论文部分内容阅读
堆煤引起的仓壁内外温差和仓壁侧压力是大直径整体式筒仓设计中2个控制性荷载,合理地确定它们至关重要.在已建成的120m直径筒仓内布设传感器,实测了堆煤引起的筒仓内壁温度随时间的变化,以及仓壁侧压力随高度的变化.还使用库伦土压力理论推导了侧压力的理论预测公式,取得的主要结果是:内壁温度高达38℃,实测侧压力与堆煤高度基本呈线性关系,平均侧压力系数为0.46.而侧压力的理论预测值比实测小5%左右.
The temperature difference inside and outside the silo wall and the pressure on the silo wall caused by coal accumulation are two controlled loads in the design of large-diameter monolithic silos, and it is very important to determine them rationally.With sensors installed in the built 120m silo, The inner wall temperature changes with time due to coal accumulation, and the change of pressure on the silo side with height, the theoretical prediction formula of lateral pressure is also deduced using Coulomb’s earth pressure theory.The main results obtained are as follows: the inner wall temperature is as high as 38 ℃, The measured lateral pressure is basically linear with the height of coal accumulation, and the average lateral pressure coefficient is 0.46, while the theoretical predictive value of lateral pressure is about 5% less than the measured value.