无论从坝体的永久位移还是筋层轴力分布角度，坝内筋端的铰结连接方式要好于自由连接方式。
Whether permanent displacement of dam or the axial forces of anchor, the rigid attended mode is better than the free attended mode.
在自由端，应力为零而位移加倍。
However at the free end, displacement is double and strain is zero.
由螺旋器控制可以精确地确定自由端的位移量；
Displacement can be accurately confirmed by controlling the screw.
接头两端可任意偏转，便于自由调节轴向或横向位移。
Both ends of the joint can be arbitrary deflected for free adjustment of axial or lateral displacement.
同时，本文分析了位移波和应力波在固定端、自由端和弹性支承端的反射特点。
At the same time, the reflection characters of strain wave and displacement wave are analyzed at the fixed end, free end and elastic bearing end.
接头两端可任意偏转，便于自由调即轴向或横向位移。
Both ends of the joint can be arbitrary deflected for free adjustment of axial of lateral displacement.
接头两端可任意偏转，便于自由调即轴向或横向位移。
Both ends of the joint can be arbitrary deflected for free adjustment of axial of lateral displacement.
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