Research On Aseismatic Behavior Of R.C. Frame With Special-Shaped Columns

With the development of city construction, it appears lots of new-style building structure forms.Reinforced concrete special-shaped columns structure is one of them.This structure has many advantages.Such as it won't appear edges indoors it convenient for arranging house furnitures, and enlarge the effective usable floor area of the room and so on.It has been extended and used in our many cities.Due to it has good construct function.In recent years, reinforced concrete special-shaped columns structure has been widely used, which considered to be a new-style building structure system,has never been experienced the test of earthquake.This construction exists shortage in analysis the elasticoplastic deformation,the assessment method of earthquake resistant behaviour,the studies and the experimental under the effection of earthquake.So,it is very important to know the theory meaning and pratical value,as well as to study the earthquake resistant behaviour and the way of designing about reinforced concrete special-shaped columns structure system.In the paper,First.Building the finite element models about Equivalence limb special-shaped columns,Differ limb special-shaped columns and the bottom of increase support such limb special-shaped columns,according to these three different constructions,proceeding modality analysis.Comparing these three constructions dynamic characteristics and considered it to be the basis of dynamic analytical. Inputting Tianjing Wave,ET-centro Wave and Synthetic Wave into the model, proceeding in analyzing the time course of motive power.Contrasting the features of each construction crossrange the maximum displacement relative storey displacement and relative storey displacement angle,as weel as each pillar's axial force, bending moment the pressure ratio and so on under the effection of different earthquake waves.Analysis the character of transformation and regularities of distribution about the internal force towards each construction under the effective of earthquake. Second,according to the three-tier reinforced concrete special-shaped columns frame structure by using the general structural analysis software ANSYS,Comparing the simulated result with the test result,if both of them fit well to each other,it shows the tensility function works well which by using the software ANSYS to imitate the special-shaped column frame structure under the low cyclic loading.The imitation has better reflected the frame's each process tensility function's change from uploading to being destroried.Last,after proceeding the force analysis of special-shaped columns structure,it should be clear and definite to aim at increasing the earthquake resistant behaviour during designing the special-shaped columns,reduce the negative influence of construction shock-resistant special-shaped columns as far as possible.