摘要
以某深覆盖层土石坝工程为研究对象,开展水库运行期坝体及坝基应力变形研究,分析不同工况下的顺河向位移、竖向位移、最大主应力、最小主应力等结果。结果表明:随着上下游水头差的增大,顺河向位移随之增大,竖向位移均出现在坝体中部约为2/3坝高处,竖向位移分布符合土石坝竖向变形的一般规律。坝体的大、小主应力分布均为压应力,满足深覆盖层土石坝的应力特征一般规律。
In this paper,a deep overburden earth rock dam project is taken as the research object.The stress and deformation of dam body and dam foundation during reservoir operation period are studied.The results of along river displacement,vertical displacement,maximum principal stress and minimum principal stress under different working conditions are analyzed.The results show that:with the increase of water head difference between upstream and downstream.,the displacement along the river increases.And the vertical displacement appears in the middle of the dam,which is about 2/3 of the dam height.The vertical displacement distribution conforms to the general law of vertical deformation of earth rock dam.The distribution of large and small principal stress of the dam body is compressive stress,which meets the general law of stress characteristics of deep overburden earth rock dam.
作者
郑洲
Zheng Zhou(Shanghai Jingjing Water Conservancy Engineering Design Co.,Ltd.,Shanghai 200000,China)
出处
《陕西水利》
2022年第1期23-25,共3页
Shaanxi Water Resources
关键词
深覆盖层
土石坝
变形
应力
Deep overburden
earth rock dam
deformation
stress
