doi:10.3850/978-981-08-7920-4_S1-C35-cd

ABSTRACT

This paper analyses the constructability of a vertical double-layer space grid as a multi-story structural system. Part one of these papers discussed structural profiles and joints that are suitable for vertical double-layer space grid construction. In this second part, a construction study of a vertical multi-story double-layer space grid is discussed focusing on erection techniques and construction equipment. Construction techniques of several existing supertall buildings are reviewed in order to propose erection techniques and equipment that are suitable for a vertical double-layer space grid construction. The study shows that a conventional erection methodology commonly applied in multi-story buildings can be applied to the vertical double-layer space grid building. In addition, another erection technique is also proposed. This technique involves constructing three sides of the perimeter structure first, and then the gravity structure is lifted up by hoists hung from the horizontal double-layer space grids. The paper concludes the feasibility study of vertical double-layer space grid construction by summarizing its construction advantages. As self-bracing free-standing structures, double-layer space grids can be erected before gravity structure is connected to the main structure. The structural components on the higher levels are much lighter than the lower levels, which then enable installing assemblies ofmultiple components. These factors save considerable construction time.

Keywords: Double-layer space grid, Space structure, Steel structure, Multi-story, Tall building, Construction, Erection.

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