High-rise building structure inelastic time-varying analysis method

Abstract

The invention discloses a high-rise building structure inelastic time-varying analysis method and relates to a building structure design method. The high-rise building structure inelastic time-varying analysis method includes that construction simulation is performed on a structure by using three-dimensional finite element software, and initial internal force sigma of a construction member is calculated; a shrinkage and creep value D is calculated by adopting a B3 model, the shrinkage and creep value D is converted into equivalent temperature FT to be exerted in the model, and a consideration deformation internal force value sigma' is obtained through re-calculation; a shrinkage and creep value D' and equivalent temperature FT' after consideration deformation are calculated by using the anew obtained construction member internal force value sigma'; the equivalent temperature FT' is exerted on the model again, and finally a construction member internal force value sigma'' after coupling is obtained through calculation. A time-varying function coupling effect calculation method is deduced on the basis of a time-varying mechanics analysis method, the more accurate inelastic time-varying analysis method is provided on the basis, and the high-rise building structure inelastic time-varying analysis method has maneuverability in engineering application and meets requirements of engineering construction development well.

Description

technical field [0001] The invention belongs to the technical field of building structures, and relates to a building structure design method, in particular to an inelastic time-varying analysis method of a high-rise building structure. Background technique [0002] The current engineering design is based on the design (use) load of the complete (after completion) structure on the design drawings, and analyzes a complete structure. This method of analysis is valid and reliable for routine building design. The structural engineering of high-rise and super high-rise buildings is complex, the construction scale is large, the period is long, there is a long construction process during the construction period, and the situations encountered are complex and changeable. During the construction process, the geometric shape and physical properties of the incomplete structure gradually change, and it also bears various changing construction loads. In order to make the structural ana...

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Problems solved by technology

However, the traditional inelastic time-varying analysis method does not fully consider the correlation between the internal force time history and the deformation time history of the structure, and the results obtained are relatively inaccurate

In fact, the difference in inelastic deformation between different components of the structure will lead to the redistribution of the internal force of the structure, and the redistribution of internal force will in turn affect the inelastic deformation of the component. The internal relationship between the time history of internal force and the time history of deformation is called It is the coupling effect of structural time-varying effects, which has not been reflected in the inelastic time-varying analysis methods adopted at the present stage.

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