预置管法静力触探检测水泥搅拌桩损伤控制方法研究

李国维; 王苏云; 吴建涛; 郑亚坤; Felix Omoro; 侯宇宙

doi:10.11779/CJGE201912006

预置管法静力触探检测水泥搅拌桩损伤控制方法研究 English Version

李国维^1,2,
王苏云^1,2,
吴建涛^1,2, ,,
郑亚坤^1,3,
Felix Omoro^1,2,
侯宇宙^1,3

1. 河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京 210024;
2. 河海大学道路与铁道工程研究所,江苏南京 210024;
3. 河海大学岩土工程科学研究所,江苏南京210024

基金项目: 国家自然科学基金项目（41472240）; 中央高校业务费专项项目（2015B25514）; 广东省交通运输厅科技项目（201102017）

详细信息

作者简介:
李国维(1964— ),男,博士,研究员,主要从事软基路堤变形和高边坡稳定性等方面的教学与科研工作。E-mail: lgwnj@163.com。

通讯作者:
吴建涛，E-mail：jiantao.wu@hhu.edu.cn

中图分类号: TU472
计量
- 文章访问数: 257
- HTML全文浏览量: 6
- PDF下载量: 121
出版历程
- 收稿日期: 2019-01-08
- 发布日期: 2019-12-24

Damage control methods for detecting cement mixing piles by static cone penetration tests in reserved tubes

1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210024, China;
2. Highway and Railway Research Institute, Hohai University, Nanjing 210024, China;
3. Geotechnical Research Institute, Hohai University, Nanjing 210024, China

摘要

摘要: 预置管法静力触探实施水泥搅拌桩完整检测时存在桩体损伤问题。基于模型桩实验和数值模拟方法研究预置管法静力触探检测水泥搅拌桩损伤控制方法。模型桩实验表明,插管直径影响探头的贯入轨迹,插管强度影响检测结果的灵敏度;数值模拟显示,静力触探贯入插管损伤桩体的程度与插管直径、管壁厚度、桩体强度有关,与贯入深度、插管强度无关;静力触探贯入引起的桩体等效塑性应变与插管的直径大小、管壁厚度负相关;引起的损伤区范围与桩体龄期和插管直径负相关,最大半径随插管直径增大近似为双曲线趋势衰减。现场检测时,在试桩阶段依据数值模拟预先确定插管尺寸的有效范围,由现场试验选择确定工程检测用插管的尺寸,达到控制检测损伤桩体完整性的目标。
- 预置插管 /
- 静力触探 /
- 水泥搅拌桩 /
- 有限单元法 /
- 等效塑性应变
Abstract: The problem of pile damage encountered when using cone penetration test (CPT) in a reserved tube for quality detection testing is addressed. Based on the experimental and numerical models, the damage control methods for CPT in reserved tubes are studied. The results of CPT show that the penetrating path of probe and the sensitivity of detection are influenced by the diameter and strength of the tube. The numerical results show that the damage degree of the pile depends on the diameter and thickness of the tube and strength of the pile, as opposed to the depth of cone penetration and strength of the tube. The equivalent plastic strain of the pile is negatively correlated to the diameter and thickness of the tube. The area of damaged zone is negatively correlated to the age of mixing pile and diameter of the tube. The maximum radius of the damaged area decreases with the increase of the tube diameter. In the field tests, the effective range of the sizes of tubes is determined in advance according to the numerical simulation, and the size of the tubes used in engineering tests are determined by the field tests, so as to achieve the goal of controlling the integrity of the damaged piles.
- reserved tube /
- CPT /
- cement mixing pile /
- finite element method /
- equivalent plastic strain

HTML全文

参考文献(22)

