摘要:世博轴阳光谷单层网格的节点数量大，杆件空间角度不同，各杆件在节点处存在高差与错边，导致各节点相似却不相同的特点。人工进行深化设计极易出错且很难校核和发现错误。本文以世博轴阳光谷建设为依托，针对复杂空间结构玻璃幕墙的连接构造和矩形管单层网格实体造型问题进行了研究。以“节点相邻面法线合矢量”为原则提出了矩形截面钢管在自由空间曲面上的合理定位方法，并将该方法通过计算机程序实现三维实体模型的自动生成与测评功能，提高了设计效率、规避了出图错误。在此基础上，对简化模型和精细模型进行了对比分析，总结各自的适用范围。最后，对幕墙玻璃的裁剪进行了几何分析，并编制自动裁剪程序。

Abstract: Sun Valley Expo-axis single-layer grid of nodes in large quantities, the different space angle bars, each bar height difference exists in the node with the wrong side, leading to similar to each node is not the same characteristics. Deepening design of highly manual and error is difficult to check and find errors. In this paper, the building of the Expo Axis Sun Valley relies on a complex spatial structure of the glass curtain wall for connection to single-layer structure and rectangular pipe grid conducted a study of solid modeling. The "nodes together adjacent surface normal vector" principle put forward the rectangular cross-section steel tube in free space positioning methods and reasonable on the surface, and the method through the computer program to achieve three-dimensional solid model of the automatic generation and evaluation capabilities, thereby increasing the efficiency of the design to circumvent the plot error, for the promotion and application of a similar structure to lay the theoretical and design basis. On this basis, to simplify the model and refined model of the comparative analysis, sum up their scope of application. Finally, the curtain wall of glass cutting was geometric analysis and the preparation of auto-cutting process.