Co-operation performance of rocking wall moment frame structure based on distributed parameter model
To study the co-operation performance of self-centering rocking wall-moment frame(RWMF)structure,the proposed distributed parameter model is utilized to investigate the principle and basic influence law of co-operation performance.The complete static and dynamic response equations are developed and solved to obtain the closed solutions for the lateral displacement,internal forces,and dynamic responses of each order of the RWMF structure.The effects of the stiffness ratio λ between frame and rocking wall(RW)and the rotational constraint Rf at the bottom of the RW on the co-operation performance are also investigated by parametric analysis,and finally the co-operation performance is quantified by using the inter-story drift concentration factor(DCF).The results show the characteristic stiffness value of the RW should be less than 10,otherwise the RW will have minimal effect on co-operating control;when the value of λ is moderate,the constraint at the bottom of the RW can enhance the co-operation effect,and when Rf>5,the continued increase of its constraint will not enhance the co-operation effect.When λ and Rf are taken as 1≤λ≤5 ∩ 0.1<Rf≤10,the self-centering RWMF structure can achieve a balance between distribution uniformity and reduction of damage to the main frame,achieving optimal co-operation performance.
万方数据
维普
