Nonlinear Finite Element Analysis And Experimental Research Of F Type Steel-Frame Structure In New Bearing-Insertion Form

In company with the rapid growth of our national highway and in cities large and medium sized road, traffic signs are applied to enormous quantity at the present stage. As well as it, development objective of traffic signs is doing utmost to save in material, be beautiful and environment-friendly, so optimization design in it have huge social need and applicable prospect. This paper has analysis on F type steel-frame structure in bearing-insertion type including three aspects: basic theory of mechanics, model experiment and finite element .It follows that some useful conclusion to optimize this structure. In aspect of basic theory: based on structural mechanics of thin-walled bar, using the calculation method of limit state basing on the probability theory, we can obtain strength level and stiffness level of researched object when bearing main load (wind load); in aspect of experiment: experimenting medium-sized prototype structure with load test simulating wind load, we can obtain distortion level, stress level and tensility level of researched object; in aspect of finite element analysis: modeling the entity of the research object by making use of FEA software, and brings out the crucial point of the force to accurately analyze its holistic stress field and deformation value. According to the above analytic result of three aspects, checking and evaluating various properties of researched object, we can offer suggestions for choose the right size of beam and the overall design optimization.