负摩阻力作用下锥形异型桩承载力研究

代先尧; 王亮清; 李长冬; 王凯; 张永权

doi:10.3969/j.issn.1001-1986.2015.03.015

负摩阻力作用下锥形异型桩承载力研究

中国地质大学(武汉)工程学院, 湖北武汉 430074

基金项目:

41372310)

国家自然科学基金项目(41202198

中国地质大学(武汉)2013年自主创新资助计划项目(1310491A06)

中央高校基本科研业务费专项资金"摇篮计划"(CUG130409)

详细信息

作者简介:
代先尧(1990-),男,湖北仙桃人,硕士研究生,从事岩土体稳定性评价.E-mail:hubeidxy@139.com

通讯作者:
李长冬(1981-),男,博士,副教授,从事岩土体稳定性评价与地质灾害防治方法研究与教学工作.E-mail:lichangdong@cug.edu.cn

中图分类号: TU473
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出版历程
- 收稿日期: 2013-10-28
- 网络出版日期: 2021-10-21

Bearing capacity of cone pile under action of negative friction resistance

Faculty of Engineering, China University of Geosciences, Wuhan 430074, China

摘要

摘要: 研制异型桩是降低负摩阻力的重要措施之一,对目前能降低负摩阻力的异型桩的种类和特征进行了系统分析与总结,并介绍了作者已授权的一项国家发明专利——一种端部螺纹X形变截面预制管桩及其施工方法。通过FLAC^3D软件分别模拟了圆形等截面桩和锥形异型桩在相同地面堆载的情况下桩身轴力的分布情况,结果表明锥形纵截面的设置可以有效降低负摩阻力的影响。阐述了端部螺纹X形变截面预制管桩能更显著降低负摩阻力的机制,研究成果可为端部螺纹X形变截面预制管桩的设计和推广应用提供一定的理论基础。
- 锥形异型桩 /
- 负摩阻力 /
- 变截面 /
- 数值模拟
Abstract: Development of special-shaped pile is one of the important measures to reduce the negative friction, the types and characteristics of the current special-shaped pile reducing the negative friction were analyzed and summarized, and the authors introduced a state authorized invention patent——The thread at the end of the X shaped precast pipe pile and its construction method. Distribution of circular section pile and tapered special-shaped pile on the same surface load under the condition of axial force of pile were simulated respectively by FLAC^3D software. Results show that the effect of longitudinal section of tapered settings can effectively reduce the negative friction. The mechanism of the thread at the end of the X shaped precast pipe pile which can significantly reduce the negative friction was elaborated. The theoretical foundation for design and application of research results for the thread at the end of the X shaped precast pipe piles was provided.
- tapered special-shaped pile /
- negative friction /
- variable cross-section /
- numerical simulation