Mechanical Characteristics of Retractable Radial Cable Roof Systems

Abstract

The objective of this study is to analysis the mechanical characteristics on the geometric nonlinear behavior of radial cable roof systems for long span retractable cable roof structures. The retractable roof is designed as a full control system to overcome extreme outdoor environments such as extreme hot or cold weather, strong wind or sunlight, and the cable roof greatly can reduce roof weight compared to other rigid structural system. A retractable cable roof system is a type of structures in which the part of entire roof can be opened and closed. The radial cable roof is an effective structural system for large span retractable roofs, the outer perimeter of the roof is a fixed membrane roof and the middle part is a roof that can be opened and closed. The double arrangement cables of a radial cable truss roof system with reverse curvature works more effectively as a load bearing cables, the cable system can carry vertical load in up and downward direction. In this paper, to analyze the mechanical characteristics of a radial cable roof system with central posts, the authors will investigate the tensile forces of bearing cables, stabilized cables, ring cables, and the deflection of roof according to the height of the post or hub that affects the sag ratio of cable truss. The tensile forces of the cables and the deflection of the roof are compared for the cases when the retractable roof is closed and opened. Keywords : Radial cable roof systems, Geometric nonlinear behavior, Long span retractable cable roof structures

Design of large space cable roofs with retractable systems to open and close

“…Cables always have a nonlinear behavior that has large displacement. The cable element has been studied of great interest for many years [1][2][3][4][5][6][7][8][9]. The objective of this study is to analysis the mechanical characteristics on the geometric nonlinear behavior of a radial cable roof system and a spoke wheel roof system for long span retractable cable roofs.…”

Design of cable net-membrane roofs with reverse curvature by nonlinear analysis

“…Cables having these advantages can be applied to the large span structures with lightweight roof alone or in combination with other structural elements. The use of cable systems in the large span roof and the structure with free form design can widen the possibility of the building construction in terms of economy and formability [5][6][7][8][9][10][11][12]. When using cables as structural members, it is difficult to expect the stability of cable system in a relaxed state.…”

Mechanical characteristics of Circular cable roof systems

“…The retractable roof is designed as a full control system to overcome extreme outdoor environments such as extreme hot, cold weather, strong wind or sunlight, and also the cable roof greatly can reduce the roof weight compared to other rigid structural system [3][4][5][6][7][8][9][10]. …”

“…A retractable cable roof system is a type of structures in which the part of entire roof can be opened and closed. The radial cable roof is an effective structural system for large span retractable roofs, the outer perimeter of the roof is a fixed membrane roof and the middle part is a roof that can be opened and closed [10]. It is analyzed the mechanical characteristics of a radial cable roof system by the height of roof posts.…”

“…Therefore, the geometric nonlinear analysis of cable systems does not exhibit typical nonlinear behavior, it is necessary to handle initial pre-stress forces, iterative numbers of load step, a data of convergence criteria, an artificial control data of negative cable and a choice of nonlinear iterative method. In this paper, it will be compared for the tensile force of cables and deflection of a roof for retractable circular cable structures according to the height of roof posts [3][4][5][6][7][8][9][10]. …”