Effect of column brace on the static behavior of long-span steel structure

Through discussion of the provision of 'Code for Design of Steel Structures' about column brace arrangement,some inconsideration in current design and research of column brace was proposed.Considering the structural characteristics of workshop with special technique,the content of this paper was determined.By theoretical derivation and parameterized analysis of the pure brace stiffness and single column stiffness,the ratio of the stiffness of single column to pure brace was acquired.And then taking column distance,brace layer and member section into account,parameterized analysis was performed,and the regularity of the brace arrangement was obtained for the increase of the lateral stiffness and the decrease of the additional temperature force.Furthermore,the study was carried out on the influence of the brace location and column section on the structure under horizontal load and temperature action,and some useful results was obtained.Finally,the conclusion was used in the design of a long-span steel workshop structure.