一种低桩宽承台卸荷板式海堤在限制环境下的应用

海滨城市建设海堤经常受相邻桥隧的影响,建设条件受到各种限制,传统的大型土石方海堤已无法满足要求。因此,提出一种低桩宽承台卸荷板式海堤,该结构能适应打桩设备小、施工作业面狭窄、地质条件差且不能换填、地面荷载大及防腐要求高等不利条件。采用MIDAS/GTS NX软件对结构进行三维数值模拟计算,并现场监测收集变形数据,结果表明,该结构具有桩基弯矩小、水平位移小、整体稳定性好等优点。

Application of low-pile wide-platform unloading-board seadike in a restricted environment

Construction of sea dikes in coastal cities is often affected by adjacent bridges and tunnels,construction conditions are subject to various constraints.Therefore,this paper presents a low-pile wide-platform unloading-board seadike which is suitable for the disadvantageous conditions,such as small-size pile driving equipment,limited operation and construction area,bad geological conditions,no replacement of filler,heavy load to ground,high requirements of anticorrosion,etc.Three dimensional numerical simulation is carried out through MIDAS/GTS NX software,and deformation data are collected by field monitoring.The results show that the proposed structure plan has the advantages of small bending moment of pile foundation,small horizontal shift,good whole stability,etc.