钢筋混凝土板偏心受压破坏全过程非线性分析  

The Nonlinear Analysis for Compressive Failure of Reinforced Concrete Slab under Eccentric Compressive Load

作　　者：朴哲浩[1] 宋力[2,3] 宋万增[2,3] 乔瑞社[2,3] 

机构地区：[1]水利部水利建设管理总站,北京100038 [2]黄河水利科学研究院工程力学研究所,郑州450003 [3]水利部堤防安全与病害防治工程技术研究中心,郑州450003

出　　处：《南水北调与水利科技》2010年第5期144-148,共5页South-to-North Water Transfers and Water Science & Technology

基　　金：中央级公益性科研院所基本科研业务费专项资金资助(HKY-JBYW-2008-16);黄河水利科学研究院科技发展基金(黄科发200708)

摘　　要：针对水闸安全鉴定中结构安全评价的核心问题,板构件极限承载力的计算,设计了实验模型并开展了相关实验。采用钢筋混凝土非线性有限元分析理论,建立了考虑混凝土材料非线性、钢筋与混凝土黏结滑移关系、结构状态非线性的分离式有限元模型。针对混凝土、钢筋本构关系和钢筋与混凝土的黏结滑移关系,根据试验进行取值,并针对求解控制中的关键参数结合工程实际进行了试算,得到了实用的参数取值。基于通用有限元程序ANSYS12.0平台,开展了仿真模拟计算,并将计算结果与试验结果从裂缝分布、极限承载力、挠度3方面进行了对比,证明了分析的正确性。According to core issues of safety evaluation in sluice structure,it designed an experimental model and carried out some experiments to study the calculation of ultimate bearing capacity of slAbs.In the research,nonlinear finite element analysis theory of reinforced concrete was adopted,and a separated finite element model of reinforced concrete was built,considering material nonlinearity of concrete,bond-slip relationship between steel bars and concrete,the state nonlinear of structure.Aiming at the respective strain-stress relationship and bond-slip relationship between concrete and steel bar,the paper researched the key parameters combined with practical engineering and experiment,and obtained practical parameters.Based on ANSYS12.0 platform of general finite element program,a simulation calculation was developed.Moreover,the calculation results shows that the analysis is correct compared with experiment results from three aspects,including fracture distribution,ultimate bearing capacity and deflection.

关 键 词：水闸安全鉴定 偏心受压 钢筋混凝土板 破坏全过程 非线性分析 

分 类 号：TV314[水利工程—水工结构工程] TU375[建筑科学—结构工程]