Performance Analysis And Design Of Reinforced By Large Hyperbolic Cooling Towers

The natural draught cooling tower is an important structure in thermal plants and nuclear plants. The cooling tower is a towering thin-walled structure,which is more than one hundred meters height, bearing the load of weight, wind, temperature action and earthquake. In order to ensure its safety and reliability, scholars from various countries pay attention to mechanical analysis of cooling towers.In this thesis, the cooling tower is analyzed in three aspects.1. Using the finite element software ANSYS, mechanical properties of the cooling tower are analyzed and calculated under cases of dead load, wind load, temperature action and earthquake. Wind load on the cooling tower is not constant along the height and radial, which is the controller load of the cooling tower and very important for mechanical properties. Under the case of wind load, the displacement of the cooling tower is large, the meridional force and the meridional moment as well. Under the case of temperature action, the tensile stress of temperature at the top and bottom of the cooling tower is large, causing the concrete crack of the cooling tower easily. A reasonable reinforcement design should be account at the top and bottom of the cooling tower.2. The parametric analysis of the cooling tower, consist of concrete strength, thickness, the number of column and cross-section of column, is used to estimate the influence of mechanical properties for the cooling tower. At last we provide recommendations for optimizing the design of the cooling tower.3. Based on the relevant domestic and foreign literature, the reinforcement design for concrete slab is successfully used in the cooling tower with the strut and tie model principle.