Static And Dynamic Performance Analysis Of The Large-Span Rhombic Spatial Truss

Based on the architectural scheme, a new type of the large-span rhombic spatial truss is adopted in the Suzhou Railway Station,which will get a wide range of applications in practical project since it has good mechanical properties. Mechanical properties research of the large-span rhombic spatial truss has become more and more attention to. A railway station of steel truss roof structure is taken as a research object in this article, and some aspects of static and dynamic performance and the temperature effect are covered.The main contents including:Firstly, The roof in fixed supprort and reaming pedestal both cases. Using ABAQUS finite element software analysis the roof structure. Get structure bearing the rods of the internal force distribution and truss the nodal displacements,and compared with roof structure under two kinds of bearings cases &springer distinction. Thus learning roof structure under two kinds of bearings under the condition of static performance.Secondly, In ABAQUS environment, the roof in fixed supprort and reaming pedestal both conditions. Through comparative study of roof structure in consistent temperature change under the influence of the overall internal forces caused by temperature, and node in a change in temperature produced displacement. Thus obtains temperature difference in different bearings when affect how big span lozenge space truss roof structure performance.Thirdly, Steel roof and concrete bearing the connection between the ways used respectively hinged and just answer, and for the steel truss roof structure conduct modal analysis.Get structure vibration frequency and vibration model, and use the time-history analysis response spectrum method of roof structure seismic performance were studied. The results indicated that,the frequency distribution is close,the participation of the higher-order vibration modes should be considered in seismic design course.The influence of the horizontal earthquake action (6 degrees) is relatively small,which dose not play control role.Finally, all researches in this article are concluded, some favorable conclusions are obtained and some questions need to be solved in future are pointed out.