基于有效摩擦系数的平房仓储料压力计算模型与压力场计算方法  

Calculation model and pressure field calculation method of bulk material in warehouse based on effective friction coefficient

作　　者：陈家豪[1,2] 何佳欢 陈桂香 韩阳[1] 谭晗洋[1] CHEN Jiahao;HE Jiahuan;CHEN Guixiang;HAN Yang;TAN Hanyang(College of Civil Engineering,Henan Univercity of Techonology,Zhengzhou 450001,China;Henan Key Labratory of Grain Storage Facility and Safety,Henan Univercity of Techonology,Zhengzhou 450001,China)

机构地区：[1]河南工业大学土木工程学院,河南郑州450001 [2]河南工业大学河南省粮油仓储建筑与安全重点实验室,河南郑州450001

出　　处：《河南工业大学学报（自然科学版）》2022年第4期112-118,共7页Journal of Henan University of Technology：Natural Science Edition

基　　金：国家自然科学基金项目(51608176);河南省科技厅科技攻关项目(202102110118);河南省教育厅重点科研项目基础研究计划(20A560010);河南省粮油仓储建筑与安全重点实验室开放课题(2020KF-B01);河南工业大学创新基金支持计划专项资助(2020ZKCJ05);河南工业大学青年骨干教师培育计划(21420155)。

摘　　要：为探究平房仓内储料静态空间压力分布规律,将平房仓内部储料沿粮堆表面进行划分,并沿储料深度方向进行切割,得到若干个隔离体,在隔离体上取单位高度微元体进行静力平衡分析,基于粮堆有效摩擦系数提出一种平房仓储料静态空间压力场计算方法,能够得到储料内部任意一点的竖向压力、水平压力,将计算结果与实仓试验结果、平房仓规范值以及FLAC^(3D)数值模拟结果进行对比分析。结果表明:该计算方法得到储料内部竖向压力和水平压力随粮堆深度的增加而增大,与平房仓规范值基本吻合,略大于实仓试验结果、FLAC^(3D)数值模拟结果;同一水平面上竖向压力由仓中心至约束仓壁逐渐减小。研究结果可为解决平房仓散体储料空间压力场的粮仓结拱、超压等问题提供理论支持。In order to explore the distribution law of static spatial pressure in warehouse, the horizontal surface of the storage material in the warehouse was divided, and then it was cut along the depth direction of the grain pile to obtain several trapezoidal section of the grain column. The isolation body calculation model of the spatial pressure field of the warehouse storage material was obtained. The static equilibrium analysis was carried out by cutting the micro-element of unit height on the isolated body calculation model, and the static equilibrium equation was established. Based on the distribution law of effective friction coefficient of grain pile, a calculation method of static spatial pressure field of warehouse storage materials was proposed. The vertical pressure and the horizontal pressure at any point of the bulk material of warehouse can be calculated by this calculation method. The results obtained in this study are compared with the results of the real warehouse test, the warehouse specification and numerical simulation results of the FLAC^(3D). The results show that the vertical pressure and horizontal pressure obtained by this method increase with the increase of the storage depth, which is basically consistent with the warehouse specification. The vertical pressure on the same horizontal plane gradually decreases from the center of the storage to the confined warehouse wall, which is consistent with the distribution law of the real warehouse test results and FLAC^(3D)numerical simulation results. This study can provide a theoretical support for solving the problems of overpressure and arch of grain storage in bulk storage space pressure field of warehouse and the safety of structure design of grain storage.

关 键 词：平房仓 计算模型 储料压力 空间压力场 竖向压力 水平压力 

分 类 号：TU249[建筑科学—建筑设计及理论]