循环荷载下饱和粉土中伞式吸力锚水平承载性能研究  

Research on horizontal bearing capacity of umbrella suction anchor in saturated silt under cyclic load

作　　者：盛腾飞 刘红军 刘灿[3] SHENG Tengfei;LIU Hongjun;LIU Can(Shandong Key Laboratory of Marine Environmental Geology Engineering,Qingdao 266100;Key Laboratory of Marine Environment and Ecology,Ministry of Education,Qingdao 266100;College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100)

机构地区：[1]山东省海洋环境地质工程重点实验室,山东青岛266100 [2]海洋环境与生态教育部重点实验室,山东青岛266100 [3]中国海洋大学环境科学与工程学院,山东青岛266100

出　　处：《海洋湖沼通报》2023年第1期10-17,共8页Transactions of Oceanology and Limnology

基　　金：国家自然科学基金资助项目(41572247);山东省科技攻关资助项目(2014GGX104007)。

摘　　要：利用ABAQUS有限元软件构建模型,对伞式吸力锚施加水平循环荷载,研究伞式吸力锚的承载性能。在固定荷载大小的情况下,研究锚体位移以及不同位置土体的应力应变。分析可得,在水平循环荷载的作用下,土体的最大塑性应变出现在筒裙位置,筒裙和锚支的结合发挥了主要的承载作用。改变荷载工况,研究不同荷载大小对伞式吸力锚的影响。研究发现,随着循环波浪荷载作用强度的增大,筒裙的稳定作用愈加明显,且这种作用在循环波浪荷载的后期阶段相对更加突出。The bearing performance of the umbrella suction anchor was studied using the ABAQUS finite element software to construct model.The horizontal cyclic load was applied to the umbrella suction anchor.Under the condition of fixed load size,the displacement of the anchor and the stress and strain of the soil at different positions are investigated.According to the analysis,under the action of horizontal cyclic load,the maximum plastic strain of the soil appears at the position of the tube skirt.The combination of the tube skirt and the anchor support played a major role in the bearing performance.The load conditions were changed to study the effect of different load sizes on the umbrella suction anchor.The research found that with the increase of the intensity of the cyclic wave load,the stability effect of skirt was more obvious,and this effect was more prominent in the later stage of cyclic wave load.

关 键 词：伞式吸力锚 循环荷载 承载特性 数值分析 

分 类 号：TU470[建筑科学—结构工程]