Experimental and numerical research on squat silo and large size horizontal warehouse during quasi-steady-state storage

Traditional method to prevent stored grain from deterioration is to control grain temperature.A three dimensional(3-D)numerical model was established to study the temperature variation in outdoor squat silo and large size horizontal warehouse at quasi-steady-state.In this research,porous media model and solar radiation model were adopted.Numerical and experimental results showed that grain temperature was influenced by temperature of wall,height of grain and the distance between grain and the wall.Temperature changes dramatically at the top layer of grain heap due to solar radiation and heat convection at air layer.Temperature of grain close to wall increased with the increasing of ambient temperature.The model established in this research is suitable for predicting grain temperature in outdoor squat silo and large size horizontal warehouse.

平房仓、浅圆仓和立筒仓储粮性能探讨

对平房仓、浅圆仓和立筒仓三种仓型进行储粮观察、性能比较和结果分析,归纳出三种仓型各自的优点和缺点,以便更好的为储粮服务。

福建中央直属储备粮库的仓型选择与工程特点

本文论述了国家和省重点工程的我省基础设施建设项目中央直属储备粮库的建库原则、仓型选择以及工程建设上较为显著的工艺、建筑、结构特点。

环形偏置基础对浅圆仓仓壁受力变形特性的影响

为揭示环形偏置基础对浅圆仓仓壁受力变形的影响规律,通过壳体单元和弹簧单元建立了浅圆仓三维有限元分析模型,并对地基及基础约束、基础宽度、基础偏置方式、筒仓高径比和仓壁摩擦力开展了参数分析。结果表明随着底部约束的增强,仓壁底部环向拉力逐渐减少。基础偏置方式和仓壁摩擦力对于仓壁底部弯矩影响较大。因基础向外偏置所产生的“扳手”效应,在仓壁摩擦力、大高径比和弱底部约束叠加作用下仓壁底部的负弯矩远大于仓壁底部固结约束弯矩。