Study On The Square Steel Tube Rigid Column-H Beam Connection Point Of Seismic Performance

As an important part of the safety performance of the node structure of the overall framework of the system,its stability will affect the whole frame structure system,and because of its complex structure and stress,has been the focus of research of seismic performance of frame structure.And because of our steel productivity improvement,application proportion of steel structure in practical work has been improved concrete filled steel tubular structure.Because of its good stability,high bearing capacity is more and more widely used in building structures.The study on seismic performance of rectangular steel tube column and steel beam H mainly including diaphragm joints and outer diaphragm joints.Therefore,based on reading a lot of papers and research reports on the proposed the new joint rigid square steel tubular column and steel beam H connection,namely through diaphragms.Through the ABAQUS software and set up the model for computing and processing,the results of several models The seismic performance evaluation index is studied,and the seismic performance of the new type of joints is compared with the traditional node and the weakened node:(1)Using ABAQUS finite element software,according to the relevant regulations and requirements,through to the diaphragm thickness for the three-dimensional finite element model of five variables to establish new joint research group,changes in size of the piercing steel plate impact on the seismic performance of the model changes.(2)According to the finite element simulation software to model the processing results through diaphragm thickness for the variables on the new node stress nephogram,hysteretic curve,skeleton curve,ductility,stiffness degradation and energy dissipation capacity chart table.The trend of research on the size of piercing steel plate in a new node change on its seismic performance.(3)Comparing the new node,establish the traditional node and the corresponding node,and the traditional at the same loading and circulation system were analyzed,and the performance of the new seismic node by comparing seismic performance results compared to the traditional node node model is improved.(4)To achieve the "strong column and weak beam,strong joint and weak seismic" design component.The design of beam end weakened zone,establishing weakening type node,by comparing the seismic performance of joints and weaken the index model of nodes,setting of the seismic performance of the area before and after the changes weaken.