A High-Performance Quadrilateral Flat Shell Element for Seismic Collapse Simulation of Tall Buildings and Its Implementation in OpenSees |
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| Authors: | Xinzheng Lu Yuan Tian Song Cen Hong Guan Linlin Xie Lisha Wang |
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| Affiliation: | 1. Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing, P.R. China;2. Beijing Engineering Research Center of Steel and Concrete Composite Structures, Tsinghua University, Beijing, China;3. Department of Engineering Mechanics, School of Aerospace Engineering, Tsinghua University, Beijing, P.R. China;4. Griffith School of Engineering, Griffith University Gold Coast Campus, Queensland, Australia;5. School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing, P.R. China |
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| Abstract: | Shear walls are important lateral force-resistant components of tall buildings. Hence, a reliable numerical model that can accurately represent the mechanical characteristics and large deformations of shear walls is critical for realistic collapse simulation of tall buildings. Based on the theory of generalized conforming element, a high-performance quadrilateral flat shell element, NLDKGQ, accounting for the large deformation using the updated Lagrangian formulation, is proposed herein and implemented in OpenSees. The reliability of NLDKGQ is validated using classical benchmark problems and reinforced concrete specimens. In addition, its capability in simulating the collapse of a tall building is also demonstrated. |
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| Keywords: | Flat Shell Element OpenSees Shear Wall Large Deformation Collapse Simulation |
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