上海世博会主题馆地上建筑面积为8万m2,地下建筑面积为4万m2,其中3万m2的单体展馆内没有一根柱子。主题馆屋顶造型根据每个单元形体的跨度尺寸,布置对角线桁架增加结构的空间稳定性并自然形成折射的韵律和三角形的母体;通过对平面三角形顶点的竖向移位,形成侧向天窗,利于展馆内 The floor space of the Shanghai World Expo Theme Pavilion is 80,000 m2 and the underground construction area is 40,000 m2, of which there is not a single column in the monomer pavilion of 30,000 m2. According to the span size of each unit body, the diagonal truss is arranged to increase the spatial stability of the structure and naturally form the matrix of refracted rhyme and triangle. By vertical displacement of the apex of the plane triangle, a lateral skylight is formed , Which will benefit the exhibition hall