Analysis And Research On Mechanical Performance Of Large Span Lattice Steel Frame Structure

In recent year,the large-span steel frame structure is very rapidly developed,the structure is more and more complicated,and the scale of it’s use is also expanding.Among them,the large-span lattice-type steel frame structure is a more representative of a structural form,light,high strength and other performance of steel can be maximize exerted,it is a more reasonable form,its beautiful The spatial form,the reasonable force distribution,the lower the amount of steel and so on.As an important form of structure,Large span lattice steel frame structure often use in the construction projects which has a higher demand for a large space,especially in various venues and other public buildings.Because of the complex structure of large-span lattice-type steel frame structure,it belongs to many statically indeterminate structures,and there are many influencing factors in the process of use stage.There are seldom research on the mechanical properties and deformation laws of structures under various working conditions.Therefore,the use of appropriate methods to analyze the mechanical properties of the use of the stage has become an important issue,and also great significance on the design of this form of structure.In this paper,the frame structure of the large-span lattice-type steel frame in the central J-block of Suzhou is taken as the object of study.The rationality of the lattice-structured steel frame scheme in the large span structure is demonstrated by comparing with the structural scheme of the real The At the same time,the finite element analysis software SAP2000 was used to establish the corresponding structural model.Under different working conditions,the force performance of the steel frame structure was analyzed,and the internal force and deformation distribution of the large span lattice structure were studied.And choose the framework of the larger force,with the beam and column nodes as the research object,through the finite element software analysis of different nodes in the form of the node on the stress distribution of the impact.Some suggestion will put forward on the design of large span lattice steel frame on the basis of the above research.