【摘要】 本文在文[6]的基础上,应用随机振动的谱分析法和全尺寸风压的实测数据,分析了双曲冷却塔壳-支承系统-基础-无限域土壤这一完整系统的随机阵风响应,得到壳体和环形基础的阵风响应因子。文中考虑了不同类型的土壤和风压相关性等因素对阵风响应因子的影响,并给出数值计算结果。更多还原

【Abstract】 Random dynamic responses of cooling tower structure-footing-infinite soil system are studied by means of finite element method and full-scale measurement. In numerical analyses, the tower shell is represented by semi-analytical rotational shell finite element and the discret column system is treated as an modified equivalent shell element. While the circular footing is treated by using three dimensional curved beam element. The infinite soil medium is represented by an equivalent dynamic boundary system. Numerical applications include gust responses of tower shell and footing corresponding to three kinds of soil medium.更多还原