港口航道与近海工程2024，Vol.61Issue(4)：53-58,6.DOI:10.16403/j.cnki.ggjs20240410
粉细砂地层斜坡式防波堤地震响应数值分析研究
Numerical Analysis of Seismic Response of Sloping Breakwater Structure in Silty and Fine Sand Base
于洋 1孙治林 1刘良志 2陈少青 3程林3
作者信息
- 1. 国能黄骅港务有限责任公司,河北沧州 061113
- 2. 天津市北洋水运水利勘察设计研究院有限公司,天津 300452||天津大学建筑工程学院,天津 300350
- 3. 天津市北洋水运水利勘察设计研究院有限公司,天津 300452
- 折叠
摘要
Abstract
In response to the structural deformation and safety evaluation of sloping breakwater under earthquake action.Based on the generalized elastic-plastic constitutive model,finite element method is used to analyze the dynamic response of breakwater structures in fine sand under OSE and SSE conditions.The main conclusions obtained from the study are as follows:the amplification factor of the ground peak acceleration in the soft soil foundation compared to the PGA reaches 1.4,which is in line with the classification of site types in the specifications;Under the OSE condition,the liquefaction probability of the fine sand layer is less than 0.3,which is distributed on the surface outside the breakwater.The minimum overall anti-skid safety factor of the breakwater during earthquake is 1.25,which meets the requirements of the code for structural safety;Under SSE condition,the liquefaction probability of the fine sand layer reaches 0.75,and the liquefaction area mainly occurs at the foot of the embankment on the inner side of the bay,the corresponding maximum horizontal displacement on the inner side of the bay reaches 0.9 m,on the sea side reaches 0.25 m,and the vertical displacement reaches 0.85 m.The deformation of the breakwater does not affect the functional performance of the structure and can meet the deformation limit requirements.关键词
斜坡式防波堤/有限元模型/粉细砂液化/变形计算Key words
Sloping Breakwater/Finite Element Model/Liquefaction of Fine Sand/Deformation Calculation分类
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于洋,孙治林,刘良志,陈少青,程林..粉细砂地层斜坡式防波堤地震响应数值分析研究[J].港口航道与近海工程,2024,61(4):53-58,6.
