The tension structures discussed in this book are predominantly roofing forms created from pre-stressed cable nets, cable trusses, and continuous membranes (fabric structures). A unique feature in their design is “form-finding” – an interactive process of defining the shape of a structure under tension. The book discusses the role of stable minimal surfaces (minimum energy forms occurring in natural objects, such as soap films) in finding optimal shapes of membrane and cable structures. The discussion of form-finding is extended to structural forms whose shape is supposedly known, such as suspension bridge cables.
This invaluable book presents numerical modelling of the structural form and behaviour of tension structures, but also addresses certain misconceptions related to their design. It provides unique insights into the most commonly used computational methods, emphasising their main strengths and limitations. Mathematical expositions do not go beyond the level of undergraduate engineering mathematics and wherever possible, non-mathematical language is used to aid understanding of the fundamental concepts. Tension Structures, presents a balance between analytical and pictorial aspects of the subject.
Preface
Chapter 1 : Form-Finding
Chapter 2 : Geometrically Non-Linear Behaviour
Chapter 3 : Dynamic Relaxation Method
Chapter 4 : Case Studies of Cable Roof Structures
Chapter 5 : Design Issues : Form-Finding and Patterning
Chapter 6 : Tension Cables in Suspension Bridges
Chapter 7 : A Case of Form-Finding
Chapter 8 : Modelling of Tension Membranes
Index
