two-step elastic analysis procedure by bilinearizing the behavior of the masonry wall. The first step analysis was conducted with initial stiffness representing the behavior up to the effective-yield point, and the second step analysis was conducted with post-yield stiffness. In addition, the orthotropic material property of the masonry was considered in the FE analysis. The maximum load was estimated as the sum of the maximum loads in the first and second step analyses. The maximum load was converted into the moment coefficients and compared with those from the yield line method applied in Eurocode 6. The moment coefficients calculated through the proposed procedure showed a good match with those from the yield line method with less than 6% differences.

Simple 3, 10, and 30-story buildings with a nonstructural element which is located at roof or near the middle of the building height are selected. Based on 2009 Korean Building Code, the seismic design force applied at the nonstructural element is evaluated. Response spectrum analysis is conducted with the design response acceleration spectrum of 2009 Korean Building Code and the analytical response is compared with the seismic design force from the Code. Furthermore, an artificial earthquake based on Korean design response acceleration spectrum and the 50% intensity of El Centro earthquake, which can be considered as the maximum future earthquake possibly occurring in Korea, are selected to conduct time history analysis. When the period of the nonstructural element is shorter than 0.06 second or longer than that of the 1st period of each building, the Code equations of seismic design force for nonstructural element seems to be appropriate. However, the period of the nonstructural element is close to the one of the building's higher mode periods including the 1st period, seismic force of the nonstructural element might exceed the Code specified seismic design force.

장주기 성분의 지진파는 주로 일반적인 구조성 지진과 화산대의 화산폭발로 인한 화산성 지진이 대표적이며, 국내의 경우 일본에서 발생한 대규모의 지진에 의한 부산 해운대의 피해와 최근 폭발 가능성이 제기되는 백두산 화산폭발로 인한 화산성 지진으로 인한 서울 및 인천 송도지역의 피해가 예측되며, 이 지역들은 고층건물의 밀집지역이라는 점에 대하여 장주기 성분 지진에 취약한 고층건물들의 방재대책이 시급한 실정이다. 실제로 최근에 Tohoku(M9.1 2011, Japan)지진으로 인하여 장주기 성분의 지진파가 발생하였으며, 진원지에서 약 400km 정도의 거리에 있는 고층건물들의 비구조재에 대한 피해가 보고되었으며, 이를 계기로 비구조재에 관한 내진설계에 대한 연구도 활발히 진행되고 있다. 따라서 우리나라의 경우에도 장주기 성분의 지진파에 의한 고층 건물의 피해를 고려하여 고층건물 내의 비구조재 손상을 평가하기 위하여 단주기 성분 지진파 및 장주기 성분 지진파를 적용하여 그에 따른 시험체의 층간변위 및 가속도에 인한 피해를 예측을 위한 실험을 실행하였으며, 그에 따른 고층건물 내의 비구조재의 손상을 분석하였다.