For matching the space bar with variant reinforcement arrangement distribution along the bar, this type of space bar is divided into two or three segments with invariant reinforcement arrangement distribution along the bar, and its stiffness matrix is derived on the basis of the stiffness matrix of reinforced concrete space bar with invariant reinforcement arrangement distribution along the bar.
In the analysis of this paper, tall frame is divided into space beam element, layered foundation is divided into finite layer, and the stiffness of a single pile is determined by Q-s curve.
Based on the characters of structure of the project,the structural style selection is given and analysis program of the latticed shell of double-layer hyperbolic pyramid cooling tower is programmed by the finite element theory and VB 6.0 advanced programming language,which includes of 15 programs and directly aims at cooler tower and gives the forcing property by the computing program of the latticed shell of double-layer hyperbolic developed.
(2) According to top structure , foundation and ground real working condition of interaction , utilize the finite element of a structure of space pole to analyse the top structure, use sub-structure condense technology couple top structure finite element and the finite element of raft foundation at the elastic ground and then, through the analysis of ANSYS procedure , investigate that the top structure affect on the strength and performance of shape of the raft foundation.
Based on the result derived from the 3D rod element program developed by Science Research Academy of China Building(i.e TBSA),the advatages and the disadvatages of two simplified methods to analyse frame tube structures have been compared on details in this paper,and then their priorities of application have been recommended.
A calculation model of bar system-cylindrical shell to be used for elasto-plastic analysis of earthquake response of reinforced concrete tube structures is given in the thesis. Spline function method is applied for analysis of thin cylindrical shell, and on the basis of the incremental theory, the elasto-plastic matrix and the stiffiness matrix of the thin cylindrical shell, as well as the elasto-plastic space bar element stiffiness matrix considering the shear deformation, P-△ effect are derived.
Based on the result derived from the 3D rod element program developed by Science Research Academy of China Building(i.e TBSA),the advatages and the disadvatages of two simplified methods to analyse frame tube structures have been compared on details in this paper,and then their priorities of application have been recommended.
Cable dome is a new type of long span structure which was realized by Geiger after developing Fuller's idea of tensegrity. On the base of studying the class of framework, determination of prestress and mechanism displacement model, the new conception of unit total feasible prestress is provided and the rule of stability is analyzed. Program has been developed to calculate different styles of cable domes and some useful conclusion is obtained.