柱子上下两端（或仅上端）收小，如梭形，六朝至宋官式建筑上见之，明代仍见与江南民间。
所以呢人们就管它叫梭柱。
就三梭柱单元导出了棱边有限元法的1-形式线性插值基函数。
The edge finite element interpolation function of 1-forms for prism is derived.
钢屋盖主要支承在钢柱-支撑上，并运用了多种滑动支座、摇摆柱、梭形钢结构桁架柱，以减少屋盖的跨度并丰富建筑的表现手段。
Meanwhile, various sliding bearings, swinging columns and steel shuttle-shaped truss columns are put into application to reduce the roof span and enrich the architectural image as well.
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