钢筋混凝土圆形地下粮仓温度场试验研究  

EXPERIMENTAL STUDY ON TEMPERATURE FIELD OF UNDERGROUND REINFORCED CONCRETE CIRCULAR GRANARY

作　　者：王振清[1] 田栋杰 刘海燕[1] WANG Zhengqing;TIAN Dongjie;LIU Haiyan(College of Civil Engineering,Henan University of Technology,Zhengzhou 450001,China)

机构地区：[1]河南工业大学土木建筑学院,河南郑州450001

出　　处：《河南工业大学学报（自然科学版）》2018年第3期99-102,126,共5页Journal of Henan University of Technology：Natural Science Edition

基　　金：国家粮食公益性行业科研专项(201413007-01)

摘　　要：针对钢筋混凝土圆形地下粮仓,研究其在储粮期间仓内温度场的变化情况,进而研究分析仓内粮情变化,为地下粮仓仓储研究提供理论依据。利用地下仓仓外与仓内埋设的温度传感器,实时监测气温、地温、仓温、粮温等数据,通过跟踪记录地下粮仓一年内气温、地温、仓温、粮温等数据,分析研究钢筋混凝土圆形地下粮仓温度场在宏观及纵向的温度变化规律。研究结果表明:钢筋混凝土圆形地下粮仓仓内粮温全年稳定在20℃以下,符合准低温仓的特点。试验仓仓内粮温在纵向存在明显分层现象,上部(1层、2层)粮温(埋地深度4 m以上)波动幅度高于下部粮温。上部(1层、2层)粮温夏季温度在22℃左右,冬季温度在15℃左右,年温度变化幅度约7℃,波动幅度较大;随着季节变化,气温影响地温、仓温及粮温;仓内粮堆内部随着周围温度的变化也不停地进行着热质交换;地温变化与气温变化呈现一致性及滞后性,仓温及粮温滞后为2个月。研究得出了地温、仓温、粮温随气温、时间、空间的变化规律,提出了控制上层粮温受气温影响大的应对措施,为以后地下粮仓的温度场控制提供参考和依据。For the underground reinforced concrete round granary,studying the change of the temperature field in the storehouse during the storage of grain provides theory for underground storage.The temperature sensors were embedded in the barn and in the silo to measure air temperature,soil temperature,warehouse temperature,grain temperature.By tracking and recording the data of air temperature,ground temperature,storehouse temperature and grain temperature in a whole year,the change rule of temperature field in reinforced concrete circular barn was analyzed.The results showed that the grain temperature in the rounded RC barn was stable below 20 centigrade throughout the year,which was in line with the characteristics of the quasi low temperature silo.The temperatures varied in different grain layers at vertical level,with the temperature changes at upper layers(top first and second layers)higher than that at bottom layers(below ground more than 4 m).The temperatures at upper layers(top first and second layers)were about 22℃in summer and 15℃in winter with change range of 7℃.With the seasons changing,the air temperature affected the soil temperature,warehouse temperature and grain temperature.In addition,the grain pile inside the granary with the surrounding temperature changing were also keeping heat exchange.The change of ground temperatures and temperatures showed consistency and lag,and the lag of warehouse temperature and grain temperature was two months.In this paper,the change rule of soil temperature,warehouse temperature and grain temperature changing with air temperature,time and space was achieved and provided reference and basis for the control of the temperature field of the underground granary.

关 键 词：地下粮仓 实仓试验 温度场 试验研究 

分 类 号：TS210[轻工技术与工程—粮食、油脂及植物蛋白工程]