设置多道加强层的框-筒结构侧移分析方法

将设置若干加强层的框-筒结构分解为若干子结构，同时考虑加强层梁、核心筒、外框柱及普通楼层梁，并将楼层梁按连续化分析的方法等效为沿高度均匀分布的离散杆件，根据顶部设置加强层的子结构在水平荷载作用下各构件应变能总和的表达式，利用最小势能原理和泛函变分的相关理论，推导出了硕部设置加强层框-筒结构在水平荷栽作用下的侧移解析表达式，并可据此进一步计算设置多道加强层框-筒结构的侧移。

Sidesway Analysis Method of High-rise Frame-tube Structure with Strengthened Stories Under Lateral Load

This paper is mainly about the analysis of high-rise frame-tube structure with strengthened stories,which can be simplified into some substrucrures on the principle of superposition,and proposes a new displacement calculating method under lateral load.From the expression of strain energy yielded by considering the contribution of the floor beam which is simplified as continuous medium along the height using continuum theory and taking the shear deformation of strengthened girders,core wall,floor beams,and columns into account,use the minimum potential energy principle,functional and variation approach,finally obtains the analytic expression of the swing of framed-tube structure with topstrengthened stories in terms of the height.This conclusion supplies much convenience to check the sidesway and get the internal forces of such structure under lateral loads.