考慮舒適度涌溪人行玻璃懸索橋設(shè)計(jì)研究
[Abstract]:Simple pedestrian suspension bridge is favored by its beautiful appearance, simple structure, clear force and low cost. Its adaptability to geological topography is particularly strong, and the characteristics of high strength wire rope tensile strength are fully utilized. Long-span bridges can be built without the need to build high cable towers. Pedestrian suspension bridge has a good application prospect, so it is often used in mountain areas and tourist attractions. This paper first introduces the existing research results of pedestrian suspension bridge, then expounds the general basic calculation theory, finite element method, comfort evaluation method and the basic knowledge of optimization design theory of suspension bridge, and then uses the parametric design language of APDL in ANSYS to model the Yongxi pedestrian glass cable bridge, and then carries on the static and dynamic analysis to the suspension bridge based on the model. In this paper, taking the Yongxi pedestrian glass suspension bridge as the engineering background, some important parameters that affect the mechanical characteristics of the pedestrian suspension bridge are changed in the code, such as the rise-span ratio of the main cable, the span ratio, the glass size and so on, to compare and analyze the static and dynamic calculation results, to comprehensively study the mechanical characteristics of the pedestrian glass suspension bridge, and to study and summarize some mechanical properties of the pedestrian suspension bridge. In order to guide engineering practice. The advantages and disadvantages of reinforced concrete, glass and steel plate materials are analyzed. Based on Swiss and British codes, the comfort of Yongxi cable bridge is analyzed. Based on the nonlinear finite element analysis function and optimization design function of ANSYS software, the reasonable optimization method is used to optimize the project, and the minimum deformation of the main beam of suspension bridge is taken as the objective function. Firstly, the zero-order method is used, and then the first-order method is adopted based on the zero-order method, and more accurate results are obtained. By using finite element software, the optimized results are compared and analyzed, including static analysis, dynamic analysis and comfort analysis, so that the suspension bridge can reach a stable and comfortable state.
【學(xué)位授予單位】:福建農(nóng)林大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:U448.25
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