大面积非均质填海地基加固方案设计

Design of Reinforcement Scheme for Large Area and Heterogeneous Land Reclamation

拟加固地基土为海相沉积淤泥质软土与人工填筑土混杂填筑,场地有多种不同荷载、不同沉降要求的区域。地基加固措施借鉴港口建设经验,采取了以强夯为主,碎石桩、碎石桩+强夯等复合地基加固方案。借助有限元数字模拟分析确定地基加固的强度及深度,通过强夯振动试验,确保施工期既有建筑物的安全。

The foundation soil to be reinforced is a hybrid of marine sedimentary silt soft soil and artificial filling soil,the site has a variety of different loads and settlement requirements. The foundation reinforcement measures are used by referring to the experience of port construction,and the reinforcement schemes such as dynamic compaction,gravel pile,crushed stone column and dynamic compaction are adopted. With the aid of the finite element numerical simulation analysis,the strength and depth of the foundation reinforcement are determined,and the safety of the existing buildings can be ensured by the dynamic compaction vibration test.