The expansion joints on both sides of dam block no. 26 exhibit an abnormal behavior after 12 years' operation.

黄坛口大坝26号坝段二侧伸缩缝在蓄水运行多年后发生异常变形。

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22 dam block as a typical object, a stress recheck was conducted to demonstrate the current safety of the pre-stressed pier using a 3-d finite element method.

为论证当前预应力闸墩的安全性，选取22号坝段预应力混凝土闸墩作为典型对象，采用三维有限元计算方法进行应力复核计算。

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