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对六杆四面体单元组成的球面网壳结构的静力特性进行了模型试验研究.设计、制作了一个10m跨度的大型实物模型,测试了其在全跨加载和半跨加载两种工况下的静力特性,并与利用实际模型节点坐标建立的有限元模型计算结果进行对比,分析了误差产生的原因以及误差来源对模型静力特性产生影响的机理.测试和分析结果表明,模型的加工和安装精度对结构静力特性具有显著的影响,必须在实际工程中予以严格控制.
The static characteristics of the spherical reticulated shell composed of hexahedron tetrahedron are studied by model test. A large physical model with a span of 10m is designed and tested. It is tested under full loading and semi-loading The static characteristics of the model are compared with those of the finite element model established by the coordinates of the actual model nodes and the causes of the errors and the mechanism of the error sources affecting the static characteristics of the model are analyzed.The results of the test and analysis show that the processing of the model And installation accuracy have a significant impact on the static characteristics of the structure and must be strictly controlled in practical engineering.