基于可反映桩基荷载传递性状的“套叠”式桩周土变形模式和弹性理论，将等直径部分和扩径体部分桩周土分段建立位移方程，推导了桩身带有扩径体的非刚性和刚性DX抗拔桩的荷载-位移关系的解析解。

Based on the elastic theory and the overlapped-form strain mode of the soil, the paper deals with an analytical solution for the load-displacement relationship of non-rigid and rigid DX pullout pile.

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