考虑散体拱效应的筒仓仓壁侧压力计算方法  

Calculation method of side pressure of silo wall considering horizontal arching effect in bulk storage

作　　者：陈家豪[1,2] 谭晗洋 陈桂香 韩阳[1] 何佳欢[1] 刘超赛 CHEN Jiahao;TAN Hanyang;CHEN Guixiang;HAN Yang;HE Jiahuan;LIU Chaosai(College of Civil Engineering,Henan University of Technology,Zhengzhou 450001,China;Henan Key Labratory of Grain Storage Facility and Safety,Henan University of Technology,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6期111-117,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：散体储料中水平拱对筒仓仓壁侧压力的影响较大,以筒仓仓壁面、平衡拱面和滑动面所包围的储料作为隔离体模型探究仓壁侧压力,对隔离体中单位微元受力分析,提出了考虑粮拱效应的筒仓仓壁侧压力计算方法,并将其仓壁侧压力计算结果与其他未考虑粮拱效应理论、有限元结果、实仓试验结果进行对比分析。结果表明:相较于其他未考虑粮拱效应的理论、有限元结果,该计算结果略大,说明粮拱效应会使仓壁侧压力有一定程度的增大;仓壁侧压力计算结果与实仓试验结果基本吻合,一定程度上验证了该计算方法的有效性。研究结果可为解决筒仓结拱、筒仓超压等问题提供理论依据。In order to explore the influence of horizontal arch effect in bulk storage on silo wall side pressure,a model was established considering the horizontal arch effect in the storage material.The model is part of the material storage which was surrounded by the silo wall,the sliding surface and the plane composed of balanced arches.The unit micro-element was selected from the model to force analysis.The calculation method of the lateral pressure in the silo wall was proposed,which was considered the horizontal arch effect.The results from this study were analyzed and compared with other theories,finite element analysis,and test value.The results showed that the calculations from this study were slightly larger than other theoretical and finite element results,indicating that grain arch effect could increase the side pressure of the silo wall to a certain extent.The calculated results of this study were basically consistent with the test value,suggesting that the calculation method adopted in this study was effective.In the present study,the calculation method of silo wall side pressure considering arch effect is presented,which makes the side pressure of silo wall more accurate and provides theoretical support for silo design.

关 键 词：拱效应 平衡拱面 滑动面 仓壁侧压力 竖向压力 侧压力系数 

分 类 号：TU249[建筑科学—建筑设计及理论]