STRUCTURAL STABILITV OF HVBRID CABLE STRUCTURES -INVESTIGATION BY USE OF FUNDMENTAL MODELS-

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Publication year 1988
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Title STRUCTURAL STABILITV OF HVBRID CABLE STRUCTURES -INVESTIGATION BY USE OF FUNDMENTAL MODELS-
Author Yasuhiko HANGAI,Hideki MAGARA,Kiyoshi OKAMUR,Xiaoguang LIN
Summary Hybrid cable structures. which are constituted of cables， membranes， posts， etc. have the structural characteristics such that tension stresses are transmitted by cables and membranes，and in the other hand. compression stresses are transmitted by posts. Since cables and membranes have no stiffness for compression， initial stiffness has to be given by the introduction of initial tension which satisfies the self-equilibrated stress system. SO， the following items are considered to be studied: (1) Determination of configurations which satisfy the self-equilibrated stress system， (2) Estimation of initial stiffness by the introduction of initial tension，( 3) Structural behaviors due to loading，and (4) Structural stability in the initial tension state and the loaded state. The items of (1) through (3) are bases for the structural design of hybrid cable structures. However， these items have to be treated under the condition that the considered hybrid cable structure is not in the unstable state. Based on the above perspective，fundamental behaviors of structural stability for hybrid cable structures are examined in the paper by use of simple models. Main contents are as follows.
(a) Load-displacement relations considering higher order nonlinear terms and estimate of nonlinear terms，
(b) Occurrence conditions of slackness and yield of cables，
(c) structural behaviors under the unsymmetrical loadings， and
(d) Out-of-plane buckling of a post.