Seismic performance of cylindrical latticed-intersected-three-dimensional-beam-system reticulated mega-structure with single-layer latticed-intersected-cylindrical-shell substructures |
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| Institution: | 1. Department of Structural Mechanics, ?ód? University of Technology, Al. Politechniki 6, 90-924 ?ód?, Poland;2. Department of Structural Mechanics, ?ód? University of Technology, Al. Politechniki 6, 90-924 ?ód?, Poland;3. Department of Structural Mechanics, ?ód? University of Technology, Al. Politechniki 6, 90-924 ?ód?, Poland;1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China;2. Department of Civil Engineering, Tianjin University, Tianjin 300072, China;3. Tianjin University Research Institute of Architectural Design and Urban Planning, Tianjin University, Tianjin 300072, China;1. School of Civil Engineering, Harbin Institute of Technology, 202 Haihe Road, Nangang District, Harbin 150090, PR China;2. School of Civil Engineering, Guangzhou University, Guangzhou 510006, PR China |
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| Abstract: | This paper is focused on the research of seismic performance of cylindrical latticed-intersected-three-dimensional-beam-system (LITDBS) reticulated mega-structure with single-layer latticed-intersected-cylindrical-shell (LICS) substructures by time history method accounting for geometrical nonlinearity. The distribution laws of the dynamic internal forces and those of the ratios of the dynamic to static internal forces of members in this innovative structure are first studied. The behaviors of the structure under different multi-component seismic actions are analyzed, and the reasonable components of the seismic action that should be considered in design are thus obtained. Then taking the maximum dynamic internal force of the structure as the index, a series of parametric analyses are carried out, and the suitable values of several key form parameters are recommended. Additionally, the results by the response spectrum method with those by the time history method are compared, which indicates that the former is not on the safe side. Therefore, the mode-superposition response spectrum method can only be used to do preliminary seismic design of this kind of structure, and the results must be checked by the time history method at the end. |
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| Keywords: | Cylindrical LITDBS reticulated mega-structure Latticed-intersected-cylindrical-shell (LICS) substructures Seismic performances Time history method Multi-component seismic actions |
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