Abstract
Combined with a portal frame design, by the use of finite element software ANSYS, the finite element model of single specimens of portal rigid frame and the overall portal rigid frame building are established. portal rigid frame’s beam and column is variable cross section. Through the modal analysis, comparative analysis of the frequency and vibration type of the radiolabeling specimens and finite element model of the whole, for the further development of variable cross-section portal rigid frame of earthquake and wind vibration analysis lay the foundation.
Highlights
Portal frame structure has many advantages, such as large space, variable structure, simple structure, beautiful shape, light weight, high safety performance, good seismic performance, energy saving and environmental protection, removal and relocation[1,2]
The use of finite element software ANSYS, usually to portal rigid frame structure system to make some assumptions, the calculation assumed in the following several aspects[4,5], 1) Portal rigid frame beam and steel column, purlins and wall beam and frame beams and columns are connected by rigid connection, the column is hinged and support and the main body frame between connection articulated form
The influence of the first 20 modes of vibration mode is considered, and the extended mode is taken as the 20 order
Summary
Portal frame structure has many advantages, such as large space, variable structure, simple structure, beautiful shape, light weight, high safety performance, good seismic performance, energy saving and environmental protection, removal and relocation[1,2]. There are many factory buildings with portal frame structure. Variable cross-section portal rigid frame can enable cross section layout and effect to the gate type steel frame internal force corresponding to [3], and give full play to the steel performance, to achieve the purpose of saving steel
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