摘要
拱坝常用的泄洪深孔承受的荷载大,孔口区域结构应力影响因素多且关系复杂,需在孔口周围适当配筋改善孔口结构的应力状态,确保大坝施工及运行期安全。以大岗山水电站拱坝为例,建立了三维线弹性有限元应力分析模型。在孔口应力有限元分析基础上,采用子模型法对深孔配筋进行精细模拟计算,依据计算结果进行了深孔孔口配筋设计。通过与类似工程的对比分析,表明所采用的计算方法是合理的。
The bearing load of arch dam＇s deep outlet is large and the influencing factors to the structural stress are multiple with complex relation,so reinforcement measures should be adopted to improve the stress state of outlet structure for ensuring dam safety in the construction and operation periods. Taking Dagangshan Hydropower Station as a case,a 3D linear elastic FEM for stress analysis is established. On the basis of finite element analysis on the outlet stress,fine simulation and calculation for deep outlet reinforcement are conducted by sub-model. Compared and analyzed with other similar projects,it is shown that the adopted calculation method is reasonable.
出处
《人民长江》
北大核心
2014年第22期65-68,共4页
Yangtze River
关键词
子模型法
深孔
配筋
拱坝
大岗山水电站
sub-model method
deep outlet
reinforcement
arch dam
Dagangshan Hydropower Station
