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随着桥梁跨径的增大 ,桥梁区域内风速分布的非均匀性将逐渐加剧 ,将会对大跨径桥梁的空气静力和动力行为产生重要影响。采用风速空间分布的计算模型 ,考虑结构以及作用在结构上的空气力随结构变形的非线性变化影响 ,建立了考虑风速空间分布非均匀性的结构空气静力和动力非线性分析方法。运用该方法 ,对某悬索桥进行了参数分析和研究 ,揭示了风速空间分布非均匀性对大跨径桥梁空气静力和动力行为影响的机理和规律
As bridge span increases, the heterogeneity of wind speed distribution in the bridge area will be gradually aggravated, which will have an important impact on the aerostatic and dynamic behavior of long-span bridges. Based on the computational model of wind speed distribution and considering the influence of the structure and the air force acting on the structure with the nonlinear variation of the structural deformation, a nonlinear aerostatic and dynamic analysis method considering the spatial heterogeneity of wind speed is established. Using this method, the parameters of a suspension bridge are analyzed and studied, and the mechanism and regularity of the influence of the spatial heterogeneity of wind speed on the aerostatic and dynamic behavior of long-span bridges