| 余勇军，陈建峰，卞恒东，刘利琴，刘亚柳.系泊船连续撞击对高桩码头疲劳寿命的影响研究[J].海洋工程,2025,(3):143~152 |
| 系泊船连续撞击对高桩码头疲劳寿命的影响研究 |
| Study on influence of continuous mooring ship collision on the fatigue life of high-piled wharves |
| 投稿时间：2024-05-04 修订日期：2024-06-24 |
| DOI：10.16483/j.issn.1005-9865.2025.03.013 |
| 中文关键词: 高桩码头 船舶碰撞 动力响应 疲劳损伤 P-M准则 |
| 英文关键词:high-piled wharf ship collision dynamic response fatigue damage P-M criterion |
| 基金项目:国家自然科学基金资助项目（52371332） |
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| 中文摘要: |
| 港口风浪环境复杂，系泊船受到环境载荷作用可能对高桩码头产生连续撞击，对基桩造成严重的疲劳破坏。为了研究系泊船连续撞击对高桩码头疲劳寿命的影响，以天津某港口码头为例，挑选了3种典型吨位系泊船，基于浮体动力学理论建立了系泊船动力学方程，计算其在最大作业海况下的运动响应，并给出了系泊船与高桩码头发生碰撞的判定条件。基于有限元方法建立了高桩码头有限元模型，计算了不同碰撞速度下基桩的应力结果。考虑该港口各吨位船舶全年靠泊时间和各海况出现概率，采用线性疲劳累积损伤准则对基桩的疲劳损伤进行了预估。结果表明，在最大作业海况下13和28万吨级船舶撞击会使码头基桩产生疲劳损伤，而8万吨级船舶几乎不会使基桩产生疲劳损伤。随着船舶吨位增加，临界碰撞速度减小，各靠船墩受到的应力幅值也随之减小。系泊船的连续撞击会较大程度地降低码头疲劳寿命，在码头设计中应关注码头基桩受到系泊船连续碰撞的疲劳损伤问题。 |
| 英文摘要: |
| The port environment, characterized by complex wind and wave conditions, subjects mooring ships to environmental loads that may lead to continuous collisions with high-piled wharves, causing significant fatigue damage to the foundation piles. To investigate the effect of continuous mooring ship collisions on the fatigue life of high-piled wharves, a case study was conducted using a wharf at a port in Tianjin. Three typical tonnages mooring ship were selected, and a dynamic equation for the mooring ship was established based on floating body dynamics theory. The motion response of the ship was calculated under the maximum operational sea conditions, and criteria for mooring ship-wharf collisions were provided. A finite element model of the high-piled wharf was developed to compute the stress results in the foundation piles under different collision velocities. Considering the annual mooring times and the probability of various sea conditions for ships of different tonnages at the port, a linear fatigue damage accumulation criterion was used to estimate the fatigue damage of the foundation piles. The results show that collisions with 130 000-ton and 280 000-ton ships would cause fatigue damage to the foundation piles under maximum operational sea conditions, while an 80 000-ton ship would cause negligible fatigue damage. As the ship tonnage increases, the critical collision velocity decreases, and the stress amplitude experienced by each mooring pile also decreases. Continuous collisions by mooring ships significantly reduce the fatigue life of the wharf, highlighting the need to address fatigue damage from such continuous collisions in the design of foundation piles for wharves. |
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