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누엔반박 ( Nguyen Van Bac ),트란쾅휘 ( Tran Quang Huy ),강충현 ( Kang Choonghyun ),김종우 ( Kim Jong Woo ),허정원 ( Huh Jungwon ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.2
Uplift phenomenon of container cranes occurred during the past earthquakes. Therefore, the evaluation of the potential uplift of the container cranes is an important task when the demand for trade is increasing. The objective of this study is to investigate the probability of the uplift occurrence of the container crane subjected to a wide range of earthquake intensity. The uplift results are then fitted to the log-normal cumulative distribution function (CDF).
누엔반박 ( Nguyen Van Bac ),임재성 ( Lim Jaesung ),강충현 ( Kang Choonghyun ),트란쾅휘 ( Tran Quang Huy ),허정원 ( Huh Jungwon ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.1
The dynamic behaviour of container crane under seismic loading is a complex issue, especially for assessing uplift. The pin support is commonly used to model the contact between crane’s legs and the ground/rails in low seismicity area. However, the behaviour of the structure is quite different under high seismic intensity because the crane’s wheels are not fixed to the rails in operation. In this study, therefore, a 3-D finite element (FE) model was simulated with gap elements to consider the uplift behavior. In addition, the vertical reaction of the crane’s legs were investigated as well.
콘크리트 구조물의 지표면 결함 검출을 위한 Pulsed Phase Thermography의 정량적 접근
트란쾅휘 ( Tran Quang Huy ),강충현 ( Kang Choongh ),한동엽 ( Dongyeob ),누엔반박 ( Nguyen Van Bac ),허정원 ( Huh Jungwon ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.1
In this study, an experimental study of Impulse Thermography was carried out on a concrete specimen with in-placed artificial defects at different depths and dimensions. Then, all the data were processed by Pulse Phase Thermography technique by performing Fast Fourier Transformation. The results were compared with the absolute contrast method.