岩溶区桩基承载特性研究进展综述
DOI:
作者:
作者单位:

1.广东工业大学土木与交通工程学院;2.广州建筑股份有限公司;3.中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室

作者简介:

通讯作者:

中图分类号:

TU 4

基金项目:


Review of research progress on bearing characteristics and key disposal techniques of pile foundation in karst area
Author:
Affiliation:

1.School of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou;2.Guangzhou Construction Engineering Co,Ltd,Guangzhou;3.Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    在岩溶区进行桩基施工时,应尽可能的避开溶洞,但不可避开的情况也普遍存在,因此岩溶区桩基承载特性研究是桩基发展过程中必须要面对的问题。本文从理论研究、物理实验、数值模拟三个方面对岩溶区桩基承载特性研究现状进行了分析,得到如下结论:现有承载力计算公式存在影响因素考虑不全的情况,后续理论研究应考虑多因素协同影响下单桩极限承载力计算公式推导。物理模型试验的变量较为单一,试验过程中常常忽略水对桩基承载特性的影响,后续研究应当重点考虑地下水及多因素的协同作用。原位实验开展较少,检测获得数据准确性有待提高,后续应开展更多的原位实验、现场破坏实验以获得更全面的桩基承载特性实验数据。数值模拟研究中溶洞模型的建立大多采用长方体、正方体、椭球体、球体等标准尺寸,这与实际地层溶洞三维几何尺寸不符,真实的溶洞几何模型的建立是未来重点的发展方向。

    Abstract:

    In principle, karst caves should be avoided as far as possible during pile foundation construction in karst area, but sometimes it is unavoidable. Therefore, the research on the bearing characteristics of pile foundations in karst areas is a problem that must be faced in the development process of pile foundations. This article analyzes the current status of research on the bearing characteristics of pile foundations in karst areas from three aspects: theoretical research, physical experiments, and numerical simulation. The following conclusion is drawn: the existing bearing capacity calculation formulas have insufficient consideration of influencing factors, and subsequent theoretical research should consider the derivation of single pile ultimate bearing capacity calculation formulas under the synergistic influence of multiple factors. The variables in physical model tests are relatively single, and the influence of water on the bearing characteristics of pile foundations is often ignored during the testing process. Subsequent research should focus on the synergistic effect of groundwater and multiple factors. There are few in-situ experiments conducted, and the accuracy of the data obtained through detection needs to be improved. In the future, more in-situ experiments and on-site damage experiments should be carried out to obtain more comprehensive experimental data on the bearing characteristics of pile foundations. In the research related to numerical simulation, most of the cave models are built with standard size, which is inconsistent with the three-dimensional geometric size of the actual stratum cave. The establishment of a more realistic Geometric modeling of the cave is the key development direction in the future.

    参考文献
    相似文献
    引证文献
引用本文

刘宇鹏,侯振坤,肖尧,等. 岩溶区桩基承载特性研究进展综述[J]. 科学技术与工程, , ():

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2023-03-04
  • 最后修改日期:2023-10-23
  • 录用日期:2023-10-26
  • 在线发布日期:
  • 出版日期:
×
亟待确认版面费归属稿件,敬请作者关注