高级搜索
  • 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引（EI）收录期刊
  • Scopus数据库收录期刊

刚性单桩竖向循环加载模型试验研究

陈仁朋, 任 宇, 陈云敏

陈仁朋, 任 宇, 陈云敏. 刚性单桩竖向循环加载模型试验研究[J]. 岩土工程学报, 2011, 33(12): 1926-1933.
引用本文: 陈仁朋, 任 宇, 陈云敏. 刚性单桩竖向循环加载模型试验研究[J]. 岩土工程学报, 2011, 33(12): 1926-1933.
shu
CHEN Ren-peng, REN Yu, CHEN Yun-min. Experimental investigation on a single stiff pile subjected to long-term axial cyclic loading[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(12): 1926-1933.
Citation: CHEN Ren-peng, REN Yu, CHEN Yun-min. Experimental investigation on a single stiff pile subjected to long-term axial cyclic loading[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(12): 1926-1933.
shu

刚性单桩竖向循环加载模型试验研究  English Version

  • (1. 浙江大学软弱土与环境土工教育部重点实验室，浙江 杭州 310027 ； 2. 浙江大学建筑工程学院，浙江 杭州 310027)

基金项目: 国家自然科学基金项目（ 50878193 ）；新世纪优秀人才支持计划项目（ NCET-08-0491 ）；浙江省重点创新团队支持计划（ 2009R50050 ）
详细信息
    作者简介:

    陈仁朋 (1972 – ) ，男，浙江衢州人，博士，教授，主要从事地基处理及基础工程等方面教学及科研工作。

  • 中图分类号: TU473

Experimental investigation on a single stiff pile subjected to long-term axial cyclic loading

  • (1. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310027, China; 2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China)

