Seismic Behaviour Study on Diagrid Tube- Core Tube Structures
Guo Weiliang1;Teng Jun1; Rong Baisheng2; Li Zuohua3;ZHANG Hao
1 Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China; 2. RBS Architectural Engineering Design Associates, Guangzhou 510170, China; 3. School of Civil Engineering, Dalian University of Technology, Dalian 116024, China
Abstract:Abstract: Diagrid tube structures have advantages on constructing high-rise buildings for their great rigidity and are built in and aboard, however their seismic behavior researches are limited. Models of concrete filled steel tube diagrid tube-concrete core tube structure were analyzed by Modal Pushover method using Perform-3D program. The structure plastic development process and the component yield order were summarized. The diagrid tube components yield path was researched and the reasons of force redistributions between inner and outer tubes were explained by analyzing the development of diagrid tube forces. The reason for structure lateral stiffness degradation was discussed based on the development process of diagrid and core tube lateral stiffness.