Research On The Torsion Effect Of Framed-tube Structure Considering Seismic Action

In recent years, a great quantities high-rise structure flows out continuously along with our country keeping a high speed development. The irregular high-rise structure design becomes a core problem. Our country is the nation that an earthquake takes place easily. So the problem of torsion couple is an important topic in the structure earthquake-resistance realm.This paper mainly discuses particularly about related linear eccentricity; rotary inertia and torsion periodic ratio for the influence of vibration effect of the high-rise symmetry structture. This also a point out it is possible under special condition for the phenomenal of related torsion response dynamic magnification.This paper analyzes from the theories and engineering examples to review rationality of the different torsion effect indexes, such as relative torsion effectθr/u, shear force ratioλbetween torsion and translation, eccentric angle of torsion. It studies these impact factor and inside contact of different indexes.The paper inquiries into the related provision about period ratio in codes and the problems of carrying out period ratio during the present design. Then we design lots of engineering e, xamples to discuss related linear eccentricity e/r and frequency ratioω_θ/ω_y for the influence of torsion effect of framed-tube structure.The paper inquiries into each impact factor of the framed-tube structure period ratio and puts forward the reasonable ways controlling the period ratio. Finally contacting the engineering examples, the over proof period ratio of triangle framed-tube structure is controlled under the limit value in the provision code through adjusting component, which confirms the rationality of methods this paper putting forward with.