重力式锚碇基础在计算中通常简化为浅基础，并不考虑深度效应的影响，较为不经济。泰州大桥南锚碇沉井埋置深度达42 m，为将深度效应考虑到锚碇稳定性计算中，故采用有限元法对泰州大桥南锚碇沉井基础的深度效应进行研究。通过计算对比不同埋置深度条件下锚碇基础在施工期及运营期内位移和转角的变化，可知深度效应对锚碇基础承载力的增强作用十分明显。

The foundation of the gravity anchorage is usually simplified as shallow foundation, which is diseconomy when the depth effect is neglected. Because the embedded depth of caisson foundation south anchorage of Taizhou Bridge is 42 m, FEM(finite element method) is utilized to research the depth effect of the caisson foundation in the stability computing. It is clear that the depth effect improves the bearing capacity of anchorage foundation dramatically by comparing the variation of the displacement and the rotation angle of the anchorage foundation in the periods of construction and operation.