南京大学学报(自然科学版) ›› 2018, Vol. 54 ›› Issue (6): 1057–1063.doi: 10.13232/j.cnki.jnju.2018.06.001

• 环境工程地质学专栏 •    下一篇

海上超长PHC管桩BOFDA内力测试

缪长健,施斌?,郑兴,王湛2,魏广庆3   

  1. 1.南京大学地球科学与工程学院,南京,210023;2.中交四航工程研究院有限公司,广州,510230; 3.苏州南智传感科技有限公司,苏州,215123
  • 接受日期:2018-05-07 出版日期:2018-12-01 发布日期:2018-12-01
  • 通讯作者: 施斌,E-mail:shibin@nju.edu.cn E-mail:shibin@nju.edu.cn
  • 基金资助:
    国家重大科研仪器研制项目(41427801)

The inner force test of super-long PHC pile at sea based on BOFDA

Miao Changjian1,Shi Bin1*,Zheng Xing1,Wang Zhan2,Wei Guangqing3   

  1. 1.School of Earth Sciences and Engineering,Nanjing University,Nanjing,210023,China; 2.CCCC Forth Harbor Engineering Institute Co,Ltd,Guangzhou,510230,China; 3.Suzhou NanZee Sensing Technology Ltd,Suzhou,215123,China
  • Accepted:2018-05-07 Online:2018-12-01 Published:2018-12-01
  • Contact: Shi Bin,E-mail:shibin@nju.edu.cn E-mail:shibin@nju.edu.cn

摘要: 布里渊光频域分析技术(Brillouin Optical Frequency Domain Analysis,BOFDA)是全分布式光纤感测技术中的一种,具有独特的测试与监测优势. 将BOFDA应用于海上超长PHC(Prestressed High Strength Concrete)管桩内力测试,并在超长PHC管桩成桩过程中,就将传感光缆植入桩身中,可明显提高传感光缆的成活率和测试精度. 现场测桩试验结果表明:在超长PHC管桩成桩过程中传感光缆的植入工艺是十分成功的,桩身轴力和侧摩阻力测试结果能够很好地反映桩身内力的分布变化规律,成效显著,为PHC管桩,特别是海上超长PHC管桩的内力测试提供了一种新的内力测试方法,值得推广.

关键词: 超长PHC管桩, BOFDA, 传感光缆布设, 内力测试, 现场试验

Abstract: Brillouin Optical Frequency Domain Analysis(BOFDA)technology is one of the full distributed optical fiber sensing technology and has unique advantages in sensing and monitoring. In this paper,BOFDA was applied on the inner force test of super-long PHC(prestressed high strength concrete)pile at sea. The sensing optical fiber cables were embedded into the pile in the productive process of the PHC pile. This process greatly increased the survival rate of optical fiber cables and accuracy of test. The result of the field test shows that the process of embedding sensing optical fiber cables was very successful and the test results of axial force and skin friction can reflect the distribution rule of the inner force of the pile. This process is effective and provides a new inner force test method of PHC pile,especially super-long PHC pile at sea. It’s worth promoting.

Key words: PHC pile, Brillouin Optical Frequency Domain Analysis(BOFDA), sensing optical fiber cables deployment, inner force test, in situ test

中图分类号: 

