底框结构在倾覆力矩作用下附加轴力的计算

Calculation for the extra normal force of column of masonry structure with ground frame acted by seismic overturning moment

底框结构在倾覆力矩作用下，往往在柱中产生附加轴力，且影响较大，但精确计算困难，现有的计算方法较繁，且未考虑空间协同作用，常导致计算误差较大，本文从空间协同工作入手利用功能原理导出一简化计算公式便于实际应用．

Acting by the moment of earthquake,the extra force of column of masonry structure with ground frame is produced,and the influence of this extra force is often considerable.It is difficult to calculate the extra normal force accurately.The method being used in design of structure are diverse and complicated,and the spatial behaviour of structure is not considered,as a result,the error of calculating result is considerable.In this paper,a method which can be used easily for practice of engineering is obtained according to the principles of spatial behaviour and work.