山东建筑大学学报2024，Vol.39Issue(2)：115-121,7.DOI:10.12077/sdjz.2024.02.016
储煤筒仓内钢制螺旋溜槽脱落事故分析
Analysis of steel spiral chute detachment accidents in coal storage silos
摘要
Abstract
Spiral chutes play a crucial role in preventing the fragmentation of lump coal in bunkers,yet accidents during their application are not rare.This paper analyzes the reasons behind the detachment of a steel spiral chute within a coal storage silo,on the basis of site investigation,through detections,finite element analysis and theoretical calculation.The results show that the improper load value is the direct cause of this accident,while the frame and chute structure selection and connection construction is not reasonable is the indirect cause.The chute bracket is suitable for polygonal frame structure,can also be added to the inter-frame support system;The structure should preferably utilize U-shaped or L-shaped chutes with a narrower base plate width;When calculating,the gravity of all stored materials within a pitch range projected by the chute bottom plate should be taken and the dynamic pressure during discharging should be considered;The calculation model of spiral chute should be calculated according to the space spiral curved beam,and the influence of torque should be fully considered.关键词
螺旋溜槽/计算模型/荷载取值/结构选型/事故分析Key words
spiral chute/calculation model/load value/structure selection/accident analysis分类
建筑与水利引用本文复制引用
周学军,门洪滔,王振,蔡雨桐,田素恩..储煤筒仓内钢制螺旋溜槽脱落事故分析[J].山东建筑大学学报,2024,39(2):115-121,7.基金项目
国家重点研发计划资助项目(SQ2020YFF0426523) （SQ2020YFF0426523）
国家自然科学基金项目(52278507) （52278507）
山东省住房和城乡建设厅科技计划项目(2020-K7-3) （2020-K7-3）
2023年度山东省重点扶持区域引进急需紧缺人才项目(鲁发改动能办(2023)867号) （鲁发改动能办(2023）
