| With the rapid development of the modern experiment and computer technology, random vibration theory is widely applied in civil engineering practice. In my country, there has made a number of internationally in the field of random vibration influence of breakthrough for20years, including pseudo-excitation method. It is not accidental that virtual method and the theory first developed and quickly get increasingly extensive application in China,the starting point of it is just made a parameter transformation in the basic equations.it seems very simple,but it’s already satisfied the expression of the solution of the classical random vibration. Earthquakes are common in China. In the research of these large structure of seismic, the fierce space effect of the earthquakes should also be taken into consideration. and The Pseudo Excitation Method of random vibration for the low efficiency of the calculation method has made substantial breakthrough. The paper analyses Concrete Frame Structure in the action of random vibration in aspects of the calculating method of structural response and the characteristic of earthquake response. The main research contents are as follows:1. Determine how to make the earthquake acceleration into the curve and realize it in the model; comprehensive theory of large amounts of data and some references, to make the knowledge of the pseudo-excitation method clearly for modeling and use conclusion after theoretical basis.2. According to the random vibration pseudo-excitation method, analysis the response of the multilayer frame structure for stochastic seismic, simplify the structure, use MATLAB to make a program and the common finite element software SPA2000to model for vibration analysis and comparison, according to the random vibration method.3. By calculating and analyzing, conclusion the results of the analysis and choose the beneficial conclusions. Take the good use value in the earthquake, that is the ultimate goal of such research. |
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