海洋废弃平台桩基拆除绳锯机研制及其动力学研究
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摘要
随着海洋石油工业的迅猛发展,废弃的油气平台越来越多,如何安全、环保、经济的拆除掉这些平台,成为世界各国海洋工程公司越来越关心的问题。金刚石绳锯机在废弃平台桩基拆除领域的应用历史不长,但是它在此领域的优势越来越为人们所认识。我国在该项技术发展方面起步较晚,提出研制一种绳锯机使它完成废弃平台桩基拆除任务,并且能安全、稳定和高效的工作越来越成为该领域急需解决的一项关键技术。
     本课题来源于中国海洋石油总公司科技发展计划项目(项目编号:C/KJFH001-2005),此项目是以国家“863”计划重大专项(项目编号:2002AA6020212-1)“渤海大油田勘探开发关键技术”所属专题“海底管道修复技术”中的管道切割金刚石绳锯机技术为基础。目的是研制出一种能够完成废弃平台桩基拆除任务的金刚石绳锯机,并且对其关键技术进行研究,提高它的智能化作业水平,为我国的海洋石油工程进行技术储备,进而为参与国际市场竞争打下一定的基础。
     论文综述了国内外海洋废弃平台桩基拆除的现状及其常用的五种切割方法,并且对它们进行了分析比较,其中重点概述了金刚石绳锯机的发展历程及其在桩基拆除领域的最新进展。
     根据废弃平台桩基拆除绳锯机的技术要求,参考国外的设计经验,考虑国内现有的技术条件,提出了废弃平台桩基拆除绳锯机的总体方案,包括机械本体结构、液压系统和检测控制系统。在充分论证的基础上,完成了机械本体各部分结构和测控系统的设计,研制出了废弃平台桩基拆除绳锯机工程样机。
     文中对绳锯机夹紧装置的最小夹紧力计算进行了研究。针对绳锯机工作时的特殊受力状态,进行了模型简化,对夹紧位置处的受力进行了理论分析,并且证明了绳锯机夹紧装置能实现型封闭。分别对绳锯机静态条件下一次夹紧,分步夹紧两种情况进行了分析,提出了各自条件下最小夹紧力的多目标优化求解数学模型。分析了夹紧瓣与桩基接触部分在夹紧时的动态相互作用后,提出了动态条件下的最小夹紧力多目标优化求解数学模型。根据绳锯机的实际作业工况,采用三种数学模型对最小夹紧力进行了求解。比较三种计算结果,为绳锯机的结构优化设计和液压系统的设计提供了一定的理论依据。
     根据绳锯机切割框架的结构,采用图形理论建模法,建立了串珠绳闭环切割运动的动力学方程。分析了驱动轮与串珠绳之间的相互作用,得到了驱动轮稳定和非稳定运行情况下的力矩传递计算方法。分析了串珠绳切割运动时的横向振动诱因,建立了横向振动的动力学方程,将方程的求解结果与实验相结合,提出了切割桩基时减小串珠绳横向振动的切割工艺。针对串珠绳切割单层管桩基的冲击特性,进行了理论分析,得到了串珠绳轴向冲击时的动力学模型,采用有限元瞬态动力学仿真的方法对冲击过程进行了仿真,分析了仿真结果。通过实验比较了切割单层管桩基和复合桩基时串珠绳的工作状态和切割后的桩基断面,并且得到了切割单层管桩基时切割效率与串珠间距的关系。
     通过分析国内外现有的柔性体张力检测装置,针对废弃平台桩基拆除绳锯机的实际工作特点,自行研制了一种张紧检测装置,它同时具有串珠绳张紧和张力测量两种功能。文中论述了检测装置中压力传感器的设计原理和方法。考虑到检测装置中张紧轮的动态偏心特性对张力测量结果的影响,提出了一种理论修正公式,实验表明了此公式的合理性。
     在建立的废弃平台桩基拆除绳锯机实验平台上进行切割性能实验,实验表明绳锯机能完成直径为48”的桩基切割任务,并且验证了液压系统和检测控制系统的稳定性。测量了绳锯机的切割工艺参数,给出了各参数之间的相互影响关系,得到了切割桩基截面不同位置时切削速度和进给速度的最佳配合关系,建立了径向切削力和切向切削力的经验公式。切割实验为绳锯机实际工程施工的参数选择提供了依据。
With the swift and violent development of the offshore oil industry, discardedoil gas platforms become more and more, how to remove those platform in asafer, more efficient, more environmentally compatible way becomes a questionthat each country Offshore Engineering Company is increasingly interested in.Itshistory is not very long that wire saw was applied in the field of removingdiscarded platform piles,but its advantage in this field is being increasinglyrecognized by people.Our country has fall behind the other country in the field oftechnology.To develop a wire saw that can safely, stably, efficiently cut discardedplatform pile is a urgent key technology.
