Stress in the tower foundation
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1. The operating temperature of the tower is 200°C; its diameter is φ1600 mm and its height is 20,000 mm. What are the methods for calculating the stress on the top condenser and on the foundation resulting from the thermal expansion of the tower as it moves from a cold state to a hot state? 2. What measures can be taken at the foundation level to eliminate or reduce thermal stress?
1. The calculation of the thermal growth amount of the tower body can be done using the linear expansion coefficient method. First, the linear expansion of the tower due to temperature rise is calculated, and then stresses are determined through mechanical analysis, taking into account the way in which the tower is connected to the foundation and the condenser at its top, as well as the constraints on expansion. The specific calculation method needs to be determined based on the actual structure and material properties. 2. Measures to reduce thermal stress include using materials with a low coefficient of thermal expansion, designing structures that allow for some thermal expansion (such as incorporating sliding supports or expansion joints), adding insulation layers to reduce temperature differences, and arranging heating and cooling systems appropriately to minimize temperature gradients. .