人工鱼礁最大静摩擦系数影响因素的试验研究
S953.1; 人工鱼礁与海底间的最大静摩擦系数是人工鱼礁安全校核所需的重要参数,对其影响因素的分析可作为人工鱼礁设计优化的科学依据.该研究共设计了6种底面开口比不同的人工鱼礁模型,对5种载荷和5种底质粒径条件下礁体模型的最大静摩擦系数进行了150组平面拉动试验,分析了最大静摩擦系数随底质泥沙粒径、底质含水率、加载质量、礁体底面开口比及开口位置的变化规律.研究结果表明:1)含水率为饱和条件下,底质为砾石和砂质时最大静摩擦系数随底质粒径的减小而增大,底质为粉砂黏土时最大静摩擦系数则明显变小;2)底质为粉砂黏土时最大静摩擦系数随含水率的增加先增大后减小,含水率为35%时最大静摩擦系数达到最大值;3...
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| Published in | 南方水产科学 Vol. 14; no. 1; pp. 77 - 84 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
大连海洋大学海洋科技与环境学院,辽宁 大连 116032
2018
中国水产科学研究院南海水产研究所,中国水产科学研究院海洋牧场技术重点实验室,广东 广州 510300%中国水产科学研究院南海水产研究所,中国水产科学研究院海洋牧场技术重点实验室,广东 广州 510300%大连海洋大学海洋科技与环境学院,辽宁 大连,116032 |
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| Abstract | S953.1; 人工鱼礁与海底间的最大静摩擦系数是人工鱼礁安全校核所需的重要参数,对其影响因素的分析可作为人工鱼礁设计优化的科学依据.该研究共设计了6种底面开口比不同的人工鱼礁模型,对5种载荷和5种底质粒径条件下礁体模型的最大静摩擦系数进行了150组平面拉动试验,分析了最大静摩擦系数随底质泥沙粒径、底质含水率、加载质量、礁体底面开口比及开口位置的变化规律.研究结果表明:1)含水率为饱和条件下,底质为砾石和砂质时最大静摩擦系数随底质粒径的减小而增大,底质为粉砂黏土时最大静摩擦系数则明显变小;2)底质为粉砂黏土时最大静摩擦系数随含水率的增加先增大后减小,含水率为35%时最大静摩擦系数达到最大值;3)各底质条件下最大静摩擦系数均随加载质量的增加而减小,随礁体底面开口比的增大而增大,且与底面开口位置无关. |
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| AbstractList | S953.1; 人工鱼礁与海底间的最大静摩擦系数是人工鱼礁安全校核所需的重要参数,对其影响因素的分析可作为人工鱼礁设计优化的科学依据.该研究共设计了6种底面开口比不同的人工鱼礁模型,对5种载荷和5种底质粒径条件下礁体模型的最大静摩擦系数进行了150组平面拉动试验,分析了最大静摩擦系数随底质泥沙粒径、底质含水率、加载质量、礁体底面开口比及开口位置的变化规律.研究结果表明:1)含水率为饱和条件下,底质为砾石和砂质时最大静摩擦系数随底质粒径的减小而增大,底质为粉砂黏土时最大静摩擦系数则明显变小;2)底质为粉砂黏土时最大静摩擦系数随含水率的增加先增大后减小,含水率为35%时最大静摩擦系数达到最大值;3)各底质条件下最大静摩擦系数均随加载质量的增加而减小,随礁体底面开口比的增大而增大,且与底面开口位置无关. |
| Abstract_FL | Maximum static friction coefficient between artificial reef and seabed is an important parameter for safety check of artifi-cial reefs. The analysis of the influencing factors can be used as the scientific basis for optimization of artificial reef design. In this study, we designed six kinds of artificial reef models, and measured the maximum static friction coefficient of the reef models with five kinds of additional loading quality and sediment size by 150 groups of experiments, so as to analyze the changes of maximum static friction coefficient caused by given sediment particle size, sediment moisture content, loading quality, reef bottom opening ra-tio and opening position. The results show that: 1) At water saturation, the maximum static friction coefficient increased with de-creasing sediment size except when the sediment was silt. The friction force on silt was smaller obviously due to soft flowing charac-teristic of ground; 2) When the sediment was silt, the maximum static friction coefficient increased obviously with increasing water content first, but decreased afterwards. When the water content was 35%, the maximum static friction coefficient reached the maxim-um value; 3) The maximum static friction coefficient in all the sediments declined with increasing loading quality. The ratio of bot-tom opening was positively correlated with static friction force, while the position of bottom opening did not affect the maximum static friction coefficient. |
| Author | 张钟哲 唐振朝 丁玲 |
| AuthorAffiliation | 大连海洋大学海洋科技与环境学院,辽宁 大连 116032;中国水产科学研究院南海水产研究所,中国水产科学研究院海洋牧场技术重点实验室,广东 广州 510300%中国水产科学研究院南海水产研究所,中国水产科学研究院海洋牧场技术重点实验室,广东 广州 510300%大连海洋大学海洋科技与环境学院,辽宁 大连,116032 |
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| Author_FL | DING Ling ZHANG Zhongzhe TANG Zhenzhao |
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| Author_xml | – sequence: 1 fullname: 丁玲 – sequence: 2 fullname: 唐振朝 – sequence: 3 fullname: 张钟哲 |
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| DocumentTitle_FL | Study on factors affecting maximum static friction coefficient of artificial reefs |
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| Keywords | 最大静摩擦系数 泥沙粒径 maximum static friction coefficient sediment particle size 含水率 physical model experiment water content 物理模型试验 artificial reef 人工鱼礁 |
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| Title | 人工鱼礁最大静摩擦系数影响因素的试验研究 |
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