加劲环式压力管道非线性有限元分析及稳定性计算  

Nonlinear Finite Element Analysis and Stability Calculation of Stiffened Penstocks

作　　者：马文亮[1] 张喜东 周国燕[1] 张建华[1] 

机构地区：[1]华北水利水电学院,河南郑州450011 [2]中电投平顶山鲁阳发电有限责任公司,河南平顶山467312

出　　处：《华北水利水电学院学报》2010年第4期36-38,共3页North China Institute of Water Conservancy and Hydroelectric Power

基　　金：华北水利水电学院青年科研基金项目(HSQJ2009004);河南省教育厅自然科学基础研究计划项目(2010B560009)

摘　　要：采用非线性分析理论,对加劲环式压力管道进行了非线性有限元分析,给出了加劲环式压力管道的应力分布规律和混凝土开裂次序,分析结果为加劲环式压力管道的设计和施工提供了参考依据.并采用半解析有限元法对加劲环式压力钢管进行了抗外压稳定性计算分析,结果表明,该加劲环式压力管道是安全可靠的.In this paper, nonlinear analysis theory is proceeded for stiffened penstock,law of the stiffened penstock＇s stress and cracking order of the concrete is deduced. The analysis result supply reference for design and construction of stiffened penstock. The problem of calculating stiffened penstock＇ s stability under external pressure is researched with semi-analytical finite element method. The analysis result indicates that, the stiffened penstock is safe and reliable.

关 键 词：加劲环 非线性分析 稳定性 半解析有限元法 

分 类 号：TV335[水利工程—水工结构工程]