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| 水平受荷壁板桩群桩的变分法分析 | |
| 引用本文： | 雷国辉,詹金林,洪鑫,施建勇.水平受荷壁板桩群桩的变分法分析[J].岩土力学,2008,29(2):303-309. |
| 作者姓名： | 雷国辉 詹金林 洪鑫 施建勇 |
| 作者单位： | 1. 河海大学,岩土力学与堤坝教育部重点实验室,岩土工程科学研究所,南京,210098 2. 现代建筑设计集团申元岩土工程有限公司,上海,200011 3. 昆山市建设工程质量检测中心,江苏,昆山,215337 |
| 基金项目： | 教育部留学回国人员科研启动基金 |
| 摘 要： | 将壁板桩桩身水平位移用有限级数函数表示，地基土体的荷载位移关系用Mindlin点对点的位移解表示，同时考虑桩前水平土阻抗力和桩侧水平摩阻力沿桩周分布的不均匀性，采用双重高斯数值积分法将基于变分原理建立的壁板桩群桩体系的总势能展开为简单的矩阵形式方程，并根据最小势能原理得到水平受荷壁板桩群桩荷载位移关系的显式解答。与三维有限元方法计算结果的对比验证了所提出解答的合理性。 |
| 关 键 词： | 水平受荷壁板桩 变分法 群桩 荷载位移关系 |
| 文章编号： | 1000-7598-（2008）02-303-07 |
| 收稿时间： | 2006-04-19 |
| 修稿时间： | 2006年4月19日 |
Variational analysis of laterally loaded barrette groups |
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| LEI Guo-hui,ZHAN Jin-lin,HONG Xin,SHI Jian-yong.Variational analysis of laterally loaded barrette groups[J].Rock and Soil Mechanics,2008,29(2):303-309. | |
| Authors: | LEI Guo-hui ZHAN Jin-lin HONG Xin SHI Jian-yong |
| Institution: | 1. Key Laboratory of ministry of Eduction for Geomechanics and Embankment Engineering, Geotechnical Research Intitute, Hohai University Nanjing 210098, China; 2. Xiandai Architectural Design Group, Shenyuan Geotechnical Co., Ltd, Shanghai 200011, China; 3. Kunshan Construction Engineering Quality Testing Center, Kunshan 215337, China |
| Abstract: | Based on the variational principle, the total potential energy of a general group of laterally loaded barrettes is established. By using the Gauss double numerical integration method, it is expanded to a simple equation of matrix form, in which a finite series is used to denote the lateral displacement of barrette shaft, Mindlin’s point-to-point displacement solution is applied to describe the force-displacement relationship of ground soils; and allowance is made for the nonuniform distributions, of both the lateral soil resistance at the front of and the lateral shaft resistance on the sides of the barrette shaft, along the perimeter of the barrette. In light of the principle of minimum potential energy, an explicit solution is obtained for the load-displacement relationship of laterally loaded barrette groups. The proposed solution is verified from the comparisons of the calculated results made with the three-dimensional finite element method. |
| Keywords: | laterally loaded barrette variational method pile group load-displacement relationship |
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