     The study is funded by CNOOC technology development project(itemnumbers: C/KJFH001-2005), it bases on diamond wire saw cutting pipelinetechnological which belongs to special topic "Seabed pipeline restorationtechnologies" of the national "863" project important special items "Bohai bigoilfields exploration and exploitation key technologies" (item numbers:2002AA6020212-1).Its purpose is to develop a diamond wire saw that can cutdiscarded platform piles, research on its key technologies, improve its intelligentlevel of operation, implement technical storage for our country offshoreindustry ,and then lay the foundation for competition in the international market.
     Present situation and five routine cutting procedures of offshore discardedplatform piles removal at home and abroad are summarized and compared, ofwhich diamond wire saw development history and its latest application in pilesremoval field are particularly summarized.
     According to technical requirements of discarded platform piles removal wiresaw,referring to the design experience of foreign, and basing on domestictechnical condition, the whole scheme of discarded platform piles removal wiresaw is presented, including mechanical structure, hydraulic system, sensor systemand control system. Basing on sufficient demonstration, all structure of themachine base body and the measurement and control system are designed, anddiscarded platform piles removal wire saw engineering sample machine isdeveloped.
     Minimal clamp foce calculation of clamp device is researched in thesis.Model is simplified to special strained condition of wire saw working,force ofclamp position is analysed theoretically, and form-close of clamp device isproved.Basing on the analyse for wire saw once clamp or substep clamp in staticcondition,their minimal clamp foce multiple-objective optimization calculationmodels are presented. On the base of interacting analyse of clamp jaw with pilesin working, minimal clamp foce multiple-objective optimization calculationmodel of dynamic conditon is presented. Minimal clamp foce of three conditionsare calculated according to practicable working condition,and three results arecompared, which provide theoretical basis for structure optimization design andhydraulic system parameter selection.
     Dynamic equation of string bead wire cut motion is established with graphtheoretic modelling according to the structure of cut frame.Interaction of drivingsheave with string bead wire is analysed,driving torque computational proceduresare presented when sheave smooth and erratic turn. Causes of string bead wiretransverse vibration are analysed, transverse vibration dynamics equation isobtained, cut technology of minishing string bead wire transverse vibration ispresented by combining theoretical solution with test.Impact property is analysedwhen string bead wire cuts monolayer pipeline pile, dynamic model of string beadwire axial impact is obtained, course of impact is simulated with finite elementtransient dynamics analytical method, simulation results are analysed.Workingsituation and piles cross section that string bead wire cut monolayer pipe pile andcombined pipe pile are compared, the relation of cutting efficiency with stringbead spacing is gained by test.
     Existing flexible body tension detect devices at home and abroad areanalysed, contraposing practicable work characteristics of discarded platformpiles removal wire saw, a tension detect device with tension and detection functionis developed.Principle and method of pressure transducer in tension detect deviceare discussed. For dynamic off-center character of tension sheave having effect ontension measurement,a theoretical correction fomula is presented and proved bytest.
