大型深水港接岸结构型式的有限元分析和比较研究  

FEM analysis and comparison on types of land-connecting structure for large-scale deep-water port

作　　者：杨云芳[1] 陈明关 陈学良 

机构地区：[1]浙江理工大学,浙江杭州310018 [2]中交第三航务工程勘察设计院,上海200032 [3]上海航道勘察设计研究院,上海200120

出　　处：《水运工程》2011年第1期203-208,共6页Port & Waterway Engineering

摘　　要：研究了大型深水港高桩码头多级围堤接岸结构新型式———堤下淤泥土较大范围换砂及清淤与多级围堤接岸,以及传统的淤泥土小范围换砂及砂桩处理与板桩挡土接岸型式。2种方案的弹塑性有限元计算表明,前者的沉降和水平位移均最小、单元应力水平低、施工期安全度高,方案优于后者。与传统的板桩接岸结构型式相比,多级围堤接岸型式具有结构简单、施工方便、边坡稳定性好等特点,但筑堤引起码头桩基的负摩擦力较高。A new type of land-connecting structure,i.e.multiple-stage embankment and sand replacement in the other area of the muddy soil below the embankment,is suggested for high-pile quay of large-scale deep-water port.By use of elastoplasticity finite element simulation for the new scheme and conventional sheet pile retaining wall indicate that the former is the best plan due to its smallest settlements,lateral displacements,low and even stress level of elements and high degree of safety in construction.Therefore,the land-connecting structure with multiple-stage embankment is characterized by simple structure,convenient construction,and good slope stability.But the negative friction forces acting on the piles of quay are rather large.

关 键 词：深水港 接岸结构 有限元 围堤 板桩 

分 类 号：U656.113[交通运输工程—港口、海岸及近海工程]