Analysis method for torsion resistance moment of inertia of beam element of architectural structure

Abstract

The invention discloses an analysis method for torsion resistance moment of inertia of a beam element of an architectural structure. The analysis method includes scattering sections into solid units, shell units or rod units according to types of building materials; and computing deformation parameters of finite element modules which are formed by means of scattering the sections and consist of the solid units or the shell units in a finite element manner, determining torsion resistance moment of inertia by the aid of the deformation parameters, and using the torsion resistance moment of inertia as the torsion resistance moment of inertia of the beam element with the scattered sections. The analysis method includes steps of determining a section corner theta' under the effect of torsion by the aid of the solid (shell) units which are formed after the sections are further scattered, accordingly determining the torsion resistance of moment of inertia and using the torsion resistance of moment of inertia as the torsion resistance moment of inertia of the beam element. Compared with the prior art, the analysis method adopts the scheme that the torsion resistance moment of inertia is computed by means of integration of a formula or a section, mechanical concepts of the analysis method are clear, practicality is high, effects of transverse partition boards and the like in a beam canbe taken into consideration, computation results are accurate, and more accurate data references can be provided for consequent mechanical analysis.

Description

technical field [0001] The invention relates to mechanical analysis of building structures, in particular to a method for analyzing the torsional moment of inertia of beam units of building structures. Background technique [0002] In the process of mechanical analysis of the beam element of the building structure, the analysis of the torsional moment of inertia of the beam element of the building structure will be involved. [0003] At present, the analysis method of the torsional moment of inertia of the beam element of the building structure mainly adopts the following methods: [0004] 1. Saint-Venant method, the calculation of torsional stiffness is based on the pure torsion theory of single box and single chamber, and is derived from the film comparison method, but this method is only used for single box structures. [0005] 2. The Bredt method is based on the pure torsion theory of single box and single room, and is derived according to the shear flow balance conditi...

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Problems solved by technology

[0008] In view of this, the present invention is to provide an analysis method of the torsional moment of inertia of the beam unit of a building structure, to solve the problem that the accuracy of the torsional moment of inertia of the beam unit determined by the above analysis method is biased

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