Air Inflated Membrane Structure Mechanical Property Analysis And Experiment Research

As a type of a membrane structure, Air inflated membrane has its outstanding advantage such as less weight, fast built, beautiful shape, large span and well earthquake resistance, etc. With the progress of the pneumatic membrane's technology and the use of new membrane material—ETFE,Air inflated membrane gradually has a wide application in actual projects. For improving theory, ameliorating technology and increasing experience Air inflated membrane will consequentially have promising development in China.The development history, basic theory, FEM calculation will be introduced. By means of cable-membrane structure special analysis program SMCAD, some typical Air inflated membrane will be calculated for Form-finding analysis and load analysis. Influencing factor in Form-finding analysis such as initial pressure, cable and membrane prestress, type of cable grid, boundary condition and the convergence property will be discussed as well as the force transmission rule of Air inflated membrane in load analysis. Some general conclusions in Air inflated membrane design will be put forward."How to prevent rain for Bird Nest?"has been a new problem after its switching roof was removed. On account of the outstanding advantage of Air inflated membrane as less weight, fast built, large span and beautiful shape, a new idea is put forward that steel structure is combined with Air inflated membrane to solve"How to prevent rain for Bird Nest?"while it affects the origin structure a little. The program feasibility will be discussed by contrasting mechanical property variety before and after installing the upper Air inflated membrane. Theory correctness, Software reliability will be proved and error will be discussed by contrasting the experiment result and the numerical calculation result. Several suggest for Air inflated membrane design and construction will be put forward.