| 摘要: |
| 现行规范中关于板桩码头的受力计算分析方法均有一定的局限性，且都不能模拟桩土之间的相互作用，为此，运用有限元软件Plaxis对板桩结构的受力特性进行非线性有限元分析，并与竖向弹性地基梁法的计算结果进行对比.结果表明：现行板桩规范中关于墙后主动土压力的假定与Plaxis计算结果不一致；土体硬化(HS)模型能更真实地反映土体的非线性特性；HS模型的土体参数中，内摩擦角最敏感，黏聚力和压缩模量次之，参数M最不敏感. |
| 关键词: Plaxis 土压力分布 土体硬化模型 敏感性分析 |
| DOI： |
| 分类号:TU432；U656.1+12 |
| 基金项目: |
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| Analysis of the sheet-pile wall based on Plaxis |
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TANG Zi-yang1, NIU Zhi-guo2, CHEN Chun-yan3
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1.CCCC FHDI Engineering Co.， Ltd.， Guangzhou;2.Nanjing Hydraulic Research Institute;3.Pearl River Hydrology and Water Resources Research Institute， Guangzhou
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| Abstract: |
| Traditional calculation methods specified in the current code for the sheet-pile wall are all limited and the interaction between soil and pile can not be taken into account， therefore non-linear FEM analysis for the interal force of the sheet-pile wall based on Plaxis software is carried out herein, of which results are compared with those of the traditional vertical beam on elastic foundation method. The research results show： (1)the assumption for the active earth pressure behind the sheet-pile wall in current Chinese Code differs from the results by Plaxis； (2)hardening soil constitutive model can represent the non-linear properties of soilmass well; (3)among all soilmass parameters for hardening soil model， the internal friction angle is the most sensitive， the cohesion force and modulus of compressibility less and parameter M is the least. |
| Key words: Plaxis distribution of earth pressure soilmass hardening model (HS model) sensitivity analysis |
