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| 倾斜荷载作用下高桩的非线性数值分析 | |
| 引用本文： | 易教珠,姚文娟,吴怀睿,程泽坤.倾斜荷载作用下高桩的非线性数值分析[J].水运工程,2011(7):61-65. |
| 作者姓名： | 易教珠 姚文娟 吴怀睿 程泽坤 |
| 作者单位： | 1. 江西省交通设计院,江西南昌,330002 2. 上海大学,土木工程系,上海,200072 3. 中交第三航务工程勘察设计院有限公司,上海,200032 |
| 摘 要： | 现有的桩基设计计算较少考虑倾斜荷载耦合作用的影响,因而不能精确反映高桩桩身实际的工作情况。从Newmark弹簧支座的概念出发,结合p-y曲线法,提出了适用于有限杆单元法的非线性弹簧系数矩阵求解方法,并在此基础上考虑P-Δ效应,编制了相应的有限元程序。通过对工程实例的计算和比较,对模型的正确性和可行性进行了验证。同时,利用该方法计算分析了桩顶转角和P-Δ效应的影响程度。 |
| 关 键 词： | 倾斜荷载 p-y曲线 有限杆单元法 水平非线性弹簧系数矩阵 P-Δ效应 |
Nonlinear numerical analysis of high pile under inclined loads |
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| YI Jiao-zhu,YAO Wen-juan,WU Huai-rui,CHENG Ze-kun.Nonlinear numerical analysis of high pile under inclined loads[J].Port & Waterway Engineering,2011(7):61-65. | |
| Authors: | YI Jiao-zhu YAO Wen-juan WU Huai-rui CHENG Ze-kun |
| Institution: | Yi Jiao-zhu1,YAO Wen-juan2,WU Huai-rui2,CHENG Ze-kun3(1.Communications Design Institute of Jiangxi pro.,Nanchang 330002,China,2.Department of Civil Engineering,Shanghai University,Shanghai 200072,3.CCCC Third Harbor Consultants Co.,Ltd.,Shanghai 200032,China) |
| Abstract: | Current pile design methods lack special treatment on the coupling of inclined loads,so the actual conditions of high-piles can’t be reflected accurately.A method for calculating the coefficient matrix of lateral nonlinear springs,which is very applicable in finite pole element analysis,is proposed based on the concept of Newmark spring and the p-y curves formula.Then,The finite element program,which considers the P-Δ effect,is compiled on the basis of the analysis model,and applied to analyze real projects.The correctness and feasibility of the presented model is confirmed by comparing the results of this study with testing piles.Moreover,the influence degree of the rotation on the pile top and P-Δ effect is analyzed. |
| Keywords: | inclined load p -y curve finite pole element coefficient matrix of lateral nonlinear spring P-effect |
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