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通过分析传统蒙古包结构各组成构件之间的实际接触,确定其在有限元软件ABAQUS中的类比接触,完成模型建立。然后通过模拟传统蒙古包结构在竖向荷载作用下各杆件及重要连接节点的受力形态及特点,并与结构在无里围绳作用时作对比。结果表明,传统蒙古包结构上部可视为由简支梁结构组成的棚顶,下部是由里围绳约环向束下S型曲杆相互铰接而成的网状结构。通过将竖向荷载均匀分布至杆件,由杆件之间相互约束和变形传递荷载并保持稳定,同时验证了里围绳对结构的必要性,完成对传统蒙古包结构合理性的论证。
By analyzing the actual contact between the components of the traditional yurt structure and determining the analogical contact in the finite element software ABAQUS, the establishment of the model was completed. Then, by comparing with the traditional Mongolian yurt structure under the action of vertical load, the force form and characteristics of each member and the important connection node are compared with those of the structure without the surrounding rope. The results show that the upper part of the traditional yurt structure can be regarded as a roof composed of simply supported beam structures, and the lower part is a mesh structure formed by hinged S - shaped curved rods around the surrounding cables. By distributing the vertical load evenly to the rod, the load is restrained and deformed by the rods and the load is stable, and the necessity of the surrounding rope is verified. The rationality of the structure of the traditional yurt is verified.