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为深入了解高桩码头结构体系在最不利工况下的被动桩特性及破坏机制,考虑桩土共同作用、地基土弹塑性性质、桩土界面接触不连续特性以及码头结构材料非线性,采用有限元方法研究了码头结构在最不利工况下的受力变形特性及塑性铰分布规律,一定程度上为施工设计提供参考.计算结果表明:岸坡变形导致码头结构内力分布明显地向海侧调整,从而引起靠岸侧桩基产生较大拉力,处于不利工作状态;靠岸侧边桩弯矩沿桩身呈先增大后减小的分布规律,其余桩体弯矩则均沿桩身呈逐渐增大的分布形式;桩顶与码头面板连接处因钢筋较先进入塑性状态而形成塑性铰,在工程设计中应予以重视.
In order to understand deeply the characteristics and failure mechanism of piles under the most unfavorable working conditions, considering the interaction between pile and soil, the elasto-plastic properties of foundation soil, the discontinuous contact characteristics of pile-soil interface and the non-linearity of pier structural materials, Element method to study the force and deformation characteristics and the distribution rules of plastic hinge under the most unfavorable conditions and provide some references for the construction design.The results show that the internal force distribution of the wharf structure is obviously adjusted to the sea side , Resulting in a larger pulling force on the pile foundations on the beached side, which is in an unfavorable working condition. The bending moment of the side piles at the side of the berthing pile first increases and then decreases along the pile body, while the bending moment of the other piles is all along the pile body The distribution form of increasing gradually; the top of the pile and the wharf panel connection due to the plastic into the plastic state than the first to form a plastic hinge, engineering design should be paid attention to.