WANG Bi-ning1, WANG Jun-min1, AN Fu-li1, et al. FINITE ELEMENT ANALYSIS AND STRENGTH EVALUATION OF THE WALL DEFORMATION FOR A LARGE CLARIFIED WATER POND[J]. Thermal power generation, 2009, 38(10): 33-37.
WANG Bi-ning1, WANG Jun-min1, AN Fu-li1, et al. FINITE ELEMENT ANALYSIS AND STRENGTH EVALUATION OF THE WALL DEFORMATION FOR A LARGE CLARIFIED WATER POND[J]. Thermal power generation, 2009, 38(10): 33-37.DOI:
大型澄清水池池壁变形有限元分析及强度评定
摘要
某电站300MW机组1000m3大型钢制薄壳澄清水池(缓冲水池)池壁壳体在满水位工况下严重变形
有失稳垮塌的危险。对此
采用ANSYS有限元软件建立了水池三维有限元模型
对应力强度进行了计算分析
并依据JB4732-1995《钢制压力容器——分析设计标准》进行了应力强度评定。结果表明
澄清池筒体与锥壳连接区域、立柱与锥壳连接区域没有整体补强
造成水池局部强度不足
导致应力超标
局部变形较大。
Abstract
Serious deformation of pond wall has appeared under full water level in a large clarified water pond of 1 000 m3 made out from steel thin-sheel for 300 MW unit in one power plant
having risk to lose stability and collapse.For this
a three-dimmensional finite element model of said pond has been established by using the finite element software ANSYS
and the stress strength being calculated and analysed
and the stress shtrength being evaluated according to JB4732-1995 《steel made pressure vessel analysis and design》.Results show that the integral reinforcement in joint area of barrel shell and conical shell
as well as in joint area of column and conical shell
haven't been carried out
resulting in local insufficient strength of the water pond