摘要
拱轴线形式是上承式肋拱渡槽结构设计的重要内容,分析其对地震区渡槽结构抗震性能的影响具有重要意义。运用有限元软件ANSYS,分别用不同拱轴线形式对东滑峪上承式肋拱渡槽进行静力分析、模态分析和瞬态动力分析,根据主拱圈关键位置的横槽向位移和内力变化规律,确定在静力荷载单独作用及静力荷载和地震荷载共同作用下,渡槽结构的最优拱轴线形式均为悬链线形。
The arch axis form is an important parameter in the design of deck type rib arch aqueduct, and the analysis of influence of arch axis form on seismic performance of arch aqueduct has great significance to the design of arch aqueduct in seismic region. Taking Donghuayu Aqueduct as an study case, the finite element software ANSYS is used to conduct the static, modal and transient dynamic analyses of aqueduct with different arch axis forms. The optimal arch axis form is determined according to transverse groove displacement and internal force changes of the arch in key portion. Whether under the acting of single static load or combined static and seismic loads, the optimal arch axis form is the catenary arch axis.
出处
《水力发电》
北大核心
2013年第11期24-27,37,共5页
Water Power
关键词
抗震性能
上承式肋拱渡槽
拱轴线形式
动力分析
seismic performance
deck type rib arch aqueduct
arch axis form
dynamic analysis
