| 摘要: |
| 基于竖向弹性地基梁计算模型，提出了板桩结构计算的拟简支梁法．通过在板桩拉杆锚碇点与板桩底端设置计算模型的人工支座，即将板桩的计算模型简化为简支梁，建立板桩与土的变形协调方程，再根据板桩的边界条件，建立静力平衡方程，求解得板桩的内力及拉杆拉力．应用拟简支梁法对我国板桩码头进行结构计算的结果，与通用有限元计算软件ANSYS的计算结果十分接近. |
| 关键词: 拟简支梁法 竖向弹性地基梁 变形协调方程 静力平衡方程 板桩 港口工程 |
| DOI： |
| 分类号:TV314 |
| 基金项目:教育部创新团队发展基金 |
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| Virtual simply-supported beam method for design of sheet pile walls |
|
LI Rong-qing,GONG Jin-xin
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State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
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| Abstract: |
| Based on the calculation model of vertical elastic grade beam, a method called virtual simply-supported beam method for design of sheet pile walls is introduced. In the virtual simply-supported beam method, artificial supports are set at the action spot of tie rods and the free end of the sheet pile separately. The sheet pile is assumed as a simply-supported beam on elastic foundation, and then the deformation compatibility equation between soil and sheet pile is established. Finally, the static equilibrium equation is obtained according to the actual boundary conditions of the sheet pile, and the inner force of the sheet pile and tensile force of the tie rods are calculated. Sixteen sheet pile docks in China are analyzed by using the virtual simply-supported beam method. The results are almost equal to those obtained using the software ANSYS. |
| Key words: virtual simply-supported beam method equation static equilibrium equation sheet pile harbor vertical elastic grade beam deformation compatibility engineering |
