| 孙曦源,栾茂田,唐小微.饱和软黏土地基中单桶形基础水平承载特性有限元研究[J].,2010,(2):228-233 |
| 饱和软黏土地基中单桶形基础水平承载特性有限元研究 |
| Finite element study of horizontal bearing characteristics of single-bucket foundation on saturated soft clay ground |
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| DOI：10.7511/dllgxb201002014 |
| 中文关键词: 桶形基础 水平承载力 三维有限元 变动参数比较研究 |
| 英文关键词: bucket foundation horizontal bearing capacity three-dimensional finite element parametric comparative study |
| 基金项目:国家自然科学基金资助项目(50639010)；教育部高等学校博士学科点专项科研基金资助项目(20060141017). |
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| 中文摘要: |
| 桶形基础作为一种新型的浅海基础形式与传统基础形式相比具有诸多优越性，但是，其与地基土体之间复杂的相互作用使得此类结构的承载机理与破坏形式始终未有明确的界定．采用三维有限元方法对单桶形基础水平承载力进行了数值计算，并将计算结果与试验数据进行比较，验证了有限元方法的可靠性．进而，通过多组变动参数比较研究，探讨了饱和软黏土地基中单桶形基础水平承载力随着土体有效重度、土体变形模量、桶体长径比的增加而增大，随着荷载作用高度的增加而减小的特性，为工程实践提供了一定的参考意见． |
| 英文摘要: |
| Though bucket foundation used as a new type of foundation in shallow water can have significant advantages over conventional ones, the bearing mechanism and failure model are still unclear under horizontal loads, especially for the complicated interaction between the structure and the soil. So the horizontal bearing capacity of single-bucket foundation is calculated based on three-dimensional finite element method. Compared with the model test, the numerical simulation is reliable. Then, a series of parametric comparative studies are carried out and it is found that the horizontal bearing capacity of single-bucket foundation in saturated soft clay ground increases with the increasing of soil effective unit weight, soil deformation modulus and bucket slenderness ratio, but reduces with the increasing of loading height, from which some suggestions are given for engineering practice. |
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