预应力混凝土多纵梁式渡槽结构布置优化设计研究  

Research on Structural Arrangement Optimization Design of Prestressed Concrete Multi-longitudinal-beams Aqueduct

作　　者：王兴超[1] 兰文改[1] 赵顺波[1] 

机构地区：[1]华北水利水电学院,河南郑州450011

出　　处：《华北水利水电学院学报》2008年第6期15-18,共4页North China Institute of Water Conservancy and Hydroelectric Power

基　　金：河南省高等学校创新人才培养工程培养对象资助项目(豫教高[2004]294号)

摘　　要：结合南水北调中线左岸排水工程预应力混凝土多纵梁式渡槽结构受力特点,提出了增大渡槽跨中区域横向与纵向刚度减小各纵梁竖向挠度差值的优化设计理念,通过梁壳单元三维有限元数值计算,对比分析了传统纵、横梁均布方案与优化设计方案的内力和位移,验证了该设计理念的先进性和有效性;同时结合渡槽三维实体有限元分析,在明确优化方案内力和变形规律的基础上,建立了改进的预应力混凝土多纵梁式渡槽内力计算简化模型,对今后同类工程的设计具有重要的参考价值.Combining with the loading behaviors of prestressed concrete aqueduct with multi-longitudinal-beams in left-bank-drainage subject of the Central Route Project of Water Transfer from South to North,the new design ideas of structural optimization are proposed to reduce the difference of vertical deflection between the longitudinal beams by enhancing the horizontal and longitudinal stiffness in central-region of aqueduct.By 3-D beam-shell element numerical calculation,the internal force and displacement of tra...

关 键 词：渡槽 多纵梁 预应力混凝土 结构优化 有限元分析 

分 类 号：TV672.3[水利工程—水利水电工程]