[1]	李国维, 姜微, 吴玉财, 等. 预置管法静力触探检测水泥搅拌桩现场试验[J]. 岩土工程学报, 2013, 35(7): 1289-1296. (LI Guo-wei, JIANG Wei, WU Yu-cai, et al.Field tests on detecting cement mixing piles by static cone penetration tests in reserved hole[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(7): 1289-1296. (in Chinese))
[2]	KERISEL J.Foundations profondes[J]. Ann ITBTP, 1962, 179(3): 32-43.
[3]	MO P Q, MARSHALL A M, YU H S.Centrifuge modelling of cone penetration tests in layered soils[J]. Géotechnique, 2015, 65(6): 468-481.
[4]	郑亚坤, 李国维, 贺冠军. 内置插管静力触探检测水泥搅拌桩试验研究[J]. 河南科学, 2015, 33(4): 592-596. (ZHENG Ya-kun, LI Guo-wei, HE Guan-jun.Experimental research on detecting cement mixed piles with built-in pipe by static cone penetration tests[J]. Henan Science, 2015, 33(4): 592-596. (in Chinese))
[5]	VESIC A S.Expansion of cavities in infinite soil mass[J]. J Soil Mech Found Div, ASCE, 1972, 98: 265-290.
[6]	BUTTERFIELD R, BANERJEE P K.The effects of pore water pressures on the ultimate bearing capacity of driven piles[C]// Proceedings of 2nd South East Asian Regional Soil Mechanics and Foundation Engineering. Tokyo, 1970: 385-394.
[7]	LADANYI B, JOHNSTON G H.Behavior of circular footings and plate anchors embedded in permafrost[J]. Canadian Geotechnical Journal, 1974, 11(4): 531-553.
[8]	CHEN J W, JUANG C H.Determination of drained friction angle of sands from CPT[J]. Journal of Geotechnical Engineering, 1996, 122(5): 374-381.
[9]	DURGUNOGLU H T, MITCHELL J K.Static penetration resistance of soils. I-II[C]// Proceedings of the ASCE Spec Conference on In Situ Measurement of Soil Properties. New York, 1975: 51-89.
[10]	HOULSBY G T, WROTH C P.Determination of undrained strengths by cone penetration tests[C]// Proceedings of the 2nd European Symposium on Penetration Testing. 1982: 585-90.
[11]	SOKOLOVSKII V V.Statics of granular media[M]. New York: Pergamon Press, 1965.
[12]	BALIGH M M.Strain path method[J]. J Soil Mech Found Div, ASCE, 1985, 111(9): 1108-1136.
[13]	DE Borst R, VERMEER P A.Possibilities and limitations of finite elements for limit analysis[J]. Géotechnique, 1984, 34(2): 199-210.
[14]	WALKER J, YU H S.Adaptive finite element analysis of cone penetration in clay[J]. Acta Geotech, 2004, 1: 43-57.
[15]	周健, 崔积弘, 贾敏才, 等. 静力触探试验的离散元数值模拟研究[J]. 岩土工程学报, 2007, 29(11): 1604-1610. (ZHOU Jian, CUI Ji-hong, JIA Min-cai, et al.Numerical simulation of cone penetration test by discrete element method[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(11): 1604-1610. (in Chinese))
[16]	耿功巧, 蔡国军, 段伟宏, 等. 基于大变形有限元的CPTU尺寸效应与贯入速率研究[J]. 岩土工程学报, 2015, 37(增刊1): 89-93. (GENG Gong-qiao, CAI Guo-jun, DUAN Wei-hong, et al.Size effect and penetration rate of CPTU based on ABAQUS[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(S1): 89-93. (in Chinese))
[17]	JGJ 79—2012 建筑地基处理技术规范[S]GJ 79—2012 建筑地基处理技术规范[S]. 北京: 中国建筑工业出版社, 2013. (JGJ 79—2012 Technical code for ground treatment of buildings[S]GJ 79—2012 Technical code for ground treatment of buildings[S]. Beijing: China Architecture & Building Press, 2013. (in Chinese))
[18]	金伟, 刘山生. PVC-U型材弹性模量测试偏差分析[J]. 中国塑料, 2006, 20(7): 81-85. (JIN Wei, LIU Shan-sheng.Testing deviation analysis of flexile modulus of PVC-U profiles[J]. China Plastics, 2006, 20(7): 81-85. (in Chinese))
[19]	费康, 张建伟. ABAQUS在岩土工程中的应用[M]. 北京:中国水利水电出版社, 2010. (FEI Kang, ZHANG Jian-wei.Application of ABAQUS in geotechnical engineering[M]. Beijing: China Water & Power Press, 2010. (in Chinese))
[20]	费康, 彭劼. ABAQUS岩土工程实例讲解[M]. 北京: 人民邮电出版社, 2017. (FEI Kang, PENG Jie.Explanation of examples of geotechnical engineering using ABAQUS[M]. Beijing: Posts and Telecom Press, 2017. (in Chinese))
[21]	ENDRA S.Finite element simulation of the cone penetration test in uniform and stratified sand[D]. Ann Arbor: University of Michigan, 2005.
[22]	顾嘉丰, 任青文. 水工混凝土弥散型裂缝数值模型中开裂判据的研究[J]. 工程力学, 2015, 32(6): 84-91. (GU Jia-feng, REN Qing-wen.Study on hydraulic concrete cracking criterion in smeared crack numerical model[J]. Engineering Mechanics, 2015, 32(6): 84-91. (in Chinese))

施引文献(7)

期刊类型引用(6)

1.	刘耀徽，恩和得力海，黄亚平，张耘获，杨坪. 时移跨孔地震全波形反演方法在水泥搅拌桩检测中的应用研究. 地球物理学进展. 2024(05): 2078-2089 . 百度学术
2.	张丁宁. 上海滨海平原区土的热物理指标与静力触探Ps值的关系研究. 城市道桥与防洪. 2022(07): 197-199+25 . 百度学术
3.	贾剑青，赵阳阳，贾超，辛成平，张帮鑫. 湿陷性黄土地基水泥土搅拌桩加固效果研究. 铁道工程学报. 2022(07): 18-24 . 百度学术
4.	何杨闽. 物联网全过程管控水泥搅拌桩关键技术研究. 珠江水运. 2021(11): 36-38 . 百度学术
5.	王建梅. 高铁软弱斜坡段路基处理技术研究. 施工技术. 2020(07): 49-53 . 百度学术
6.	赵洋洋，杨昌民. 基于RBF神经网络对基桩完整性的预测. 施工技术. 2020(S1): 69-72 . 百度学术