中文摘要：

板格形导管架桩基码头是适用于深水域软土地基的新型港口与海岸工程结构。该结构由预制的板格形导管架及桩基构成，承载特性和破坏模式复杂。假定码头结构发生倾覆失稳时，转动点位于前桩轴线上，且距导管架底面距离为L。除结构的自身重量外，综合考虑板格形导管架与周围土体间的摩擦力、桩侧摩阻力、桩侧水平土抗力等，对结构进行极限状态受力分析，建立基于假想支撑点的稳定性分析模型，并通过强度折减法进行计算，求取安全系数。以天津滨海沿岸水文地质条件为背景，利用ABAQUS有限元分析软件，建立板格形导管架桩基码头三维弹塑性有限元模型进行稳定性分析，并与简化方法进行比较。结果表明，通过简化计算方法得到的安全系数与有限元结果较为吻合。

英文摘要：

The plate panel wharf with jacket and pile foundations is a new type of structure applied in port and coastal engineering. The structure is composed of prefabricated plate panel jacket and piles, of which the working mechanism and failure pattern are unclear. It is assumed that the instability mode is the rotation around the imaginary supporting point which is located on the axis of the front pile, and that the vertical distance between the imaginax7 supporting point and the bottom line of the jacket is expressed as L. Through analy- sis of forces on the structure in limit state including friction between plate panel jacket and surrounding soil, shaft friction of pile, later- al bearing capacity of pile, gravity of the structure, elc. , a simplified calculation method for stability is set up. Safety factor is calcu- lated by strength reduction. Considering the hydrogeological conditions of Tianjin Port, a 3D elastic-plastic finite element model is es- tablished for stability analysis of the pile-supported plate panel jacket wharf, so that the simplified calculation model and calculation formulas for soil forces, etc. can be tested by comparing with the results calculated by FEM. In conclusion, the results calculated by the simplified calculation method and FEM are consistent.