  • TU473
[1] 蔡 健,周万清,林奕禧等. 深厚软土超长预应力高强混凝土管桩轴向受力性状的试验研究. 土木工程学报,2006,39(10):102-106,116.(Cai J,Zhou W Q,Lin Y X,et al. Experimental study on the axial compressive behavior of super-long PHC pipe piles in deep soft soils. China Civil Engineering Journal,2006,39(10):102-106,116.)
[2] 史永强,赵俭斌,郭 卉等. 静压管桩内力测试技术研究. 工程勘察,2012(1):20-22.(Shi Y Q,Zhao J B,Guo H,et al. Study on internal force test technology of statically pressed pipe pile. Geotechnical Investigation & Surveying,2012(1):20-22.)
[3] 张晓炜. 试桩测试方法对桩基承载特性的影响研究. 岩土力学,2005,26(11):1819-1822,1833.(Zhang X W. Study on the influence of test methods on the bearing behaviors of piles. Rock and Soil Mechanics,2005,26(11):1819-1822,1833.)
[4] 黄生根,梅世龙,龚维明. 南盘江特大桥岩溶桩基承载特性的试验研究. 岩石力学与工程学报,2004,23(5):809-813.(Huang S G,Mei S L,Gong W M. Testing study on bearing behavior of piles for Nanpan river great bridge in karst area. Chinese Journal of Rock Mechanics and Engineering,2004,23(5):809-813.)
[5] 刘争宏,郑建国,于永堂等. 湿陷性黄土场地PHC桩竖向承载性状试验研究. 岩土工程学报,2010,32(S2):111-114.(Liu Z H,Zheng J G,Yu Y T,et al. Vertical bearing behaviors of PHC piles in collapsible loess. Chinese Journal of Geotechnical Engineering,2010,32(S2):111-114.
[6] Glisic B,Inaudi D,Nan C,et al. Pile monitoring with fiber optic sensors during axial compression,pullout,and flexure tests. Transportation Research Record:Journal of the Transportation Research Board,2002,1808(1):11-20.
[7] Pelecanos L,Soga K,Chunge M P M,et al. Distributed fibre-optic monitoring of an Osterberg-cell pile test in London. Géotechnique Letters,2017,7:1-9.
[8] 魏广庆,施 斌,贾建勋. 分布式光纤传感技术在预制桩基桩内力测试中的应用. 岩土工程学报,2009,31(6):911-916.(Wei G Q,Shi B,Jia J X. Application of distributed optical fiber sensing to testing inner force of prefabricated piles. Chinese Journal of Geotechnical Engineering,2009,31(6):911-916)
[9] 李忠义,童恒金,魏广庆等. 分布式光纤感测技术在混凝土预制管桩测试中的应用研究. 中国水运,2014,6(14):347-349.
[10] 朴春德,施 斌,魏广庆等. 分布式光纤传感技术在钻孔灌注桩检测中的应用.岩土工程学报,2008,30(7):976-981.(Piao C D,Shi B,Wei G Q,et al. Application of distributed fiber optic sensing techniques in bored pile detection. Chinese Journal of Geotechnical Engineering,2008,30(7):976-981.)
[11] 江 宏. PPP-BOTDA分布式光纤传感技术及其在试桩中应用. 岩土力学,2011,32(10):3190-3195.(Jiang H. PPP-BOTDA distributed fiber optic sensing techniques and its application to pile tests. Rock and Soil Mechanics,2011,32(10):3190-3195.)
[12] 施 斌,徐洪钟,张 丹等. BOTDR应变监测技术应用在大型基础工程健康诊断中的可行性研究. 岩石力学与工程学报,2004,23(3):493-499.(Shi B,Xu H Z,Zhang D,et al. Feasibility study on application of botdr to health monitoring for large infrastructure engineering. Chinese Journal of Rock Mechanics and Engineering,2004,23(3):493-499.)
[13] Bernini R,Minardo A,Zeni L. Distributed sensing at centimeter-scale spatial resolution by BOFDA:Measurements and signal processing. IEEE Photonics Journal,2012,4(1):48-56.
