钻孔灌注桩沉渣厚度检测技术发展和展望
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摘要
灌注桩施工过程中产生的桩底沉渣会降低桩侧摩阻力和桩底端阻力,是影响钻孔灌注桩桩基质量的重要因素之一,基于钻孔灌注桩沉渣问题对桩基承载力的危害性,对沉渣厚度精准检测属于灌注桩施工中的重要环节。按照不同施工工序总结了灌注桩浇筑前孔底沉渣检测技术和成桩后桩底沉渣检测技术,阐述各类沉渣检测技术的工作原理以及使用效果,分析并概括了不同沉渣检测技术的特点和适用性,对钻孔灌注桩沉渣检测技术的发展进行总结和展望。
The loose sediment at the bottom of bored piles will reduce the side friction and the resistance at the bottom of the pile. It is one of the important factors affecting the quality of the bored pile foundation. Due to the adverse effect of the bottom loose sediment to the bearing resistance of bored piles, the accurate measurement of the thickness of the bottom loose sediments is an important aspect in the bored pile construction. The soft sediment measurement methods before and after the concrete pouring for different construction procedures are summarized in this paper. The principles and results of these measurement methods are also introduced. Different methods for the specific construction methods are also recommended in this paper.
The loose sediment at the bottom of bored piles will reduce the side friction and the resistance at the bottom of the pile. It is one of the important factors affecting the quality of the bored pile foundation. Due to the adverse effect of the bottom loose sediment to the bearing resistance of bored piles, the accurate measurement of the thickness of the bottom loose sediments is an important aspect in the bored pile construction. The soft sediment measurement methods before and after the concrete pouring for different construction procedures are summarized in this paper. The principles and results of these measurement methods are also introduced. Different methods for the specific construction methods are also recommended in this paper.
引文
[1] 刘俊龙.桩底沉渣对超长大直径钻孔灌注桩承载力影响的试验研究[J].工程勘察,2000(3):8-11.
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[5] 黄建龙.钻孔桩孔底沉渣厚度测量工具和测量方法[P].汕头:CN101324416,2008-12-17.
[6] 修朝英.电解率桩孔沉渣测定方法及其装置[P].北京:中国建筑科学研究院地基基础研究所,CN1033415,1989-06-14.
[7] 杨春明,张德胜,邵建萍,等.超声波检测基桩孔沉渣厚度装置[P].廊坊:地质矿产部勘察技术研究所,CN2205538,1995-08-16.
[8] 范迪.沉渣厚度超声检测信号处理技术研究及应用[D].青岛:山东科技大学,2010.
[9] 谢和平,杨玉银,姜凌宇.“侧钻法”在水下深孔灌注桩桩底沉渣厚度检验中的应用[J].四川水力发电,2002(2):84-86+89.
[10] 王忠剑.低应变法及钻孔取芯法检测技术在桩基检测中的应用[J].科技经济导刊,2015(18):113+133.
[11] 戴洪军,郭纪中,韦华.砂土地层中沉渣对旋挖桩承载力的影响[J].岩土工程技术,2007(4):209-213.
[12] 王奎华,肖偲,吴君涛,等.饱和土中大直径缺陷桩振动特性研究[J].岩石力学与工程学报:1-9[2018-05-28]:2017.1587.
[13] 赵吉庆.考虑桩底沉渣的旋挖成孔灌注桩沉降特性研究及控制[D].重庆:重庆大学,2014.
[14] 赵海生.基桩浅部缺陷位置及程度的振动理论分析方法[J].土木工程学报,2005(6):83-88.
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[15] 韩玉春.桩基检测技术在高层建筑工程中的应用[D].杨凌:西北农林科技大学,2008.8.
[16] 李典庆,鄢丽丽.考虑桩底沉渣的灌注桩可靠度分析方法[J].岩土力学,2008(1):155-160.
[17] 王子娟,刘新荣,傅晏,等.两种岩石试件的“超声-回弹-密度”综合筛选法研究[J].岩石力学与工程学报,2018,37(S1):3575-3583.
[18] The effects of pile diameter and sleeve height on incremental filling ratio (IFR)[J].Japanese Geotechnical Society Special Publication,2015,1(6):17-22.
