建筑新技术-空间结构

空间桁架的发展引发了桁架体系节点的具体的类型的创造和应用：MERO, Unistrut, Triodetic, Moduspan, Harley Mai Sky, Catrus, Pyramitec, Nodus 等等。事实上MERO体系是早期空间体系中的一个，它是由Max Mengering-hausen.博士于德国20世界40年代最先介绍使用的。直到今天它在使用中保持最受欢迎的之一。它由预制管材及被拧紧进锻造的钢连接器组成，即所谓的MERO球。共有18种部件组成的这一体系没有任何偏心。

这些体系中的两个基本类型是小骨架网和桶型地下室的曲线的形式，它们都可支撑圆屋顶。在骨架网内，双层格栅里两根平行的小格栅被倾斜的腹杆桁架相互连接。这种格栅可能直接埋设在彼此上方相互连接(直接连接)或者是相互补偿(补偿格栅). 这些基本的关系导致体系的不同的几何作用。 薄片圆屋顶和地下室由连结之间的钢或者铝单位组成。重要的富有创新精神的一步是Buckminster Fuller发明的前面已经提到过的网格球顶。 (毕业设计 )

The development of space trusses led to the creation and application of truss systems with specific types of node: MERO, Unistrut, Triodetic, Moduspan, Harley Mai Sky, Catrus, Pyramitec, Nodus and others. The MERO system in fact was one of the first space grid systems and it was introduced in the 1940s in Germany by Dr Max Mengering-hausen. To this day it remains one of the most popular in use. It consists of prefabricated steel tubes, which are screwed into forged steel connectors,the so-called MERO ball. Up to 18 members can be joined with this system without any eccentricity.

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The two basic types of these systems are the flat skeletal grid and the curvilinear forms of barrel vaults and braced domes. In the flat skeletal double-layer grids two parallel lane grids are inter-connected by inclined web members. The grids may be laid directly over one another (direct grid) or be offset from one another (offset grid). These basic relations lead to different geometries of the system. Lamella domes and vaults consist of inter-connecting steel or aluminium units. An important innovative step was the invention by Buckminster Fuller of the geodesic domes, to which reference has been made earlier.
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