[14] Nikles M,Thevenaz L,Robert P,et al. Brillouin gain spectrum characterization in single-mode optical fibers. Journal of Lightwave Technology,1997,15(10):1842-1851.
[15] 曹鼎峰,施 斌,严珺凡等. BOFDA技术综述及用于岩土工程监测的可行性研究. 防灾减灾工程学报,2013,33(Sl):132-137.(Cao D F,Shi B,Yan J F,et al. BOFDA Technology overview and Feasibility Study for Geotechnical Engineering Monitoring. Journal of Disaster Prevention and Mitigation Engineering,2013,33(Sl):132-137.) 
[16] 王 兴,施 斌,魏广庆等. 土木与岩土工程监测新技术——BOFDA的性能与特点. 防灾减灾工程学报,2015,35(6):763-769.(Wang X,Shi B,Wei G Q,et al. A Novel Technique for Civil and Geotechnical Engineering Monitoring:Performance and Characteristics of BOFDA. Journal of Disaster Prevention and Mitigation Engineering,2015,35(6):763-769.)
[17] 王 兴,施 斌,张 丹等. BOFDA分布式光纤监测技术及其在桩基测试中的应用. 工程勘察,2015(12):13-17.(Wang X,Shi B,Zhang D. BOFDA distributed fiber optic sensing technique and its application in pile testing. Geotechnical Investigation & Surveying,2015(12):13-17.)
[18] 中华人民共和国住房和城乡建设部. 建筑基桩检测技术规范. JGJ 106-2014.(Housing and Urban-Rural Development of the People’s Republic of China. Technical code for testing of building foundation piles. JGJ 106-2014.)
[19] 朱鸿鹄,殷建华,洪成雨等. 基于光纤传感的边坡工程监测技术. 工程勘察,2010,38(3):6-10,14.(Zhu H H,Yin J H,Hong C Y,et al. Fiber optic based monitoring technologies of slope engineering. Geotechnical Investigation & Surveying 2010,38(3):6-10,14.)
[20] 朱友群,朱鸿鹄,孙义杰等. FBG-BOTDA联合感测管桩击入土层模型试验研究. 岩土力学,2014,35(S2):695-702.(Zhu Y Q,Zhu H H,Sun Y J,et al. Model experiment study of pipe pile driving into soil using FBG-BOTDA sensing monitoring technology. Rock and Soil Mechanics,2014,35(S2):695-702.)
[21] Zhu H H,Ho A N L,Yin J H,et al. An optical fibre monitoring system for evaluating the performance of a soil nailed slope. Smart Structures and Systems,2012,9(5):393-410.
[1] 卢 毅,于 军,龚绪龙,王宝军,魏广庆,季峻峰. 基于DFOS的连云港第四纪地层地面沉降监测分析[J]. 南京大学学报(自然科学版), 2018, 54(6): 1114-1123.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 徐扬,周文瑄,阮慧彬,孙雨,洪宇. 基于层次化表示的隐式篇章关系识别[J]. 南京大学学报(自然科学版), 2019, 55(6): 1000 -1009 .
[2] 刘作国,陈笑蓉. 汉语句法分析中的论元关系模型研究[J]. 南京大学学报(自然科学版), 2019, 55(6): 1010 -1019 .
[3] 李勤,陆现彩,张立虎,程永贤,刘鑫. 蒙脱石层间阳离子交换的分子模拟[J]. 南京大学学报(自然科学版), 2019, 55(6): 879 -887 .
[4] 王冬丽,申俊峰,邱海成,杜佰松,李建平,聂潇,王业晗. 辽宁五龙金矿黄铁矿标型特征研究及深部找矿预测[J]. 南京大学学报(自然科学版), 2019, 55(6): 898 -915 .
[5] 党政,代群威,安超,彭启轩,卓曼他,杨丽君. 静态水蚀条件下自然钙华预制块的溶出特性研究[J]. 南京大学学报(自然科学版), 2019, 55(6): 916 -923 .
[6] 段友祥,柳璠,孙歧峰,李洪强. 基于相带划分的孔隙度预测[J]. 南京大学学报(自然科学版), 2019, 55(6): 934 -941 .
[7] 郑文萍,刘韶倩,穆俊芳. 一种基于相对熵的随机游走相似性度量模型[J]. 南京大学学报(自然科学版), 2019, 55(6): 984 -999 .
[8] 许汇源,侯读杰,刘全有. 东营凹陷沙河街组泥页岩中正丙基胆甾烷与异海绵烷的研究:硫循环对有机质富集的影响[J]. 南京大学学报(自然科学版), 2020, 56(3): 366 -381 .
[9] 戴海亮,沈斌,李开开,张小涛,徐学敏,许智超,周晶晶. 地质条件约束下川北二叠系大隆组富有机质页岩热模拟生烃过程及特征研究[J]. 南京大学学报(自然科学版), 2020, 56(3): 382 -392 .
[10] 杜彦男,吴孔友,刘寅,林红梅,党思思,李彦颖,徐进军. 断陷盆地边界断裂结构特征及物性差异定量评价——以车镇凹陷埕南断裂为例[J]. 南京大学学报(自然科学版), 2020, 56(3): 405 -417 .