Effects of Boundary Condition Models on the Seismic Responses of a Container Crane
| Autor: | Van Bac Nguyen, Choonghyun Kang, Quang Huy Tran, Jin-Hee Ahn, Jungwon Huh |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Derailment
derailment ground motion 0211 other engineering and technologies Base (geometry) 020101 civil engineering 02 engineering and technology Spectral acceleration time history analysis lcsh:Technology container crane 0201 civil engineering total base shear lcsh:Chemistry portal drift General Materials Science Boundary value problem Instrumentation lcsh:QH301-705.5 Container crane 021101 geological & geomatics engineering Fluid Flow and Transfer Processes business.industry lcsh:T Process Chemistry and Technology General Engineering Structural engineering boundary condition lcsh:QC1-999 Computer Science Applications Shear (sheet metal) spectral acceleration lcsh:Biology (General) lcsh:QD1-999 uplift lcsh:TA1-2040 Container (abstract data type) friction contact business lcsh:Engineering (General). Civil engineering (General) Intensity (heat transfer) Geology lcsh:Physics |
| Zdroj: | Applied Sciences, Vol 9, Iss 2, p 241 (2019) Applied Sciences Volume 9 Issue 2 |
| ISSN: | 2076-3417 |
| Popis: | In recent years, several large earthquakes have caused the collapse of container cranes, which have resulted in halting of freighting, and significantly affected the economy. Some reports are concerned the uplift and derailment events of crane legs, and the collapse of the crane itself. In this study, the effects of different boundary conditions used in the numerical method are investigated for a container crane under seismic excitation. Three different boundary conditions are considered in terms of the connection of the crane&rsquo s legs (wheels) and the ground (rails), namely pin support (PIN), gap element (GAP), and Friction contact (FC) elements, by using the SAP2000 program for a typical container crane. Then, time history dynamic analyses are conducted using nine recorded ground motions. Dynamic behaviors of the container crane are studied in terms of the total base shear, portal drift, and relative displacement of legs, by investigating the three types of base boundary conditions. The results of the study show that when the intensity of earthquakes is large enough to create uplift and derailment events, the selection of the boundary condition model considerably affects the dynamic responses of the container crane. In addition, when uplift and derailment of the crane occur, the FC support condition is the most compatible with the real behavior of the crane. On the other hand, under low seismic excitation, there is no significant difference of the crane behavior according to the choice of boundary condition model. |
| Databáze: | OpenAIRE |
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