1. Analysis and experiment for the formation and ultimate load testing of a hypar space truss
Journal of Constructional Steel Research
Volume 62, Issues 1-2, January-February 2006, Pages 189-193
Abstract
This paper discusses the behavior of post-tensioned space trusses with the hypar (hyperbolic paraboloid) shape, and the ultimate load test that was performed on one such structure. The tested hypar space truss was post-tensioned in the bottom chords of one diagonal. In this paper, the essential characteristics of shape formation are discussed on the basis of a small-scale test model. Results of experimental testing and nonlinear finite element analysis indicate that a planar rectangular layout can be deformed into a pre-determined hypar shape using the shape formation method proposed in this paper. Also the feasibility of the proposed method for constructing a hypar space truss has been presented. It follows that a nonlinear finite element analysis can be used in accurately predicting the behavior of the space truss and the required post-tensioning force. Through ultimate load testing, it is shown that the hypar space truss has significant structural strength.
2. Experimental study on reciprocal prism (RP) grid for space structures
Journal of Constructional Steel Research
Volume 59, Issue 11, November 2003, Pages 1363-1384
Abstract
Laboratory tests on two 8 m×8 m square-on-diagonal alternate reciprocal prism (SoD-ARP) grids have been conducted to verify the accuracy of the analytical model and to study the ultimate strength behaviour of cable-strut structures. Experience learned from the design and construction and issues pertaining to the implementation of such structures are reported. Other issues explored include the suitability of the “butterfly” joint for modular erection and the use of high-tensile rods as “cable” element. The main innovation of the reciprocal prism (RP) grid system is that it extends cable net structures into freestanding grids. It shows promise in having lower weight-to-strength ratio than the conventional space truss systems. These new structural forms have been proven to be structurally more efficient than space truss system for large-span spatial applications.
3. New space truss system—from concept to implementation
Engineering Structures
Volume 22, Issue 9, September 2000, Pages 1070-1085
Abstract
In 1993, and following years of research on the behaviour and economics of space structures, researchers at Dundee University developed a new space truss system called Catrus. The main features of Catrus are its continuous chord members, simple jointing system and ability to work compositely with concrete slabs and timber boards. An extensive research programme over 3 years studied the behaviour of the new system and the effect of the simplifications adopted in forming the joints and connecting the members. Overall, the results obtained indicated a reliable and robust structural behaviour. This paper reports on Catrus, from its development stages to its industrial exploitation.
Journal of Constructional Steel Research
Volume 62, Issues 1-2, January-February 2006, Pages 189-193
Abstract
This paper discusses the behavior of post-tensioned space trusses with the hypar (hyperbolic paraboloid) shape, and the ultimate load test that was performed on one such structure. The tested hypar space truss was post-tensioned in the bottom chords of one diagonal. In this paper, the essential characteristics of shape formation are discussed on the basis of a small-scale test model. Results of experimental testing and nonlinear finite element analysis indicate that a planar rectangular layout can be deformed into a pre-determined hypar shape using the shape formation method proposed in this paper. Also the feasibility of the proposed method for constructing a hypar space truss has been presented. It follows that a nonlinear finite element analysis can be used in accurately predicting the behavior of the space truss and the required post-tensioning force. Through ultimate load testing, it is shown that the hypar space truss has significant structural strength.
2. Experimental study on reciprocal prism (RP) grid for space structures
Journal of Constructional Steel Research
Volume 59, Issue 11, November 2003, Pages 1363-1384
Abstract
Laboratory tests on two 8 m×8 m square-on-diagonal alternate reciprocal prism (SoD-ARP) grids have been conducted to verify the accuracy of the analytical model and to study the ultimate strength behaviour of cable-strut structures. Experience learned from the design and construction and issues pertaining to the implementation of such structures are reported. Other issues explored include the suitability of the “butterfly” joint for modular erection and the use of high-tensile rods as “cable” element. The main innovation of the reciprocal prism (RP) grid system is that it extends cable net structures into freestanding grids. It shows promise in having lower weight-to-strength ratio than the conventional space truss systems. These new structural forms have been proven to be structurally more efficient than space truss system for large-span spatial applications.
3. New space truss system—from concept to implementation
Engineering Structures
Volume 22, Issue 9, September 2000, Pages 1070-1085
Abstract
In 1993, and following years of research on the behaviour and economics of space structures, researchers at Dundee University developed a new space truss system called Catrus. The main features of Catrus are its continuous chord members, simple jointing system and ability to work compositely with concrete slabs and timber boards. An extensive research programme over 3 years studied the behaviour of the new system and the effect of the simplifications adopted in forming the joints and connecting the members. Overall, the results obtained indicated a reliable and robust structural behaviour. This paper reports on Catrus, from its development stages to its industrial exploitation.
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