| 摘要: |
| 为研究深水软弱土层条件下防波堤的稳定性，本研究基于深水防波堤工程，通过物理模型试验，利用沉降装置来模拟不同阶段下的沉降工况，并进行不规则波作用下的防波堤稳定性研究，重点检验护面块体的稳定性以及堤身整体断面的形态变化。试验结果表明，竣工阶段，防波堤在三种不同水位和两个波浪重现期作用下，护面块体稳定性情况良好，失稳率低，断面整体结构变化不大。在不同程度的沉降影响下，块体位移、间隙变化以及失稳率均在可控范围内；防波堤的高程随着地基沉降而产生较大变化，块体衔接处和堤底部位受沉降和波浪影响较大，肩台以下部分坡度有所减缓，但防波堤断面整体仍保持了连续性和稳定性。研究结果表明了该深水防波堤方案的可行性，为类似海洋环境下的防波堤设计提供了重要的科学依据。 |
| 关键词: 深水斜坡式防波堤 软弱土层 地基沉降 稳定性 物理模型试验 |
| DOI： |
| 分类号:U 656.2 ??????? |
| 基金项目:国家重点研发计划项目（2023YFC3106502） |
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| Research on the stability model test of a deep-water mound breakwater on soft soil foundations |
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chenenliang1, wangjianping2, gulinlin1, wangzhen1, zhangxiaohan1, yangxiaoning1, fangbin2
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1.Nanjing University of Science and Technology;2.Academy of Navy Research, PLA
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| Abstract: |
| To investigate the stability of a breakwater constructed on deep soft soil, a physical model test was conducted based on an actual deep-water breakwater project. A settlement device was employed to simulate settlement conditions at various stages, and the stability of the breakwater under irregular wave action was examined. The primary focus was on verifying the stability of the armour blocks and the overall cross-sectional deformation of the breakwater. The test results indicated that during the completion stage, the breakwater exhibited excellent stability of the armour blocks under three different water levels and two wave return periods, with a low failure probability and minimal changes in the overall cross-sectional configuration. Under various settlement conditions, the displacement, gap variations, and failure probability of the armour blocks were all within acceptable limits. The elevation of the breakwater experienced significant changes due to foundation settlement, and the armour blocks at the joints and the bottom of the breakwater were more susceptible to the combined effects of settlement and wave action. The slope below the shoulder experienced a slight reduction, but the overall cross-sectional profile of the breakwater remained continuous and stable. These findings demonstrate the feasibility of the proposed deep-water breakwater scheme and provide valuable scientific evidence for the design of breakwaters in similar marine environments. |
| Key words: deep-water breakwaters soft soil foundation settlement stability physical model test |
