abaqus的embedded约束？

我在建立地下隧道盾构管片的模型，管片采用三维实体单元建模，但是为了简化，管片间的螺栓使用的是二维桁架单元简化，桁架单元会斜穿两个面，一直计算不收敛，然后报这个警告For two-dimensional models, if a non-unity thickness is specified for two-dimensional solid elements and these elements are involved in an interaction such as contact, the same thickness should be specified for the out-of-plane thickness of the corresponding surface under *surface interaction.是哪里设置有问题或者讲究吗?