佛湾水库砌石拱坝三维有限元分析
|
摘要
以佛湾水库为例,针对拱坝应力状态比较复杂的问题,采用三维有限元法计算了单曲砌石拱坝在多种荷载组合作用下的坝体应力及变形。结果表明,坝体的应力及变形均符合一般规律,且坝体变形较小、坝体上游面拱端处拉应力较大、坝体与坝基接触处存在应力集中现象,经有限元等效应力计算后,其结果在规范允许的范围之内,从而验证了设计方案的可行性。
Aiming at complex stress status of arch dam in Fowan reservoir,three-dimensional finite element method is adopted to simulate the stress and deformation of single curvature stone masonry arch dam under the multi-load combination action.The results show that the stress and deformation of the dam body accord with the general rule of finite element method calculation;the dam deformation is small;the tensile stress of dam abutment upstream surface is larger and the stress concentration phenomenon exists in the contact point between the dam and the foundation;but through the calculation of finite element method equivalent stress,the stress result is within the permitted scope of criterion.Thus it verifies the feasibility of the arch dam design scheme.
Aiming at complex stress status of arch dam in Fowan reservoir,three-dimensional finite element method is adopted to simulate the stress and deformation of single curvature stone masonry arch dam under the multi-load combination action.The results show that the stress and deformation of the dam body accord with the general rule of finite element method calculation;the dam deformation is small;the tensile stress of dam abutment upstream surface is larger and the stress concentration phenomenon exists in the contact point between the dam and the foundation;but through the calculation of finite element method equivalent stress,the stress result is within the permitted scope of criterion.Thus it verifies the feasibility of the arch dam design scheme.
引文
[1]叶文明,武亮,姚激,等.厅子塘水电站砌石拱坝结构三维有限元分析[J].云南水力发电,2007,23(6):47-51.
[2]朱振泱,周磊,朱岳明.砌石拱坝上游拱冠梁底部拉应力仿真分析[J].南水北调与水利科技,2009,7(5):52-54,69.
[3]贵州省水利厅,水利部湖南水利水电勘测设计研究院,水利部福建水利水电勘测设计研究院,等.浆砌石坝设计规范(SL25-2006)[S].北京:中国水利水电出版社,2006.
[4]张伟,李宏伟,韩晓凤.高拱坝整体安全度研究[J].水电能源科学,2005,23(4):44-47.
[5]中国地震局地球物理研究所,中国地震局工程力学研究所,中国地震局地质研究所,等.中国地震动参数区划图(GB18306-2001)[S].北京:中国标准出版社,2001.
[6]林继镛.水工建筑物(第四版)[M].北京:中国水利水电出版社,2006.
[7]朱伯芳,高季章,陈祖煜,等.拱坝设计与研究[M].北京:中国水利水电出版社,2002.
[8]周荣刚.有限元等效应力法在高拱坝应力分析中的应用[D].杭州:浙江大学,2008.
[2]朱振泱,周磊,朱岳明.砌石拱坝上游拱冠梁底部拉应力仿真分析[J].南水北调与水利科技,2009,7(5):52-54,69.
[3]贵州省水利厅,水利部湖南水利水电勘测设计研究院,水利部福建水利水电勘测设计研究院,等.浆砌石坝设计规范(SL25-2006)[S].北京:中国水利水电出版社,2006.
[4]张伟,李宏伟,韩晓凤.高拱坝整体安全度研究[J].水电能源科学,2005,23(4):44-47.
[5]中国地震局地球物理研究所,中国地震局工程力学研究所,中国地震局地质研究所,等.中国地震动参数区划图(GB18306-2001)[S].北京:中国标准出版社,2001.
[6]林继镛.水工建筑物(第四版)[M].北京:中国水利水电出版社,2006.
[7]朱伯芳,高季章,陈祖煜,等.拱坝设计与研究[M].北京:中国水利水电出版社,2002.
[8]周荣刚.有限元等效应力法在高拱坝应力分析中的应用[D].杭州:浙江大学,2008.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心