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VM荷载下双层饱和黏土地基承载特性数值分析 被引量：1

NUMERICAL ANALYSIS FOR BEARING CAPACITY BEHAVIOR OF FOOTINGS ON UNDRAINED TWO-LAYERED SATURATED CLAY UNDER VM LOADING
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摘要 复合加载下地基的承载特性是港口、海洋工程基础设计的关键问题。近来,极限荷载包络图取代了经典的承载力计算方法,用于评价复合加载下地基的组合极限承载力。以大型通用有限元软件ABAQUS为计算工具,对VM荷载作用下层状饱和黏土地基上基底完全粘结的条形基础承载力进行系统的变参数计算,研究地基土层强度特性、荷载组合等因素对地基承载力及破坏模式的影响规律,得出VM荷载作用下极限荷载的包络图,为港口、海洋工程基础设计提供参考。 The bearing capacity behavior of foundations under combined loading is one of the key issues in design of offshore structures. Recently, limit load envelope diagram is used to replace traditional calculations of limit bearing capacity to evaluate the combined limit bearing capacity＇ of foundations. In this paper, FEM parameter study of bearing capacity of foundations under VM loading is performed using software ABAQUS. And the foundations are simplified as footings on the surface of undrained two-layered saturated clay with unlimited tension between footing and subsoil. The effects of soil strength profile and combined loading on the subsoil capacity and failure mode are investigated. A limit load diagram under VM load is also presented and can be used to develop and improve the design of offshore foundations.
作者 詹云刚 栾茂田 袁凡凡
机构地区 江苏科技大学船舶与海洋工程学院 大连理工大学土木水利学院岩土工程研究所 大连理工大学海岸及近海工程国家重点实验室 中国科学院武汉岩土力学研究所
出处 《工业建筑》 CSCD 北大核心 2009年第1期71-75,70,共6页 Industrial Construction
基金 国家自然科学基金重点基金资助项目(50639010) 国家自然科学基金资助项目(50509023)
关键词 有限元分析 地基 极限承载力 极限荷载包络图 finite element analysis foundation ultimate bearing capacity limit load envelope
分类号 TU442 [建筑科学—岩土工程]
  • 相关文献

参考文献11

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二级参考文献32

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共引文献30

同被引文献13

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工业建筑
2009年 第1期

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