Seismic Reliability Assessment of Existing Reinforced Concrete Buildings

Fragility analysis of flat-slab structures

“…In recent studies, Ghobarah et al [21] and Elnashai et al [22] used statistical distributions to define the material uncertainty for the yield strength of steel. There is a consensus in terms of using lognormal and normal distributions to represent the material variability in the yield strength of steel with coefficient of variation (COV) ranging between 4% and 12%.…”

Identifying Significant Components of Structures for Seismic Performance Using FOSM Method

“…, <그림 1> 부재의 확률모델과 FOSM 방법을 이용한 구조물의 평가방법 Ghobarah and Aly (7) , Shinghal and Kiremidjian (8) 1995년 이후 성능기반 지진공학이 미국을 중심으로 발전 하기 시작하면서 (9) , 성능기반 지진공학의 방법론에 맞춘 연 구결과가 발표되었는데, 2000년 Porter 외 in. • 폭 넓은 지진하중의 크기의 대역에 걸쳐 2층의 기둥들 은 무시할 만큼 중요도가 작았다.…”

Probabilistic fiber element modeling of reinforced concrete structures

“…More recently, several researches were focused on probabilistic evaluation of RC frames. Chryssanthopoulos et al [3], Dymiotis et al [6], Ghobarah and Aly [9], and Singhal and Kiremidjian [24] recently proposed systematic ways of evaluating RC framed structures by considering the uncertainty of ground motions and the material variability. In addition, Ghobarah and Aly [9] accounted for uncertainties in member dimensions.…”

“…Chryssanthopoulos et al [3], Dymiotis et al [6], Ghobarah and Aly [9], and Singhal and Kiremidjian [24] recently proposed systematic ways of evaluating RC framed structures by considering the uncertainty of ground motions and the material variability. In addition, Ghobarah and Aly [9] accounted for uncertainties in member dimensions. However, few research efforts considered the spatial variability of random variables of RC frame members, 0045 which requires the discretization of the random field and the identification of the correlation characteristics of random variables.…”