桩侧与土侧采用摩擦约束，桩底和土底采用tie约束，计算地应力时，第一步就不收敛，警告信息里全是

If significant clearance/overclosure exists between surface pair (assembly__t45_anpo-1-2_sn,assembly__t45_anpo-1-2_m) and the master surface does not have rotational degrees of freedom, adjustment is recommended for correct enforcement of the tie constraint

Slave surface assembly__t46_anpo-1-2_sn is a node-based surface used with surface to surface approach. In order to obtain improved stress accuracy with this approach, an element-based surface should be used instead.

麻烦各位指点一下该如何解决，不胜感激