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基于沉降控制的竖向下压循环荷载作用下的桩基设计方法

陈仁朋, 任宇, 陈云敏

陈仁朋, 任宇, 陈云敏. 基于沉降控制的竖向下压循环荷载作用下的桩基设计方法[J]. 岩土工程学报, 2015, 37(4): 622-628. DOI: 10.11779/CJGE201504007
引用本文: 陈仁朋, 任宇, 陈云敏. 基于沉降控制的竖向下压循环荷载作用下的桩基设计方法[J]. 岩土工程学报, 2015, 37(4): 622-628. DOI: 10.11779/CJGE201504007
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CHEN Ren-peng, REN Yu, CHEN Yun-min. Design method for piles subjected to cyclic axial loading for control of permanent accumulated settlement[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(4): 622-628. DOI: 10.11779/CJGE201504007
Citation: CHEN Ren-peng, REN Yu, CHEN Yun-min. Design method for piles subjected to cyclic axial loading for control of permanent accumulated settlement[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(4): 622-628. DOI: 10.11779/CJGE201504007
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基于沉降控制的竖向下压循环荷载作用下的桩基设计方法  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 310058; 2. 浙江大学建筑工程学院 浙江 杭州 310058; 3. 中国电力工程顾问集团华东电力设计院,上海 200063

基金项目: 国家杰出青年科学基金项目（51225804）; 国家自然科学基; 金高铁联合基金重点项目（U1234204）; 中国铁路总公司重大科技项; 目（2014G09）; 浙江省交通厅科研计划项目（2014H07）
详细信息
    作者简介:

    陈仁朋（1972- ）,男,博士,教授,主要从事土与结构相互作用及交通岩土工程的教学科研工作。E-mail: chenrp@zju.edu.cn。

Design method for piles subjected to cyclic axial loading for control of permanent accumulated settlement

  • 1. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China; 2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China; 3. East China Electric Power Design Institute of China Power Engineering Consulting Group, Shanghai 200063, China

摘要

    摘要
  • 摘要: 低幅值、大周次竖向循环荷载作用下桩基发生累积沉降及承载力弱化,影响到风机塔架、高速铁路路基等沉降敏感结构物的服役性能。首先总结了竖向循环荷载作用下桩基设计要求及若干设计关键问题。基于模型试验结果,分析了竖向循环荷载作用下的桩基承载力和累积沉降演化规律;定义了3种桩顶累积沉降发展模式及对应的循环荷载比和静荷载比组合,建立了桩基循环累积沉降分析图,提出了组合循环荷载作用下的桩基循环加载性状简化判定公式。提出了针对竖向循环荷载作用下桩基的设计方法及设计流程,并给出了设计实例。
    Abstract: The pile capacity degrades and the permanent settlement of pile accumulates when the pile is subjected to low-amplitude and long-term axial cyclic loading. The degradation of the pile capacity and the permanent accumulated settlement of the pile will greatly influence the service ability of settlement-sensitive superstructures, such as high-speed railway tracks, wind turbines and so on. The general design requirements of piles under cyclic axial loading and the key issues that are of great interest to the designers are introduced. The behaviors of piles under axial cyclic loading are presented and the main factors influencing them are discussed. The definitions of load ratios are given. The criteria for assessing pile response based on the limit cyclic loading ratio are proposed. The idea of a cyclic interaction diagram is developed. The design method and procedure for piles under cyclic axial loading are proposed. Finally, a case is given to verify the proposed design approach.
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    • 参考文献(17)
  • [1] 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))
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    [16] FD003—2007 风力发电机组塔架地基基础设计技术规定[S]. 2007. (FD003—2007 Design regulations on subgrade and foundation for WTGS of wind power station[S]. 2007. (in Chinese))
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出版历程
  • 收稿日期:  2014-08-03
  • 发布日期:  2015-05-05

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