土遗址楠竹锚固界面传力过程研究

详细信息    查看全文 | 推荐本文 |

英文篇名：STUDY ON THE FORCE TRANSFER PROCESS OF THE ANCHORAGE INTERFACE OF BAMBOO BOLT IN THE RAMMED EARTH SITES 作者：芦苇 ; 赵冬 ; 李东波 ; 毛筱霏 英文作者：Lu Wei;Zhao Dong;Li Dongbo;Mao Xiaofei;College of Science, Xi'an University of Architecture and Technology; 关键词：锚固 ; 界面 ; 剪应力 ; 完全脱粘 ; 粘结–滑移模型 ; 有效锚固长度 英文关键词：anchorage;;interface;;shear stress;;complete debonding;;bond-slip model;;effective anchorage length 中文刊名：LXXB 英文刊名：Chinese Journal of Theoretical and Applied Mechanics 机构：西安建筑科技大学理学院; 出版日期：2018-12-20 15:35 出版单位：力学学报 年：2019 期：v.51 基金：国家自然科学基金(51878547);; 中国博士后基金(2018M633478)资助项目 语种：中文; 页：LXXB201902023 页数：16 CN：02 ISSN：11-2062/O3 分类号：224-239

摘要

竹木锚固技术近年来被广泛应用于土遗址文物加固保护中,但其锚固界面传力机理尚不明确,严重制约着锚固技术的科学化、规模化应用.相关研究成果已经证实了合理的锚固界面粘结–滑移模型对锚固系统性能预测的重要性,本文在此基础上以楠竹–改性泥浆–夯土锚固系统为例,基于考虑完全脱粘现象的三线型粘结–滑移模型开展了锚固界面传力全过程研究.首先将锚固界面传力全过程分为6个连续阶段,分别对各阶段对应的界面应力、应变分布与演化过程进行理论解析,推导了锚杆轴向变形、界面滑移量、界面剪应力、界面剪应变等参数的封闭解,同时给出了极限锚固力与有效锚固长度的计算方法.在此基础上,通过识别载荷–位移曲线特征点对粘结–滑移模型参数进行了标定.最后采用两个土遗址原位拉拔试验对理论解析模型的合理性进行了对比验证,同时着重分析了锚固长度与锚杆轴向刚度两个因素对锚固性能的影响规律.本文提出的解析模型对存在完全脱粘现象的锚固界面传力过程分析具有广泛适用性,能够为土遗址锚固工程设计提供参考与指导.
        Bamboo and wood anchoring technique has been widely used in the reinforcement of rammed earth sites in recent years. However, its force transfer mechanism at the anchorage interface is still unclear, which seriously restricts the large-scale application of anchorage technology in scientific way. Relevant research results have confirmed the importance of a reasonable bond-slip model for predicting the performance of the anchorage system. Based on this, the bamboomodified slurry-rammed earth anchoring system is taken as an example to study the whole process of force transfer in anchorage interface based on tri-linear bond-slip model considering complete debonding phenomenon. Firstly, the force transfer process of the anchorage interface was divided into six successive stages, and the corresponding interface stress,strain distribution and evolution process are analyzed theoretically, the closed form solutions of bolt axial deformation,anchorage interface slip, shear stress and shear strain were also derived. Meanwhile, the calculation method of ultimate anchorage force and effective anchorage length has been proposed. On this basis, the feature points parameters of bondslip model were calibrated by identifying the different stages of load-displacement curve. Finally, the rationality of the analytical model was validated against two in-situ pull-out tests in rammed earth sites. The influence of anchorage length and axial stiffness of anchor bolt on the anchoring performance was emphatically analyzed in the text. The analytical model proposed by this paper has wide applicability to the analysis of the force transfer process of anchorage interface with complete debonding phenomenon, and can provide reference and guidance for the design of anchoring engineering of rammed earth sites.