     Discarded platform piles removal wire saw testing platform isestablished.Cut performance test is carried out on it,test show that wire saw can fulfil 48" pile diameter cut task, hydraulic system, sensor system and controlsystem can stably operate. Cut technological parameters of wire saw are measured,interaction of parameters is analysed, best match of cutting speed and feed rate isgained when wire saw cut pile in different stage, experimental formulas of radialcutting force and tangential cutting force are established.Cutting tests provideparameters selection base for wire saw actual work.
引文
[1] 陈雯,窦义粟.世界海洋工程产业发展现状分析.中国水运.2007(8):199-200页
    [2] R W Ebdon,C P Ellinas. Decommissioning and Removal of Offshore Structures: A State of the Art EA3. Proceedings of the Eighth International Offshore M echanics and Arctic Engineering Symposium Ec3.1989,1
    [3] Peter H Prasthofer Platform Decommissioning-Finding the Right Balance.Proceedings of the 17th International Conference on Offshore Mechanics and Arctic Engineering. 1998
    [4] Win Thornton,James Wiseman.Current Trends and Future Technologies for the Decommissioning of Offshore Platforms.Proceedings of the Thirty-second Annual Offshore Technology Conference Ec3.2000,3
    [5] 胡云昌,阎宏生.废弃海洋桩基平台拆除方法研究报告[M].天津大学,2003,1
    [6] Dauterive, L., "Rigs-to-Reefs, Policy, Progress, and Perspective, " MMS 2000-073. U.S. Department of the Interior, Minerals Management Service,Gulf of Mexico OCS Region, New Orleans, LA, 2001
    [7] Gary De Marsh.The Use of Explosives in De commissioning and Salvage.Proceedings of the Annual Offshore Technology Conference.2000,3
    [8] P William Penney. Technical Issues in Platform Removal: Is OSPAR 98/3 Sustainable.Proceedings of the Eleventh International Offshore and Polar Engineering Conference. 2001,1
    [9] National Research Council, Marine Board, Committee on Techniques for Removing Fixed Offshore Structures, "An assessment of techniques for removing offshore structures," National Academy Press, Washington,D.C.,1999
    [10] Kaiser, M.J.A.G. Pulsipher and R.C. Byrd, "The science and technology of nonexplosive severance techniques,"Marine Technology Society Journal,38(1),2004: 29-38P
    [11] Pulsipher, A.G., ed., Proceedings: An International Workshop on Offshore Lease Abandonment and Platform Disposal: Technology, Regulation, and Environmental Effects,New Orleans, LA, 2005:15-17P
    [12] 彭学伦.水下爆破切割装置研究.海洋技术.2005(2):80-83页
    [13] 齐世福,刘定,刘好全,翟国锋.万吨巨轮水下切割爆破.工程爆破.2007,13(2):57-60页
    [14] 张正平,张宝国,刘文广,程才林.“金航”轮沉船水下爆破解体.工程爆破.2003,9(2):65-67页
    [15] Fanguy, D.J., "Coiled-tubing-conveyed hydro-mechanical pipe cutting: A safe,effective alternative to chemical and explosive severing methods," SPE 68365, Houston, TX,March 2001
