高桩码头-岸坡相互作用有限元数值模拟

高桩码头-岸坡体系的相互作用机理一直是困扰工程界的难题。基于某突堤的现场勘察资料和土体参数,建立了高桩码头与岸坡相互作用的二维平面应变问题和三维空间问题的弹塑性有限元模型,采用与M ohr-Co lum n准则匹配的D rucker-P rager准则作为土的屈服准则,分析了桩基-岸坡体系的变形机理,同时,针对二维和三维情况各种工况组合进行了对比分析,并结合土体参数和现场测斜资料,分析了高桩码头-岸坡体系的变形规律,并指出了影响桩、梁和岸坡体系变形的主要因素,并建议了合理的治理方案。

Finite Element Analysis of Interaction Between Piled-Wharf and Slope

The interaction mechanism of the piled wharf and slope system is a big problem to the engineers.A numerical elastoplastic finite element model including 2D plain strain problem and 3D space problem is developed based on the reconnaissance data and the parameters of soil.Drucker-Prager criterion matching with Mohr-Column criterion is used as the yielding criterion of soil.Based on the model,the deformation mechanism of the pile-slope system is analyzed.Simultaneously,the conclusions of the 2D and 3D calculations under the different working conditions are compared and analyzed.Based on the survey data of the parameters and deformation of the soil,the deformation of the piled wharf and slope system is analyzed and the main influence factors to the displacement and deformation of the piles,beams and slope system are indicated.Some reasonable methods are finally proposed to deal with such problems.