水电站地面厂房结构的动力分析与设计优化  

Dynamic Analysis and Design Optimization of Powerhouse Structure for Hydropower Projects

作　　者：韩爱萍[1] 陈婧[2] 马震岳[2] 

机构地区：[1]新疆水利水电勘测设计研究院,新疆乌鲁木齐830000 [2]大连理工大学建设工程学部水利工程学院,辽宁大连116024

出　　处：《水电能源科学》2010年第7期70-73,53,共5页Water Resources and Power

基　　金：国家自然科学基金资助项目(50679009);辽宁省教育厅重点实验室科研基金资助项目(2008S045)

摘　　要：针对大中型水电站地面厂房振动特性分析复核和抗震设计,以地处高地震区的某水电站地面厂房为例,利用有限单元法建立数值模型,分析了厂房结构的整体动力特性。因厂房上部为单层框架结构,刚度相对较低,本文重点分析了其自振特性和与机组振源的共振复核,对以动态优化设计为目标的结构修改进行了探讨,并就机墩结构的刚度和强度进行了计算分析和振幅复核。最后对厂房结构的抗震问题进行了研究,所得结论可为大中型水电站地面厂房结构的抗振设计提供有益参考。Taking powerhouse of hydropower station located in seismic region for an example,numerical simulation model based FEM of the powerhouse structure is established to check the vibration property analysis and seismic resistance design for large hydropower station.Top of powerhouse is single-layer frame structure and the rigidity is week relatively.So,this paper analyzes the natural vibration properties and resonance check with vibration source of generating set in detail.The modified structure is discussed for achieving the goal of dynamic optimization design.Rigidity and strength of turbine pier structure are calculated and the vibration amplitude is checked.Finally,the seismic resistance property of powerhouse structure is studied.The results provide theoretical basis for optimizing dynamic characteristics of powerhouse structure and improving anti-vibration design for large hydropower station.

关 键 词：大中型水电站 地面厂房 厂房结构 动力分析 设计优化 Structure Design Optimization Analysis 振动特性分析 复核 动态优化设计 有限单元法 自振特性 数值模型 某水电站 框架结构 抗震设计 抗振设计 计算分析 机墩结构 

分 类 号：TK79[动力工程及工程热物理—流体机械及工程] TV7[水利工程—水利水电工程]