Seismic behavior simulation of high-rise core tube structures based on an accurate and efficient element for reinforced concrete coupling beams
Ding Ran 1Tao Muxuan 1,2Nie Jianguo 3
1. Key Laboratory of Civil Engineering Safety and Durability of the Ministry of Education, Tsinghua University, Beijing 100084, China
2. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China
3. Beijing Engineering Research Center of Steel and Concrete Composite Structures, Tsinghua University, Beijing 100084, China
Reinforced concrete coupled shear walls and core tubes have been widely used in multi-story and high-rise structural systems. Based on the previously developed fiber beam-column element including nonlinear shear effects for reinforced concrete coupling beam, a new analysis model is proposed for the coupled wall by combining it with the conventional fiber beam-column element and layered shell element. The model is efficient, accurate and convenient, which is applied in the general finite element package MSC.MARC(2007r1). The proposed coupling beam element, layered shell element and conventional fiber beam-column element were used to model the coupling beam, shear wall and the boundary confining column, respectively. The numerical model for the coupled wall was established and verified by experimental results. Then the model was applied to the seismic analysis of a 31-story high core tube structure. The seismic behavior of coupling beams were intensively analyzed and the model was compared to the model with layered shell element. The proposed analysis model of coupled wall and core tube provides a new tool for the nonlinear analysis of multi-story and high-rise structures based on general finite element software.
基于高效精细化连梁计算单元的高层结构核心筒地震行为模拟[J]. 土木工程学报, 2016, 49(S2): 79-84.
Ding Ran Tao Muxuan Nie Jianguo. Seismic behavior simulation of high-rise core tube structures based on an accurate and efficient element for reinforced concrete coupling beams. 土木工程学报, 2016, 49(S2): 79-84.
