The preious studies on suction embedded plate anchor (SEPLA) were mainly in uniform clay and the installation process of the plate anchor was not considered. The pullout capacity for pre-embedded and considering installation process of circular plate anchor in normally consolidated (NC) clay has been inestigated numerically using elasto-plastic large deformation finite element method. In the large deformation analysis, remeshing and interpolating technique with small strain (RITSS) model has been used. This technique allows the plate anchor to be adanced by seeral diameters, thus achieing steady-state conditions. It is found that the pullout capacity factors with ented base are lower than that with attached base when soil strength gradient k＞0.5 kPa/m. The separation condition for uniform clay is also suitable to the NC clays. The pullout capacity factors for considering installation process are lower than those for pre-embedded anchors.%以往对吸力沉箱锚板的抗拔承载力研究多集中在均质土中,并且很少考虑安装过程对承载力的影响. 为此采用弹塑性大变形有限元法研究了该类锚板在正常固结黏土中的承载力,并考虑了安装过程对承载力的影响. 在大变形分析中采用了RITSS技术,从而可以模拟锚板在土中的大位移过程. 研究结果表明,在土体强度梯度k＞0.5 kPa/m时,锚板底部与土体可以分开情况得到的承载力系数要低于不可分开情况下的承载力系数. 锚板与土分离的条件与均质土中的分离条件基本相同. 考虑安装过程得到的承载力要低于预置锚板的承载力.
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