某水电站溢洪道闸室堰体厚度优化分析  

Optimization of weir thickness of spillway sluice chamber

作　　者：秦亚斌[1,2] 张振华[1,2] 朱大勇[1,2] 

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009 [2]土木工程结构与材料安徽省级实验室,安徽合肥230009

出　　处：《水利水运工程学报》2016年第2期104-110,共7页Hydro-Science and Engineering

摘　　要：溢洪道闸室堰体是闸室的重要组成部分,其厚度对闸室结构的整体安全性及工程投资均有较大影响。以往对闸室结构的优化大多针对主要构件的尺寸,而鲜见在闸室结构主要构件(如闸墩、牛腿及吊孔等)尺寸确定的前提下,单独对闸室堰体厚度进行优化分析。考虑6种堰体尺寸方案,通过ANSYS软件分别建立不同工况下闸室的有限元计算分析模型,并进行三维有限元应力分析。将开挖体积作为设计变量,分别以牛腿、吊头和墩的应力最小为目标,建立单变量多目标的闸室堰体厚度优化数学模型,在充分考虑闸室各主要混凝土构件抗拉强度约束条件的基础上,采用分层序列法对溢洪道闸室堰体厚度进行优化计算,得到堰体优化尺寸,为该溢洪道闸室的结构设计提供依据。The weir of the spillway chamber is an important part of the sluice chamber,of which the thickness has a great influence on the safety of structures in spillway sluice chamber design as well as on the project investment.The optimization of the weir structures almost relies on the determination of the sizes of the main components,and there is rare optimization of the thickness of the sluice chamber weir while the main component size of the chamber is confirmed. Considering six kinds of weir body shapes,we establish a finite element model of different solutions by the software ANSYS,and then do the analysis of the stress of the structure in this study. The optimization takes the excavated volume as the design variables,and takes the stress of bracket,clevis and pier as the single objective to establish an optimization model. Then we consider the stress intensity,and apply the Lexicographic method to optimization design of the weir thickness and then get the optimal size of the sluice chamber weir. The study provides a basis for the design of the spillway of the sluice chamber structure. The research method and design idea can provide a reasonable reference for other similar spillway sluice chamber weirs.

关 键 词：溢洪道闸室 堰体厚度 ANSYS 有限元 分层序列法 

分 类 号：TV651.1[水利工程—水利水电工程]