CAJ | 학술논문

就弯剪型层模型弹塑性时程分析问题进行探讨。首先，引入2种荷载工况，根据每种荷载工况下原结构和等效模型的相同楼层位置处的位移对应相等，得到各楼层的等效抗弯刚度和抗剪刚度。其次，在采用并联电路模型和引入弯曲变形层单元形函数的基础上，基于势能驻值原理推导了层单元刚度矩阵。最后，建立基于层间动力状态参数的动力方程，并在此基础上，不引入任何假设，进一步推导拐点精确计算公式且给出了加载点和卸载点的拐点处理一致公式。结果表明：本文推导的层单元刚度矩阵是正确可行的，且薄弱层的最大层间位移计算值随拐点处理方法的不同而有较大差异。
취만전형층모형탄소성시정분석문제진행탐토。수선，인입2충하재공황，근거매충하재공황하원결구화등효모형적상동루층위치처적위이대응상등，득도각루층적등효항만강도화항전강도。기차，재채용병련전로모형화인입만곡변형층단원형함수적기출상，기우세능주치원리추도료층단원강도구진。최후，건립기우층간동력상태삼수적동력방정，병재차기출상，불인입임하가설，진일보추도괴점정학계산공식차급출료가재점화사재점적괴점처리일치공식。결과표명：본문추도적층단원강도구진시정학가행적，차박약층적최대층간위이계산치수괴점처리방법적불동이유교대차이。
This paper devotes to the elasto-plastic time-history analysis method for complex structural system based on shear-bending storey model.Firstly,the equivalent bending and shear stiffness for each storey were obtained according to the assumption that the value of displacement at each floor level of the original structure e-quates to that of the equivalent model under horizontal load.Then on the basis of applying the parallel-circuit model and introducing the shape function of bending deflection,the stiffness matrix of storey element was de-duced based on the principle of stationary potential energy.Ultimately,the dynamic equation in view of inter-stored state parameters was established,by which the accurate computational formula for dealing with loading and unloading critical point was derived without any assumption introduced.The accuracy and feasibility of the stiff-ness matrix of storey element proposed in the present paper was verified in comparison with study of a numerical example,while there existed large variation for maximum inter-storey displacement of the weak storey when u-sing different methods for the critical point.