[19] Jia Xing Chen,Tong He Zhou.Application Research on Distributed Optical Fiber Monitoring Technology in Static Load Test of Large Diameter and Post-Grouting Filling Pile[J].Applied Mechanic and Materials,2014,3307(580):572-578.
[20] 李永辉,朱翔,周同和.桩端后注浆对大直径灌注桩影响的现场对比试验研究[J].岩土力学,2016,37(S2):388-396.
[21] 王忠福,刘汉东,贾金禄,等.大直径深长钻孔灌注桩竖向承载力特性试验研究[J].岩土力学,2012,33(9):2663-2670.
[22] 王云岗,章光,胡琦.钻孔灌注桩孔壁稳定性分析[J].岩石力学与工程学报,2011,30(S1):3281-3287.
[2] 王川婴,韩增强,王玉山.钻孔灌注桩沉渣厚度检测方法研究[J].岩土工程学报,2013,35(S2):1212-1215.
[3] 丁源萍.桩基工程手册[J].岩土力学,2008(8):2291
[4] 黄建龙.钻孔桩孔底沉渣厚度测量工具和测量方法[P].汕头:CN101324415,2008-12-17.
[5] 黄建龙.钻孔桩孔底沉渣厚度测量工具和测量方法[P].汕头:CN101324416,2008-12-17.
[6] 修朝英.电解率桩孔沉渣测定方法及其装置[P].北京:中国建筑科学研究院地基基础研究所,CN1033415,1989-06-14.
[7] 杨春明,张德胜,邵建萍,等.超声波检测基桩孔沉渣厚度装置[P].廊坊:地质矿产部勘察技术研究所,CN2205538,1995-08-16.
[8] 范迪.沉渣厚度超声检测信号处理技术研究及应用[D].青岛:山东科技大学,2010.
[9] 谢和平,杨玉银,姜凌宇.“侧钻法”在水下深孔灌注桩桩底沉渣厚度检验中的应用[J].四川水力发电,2002(2):84-86+89.
[10] 王忠剑.低应变法及钻孔取芯法检测技术在桩基检测中的应用[J].科技经济导刊,2015(18):113+133.
[11] 戴洪军,郭纪中,韦华.砂土地层中沉渣对旋挖桩承载力的影响[J].岩土工程技术,2007(4):209-213.
[12] 王奎华,肖偲,吴君涛,等.饱和土中大直径缺陷桩振动特性研究[J].岩石力学与工程学报:1-9[2018-05-28]:2017.1587.
[13] 赵吉庆.考虑桩底沉渣的旋挖成孔灌注桩沉降特性研究及控制[D].重庆:重庆大学,2014.
[14] 赵海生.基桩浅部缺陷位置及程度的振动理论分析方法[J].土木工程学报,2005(6):83-88.
[16] 刘冀.桩基检测技术的综合应用[D].长沙:中南大学,2011.
[15] 韩玉春.桩基检测技术在高层建筑工程中的应用[D].杨凌:西北农林科技大学,2008.8.
[16] 李典庆,鄢丽丽.考虑桩底沉渣的灌注桩可靠度分析方法[J].岩土力学,2008(1):155-160.
[17] 王子娟,刘新荣,傅晏,等.两种岩石试件的“超声-回弹-密度”综合筛选法研究[J].岩石力学与工程学报,2018,37(S1):3575-3583.
[18] The effects of pile diameter and sleeve height on incremental filling ratio (IFR)[J].Japanese Geotechnical Society Special Publication,2015,1(6):17-22.
[19] Jia Xing Chen,Tong He Zhou.Application Research on Distributed Optical Fiber Monitoring Technology in Static Load Test of Large Diameter and Post-Grouting Filling Pile[J].Applied Mechanic and Materials,2014,3307(580):572-578.
[20] 李永辉,朱翔,周同和.桩端后注浆对大直径灌注桩影响的现场对比试验研究[J].岩土力学,2016,37(S2):388-396.
[21] 王忠福,刘汉东,贾金禄,等.大直径深长钻孔灌注桩竖向承载力特性试验研究[J].岩土力学,2012,33(9):2663-2670.
[22] 王云岗,章光,胡琦.钻孔灌注桩孔壁稳定性分析[J].岩石力学与工程学报,2011,30(S1):3281-3287.