基于非结构网格的风压分配方法

摘要

刚性模型测压风洞试验测试得到的测点风荷载一般无法直接用于结构抗风设计及风致响应计算。以结构表面风压测点作为控制点，通过多项式插值得到非结构网格并将测试得到的测点风荷载匹配至网格的节点和虚面上，以此作为计算分块风荷载、整体风荷载、节点风荷载及风致响应风荷载输入的依据。以某大跨度空间结构为例，说明了该方法的可行性、准确性和通用性。%The tap’s wind pressure obtained by rigid model pressure test in wind tunnel is not directly used to wind-resistant design and wind induced response estimation. The wind loads on the grid-node and grid-sur-face, generated by matching the tap’s wind pressure with the unstructured-grid-node and unstructured-grid-node from the results of polynomial interpolation, are used to calculate the local wind loads, total wind loads, node wind forces and wind loads for estimating the responses. The feasibility, accuracy and generality of this method is proved in a case of a long-span structure.