波浪荷载下格栅加固海滨缓坡防护效果研究  

Study on the protective effect of beach gentle slopesreinforced by geogrid under wave loads

作　　者：王丽艳[1] 戈鑫 林启航 李广祥 尹崇山 李明 WANG Liyan;GE Xin;LIN Qihang;LI Guangxiang;YIN Chongshan;LI Ming(School of Civil Engineering and Architecture,Jiangsu University of Science and Technology,Zhenjiang 212100,China;Jiangsu Jianyuan Construction Co.Ltd.,Suzhou 215000,China;Lianyungang Water Resources Planning and Design Institute Co.Ltd.,Lianyungang 222006,China)

机构地区：[1]江苏科技大学土木工程与建筑学院,镇江212100 [2]江苏建院营造股份有限公司,苏州215000 [3]连云港市水利规划设计有限公司,连云港222006

出　　处：《江苏科技大学学报(自然科学版)》2025年第2期16-26,共11页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金面上项目(52278355);江苏省自然科学基金面上项目(BK20201454);江苏省研究生科研与实践创新计划项目(KYCX23_3892)。

摘　　要：在“海洋强国”建设和“双碳”战略目标下,绿色环保低碳的土工格栅可用于保护海洋土地资源,从而提出易于施工的格栅片式插入和笼式嵌入两种加固方式.首先,通过ABAQUS软件建立海床模型,以二阶Stokes波理论为基础,研究波浪作用下缓坡海床的动力响应和海床失稳后的破坏区域,与解析解对比,验证了数值模型的可靠性;其次,考虑格栅顺坡平铺、片式插入与笼式嵌入3种铺设方式,缓坡倾角、海床土的渗透性与强度等因素,建立嵌入格栅后的海床模型,研究嵌入格栅后的海床动力响应特征.最后,建立砂质缓坡海床的物理模型冲刷试验,分析海床在格栅不同方式加固后的泥沙流失和海床截面的变化,揭示格栅不同铺设方式对海床的加固机理.Under the“Ocean power”construction and the“Double carbon”strategic goals,the green environmental protection low carbon geogrid can be used to protect the marine land resources,therefore,two reinforcement methods,geogrid insert and cage insert,which are easy to be constructed,are proposed.Firstly,the seabed model is established by Abaqus software,and based on the second-order Stokes wave theory,the dynamic response of the gently sloped seabed under wave action and the failure region of the seabed after destabilization are studied and compared with the analytical solution,the reliability of the numerical model is verified,and then,three laying methods,i.e.the geogrid laying along the slope,the sheet insertion and the cage insertion,are considered,the dynamic response characteristics of the seabed with the geogrid embedded in the seabed were studied by establishing the seabed model with the geogrid embedded in the seabed.Finally,the physical model erosion test of sandy gentle slope seabed is established to analyze the sediment loss and the change of seabed cross section after different grille reinforcement and to reveal the mechanism of different grille reinforcement.

关 键 词：缓坡海床 土工格栅 波浪荷载 数值模拟 冲刷试验 

分 类 号：TV139.2[水利工程—水力学及河流动力学]