Dynamic Analysis Of Double Dome Shell Structure Under Seis-mic Multi-support Excitation

With the improvement of the building technology of complex space and the devel-opment of building materials, the dome network shell structures are applied widely athome and abroad in recent years, like train station, terminal, opera house, conventioncentre, pavilion church and other public buildings. Its anti-seismic is required higherand higher. Because the double dome network shell structure has big stiffness and span,it’s especially important to consider the adverse effect of time-variant characteristics andspace characteristic on essential.According to the pseudo excitation method multi-support random vibration theory,the study stimulated random seismic wave by methods of Fourier transform and inversetransform based on existing achievements. Take Hohhot East Railway Station house andthe central roof shell of the double dome network as Studying objects, by numerical si-mulation analysis methods, It mainly takes research on the large cross double domenetwork the shell vibration characteristics and excitation random response, and summa-rizes the response variation. The study’s main working:(1) Based on the pseudo excitation method of ground motion excitation span reti-culated shells stationary random response, non-stationary random response and to esti-mate the maximum value.(2) According to the engineering background and conditions of parameters, intro-duce the Gaussian distributed random phase spectrum by Fourier transform and inversetransform methods, and research artificial seismic waves based on MATLAB platform.(3) Ittoo kmumerical simulation analysis to the Hohhot East Railway Station housestruc ture and double central roof dome network shell structure withMIDAS.Gen and ANSYS finite elemen tsoftware.It also took research on the dynamic characteristics ofthe structure.(4) Through comparing the numerical simulation results of seismic horizontal, ver-tical and three-dimensional multipoint incentive structure. It took research on a largecross double dome the network shell structure radial chord abdominal bar internal forceresponse, hoop chord websin response to internal forces, support capitals displacement,the variation of the bottom of the column shear and moment response.