| 直接积分法在防波堤可靠性分析中应用 |
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| 引用本文： | 张磊,董胜,张向东.直接积分法在防波堤可靠性分析中应用[J].海洋工程,2011,29(4):103-107. |
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| 作者姓名： | 张磊 董胜 张向东 |
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| 作者单位： | 中国海洋大学工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(50879085); “新世纪优秀人才资助计划”资助项目(NCET-07-0778) |
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| 摘 要： | 防波堤是港口工程的重要组成部分,在港口工程总投资中占有较大的比重。准确地计算防波堤的可靠性具有重大的理论和经济意义。随着数理统计理论的快速发展,直接积分法在结构可靠性计算中的应用逐渐得到重视。应用直接积分法计算直立式防波堤的可靠性,概率意义明确,计算精度高。以秦皇岛典型直立堤为算例,采用直接积分法对直立式防波堤进行可靠性分析时,将无限积分区域转换成有限积分区域,分析选择了波浪力和浮托力的联合密度函数,采用数值积分的办法计算失效概率,并将计算结果与独立变量JC法和相关变量JC法的计算结果进行了对比。结果表明:直接积分法和相关变量JC法计算结果相近,而比独立变量JC法计算结果偏低。
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| 关 键 词： | 直接积分法 直立式防波堤 可靠度 波浪力 浮托力 |
Application of direct integration method in breakwater reliability analysis |
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| ZHANG Lei,DONG Shen and ZHANG Xiang-dong.Application of direct integration method in breakwater reliability analysis[J].Ocean Engineering,2011,29(4):103-107. |
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| Authors: | ZHANG Lei DONG Shen and ZHANG Xiang-dong |
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| Institution: | ZHANG Lei,DONG Sheng,ZHANG Xiang-dong(Ocean University of China,Qingdao 266100,China) |
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| Abstract: | As the important components of port projects,breakwaters take large proportions in total investments.How to correctly determine breakwater reliability is of both academic and economic significance.With the development of statistical theory,direct iotegration method is gradually drawing more and more attention.The probabilistic meaning of the direct integration method is definite to calculate the failure probability of the vertical breakwaters.The calculation precision is higher because of a full considerati... |
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| Keywords: | direct integration method vertical breakwaters reliability wave force uplifting pressure |
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