矩形多联渡槽计算分析的梁壳复合有限条法  

Computation and analysis of rectangular aqueducts based on beam-shell compound strip method

作　　者：徐伟[1,2] 王博[2] 

机构地区：[1]郑州大学土木工程学院,郑州450001 [2]郑州大学水环学院,郑州450001

出　　处：《水力发电学报》2010年第5期153-158,共6页Journal of Hydroelectric Engineering

基　　金：河南省基础与前沿技术研究计划项目(082300440070);河南省科技攻关资助项目(0424470011)

摘　　要：基于能量原理和结构动力学原理,采用有限壳条离散渡槽槽身、空间梁单元离散槽身纵梁、加劲肋和拉杆,推导得出矩形多联渡槽静力计算和自由振动分析的梁壳复合有限条法。经算例验证,梁壳复合有限条法单元划分数目少,数据处理简单,具有良好的求解精度和效率。A method of beam-shell compound strips is proposed to analyze the aqueducts of rectangular crosssection,in which finite shell strips combined with bending strips and plane strips are adopted for discretization of the aqueduct body,and spatial beam elements for the transverse stiffener.Stiffness matrix and load matrix are derived by the principle of minimum potential energy,and free vibration function derived by the principle of structural dynamics.A case study is given to show the accuracy,efficiency and applicability of the proposed method.

关 键 词：水工结构 梁壳复合有限条 能量原理 渡槽 振动方程 

分 类 号：TV31[水利工程—水工结构工程]