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摘要：
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高桩码头-岸坡体系的相互作用机理一直是困扰工程界的难题。基于某突堤的现场勘察资料和土体参数,建立了高桩码头与岸坡相互作用的二维平面应变问题和三维空间问题的弹塑性有限元模型,采用与M ohr-Co lum n准则匹配的D rucker-P rager准则作为土的屈服准则,分析了桩基-岸坡体系的变形机理,同时,针对二维和三维情况各种工况组合进行了对比分析,并结合土体参数和现场测斜资料,分析了高桩码头-岸坡体系的变形规律,并指出了影响桩、梁和岸坡体系变形的主要因素,并建议了合理的治理方案。
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The interaction mechanism of the piled wharf and slope system is a big problem to the engineers.A numerical elastoplastic finite element model including 2D plain strain problem and 3D space problem is developed based on the reconnaissance data and the parameters of soil.Drucker-Prager criterion matching with Mohr-Column criterion is used as the yielding criterion of soil.Based on the model,the deformation mechanism of the pile-slope system is analyzed.Simultaneously,the conclusions of the 2D and 3D calculations under the different working conditions are compared and analyzed.Based on the survey data of the parameters and deformation of the soil,the deformation of the piled wharf and slope system is analyzed and the main influence factors to the displacement and deformation of the piles,beams and slope system are indicated.Some reasonable methods are finally proposed to deal with such problems.
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基金项目：
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国家自然科学基金资助项目(50579046)
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作者简介：
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参考文献：
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[1]魏汝龙,王年香,杨守华.高桩码头与岸坡变形的相互关系[J].岩土工程学报,1992,14(6):38-49.
[2]廖雄华,张克绪.天津港高桩码头桩基-岸坡土体相互作用的数值分析[J].水利学报,2002(3):81-87.
[3]张鲁渝,刘东升,时卫民.扩展广义D rucker-P rager屈服准则在边坡稳定分析中的应用[J].岩土工程学报,2003,25(3):216-219.
[4]张鲁渝.有限元强度折减法计算土坡稳定安全系数的精度研究[J].水利学报,2003(1):21-27.
[5]天津港码头稳定性评估研究报告[R].天津:交通部天津水运工程科学研究所,2005.
[6]G riffiths D V,L ane P A.S lope stab ility ana lysis by fin ite el-em en ts[J].G eotechn ique,1999,49(3):387-403.
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