| 格型钢板桩结构有限元数值分析 |
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| 引用本文： | 王元战,焉振,王禹迟.格型钢板桩结构有限元数值分析[J].岩土力学,2013,34(4):1163-1170. |
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| 作者姓名： | 王元战 焉振 王禹迟 |
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| 作者单位： | 天津大学 天津市港口与海岸工程重点实验室，天津 300072 |
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| 基金项目： | 国家自然科学基金资助（No. 51279128）；天津市科技支撑计划重点项目资助（No. 10JCYBJC03400）；天津市自然科学基金资助 （No. 10SYSYJC27300）。 |
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| 摘 要： | 以有限元软件ABAQUS作为分析平台，建立波浪荷载作用下格型钢板桩结构稳定性及应力分析的三维弹塑性有限元分析模型。格型钢板桩采用壳体单元模拟，在相邻板桩之间设置铰接连接器模拟板桩之间的相对转动；土体采用Mohr-Coulomb本构模型模拟，在格型钢板桩与其内、外土体之间设置接触面单元模拟它们之间的滑移、张裂和闭合。结合某实际工程，研究结构的破坏模式、失稳特性和应力分布特性，分析参数变化对结构稳定性和环向拉力的影响，并对格内土体的剪切变形进行分析，建议格型钢板桩锁口拉力的验算断面。结果表明，铰接连接器的设置对于结构稳定性影响不大，但对环向拉力有一定影响；格内土体的剪切变形主要发生在格体中轴处，符合太沙基法结论。
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| 关 键 词： | 格型钢板桩结构 有限元模型 壳体单元 铰接连接器 稳定性 环向拉力 |
| 收稿时间： | 2012-02-08 |
Finite element numerical analysis of cellular steel sheet pile structure |
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| WANG Yuan-zhan,YAN Zhen,WANG Yu-chi.Finite element numerical analysis of cellular steel sheet pile structure[J].Rock and Soil Mechanics,2013,34(4):1163-1170. |
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| Authors: | WANG Yuan-zhan YAN Zhen WANG Yu-chi |
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| Institution: | Tianjin Key Laboratory of Harbor & Ocean Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | A 3D elastoplastic finite element model is established for stability and stress analysis of the cellular steel sheet pile structure under wave load by employing ABAQUS finite element software. Shell element is used to simulate steel sheet piles and connector of hinge is set to imitate the influence of relative rotation of steel sheet piles next to each other; Mohr-Coulomb constitutive model is adopted for soil; and contact elements are set to simulate sliding, splitting and closing between sheet pile and soil outside and inside cellular. Based on a case engineering, mode of failure, stability failure property and stress distribution are studied, considering the influence of parameters variation on stability and hoop stress analysis of the structure; and anylisis of shear deformation in the sheet pile walls is carried out; suggestion is made for sheet pile interlock tension in some surface sections for examination. Results show that connector of hinge has little influence on stability but has a certain influence on hoop stress. Shear deformation surface mainly occurs in the medial axis of the cellular cell, which is consistent with the conclusion of Terzaghi. |
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| Keywords: | cellular sheet pile structure finite element model shell element connector of hinge stability hoop stress |
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