الفهرس | Only 14 pages are availabe for public view |
Abstract In tbis work, a detailed description of dynamic relaxation technique that can be applied to investigate the nonlinear structuralbehaviour of pretensioued suspension cable roofs is given. The classification of cable roofs and factors that affecting the design of these structures are introduced. A summery of previous theoretical work can-jed out ill the field of suspension roofs is given. The static analysis of cable structures by finite deflection theory and energy method are introduced. A theoretical analysis of static response of pre-tensioned cable networks is presented using a nonlinear energy approach by dynamic relaxation technique. The three basic factors that enter the equations of motion in the dynamic relaxation method are studied to reach the stability and convergence of the iterative technique. A computer program is performed to analyse several types of cable roofs structures by U1e dynamic relaxation technique taking into account the non Iinear beha viour of structure. A detailed results are presented tor a pre-tensioned hyperbolic network. (2.7m x 2.0m) for different cases of study , the results show a good agreement between different methods. A deta i10d results are presented for a pre-tensioned hyperbolic paraboloid network (73.2m x 73.2m) for different cases of loading and a comparison are made with alternative numerical results. The results of this study are discussed. |