    [16] Manago, F.and B. Williamson (eds.),Proceedings: Public Workshop,Decommissioning and Removal of Oil and Gas Facilities Offshore Califomia: Recent Experiences and Future Deepwater Challenges,September 1997, OCS Study MMS 98-0023
    [17] 王建生.自激振荡脉冲磨料射流的基本理论与切割特性[R].重庆:重庆大学,2000
    [18] 王建生.深水三危场合下的切割技术.海洋工程.2002,20(4):98-100页
    [19] Brandon, J.W., Ramsey, B., Macfarlane, J.,and D. Dearman, "Abrasive water-jet and diamond wire-utting technologies used in the removal of marine structures," OTC 12002. Houston,TX,2000:301-304P
    [20] Byrd,R.C.and E.R. Velazquez, "State of the art of removing large platforms located in deep water," OTC 12972,Houston,TX, May 2001
    [21] 陈冀瑜.耐磨抗断裂的金刚石串珠绳.石材.2007(11):30页
    [22] 谈耀麟.石材矿山开采与设备综述.石材.2001(7):41-43页
    [23] 姜荣超.多绳金刚石锯机切割板材获得进一步发展.石材.2007(9):44-46页
    [24] 齐荠.切削钢材的金刚石绳锯.超硬材料与工程.2001(4):36-41页
    [25] 张进生,张政梅,王志.新型石材回采金刚石串珠锯研究及创新设计.金刚石与磨料磨具工程.2006(4):17-20页
    [26] 谈耀麟.石材行业推广使用金刚石串珠绳锯的有关问题.石材.2007(11):31-33页
    [27] 罗锡裕.超硬材料的发展.粉末冶金技术.2000(2):32-37页
    [28] 刘燕.用小型绳锯加工石材及建筑材料的试验.石材.2006(9):30-34页
    [29] 姜荣超,陈欣宏,魏洪涛.技术创新在金刚石制品业中的重大作用.超硬 材料工程.2005(2):29-34页
    [30] W.Penger. Diamond wire saw contribution to new Berlin interchange.Industrial Diamond Review. 2000(60) :44-47P
    [31] N.Buttner, G. Schwan and P. Wunderlich. Travelling diamond wire saw for the processing of natural stone. Industrial Diamond Review.2006(59):221-224P
    [32] Wire sawing of concrete foundation.Industrial Diamond Review.1999(59):144-144P
    [33] http://www.Mariniqg.it
    [34] 廖原时,陶春广.金刚石串珠锯发展概述.石材,2001(6):22-29页
    [35] 杨志红.金刚石串珠绳锯在石材加工中的应用.石材.2008(1):14-17页
    [36] 廖原时.花岗石砂锯与多绳金刚石绳锯主要技术性能比较.石材.2002(12):6-12页
    [37] 谈耀麟.石材矿山开采与设备综述.石材.2001(7):41-43页
    [38] 王能友.金刚石串珠绳锯的应用.石材.2005(3):37-38页
    [39] 侯玉霞,赵东声.采用组合金刚石绳锯切割花岗石材板.金刚石与磨料磨具工程.1997(1):40页
    [40] 旭岩.国外石材行业用金刚石串珠绳锯的发展与现状.石材.2005(7):12-15页
    [41] A.Anher.50 wires for greater economy in block sawing of stone. Industrial Diamond Review,2001 (2):81-85P
    [42] http://idr-online.com/german/pages/archive/2004_1/05_art/Art05_01_04.htm
    [43] 张进生,张旭强,王志,黄波,刘德宝.基于OpenGL的金刚石串珠锯加工石材模拟仿真开发.机电一体化.2003(1):20-23页
    [44] 张进生,张政梅,王志.开采石材用新型金刚石串珠锯的研究开发.石材.2005(11):4-7页
    [45] 高伟,刘镇昌,王霖,马电波.硬脆材料的线锯切割加工技术.工具技术.2001(11):6-9页
    [46] Cook Matthew, Butler-Smith Paul. Study of diamond wire bead rotation.Industrial Diamond Review, 2003,53(555):79-81P
    [47] H.K.T(o|¨)nshoff, T.Friemuth,H.Hillmann-Apmann. Diamond tools for wire sawing metal components.Diamond and Related Materials.2002(11):742-748P
    [48] 李志宏.金刚石绳锯锯切金属构件的研究.金刚石与磨料磨具工程.2002(3):16-20页
    [49] B.Vogt. Bow of the Kursk cut with 'diamond chain'. Industrial Diamond Review.2003 (3) : 151-154P
    [50] http://www.cut-group.com
    [51] http://www.Tidal.com.my/cutdwcs.htm
    [52] http://www.Subbottomcutter.com
    [53] http://www.Dimec.unige.it/PMAR/
