Abstract
Form-finding has to be carried out for tensioned fabric structure in order to determine the initial equilibrium shape under prescribed support condition and prestress pattern. Tensioned fabric structures are normally designed to be in the form of equal tensioned surface. Tensioned fabric structure is highly suited to be used for realizing surfaces of complex or new forms. However, research study on a new form as a tensioned fabric structure has not attracted much attention. Another source of inspiration minimal surface which could be adopted as form for tensioned fabric structure is very crucial. The aim of this study is to propose initial equilibrium shape of tensioned fabric structures in the form of Chen-Gackstatter. Computational form-finding using nonlinear analysis method is used to determine the Chen-Gackstatter form of uniformly stressed surfaces. A tensioned fabric structure must curve equally in opposite directions to give the resulting surface a three dimensional stability. In an anticlastic doubly curved surface, the sum of all positive and all negative curvatures is zero. This study provides an alternative choice for structural designer to consider the Chen-Gackstatter applied in tensioned fabric structures. The results on factors affecting initial equilibrium shape can serve as a reference for proper selection of surface parameter for achieving a structurally viable surface.
Highlights
Tensioned Fabric Structures (TFS) are the composition of tensioned fabric as structural members where the fabric patterns are joined together at seams. It is tensioned through mechanicals means or cables to a rigid supporting system to provide roofing structure
TFS include a wide variety of systems that are distinguished by their reliance upon tensile only members to support load
Tensioned fabric structure is highly suited to be used for realizing surfaces of new forms
Summary
Tensioned Fabric Structures (TFS) are the composition of tensioned fabric as structural members where the fabric patterns are joined together at seams. It is tensioned through mechanicals means or cables to a rigid supporting system to provide roofing structure. According to [1], TFS are durable structures and are good in insulation, light transmission and fire protection. All of these properties will be depending on the types of coating material used such as polyvinylchloride (PVC), polytetrafluoroethylene (PTFE). TFS are normally designed to be in the form of equal tensioned surface.
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