| 锚板在正常固结黏土中的承载力 |
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| 引用本文： | 于龙,刘君,孔宪京.锚板在正常固结黏土中的承载力[J].岩土力学,2007,28(7):1427-1434. |
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| 作者姓名： | 于龙 刘君 孔宪京 |
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| 作者单位： | 大连理工大学 海岸与近海工程国家重点实验室，大连 116024 |
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| 基金项目： | 国家自然科学基金;教育部留学回国人员科研启动基金 |
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| 摘 要： | 在岩土工程中，锚板通常被用来提供竖直或水平抗拔力，比如发射塔的基础、板桩墙结构和悬浮式海洋平台的基础。采用弹-塑性有限元方法对正常固结不排水黏土中的条形锚板进行数值分析，以图表形式给出了不同埋深率、不同上拔倾角、不同锚-土黏结形式下条形锚板的承载力系数和周围土体的流动机构，分析了土体自重对锚板承载力的影响，并给出了不同情况下锚板的极限承载力系数。采用基于重新划分网格并插值状态变量的大变形分析方法（RITSS），分析了正常固结黏土中锚板在连续拔出过程中的承载力变化以及土重对锚-土分离模式的影响。
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| 关 键 词： | 海洋工程 锚板 承载力 大变形 黏土 |
| 文章编号： | 1000-7598-（2007）07-1427-08 |
| 收稿时间： | 2005-07-23 |
| 修稿时间： | 2005-07-23 |
Stability of plate anchors in NC clay |
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| YU Long,LIU Jun,KONG Xian-jing.Stability of plate anchors in NC clay[J].Rock and Soil Mechanics,2007,28(7):1427-1434. |
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| Authors: | YU Long LIU Jun KONG Xian-jing |
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| Institution: | State Key Laboratory of Coastal & Offshore Engineering, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | Soil anchors are commonly used as foundation systems for structures requiring uplift or lateral resistances,such as transmission towers,sheet pile walls and foundations of floating offshore platforms.This paper applies displacement finite element analysis to estimate the ultimate pullout capacity of pre-embedded inclined strip anchors in normally consolidated(NC) clay.Results are presented in the familiar form of break-out factors,which are based on various soil strength profiles,anchor embedment ratios and pullout inclined angles.The influences of the soil self weight,soil strength gradient and anchor base type on the pullout capacity are discussed.The continuous pullout analysis,in which Remeshing and Interpolation Technique with Small Strain model(RITSS) is applied,shows that the ratio of the vertical stress to the soil shear strength plays an important role in the separation underneath the plate when vented base is assumed. |
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| Keywords: | offshore engineering plate anchors beating capacity large deformation clay |
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