Expandable Space Structures

Abstract

Expandable space structures are of great value in situations where primary functional requirements include transportability and ease of erection. A family of expandable space structures are described in the present paper, where their practical applications and constructional aspects as well as their geometric and statical analyses are discussed.

Design Method for Radially Retractable Single DOF Plate Structure Based on Regular 1-Uniform Regular Tessellations

“…16). According to Grübler-Kutzbach formula; [32] M= 3(n-1) -2j 1 -2j 2 (2) where; M= degree of freedom or mobility n= number of links j 1 = number of 1 DOF joints j 2 = number of 2 DOF joints There are 9 links/plates and 12 single DOF joints. The mobility is calculated as M= 3(9-1) -2.12 and found 0.…”

“…Several deployable structures characterized by using scissor-like elements have been developed by Emilio Perez Pinero et al, [1] Valcarcel, [2] Escrig, [3] Ziegler, [4] Hernandez and Zalewski [5] and Gantes. [6] These deployable structures can be folded into a small volume but cannot attached to fixed supports which makes them unstable for long span.…”

Partial dismantling of 1960’s to 80’s neighbourhoods - a sustainable holistic solution

“…Among the examples of these structures, the most impressive ones are deployable bar structures with single degree-offreedom (DoF). These structures not only transform themselves from a compact configuration to a predetermined, expanded form, but also may become stable and carry loads (Pinero 1961;Escrig 1985;Gantes, 1989;Hoberman 1990;Kokawa & Hokkaido 1997;Atake 2000;Van Mele et al 2007;Akgün et al 2010Akgün et al , 2011Maden et al 2011). Therefore, such structures may offer viable solutions for architectural applications, especially for temporary buildings, emergency shelters, exhibition halls, outdoor recreation facilities or sporting fields (Fig.…”

A novel concept of convertible roofs with high transformability consisting of planar scissor-hinge structures

“…In addition, Pinero realized that if the interior pivot point on a rod is not at the midpoint, then it is possible to create a shell-shaped surface. Following Pinero, Escrig and Valcarcel focused on the development of new spatial grids and patterns for common arches, domes and large scale umbrellas [4][5][6][7]. During this development, they generally concentrated on new connection (hinge) elements.…”

“…Their studies proved that a defined geometry can be obtained from the multiplication of different units. In addition to the development of geometric designs for new structures, Escrig's [8,9], Gantes' [10][11][12][13][14] and Langbecker's works [15,16] also aimed at explaining the structural behaviour of the scissor-hinge structures in analytical and numerical ways, and at proposing methods for their combined geometric and structural design. However, the work of these researchers also concentrated on structures that are transformed between two pre-defined geometries, an open and a closed one, without attempting to provide additional geometric flexibility of scissor-hinge structures.…”