Research On Mechanical Characteristics And Design Method Of The Staggered Truss System

The staggered truss system is a new structure type,the recent research indicates: the structure type has good structural characteristics and enjoy superiority over the others economically, which is easier to achieve large space with small bay. The new structure system abide by the strategy of "continuing development" and will be in great market demands. This thesis discusses some correlative problems about the structure system, associating Jiangsu Province Construction Department science project.In this dissertation, structural performance is firstly analyzed by means of the finite element analysis, many structure models are calculated by means of the finite element analysis, different structure parameters are compared and the push-over analysis is used to verify the advantage on elastoplastic performance.Based on the above results, the research is mainly focused on the lateral displacement stiffness under horizontal load, and second-order effect is considered, the simplified deformation formula of the staggered truss system is presented in this paper.The theory of effective length is used to the design of stabilization generally. In this paper, the simplified calculate formula of effective length factor come up in various cases. The structure system will not serve normally without reliable shear connections. Simplified design method of shear connections is studied based on composite beam, a new arrange method of shear connector is put forward, and is verified by means of the non-linear finite element program "ANSYS".Furthermore, A simulation project is calculated by the simplified calculate formula.