Cooperative Form-finding Analysis And Load Analysis Study For The Cable-Strut-Membrane Structure

The Cable-Strut-Membrane Structure is a new-type building structure. It has lots of merits such as rational mechanical performance,novel modeling,high efficiencies,etc. and demonstrates the enormous vitality and wide application prospect.At present,certain achievement of the research in the theory and practice to the Cable-Strut-Membrane Structure has made both at home and abroad. But the relation of cable-pole and membrane is often isolated in present analysis design. The research of the cooperative analysis to the Cable-Strut-Membrane Structure has just been paid close attention. The cooperative analysis research on form-finding it says to be at home and abroad still blank.At first,on the basis of reviewing to the analytical method to the Cable-Strut-Membrane Structure both at home and abroad,this paper puts forward the thought of form-finding of the Cable-Strut-Membrane Structure,and considers that it is two kinds of different kinds of form-finding. The form-finding of cable-pole structure is the course to seek rational structure geometry and the distribution of prestress force by the geometry relation of the setting. But the form-finding of membrane structure is the course to seek rational structure geometry by certain border terms and prestress force.The thought of form-finding of the Cable-Strut-Membrane Structure is proposed. This is,according to the architectural appearance,request of constructing and the optimization result of cable-pole structure,the space form of cable-pole structure will be received. Then,the initial form the membrane will be made. The border part of membrane is the fixation border,and the other border part is non-fixation border fixed by cable-pole structure. And this border part will transfigure together with the cable-pole structure.Then each .Cable-Strut-Membrane unit is analyzed by adopt the non-linear finite element analytical method. According to virtual work principle,the equation of solving is formed,from the timid displacement principle,derive and happen to ask the equation of solving. Through the whole N-R method,cooperative form-finding of the Cable-Strut-Membrane Structure will be realized. This paper works out the cooperative analysis procedure.Firstly this paper makes form-finding analysis to the membrane and cable-membrane structures,then to cable-pole structure. And at last makes form-finding cooperative analysis to all kinds of the Cable-Strut-Membrane Structures and the characteristic of form-finding of them will be gained. The exactness of the procedure has been verified. This paper also compares the difference between cooperative form-finding and non-cooperative form-finding. And analyzed two methods to the influence of the membrane shape and analyzed whether membrane function affects the form-finding of cable-pole structure. It probably causes heavy error to membrane by means of non-cooperative form-finding. And cooperative form-finding is able to dispel this kind of error.At last,this paper studies the calculate model of all kinds of the Cable-Strut-Membrane Structures. The mechanical performance of cable-pole structure will be compared with betweenwhether membrane function is taken into account. Under the circumstances that the same design loads,it compares with the different responses of membrane in the Cable Dome Structure model through loading non-cooperative analysis and loading cooperative analysis. If the membrane function does not considered,the calculation value of bearing-loading performance of the Cable Dome Structure will be great,and the calculation value of the transfiguration is simply small,it will lead to the fact the structure is not safe. Therefore,the loading cooperative analysis of the Cable-Strut-Membrane Structure is necessary,and it can relatively truly response the mechanical performance of structure.Through cooperative analysis,the cable-pole structure in the Cable-Strut-Membrane Structure can be designed comparatively light. And this analysis method doesn't influence the form-finding of Cable-Strut-Membrane Str...