引文

1孙满利,王旭东,李最雄.土遗址保护初论.北京:科学出版社,2010(Sun Manli,Wang Xudong,Li Zuixiong.Initial Discussion of Earthen Sites.Beijing:China Science Publishing and Midia Ltd.,2010(in Chinese))
    2 Zhao D,Lu W,Wang YL,et al.Experimental studies on earthen architecture sites consolidated with BS materials in arid regions.Advances in Materials Science and Engineering,2016,2016:1-13
    3裴强强,王旭东,郭青林等.干旱环境下土遗址夯补支顶加固变形机制室内试验研究.岩土力学,2018,39(8):2755-2764(Pei Qiangqiang,Wang Xudong,Guo Qinglin,et al.Laboratory test of deformation mechanism of rammed roof-propping reinforcement at earthen heritage sites in arid environment.Rock and Soil Mechanics,2018,39(8):2755-2764(in Chinese))
    4 Aguilar R,Marques R,Sovero K,et al.Investigations on the structural behaviour of archaeological heritage in Peru:From survey to seismic assessment.Engineering Structure.2015,95:94-111
    5张景科,郭青林,李最雄等.土遗址锚固机理初探.兰州:兰州大学出版社,2014(Zhang Jingke,Guo Qinglin,Li Zuixiong,et al.Preliminary Study on Anchorage Mechanism of Rammed Earth Sites.Lanzhou:Lanzhou University Press,2014(in Chinese))
    6张顶立.隧道及地下工程的基本问题及其研究进展.力学学报,2017,49(1):3-21(Zhang Dingli.Essential issues and their research progress in tunnel and underground engineering.Chinese Journal of Theoretical and Applied Mechanics,2017,49(1):3-21(in Chinese))
    7何川,齐春,封坤等.基于D-P准则的盾构隧道围岩与衬砌结构相互作用分析.力学学报,2017,49(1):31-40(He Chuan,Qi Chun,Feng Kun,et al.Theoretical analysis of interaction between surrounding rocks and linging strcture of shield tunnel based on Drucker-Prager yield criteria.Chinese Journal of Theoretical and Applied Mechanics,2017,49(1):31-40(in Chinese))
    8孙见君,嵇正波,马晨波.粗糙表面接触力学问题的重新分析,力学学报,2018,50(1):68-77(Sun Jianjun,Ji Zhengbo,Ma Chenbo.Reanalysis of the contact mechanics for rough surfaces.Chinese Journal of Theoretical and Applied Mechanics,2018,50(1):68-77(in Chinese))
    9王东,徐超,胡杰等.连接结构接触界面非线性力学建模研究.力学学报,2018,50(1):44-57(Wang Dong,Xu Chao,Hu Jie,et al.Nonlinear mechanics modeling for joint interface of assembled structure.Chinese Journal of Theoretical and Applied Mechanics,2018,50(1):44-57(in Chinese))
    10崔凯,王东华,谌文武等.基于改性糯米灰浆的3种锚杆锚固性能对比研究.岩土力学,2018,39(2):498-506(Cui Kai,Wang Donghua,Chen Wenwu,et al.Comparative study of anchorage performance of three types of bolts fully grouted by modified glutinous rice mortar.Rock and Soil Mechanics,2018,39(2):498-506(in Chinese))
    11戎岩,李玉虎,曹静等.胶木棒锚杆在唐皇城含光门土遗址锚杆锚固中的应用.陕西师范大学学报(自然科学版),2016,44(3):69-74(Rong Yan,Li Yuhu,Cao Jing,et al.Application of bakelite rod anchor in protection of Tang Hanguangmen Entrance remains.Journal of Shaanxi Normal University(Natural Science Edition),2016,44(3):69-74(in Chinese))
    12孙满利,李最雄,王旭东等.南竹加筋复合锚杆加固土遗址研究.岩石力学与工程学报,2008,27(supp.2):3381-3385(Sun Manli,Li Zuixiong,Wang Xudong,et al.Study on reinforcement of earthen sites by bamboo-steel composite anchor.Chinese Journal of Rock Mechanics and Engineering,2008,27(supp.2):3381-3385(in Chinese))
