中文摘要：

根据国家相关规范，比较了风与地震作用对苏南地区矩形截面高层建筑产生的基底剪力与弯矩，推导出相关公式并对其中参数进行了简化处理．计算了高层建筑在两者基底剪力与弯矩相等时的临界高宽比，分析了风与地震作用各在何时起控制作用．经过对比发现：风载荷与地震作用的最主要控制条件为结构高宽比，该现象对高层钢结构而言尤其明显，这与钢结构相对钢筋混凝土结构较轻柔、对风载荷更加敏感的特性是一致的．

英文摘要：

According to the related national codes, the base shear and bending moment of the tall buildings with rectangular section in the south of Jiangsu province caused by wind and earthquake action are compared. In addition, correlation formulas are derived and some parameters are simplified. Moreover, the critical height-width ratio in the tall buildings are calculated when the two kinds of the base shear and bending moment are equal. At last, when the wind or earthquake action acts the controlling role to the base shear and moment respectively is analyzed. It is found that the height-width ratio is the most important controlling condition of wind and earthquake action, and the phenomenon is more obvious to high--rise steel structure buildings which is consistent with the characteristics of steel structure that it is lighter and more flexible than reinforced concrete structure, and more sensitive to wind.