The Analysis Of Lateral Braces For Workshop Columns Press-bend Member

With the developing of the steel-structure building in china , the steel-structure workshop is widely used due to its wide span and light weight. As the important part of steel-structure workshop, the study of the lateral brace for columns is significant.This paper is concerned with the analysis of lateral braces for workshop columns press-bend member. In this paper, lateral braces is lateral horizon center braces. In many former references, the study of lateral horizon center braces is rarely presented. Therefore, the study of this paper is necessary.This paper study the lateral braces by the analysis of classic theory and ANSYS limited member, and presents the design method of non-full braces. Full braces is which stiffness and strength could let the lateral buckling critical force to max. When the stiffness and strength of lateral braces is larger than this of full braces, the lateral buckling critical force could not be improve. Compared with full braces, the stiffness and strength of non-full braces could not let the lateral buckling critical force to max, which could achieve the requirement of design. When the stiffness and strength of lateral braces is larger than this of non-full braces, the lateral buckling critical force could be improve a little. Sometimes the stiffness and strength of full braces is so big that the design of full braces is difficult. Therefore, in this case the design of non-full braces is more easy and feasible than this of full braces.This paper investigates and presents the design methods for lateral braces between equal spaced columns reducing the effective lengths of the columns to half. It is found that initial brace deflections have significant effect on the stiffnessand strength requirement which are interdependent; and there is a very unfavorable interaction between lateral braces and columns imperfections.The calculating simplified model of this paper is not same with that of the former references. Although this model is correspondingly conform to actual thing, the formula of lateral braces will be applied to practice after it is proved by experimentation.