日照温度作用下大直径氧化铝钢筒仓应力分析  

Solar radiation temperature action on stresses of a large flat-bottom squat steel silos for alumina

作　　者：杨应华[1] 马越[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《建筑结构》2014年第12期104-109,共6页Building Structure

基　　金：陕西省教育厅专项科研计划项目(11JK0945)

摘　　要：运用ANSYS程序分析了由日照产生的不均匀温度场对钢筒仓仓壁的周向、轴向应力及von Mises应力的影响,并与均匀季节温差作用和无温度作用下仓壁中的应力进行对比与分析。研究表明,日照温度作用对钢筒仓仓壁的应力影响较大,各种温度作用下仓壁底部的应力最大,日照温度作用产生的温度应力最大。在日照温度作用-40^-10℃时,满仓时仓壁底部的周向应力约为无温度作用时的11倍;在日照温度作用50~80℃时,满仓时仓壁底部的轴向应力约为无温度作用时的2倍。因此,日照温度作用对钢筒仓应力的影响应在设计中充分考虑。Hoop, axial and von Mises equivalent stresses under non-uniform temperature field caused by solar radiation were analyzed by using ANSYS program. Silo wall stresses under uniform temperature field variations and solely storage loads were compared with those under solar radiation. It is shown that solar radiation stresses are the most significant among all the thermal stresses, and the maximal thermal stresses all occur at the bottom of the silos. The maximal hoop stress under solar radiation at -40 - -10℃ could reach 11 times that by solely storage loads, while the maximal axial stress under solar radiation at 50 - 80℃ could be 2 times that due to storage loads. Therefore, solar radiation effects should be properly considered in the design of such silos.

关 键 词：钢筒仓 日照温度作用 温度应力 加劲壳 有限元分析 

分 类 号：TU333[建筑科学—结构工程]