|本期目录/Table of Contents|

[1]龚成中,何春林,戴国亮.坝陵河大桥深嵌岩桩竖向承载力试验[J].建筑科学与工程学报,2011,28(04):43-47.
　GONG Cheng-zhong,HE Chun-lin,DAI Guo-liang.Experiment on Vertical Bearing Capacity of Deep Rock-socketed Pile for Baling River Bridge[J].Journal of Architecture and Civil Engineering,2011,28(04):43-47.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
28卷
期数:
2011年04期
页码:
43-47
栏目:
出版日期:
2011-12-20

文章信息/Info

Title:
Experiment on Vertical Bearing Capacity of Deep Rock-socketed Pile for Baling River Bridge
作者:
龚成中1,2,何春林2,戴国亮1
1. 东南大学 土木工程学院,江苏 南京 210096; 2. 淮阴工学院 建筑工程学院,江苏 淮安 223001
Author(s):
GONG Cheng-zhong1,2, HE Chun-lin2, DAI Guo-liang1
1. School of Civil Engineering, Southeast University, Nanjing 210096, Jiangsu, China; 2. School of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huai'an 223001, Jiangsu, China
关键词:
深嵌岩桩;  自平衡法;  桩侧摩阻力;  桩端阻力;  竖向承载力;  桩基
Keywords:
deep rock-socketed pile;  self-balanced method;  frictional resistance of pile side;  resistance of pile tip;  vertical bearing capacity;  piled foundation
分类号:
TU473.1
DOI:
-
文献标志码:
A
摘要:
以贵州坝陵河大桥2根深嵌岩桩基为研究对象,利用自平衡测试技术检测了桩基的竖向承载力,对测试结果进行了讨论; 分析了深嵌岩桩基的桩侧摩阻力、桩端阻力的发挥程度及其影响因素。研究结果表明:该地区大直径深嵌岩桩桩顶的荷载-位移曲线主要是以缓变型为主; 从桩侧岩层摩阻力来看,勘探报告所提供的岩层极限侧摩阻力数值偏小; 从桩侧摩阻力、桩端阻力分布来看,在软岩地区嵌岩深度大小对承载力影响较大,嵌岩比越大,则相应的承载力越大,变形越小。
Abstract:
Based on the piled foundation testing of 2 deep rock-socked piles from Baling River Bridge of Guizhou Province and self-balanced testing technique, the vertical bearing capacity of piled foundation was tested and the testing results were discussed. The exertion of frictional resistance of pile side and resistance of pile tip of piled foundation of deep rock-socked pile, and the influential factors of them were analyzed. The study results indicate that load-displacement curve of large diameter and deep rock-socketed pile in this area becomes slowly declining. From the view of frictional resistance of pile side of rock, the value of ultimate side resistance which is provided by exploration report is less than the true one; with the point distribution of frictional resistance of pile side and tip resistance, the size which pile has embedded in sock has greater impact on the bearing capacity in the soft rock area, the rock-socketed ratio is greater, the corresponding bearing capacity is greater, and the deformation is smaller.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2011-08-16
基金项目:“十一五”国家科技支撑计划项目(2008BAG07B01)
作者简介:龚成中(1970-),男,江苏淮安人,淮阴工学院副教授,东南大学工学博士研究生,E-mail:gcz2008@sina.com。
更新日期/Last Update: 2011-12-20