钢筋混凝土水泥筒仓损伤检测与有限元分析  

Structural Damage Detection and Finite Element Analysis of Reinforced Concrete Cement Silo

作　　者：卢亦焱[1] 肖羚玮 Lu Yiyan;Xiao Lingwei(School of Civil Engineering,Wuhan University,430072,China)

机构地区：[1]武汉大学土木建筑工程学院,430072

出　　处：《特种结构》2018年第6期60-65,共6页Special Structures

基　　金：湖北省技术创新专项重大项目(2016AAA025)

摘　　要：通过现场结构检测,分析钢筋混凝土筒仓的当前应力状态与结构损伤状态。基于ABAQUS有限元软件,在储料荷载、温度荷载、荷载组合三种作用条件下,采用混凝土塑性损伤模型研究仓壁环向轴力沿高度的分布规律、底板环向轴力沿径向分布规律,结果表明:在荷载组合作用下,仓壁环向轴力在底板上方4.895m处达到2820kN/m; HLA环梁附近达到混凝土极限抗拉应力,底板的环向轴力最大值为1557kN/m。结合有限元结果与施工情况,分析底板贯穿裂缝成因,提出了加固建议,供今后类似工程参考。Through structural testing, the present stress state and damage state of reinforced concrete silo were analyzed. The concrete damage plasticity model, established on ABAQUS, was used to analyze the vertical distribution of silo wall circumferential stress and the radial distribution of the principal stress under three conditions.The results showed that the wall circumferential stress reached the maximum value 2820 kN/m at 4. 895 m above the floor, and the stress in HLA ring beam reached concrete ultimate tensile stress and the maximum value of the bottom plate circumferential stress reaches 1557 kN/m. Combined with the results of finite element calculation and construction organization, the causes of structural damage were analyzed, and the reinforcement suggestions were put forward, which can be refferenced by similar projects in the future.

关 键 词：钢筋混凝土筒仓 有限元分析 结构损伤 结构加固 

分 类 号：TU375[建筑科学—结构工程]