考虑桩-土-结构动力相互作用时高层建筑风致振动的响应计算

本文推导了考虑桩土结构动力相互作用时高层建筑在脉动风荷载作用下的运动方程。然后根据国家规范提供的参数及风洞试验得到的形状系数，推导出脉动风速及风压之间的关系，求出脉动风荷载的时程。利用该荷载对某超高层建筑的动力响应进行了计算。计算结果表明：桩土结构动力相互作用对高层建筑的风致振动响应的影响是明显的，应当引起重视。

EVALUATION OF DYNAMIC RESPONSE OF HIGH-RISING STRUCTURES SUBJECTED TO WIND LOAD CONSIDERING THE EFFECT OF SOIL-PILE-STRUCTURE INTERACTION

The motion equation of a high rising structure subjected to fluctuating wind load is developed, with the consideration of soil pile structure interaction. According to the parameters given by Chinese Code and the shape coefficients obtained from wind tunnel experiments, the relationship between velocity and pressure of fluctuating wind is dervied, and the time history of a fluctuating wind load is given. The evaluation of dynamic response of a high rising structure is carried out corresponding to the wind load. The results show that the interation effect on the wind induced vibration of high rising structure is obvious, and more attention should be paid to this phenomenon.