摘要

    摘要
  • 摘要: 刚性桩在高铁低矮路堤加固中广泛应用。利用浙江大学大型地基与边坡工程模型试验系统，开展了饱和粉土地基中刚性单桩动力加载大比例模型试验，对不同静偏荷载及循环荷载组合作用下的桩基性状进行了研究。通过模型桩身安装的各类传感器，对桩顶累积沉降、桩身轴力、桩–土界面孔压及正应力变化进行了监测。试验发现，循环剪切会引起桩–土界面土颗粒重排，导致桩–土界面孔压及有效应力状态发生改变。循环荷载比 CLR 对桩基累积沉降、桩侧应力状态发展影响显著。根据试验结果，对累积沉降发展规律进行了归纳，分析并讨论了桩侧应力状态变化机理。
    Abstract: Stiff pile-supported low embankments have been widely adopted in high-speed railway lines in China. Large-scale model tests are carried out to investigate the response of a single stiff pile subjected to axial dynamic loading in silts. Tests are conducted by means of the large foundation and slope engineering simulation system in Zhejiang University. Various combinations of static and cyclic loadings are applied in tests. The pile used in the tests are instrumented with load cells, pore pressure probes and pressure cells. The accumulated settlement, axial force, pore pressure and radial total stress along the pile are monitored. The test results indicate that the cyclic loading causes soil particle rearrangement, which leads to a change in stress state at soil-pile interface. The accumulated settlement and stresses acting on pile shaft are greatly influenced by the cyclic loading ratio (CLR). The development of the accumulated settlement with different CLRs is summarized and presented. The possible mechanisms responsible for stress changes at soil-pile interface are discussed.
    • HTML全文
    • 参考文献(17)
  • [1] 薛照钧 . 铁路客运专线软弱地基低矮路堤采用无梁板桩柱结构技术研究 [J]. 铁道工程学报 , 2007, 24 (5): 12 – 15. (XUE Zhao-jun. Research on the technology of flat-slab beamless pile structure for low embankment of soft weak subgrade of passenger dedicated railway line[J]. Journal of Railway Engineering Society, 2007, 24 (5): 12 – 15. (in Chinese))
    [2] 蒋关鲁 , 吴丽君 , 等 . 桩网结构加固京沪高速铁路饱和松软土地基的研究 [C]// 中国土木工程学会第十届土力学及岩土工程学术会议论文集 , 2007, 中册 : 274 – 277. ( JIANG Guan-lu , WU Li-jun, et al. Rechearch of saturated soft ground improved by pile on Jing-Hu high speed railway line[C]// Proceedings of 10th Chinese Conference on Soil Mechanics and Geotechnical Engineering, 2007, Vol 2: 274 – 277. (in Chinese))
    [3] 魏永幸 , 蒋关鲁 . 无碴轨道路基关键技术探讨——以遂渝线无碴轨道综合试验段为例 [J]. 铁道工程学报 , 2006(5): 39 – 44. (WEI Yong-xin, JIANG Guan-lu. Exploration on key technology of ballastless track subgrade-A case study of comprehensive experimental section of ballastless track on Suining-Chongqing line[J]. Journal of Railway Engineering Society, 2006(5): 39 – 44. (in Chinese) )
    [4] TATSUOKA F, ISHIHARA K. Drained deformation of sand under cyclic stresses reversing direction[J]. Soils and Foundations, 1974, 14 (3): 51 – 65.
    [5] YASUHARA K, YAMANOUCHI T, HIRAO K. Cyclic strength and deformation of normally consolidated clay [J]. Soils and Foundations, 1982, 22 (3): 77 – 91.
    [6] MORTARA G , MANGIOLA A , GHIONNA V N. Cyclic shear stress degradation and post-cyclic behaviour from sand-steel interface direct shear tests[J]. Canadian Geotechnical Journal, 2007, 44 (7) : 739 – 752.
    [7] 新建时速 300 ～ 350 公里客运专线铁路设计暂行规定 [S]. 2007. ( Design code for newly constructed passenger dedicated railway line with speed 300-350km/h[S]. 2007. (in Chinese))
    [8] 蒋关鲁 , 詹永祥 , 魏永幸 . 遂渝线土质路基无碴轨道桩 - 板结构设计及试验研究 [C]// 中国土木工程学会第十届土力学及岩土工程学术会议论文集 , 2007, 中册 : 316 – 324. ( JIANG Guan-lu , ZHAN Yong-xiang, WEI Yong-xing. design and experimental exploration of ballastless track with pile-plate structure on Suining-Chongqing line[C] // Proceedings of 10th Chinese Conference on Soil Mechanics and Geotechnical Engineering, 2007, Vol 2: 274 – 277. (in Chinese))
    [9] 杨龙才 , 郭庆海 , 周顺华 , 等 . 高速铁路桥桩在轴向循环荷载长期作用下的承载和变形特性试验研究 [J]. 岩石力学与工程学报 , 2005, 24 (13): 2362 – 2368. (YANG Long-cai, GUO Qing-hai, ZHOU Shun-hua, et al. Dynamic behaviors of pile foundation of high-speed railway bridge under long-term cyclic loading in soft soil[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24 (13): 2362 – 2368. (in Chinese))
    [10] 彭雄志 , 赵善锐 , 罗书学 , 等 . 高速铁路桥梁基础单桩动力模型试验研究 [J]. 岩土工程学报 , 2002, 24 (2): 218 – 221. (PENG Xiong-zhi, ZHAO Shan-rui, LUO Shu-xue, et al. Dynamic model tests on pile foundation of high-speed railway bridge[J]. Chinese Journal of Geotechnical Engineering, 2002, 24 (2): 218 – 221. (in Chinese))
    [11] 黄 雨 , 柏 炯 , 周国鸣 , 等 . 单向循环荷载作用下饱和砂土中单桩沉降模型试验研究 [J]. 岩土工程学报 , 2009, 31 (9): 1440 – 1444. (HUANG Yu, BAI Jiong, ZHOU Guo-ming, et al. Model tests on settlement of a single pile in saturated sand under unilateral cyclic loading[J]. Chinese Journal of Geotechnical Engineering, 2009, 31 (9): 1440 – 1444. (in Chinese))
    [12] O'RIORDAN N, ALLWRIGHT R, ROSS A, et al. Long term settlement of piles under repetitive loading from trains[C]// Symposium on Structures for High-speed Railway Transportation, 2003, IABSE, Antwerp: 67-74.
    [13] BOND A J, JARDINE R J, DALTON J C P. Design and performance of the imperial college instrumented pile[J]. Geotechnical Testing Journal, 1991, 14 (4): 413 – 422.
    [14] 胡一峰 . 高速铁路路基长期动力稳定性分析的理论和实践 [R]. OPB, 2008. (HU Yi-feng. Theory and practise on the analysis of long-term stability of high speed railway embankment[R]. OPB, 2008. (in Chinese))
    [15] ASTM D1143-81 Standard test method for piles under static axial compressive load[S]. ASTM, 1994.
    [16] 朱 斌 , 任 宇 , 陈仁朋 , 等 . 竖向下压循环荷载作用下单桩承载力及累积沉降特性模型试验研究 [J]. 岩土工程学报 , 2009, 31 (2): 186 – 193. (ZHU Bin, REN Yu, CHEN Ren-peng, et al. Model test on bearing capacity and accumulated settlement of single pile subjected to axial cyclic loading[J]. Chinese Journal of Geotechnical Engineering, 2009, 31 (2): 186 – 193. ( in Chinese ))
    [17] LEHANE B M, JARDINE R J, BOND A J, et al. Mechanisms of shaft friction in sand from instrumented pile tests[J]. Journal of Geotechnical Engineering, 1993, 119 (1): 19 – 35.
    • 相关文章
    • 施引文献
    • 资源附件(0)
计量
  • 文章访问数:  1413
  • HTML全文浏览量:  3
  • PDF下载量:  713
  • 被引次数: 0
出版历程
  • 发布日期:  2011-12-14

目录

摘要
HTML全文
    参考文献(17)
    相关文章
    施引文献
    资源附件(0)

    /

    返回文章
    返回
    版权所有 © 2010水利部交通部国家能源局南京水利科学研究院 苏ICP备05007122号-11公安联网备案号：32010602011255
    编辑部地址：南京市虎踞关34号《岩土工程学报》编辑部邮编：210024电话：025-85829534，85829556E-mail: ge@nhri.cn