摘要
针对钢衬钢筋混凝土压力管道,结合弹性模量缩减法和梁系有限元法,建立了结构极限承载力分析的弹性迭代法。弹性迭代法继承了弹性模量调整法原理简单、应用方便的优点;同时,利用梁系有限元能大大减少单元和自由度数,在保持精度的同时能显著提高计算效率。算例分析表明,弹性迭代法计算精度良好,可应用于钢衬钢筋混凝土压力管道结构的极限承载力分析中。
An elastic iterative method for limit analysis of steel lining reinforced concrete penstock is presented by using the elastic modulus reduction method and beam finite element method. While inheriting the merits of simplicity and practicality of the elastic modulus adjustment procedures, and using beam finite element method to significantly reduce the numbers of element and degrees of freedom, the proposed method can improve the computational efficiency while keeping the accuracy. Numerical examples show that the method can achieve satisfying accuracy in the limit analysis of steel lining reinforced concrete penstock.
出处
《水力发电》
北大核心
2012年第4期17-20,共4页
Water Power
基金
国家自然科学基金资助项目(51168003
51169003
50909021)
广西壮族自治区主席基金资助项目(2010GXNSFD169008)
广西研究生教育创新计划项目(GXU11T32580)
关键词
钢衬钢筋混凝土压力管道
极限承载力
曲梁模型
弹性模量缩减法
steel lining reinforced concrete penstock
ultimate bearing capacity
curved beam model
elastic modulus reduction method
