波浪力对高桩码头结构作用的有限元分析

高桩码头的桩基和面板等上部结构在波浪力作用下会造成局部破坏或整体结构失稳。以工程实例为研究对象,依据实际结构尺寸建立高桩码头有限元模型,以模态分析为基础,探讨波浪力对高桩码头结构的影响。分析结果表明,高桩码头桩在波浪力作用下明显有失稳迹象。对增加桩壁厚和增大管径两种解决桩失稳方案进行了静力分析,增加管的外径虽然会增大面板的应力,但可以有效的控制桩的失稳。

Finite Element Analysis of the Impact of Wave Forces on High-pile Wharf Structures

The upper structures,such as the pile foundation and panels,of high-pile wharves can be locally damaged or made wholly instable by wave forces.With practical projects as examples,and the models for finite element analyses established according to their actual sizes,the impact of wave forces on the structures of high-pile wharves is studied upon the basis of the modal analyses.The results of the analyses prove that PHC piles tend to show obvious signs of instability under the wave force.And two solutions to the instability,namely,increasing the thickness of the pile wall or increasing the pipe diameter,are analyzed statically,which shows that although increasing the pipe diameter could increase the stress of the panels,it could also control the instability of the piles effectively.