    13张景科,王南,谌文武等.夯筑土遗址中基于PS-(F+C)浆液的木锚杆锚固性能.四川大学学报(工程科学版),2015,47(4):52-60(Zhang Jingke,Wang Nan,Chen Wenwu,et al.Anchor performance of wood bolt fully grouted by PS-(F+C)slurry in rammed earth sites.Journal of Sichuan University(Engineering Science Edition),2015,47(4):52-60(in Chinese))
    14张景科,王南,樊孟等.夯土介质中基于PS浆液的楠竹锚杆锚固特性.工程地质学报,2016,24(5):1028-1036(Zhang Jingke,Wang Nan,Fan Meng,et al.Anchor performance of bamboo bolt grouted by PS solution-based slurry among rammed earth medium.Journal of Engineering Geology,2016,24(5):1028-1036(in Chinese))
    15王南,张景科,单婷婷等.烧料礓石改性浆体-遗址土体界面抗剪性能试验,岩石力学与工程学报,2016,35(supp.2):4279-4286(Wang Nan,Zhang Jingke,Shan Tingting,et al.Experiment on shear resistance behavior of interface between slurry modified by calcined ginger nuts and soil mass of earthen sites.Chinese Journal of Rock Mechanics and Engineering,2016,35(supp.2):4279-4286(in Chinese))
    16崔凯,王东华,谌文武等.基于SH-(C+F)浆液锚杆锚固性能与机理研究.工程地质学报,2017,25(1):19-26(Cui Kai,Wang Donghua,Chen Wenwu,et al.Performance and mechanism of bolts fully grouted with SH-(C+F)slurry.Journal of Engineering Geology,2017,25(1):19-26(in Chinese))
    17张景科,谌文武,李最雄等.夹双筋体复合锚杆锚固性能与界面力学传递特征.中南大学学报(自然科学版),2014,45(2):563-569(Zhang Jingke,Chen Wenwu,Li Zuixiong,et al.Anchorage performance and interfacial mechanics transfer characteristics of composite bolt with double-strand.Journal of Central South University(Science and Technology),2014,45(2):563-569(in Chinese))
    18张景科,谌文武,李最雄等.夹Φ22 mm钢筋体复合锚杆原位锚固特性分析.岩土力学,2014,35(11):3139-3147(Zhang Jingke,Chen Wenwu,Li Zuixiong,et al.Analysis of in-situ anchoring characteristics of composite anchor containing steel bar(Φ22 mm).Rock and Soil Mechanics,2014,35(11):3139-3147(in Chinese))
    19毛筱霏.高昌故城遗址保护与锚杆加固应用技术研究.[博士论文].西安:西安建筑科技大学,2009(Mao Xiaofei.The protection of Gaochang Site and research on consolidated technology of bolt.[PhD Thesis].Xi’an:Xi’an University of Architecture and Technology,2009(in Chinese))
    20张艳军,张虎元,吕擎峰等.楠竹加筋复合锚杆应力传递理论模型.水文地质工程地质,2008,5:37-40(Zhang Yanjun,Zhang Huyuan,L¨u Qingfeng,et al.Stress transfer model of bamboo-steel composite anchor,Hydrogeology and Engineering Geology,2008,5:37-40(in Chinese))
    21张虎元,王晓东,王旭东等.楠竹加筋复合锚杆内部界面粘结滑移模型.岩土力学,2011,32(3):789-796(Zhang Huyuan,Wang Xiaodong,Wang Xudong,et al.Bond-slip model for bamboo-steel cable composite anchor.Rock and Soil Mechanics,2011,32(3):789-796(in Chinese))
    22 Farmer IW.Stress distribution along a resin grouted rock anchor.International Journal of Rock Mechanics and Mining Sciences&Geomechanics Abstracts,1975,12:347-351
    23 Aydan O,Lchikawa Y,Kawamoto T.Load bearing capacity and stress distribution in/along rockbolts with inelastic behaviour of interfaces//Proceedings of the 5th International Conference on Numerical Methods in Geomechanics,Nagoya,1985-4-1-4,Netherlands:Elsevier Science,1985:1281-1292
