Dynamic Characteristics Research And Finite Element Analysis For Frame Type Power Station Boiler Steel Frame

With the rapid development of industrial economy and change of technology, lots of new architectural with new style emerged. The steel structure construction which has light qualitative, high strength, good ductility, simple production process and rapid construction attracted high attention of architectural enterprise and related designer. Meanwhile, the constructions also have the characteristic of large space, high degree industrialization, strong sealing, corrosion resistance and outstanding comprehensive economic indicators. The steel structure construction has been one of the major explorations of the industrial enterprise and related scientific research institution.Nowadays, the consumption of electric power energy increases rapidly. Supercritical even bigger giant power station model of the electric power industry develop fast. The relatively mature million kilowatt power generating is set and imported batch. And the special boiler matching with it is put into use. The boiler of the below power station needs suspension and giant steel to support. Usually the steel components of the boiler are complex. Some achievements have been obtained on the study of the design method the static analysis of the special steel structure. But there is few study and achievement on non-linear dynamic. The promotion of computer operation speed and applications of simulation technology drive the study in the higher level.The large-scale power plant boiler frame type frame structure is analyzed using the finite element software ANSYS and program editing software MATLAB in this paper. The seismic load and wind load under the action of dynamic characteristic were studied with the construction of the APDL parameterized model and program is constructed. Conclusions are as follows:(1) The APDL parameter simplified model is set up according to the actual installation and operation frame type and component size of boiler steel. The loads on the boiler steel are calculated using the equivalent theory according to the specification of GB 50009-2012. Static space is studied using the software ANSYS and the distribution of static space structure is obtained. In order to study the effects of seismic load and wind load excitation on the dynamic response of steel structure, the subspace method of relatively high accuracy (subspace) analysis is selected.(2) With seismic effect coefficient curve data and three sets of seismic acceleration curve for adjustment of input excitation, the spectrum method and time history method is obtained to analyze the seismic dynamic response characteristics of power station boiler steel frame and compare the results of it. The seism is set as a model using time history analysis. Various method inelastic response and phase response of stress and deformation are acquired during variation process by loading the APDL parametric model.(3) Wind generation process simulation program is achieved using the stochastic theory of linear filter method (AR method) in the MATLAB platform. The frame work of dynamic characteristics of power station boiler steel frame is studied with the importing of the fluctuating wind time history curve of the data into the frame model.