    [54] E.Cavallo,R.C.Michelini,R.M.Molfino"A Remote Operated Robotic Platform for Underwater Decommissioning Tasks",35th international Symposium on Robotics ISR 2004,paris, 2004:23-26P
    [55] 周斌,郭桦.国产绳锯的开发现状及发展前景.石材.2001(6):30-33页
    [56] 张荣清.石材锯切金刚石锯片的现状与发展.金刚石制品与石材加工信息通报.1996(3):30-33页
    [57] 李丹晨.异型石材加工的新秀--数控绳锯.石材.1998(2):11-12页
    [58] 徐湘涛.加快金刚石绳锯开采技术的推广应用.石材.1997(1):17页
    [59] 浦勇.论我国大理石锯切开采现状.石材.2000(4):26-27页
    [60] http://www.123k.com/bzj/sc2000b.htm
    [61] http://www.guangda-machinery.Com.cn/production-machine5.htm
    [62] F.Cepolina,R.C. Michelini "Self adaptable clamping tools for multi-grasping", in Proc.of IEEE International Conference on Intelligent Manipulation and Grasping IMG 04, Genova,Italy, 1-2 July 2004,ISBN 88 900 426-1-3
    [63] K. DeLaurentis, C. Mavroidis: "Mechanical Design of a Shape Memory Alloy Actuated Prosthetic Hand", Technologyand Health Care, Vol. 10, No.2, 2002:91-106P
    [64] P. Dario, C. Laschi, M.C. Carrozza, E. Guglielmelli, G. Teti,B. Massa, M Zecca, D. Taddeucci, F. Leoni: "An Integrated Approach for the Design and Development of a Grasping and Manipulation System in Humanoid Robotics", IEEE/RSJ International Conference on Intelligent Robots and Systems -IROS 2000, Takamatsu, Japan, October 30 - November 5, 2000
    [65] 史彩娟,刘艳琴,张建.智能夹具的设计与实现.河北理工大学学报(自然 科学版).2008(1):71-74页
    [66] 刘金山,廖文和,刘长毅,郭宇.基于特征相似性的夹具变型设计方法研究.中国机械工程.2008(4):379-384页
    [67] 田俊杰,李振国,曲政.某石油平台海水冷却系统腐蚀分析与防护方法.腐蚀与防护.2007(9):476-478页
    [68] 胡会利,李宁,程瑾宁,王雅芬.用电化学噪声法研究镀锌层在海水中的腐蚀行为.材料保护.2007(8):1-5页
    [69] 吴真光,梁明君,刘波.某艇海水管路的腐蚀与防护.中国修船.2000(4):7-9页
    [70] 王维,钟康民.三种基于形封闭圆偏心轮机构与杠杆式压板的夹紧装置[J].机械制造,2007,45(3):64-65页
    [71] M. Higashimori, M. Kaneko, A. Namiki and M. Ishikawa, Design of the 100 g capturing robot based on dynamic preshaping, International Journal of Robotics Research 24 (2005) (9):743-753P
    [72] E.A. Al-Gallaf, "Multi-fingered robot hand optimal task force distribution Neural inverse kinematics approach," IEEE Trans. Robotics and Autonomous Systems,vol. 54, January 2006:34-51P
    [73] J. K. Salisbury and B. Roth, "Kinematic and force analysis of articulated hands," ASME J.Mech., Transmissions, Automat. Design, vol. 105,2002:33-41P
    [74] X.Zhu, H.Ding,and J. Wang, "Grasp analysis and synthesis based on a new quantitative measure," IEEE Trans. Robot.Automat., vol. 19,2003:942-953P
    [75] L. Birglen and C. Gosselin, Kinetostatic analysis of underactuated fingers,IEEE Transactions on Robotics and Automation 20 (2004) (2):211-221P
    [76] E.C. DeMeter, "The min-max load criteria as a measure of machining fixture performance," ASME Journal of Engineering for Industry, Vol. 116,2004:500- 507P
    [77] B. Li and S.N. Melkote, "An elastic contact model for the prediction of workpiece-fixture contact forces in clamping," ASME Journal of Manufacturing Science and Engineering, Vol. 121,1999:485-493P
