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近年来,一些大型热电厂、海运码头、大型煤矿企业,在其贮运环节中将贮煤的吨位容量提升到数万吨以至十多万吨,用钢筋混凝土圆筒仓来贮存,其高度又不能很高,一般在20m左右,因此,贮仓的直径就必须很大,达到120m或者更大。部分设计人将其仓壁设计成挡墙结构,另一部分仍设计成圆筒仓。在南方,夏季会很热,气温甚至可达38℃以上,仓壁外露其外侧温度必定很高,而仓内贮煤的温度一般在5～10℃左右。本文对考虑此仓壁内外侧温差时筒仓的温度应力计算进行探讨,供设计人员参考。
In recent years, some large-scale thermal power plants, marine terminals and large-scale coal mining enterprises have increased the tonnage of coal stored in their storage and transportation links to tens of thousands tons and even more than 100,000 tons and stored them in reinforced concrete cylindrical silos, High, usually about 20m, therefore, the storage tank diameter must be large, reaching 120m or more. Some designers design their warehouse wall as a retaining wall structure, and the other part is still designed as a circular silo. In the south, the summer will be very hot and the temperature may reach as high as 38 ° C. The outer wall temperature of the silo wall must be very high, while the temperature of coal storage inside the silo is generally about 5 to 10 ° C. In this paper, the temperature stress of silos considering the temperature difference between the inside and outside of the silo wall is discussed for designers’ reference.