防波堤滑移运动解析解及其应用研究  

Analytical solution of breakwater sliding and its application

作　　者：蒋学炼[1,2] 李珊珊[1] 李炎保[3] 

机构地区：[1]天津城市建设学院天津市软土特性与工程环境重点实验室,天津300384 [2]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 [3]天津大学建筑工程学院,天津300072

出　　处：《海洋通报》2012年第4期441-448,459,共9页Marine Science Bulletin

基　　金：天津市自然科学基金(10JCYBJC03700);天津市高等学校科技发展基金(20080906);大连理工大学海岸和近海工程国家重点实验室开放基金(LP1104)

摘　　要：基于波浪力时程曲线分解,推导出非破碎波和破碎波作用下防波堤滑移运动方程的解析解,可为类似问题提供参考。通过与以往实验结果对比验证了解析解的有效性,并将其应用于防波堤设计实例中,计算了不同设计波浪重现期条件下的期望滑移距离和期望失效概率,表明我国规范中设计波浪重现期标准的合理性。从计算结果分析,考虑到分项系数对于荷载效应的放大作用,遵从规范设计出来的防波堤尺寸明显偏于安全,若采用允许一定变形的设计理念,则可在不影响结构可靠性的基础上极大节约材料用量。Based on the subdivision of the time history models of wave force, the analytical solution of breakwater sliding motion under non-breaking and breaking waves was deduced, which provided a helpful reference for similar problems. The analytical formulas of sliding distance were validated with a previous small scale model test. And then, they were applied into a breakwater case in order to estimate the expected sliding distance and the expected failure probability for different return periods of design wave. The results verified the rationality of the return period standard of design wave and simultaneously indicated the circumspection of our national norm with consideration of the amplified load effect by partial factors. In addition, the results also implied that the performance-based design conception could greatly cut down the consumption of building materials in engineering while the reliability of structure was not impacted.

关 键 词：防波堤 波浪 滑移 解析解 

分 类 号：U656.2[交通运输工程—港口、海岸及近海工程]