    24 Hyett AJ,Moosavi M,Bawden WF.Load distribution along fully grouted bolts,with emphasis on cable bolt reinforcement.International Journal of Numerical and Analytical Methods in Geomechanics,1996,20:517-544
    25张季如,唐宝付.锚杆载荷传递机理分析的双曲函数模型.岩土工程学报,2002,24(2):188-192(Zhang Jiru,Tang Baofu.Hyperbolic function model to analyze load transfer mechanism on bolts.Chinese Journal of Geotechnical Engineering,2002,24(2):188-192(in Chinese))
    26 Yazicit S,Kaiser PK.Bond strength of grouted cable bolts.International Journal of Rock Mechanics and Mining Sciences&Geomechanics Abstracts,1992,29(3):279-292
    27谢晶晶.纤维增强塑料筋锚杆锚固机理及设计方法的研究.[硕士论文].郑州:郑州大学,2002(Xie Jingjing.Study on anchorage behavior and design method of fiber reinforced plastic bolts.[Master Thesis].Zhengzhou:Zhengzhou University,2002(in Chinese))
    28高丹盈,张钢琴.纤维增强塑料锚杆锚固性能的数值分析.岩石力学与工程学报,2005,24(20):3724-3729(Gao Danying,Zhang Gangqin.Numerical analysis of anchorage behavior of fiber reinforced plastic bolts.Chinese Journal of Rock Mechanics and Engineering,2005,24(20):3724-3729(in Chinese))
    29 Ma SQ,Nemcik J,Aziz N.An analytical model of fully grouted rock bolts subjected to tensile load.Construction and Building Materials,2013,49:519-526
    30 Ma SQ,Nemcik J,Aziz N,et al.Analytical model for rock bolts reaching free end slip.Construction and Building Materials,2014,57:30-37
    31 Ma SQ,Zhao ZY,Nie W,et al.A numerical model of fully grouted bolts considering the tri-linear shear bond-slip model.Tunnelling and Underground Space Technology,2016,54:73-80
    32 Zheng JJ,Dai JG.Analytical solution for the full-range pull-out behavior of FRP ground anchors.Construction and Building Materials,2014,58:129-137
    33 Zheng JJ,Dai JG.Prediction of the nonlinear pull-out response of FRP ground anchors using an analytical transfer matrix method.Engineering Structures,2014,81:377-385
    34 Ren FF,Yang ZJ,Chen JF,et al.An analytical analysis of the fullrange behaviour of grouted rockbolts based on a tri-linear bond-slip model.Construction and Building Materials,2010,24(3):361-370
    35 Yuan H,Teng JG,Seracino R,et al.Full-range behavior of FRP-to-concrete bonded joints.Engineering Structure,2004,26(5):553-565
    36 Lu W,Zhao D,Mao XF,et al.Experimental study on bond-slip behavior of bamboo bolt-modified slurry interface under pull-out load.Advances in Civil Engineering,2018,2018:1-23
    37 Laura BM,Michel TJ,Faouzi HH.A new analytical solution to the mechanical behaviour of fully grouted rockbolts subjected to pullout tests.Construction and Building Materials,2011,25:749-755
    38任非凡.南竹夹筋复合锚杆锚固机理研究.[博士论文].兰州:兰州大学,2009(Ren Feifan.Study on the anchorage mechanism of the bamboo-steel composite rockbolt.[PhD Thesis].Lanzhou:Lanzhou University,2009(in Chinese))