面板堆石坝周边缝中“F”型铜止水变形特性研究

Study on the deformation characteristics of the F-type copper water stop of peripheral joints of concrete faced rockfill dam

为提高面板堆石坝周边缝的防渗性能,探究“F”型铜止水的变形规律。采用自制的加载平台,进行了不同沉降、张开位移下铜止水的剪切试验,得到了铜止水的失效位移基本关系式,揭示了施加张开、沉降位移后铜止水变形失稳的基本变形规律,同时分析了沉降位移、张开位移、结构尺寸及结构型式等因素对铜止水变形特性的影响。

To improve the anti-seepage performance of peripheral joints of concrete faced rockfill dam and explore the deformation law of F-type copper water stop,based on loading platform,mechanics simulation test is carried out.The relationship between deformation and shear failure displacement of copper water stop is obtained by fitting.It is revealed that the greater the expanding and settlement displacement are,the earlier the buckling instability of copper water stop appears.The influencing factors of allowable deformation of copper water stop is also analysed,for reference.