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J. Ocean Eng. Technol. 2006;20(2):16-21.    

Influence of Removed Web Members in Shaping Formation for Hypar Space Truss
Kim Jin-Woo;Kwon Min-Ho;Lee Yong-Hee;
Department of Civil and Environment Engineering, Gyeongsang National University, Institute of Marine Industry;Department of Civil Engineering, Gyeongsang National University, Engineering Research Institute;Research Institute of Industrial Technology, Pusa
© 2006 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: Hypar space, Nonlinear analysis, Post-tensioning, Shape formation
Abstract
This paper discusses the behavior of post-tensioned and shaped hypar space truss, with consideration of the influence of removing some web members. Hypar space truss is post-tensioned at the bottom chords of one diagonal on the ground; the essential behavior characteristic of shape formation is discussed by using a small-scale test model.
Results
of experiments and nonlinear finite-element analysis indicate that a planar, rectangular- arranged structure can be deformed to a predicted hyper shape, by the proposed shape formation method. Also the feasibility of the proposed method for furnishing of a hypar shaped face truss has been presented, under the condition of both non-removed and partially removed web members. It follows that a nonlinear finite element analysis method can be used in predicting the behavior of the space shape and the post-tensioning force in sharing of hypar space truss. Further, in comparison to the other cases, the results of test and analysis show that the active diagonal shaping in the non-removed web members and passive diagonal shaping of partially removed web members are in relatively good agreement.
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