    [78] Y. Kang, Y. Rong, and J.A. Yang, "Geometric and kinetic model based computer-aided fixture design verification," ASME Journal of Computing and Information Science in Engineering, Vol. 3, 2003:187-199P
    [79] 夏震寰.现代水力学(四)波浪力学[M].高等教育出版社,1992
    [80] 曹妤,姚谦峰,黄炜.多目标优化设计方法在密肋复合墙体中的应用.陕西建筑.2006(12):9-11页
    [81] 吴惠仙,罗和治.一类非光滑广义分式规划的Kuhn-Tucker型最优性必要条件.数学研究与评论.2007(4):709-714页
    [82] K.L. Johnson, Contact Mechanics, Cambridge University Press, 1985
    [83] P. Chandra, S. M. Athavale, R. E. DeVor and S. G Kapoor,"Effects of preloads on the surface flatness during fixturing of flexible workpieces",Proceedings of the Second S. M. Wu Symposium on Manufacturing Science,vol 2, 1996:146-152P
    [84] G.E. Liveseya, and H.A. Donegan. Queen's University Belfast, Using classical graph theory to generate non-isomorphic floorplan distributions in the measurement of egress complexity. Mathematical and Computer Modelling, 2008,7:1-10P
    [85] Eric Babson, H(?)l(?)ne Barcelo, Mark de Longueville and Reinhard Laubenbacher, Homotopy theory of graphs, J. Algebraic Combin. 24 (1),2006:31-44P
    [86] H(?)l(?)ne Barcelo and Reinhard Laubenbacher, Perspectives on A-homotopy theory and its applications, Discrete Math. 298 (1-3) (2005) : 39-61P
    [87] Graham R. Brightwell and Peter Winkler, Graph homomorphisms and long range action, Graphs, Morphisms and Statistical Physics, DIMACS Ser.Discrete Math. Theoret. Comput. Sci. vol. 63, Amer. Math. Soc, Providence,RI (2004) :29-47P
    [88] Sherman Y.T. Lang, "Graph-theoretic modelling of epicyclic gear systems,"Mechanism and Machine Theory, Volume 40, Issue 5, May 2005 : 511-529P
    [89] John J. McPhee and Scott M. Redmond, "Modelling multibody systems with indirect coordinates," Computer Methods in Applied Mechanics and Engineering, Volume 195, Issues 50-51, 15 October 2006: 6942-6957P
    [90] 朴明伟.面向结构的多刚体动力学系统线图.系统仿真学报.2003,15(10):1402-1404页
    [91] 张岚.水下金刚石绳锯机设计及原理实验样机实验研究.哈尔滨工程大学博士学位论文.2005:52页
    [92] S.E. Bechtel, S. Vohra, K. I. Jacob, and C. D. Carlson, "The Stretching and Slipping of Belts and Fibers on Pulleys," ASME Journal of Applied Mechanics MARCH 2000, Vol. 67:197-206P
    [93] 刘敏,荣伟.飞船舱.伞系统稳降阶段动力学模型的建立.航天器工程测.2008(3):78-82页
    [94] 王杰,陶宏锦,施伯明,雷毅.钢丝绳捻制张力动态监控系统的研制.无损检测.2004(9):437-440页
    [95] 王金峰,蓝箭增,魏晓艳.多绳摩擦提升钢丝绳张力差的测定.能源技术与管理.2007(6):94-95页
    [96] 黄民,李恩,魏任之.钢绳芯胶带张力超限在线监测方法研究.起重运输机械.2002(4):30-33页
    [97] 曹立文,孟庆鑫,唐海涛等.水下金刚石绳锯机张力检测系统.传感器与微系统.2006(2):67-69页
    [98] 张秀娟,薛庆军.多绳提升机钢丝绳张力测量方法分析.矿山机械.2003(8):46-48页
    [99] SasaharaH, ObikawaT, Shirakashi·FEManalysis of cutting sequence effect on characteristics in machined layer·Journal of Materials Processing Mechanical Technology,1996, 62: 448-453P
    [100] Liu C R, Guo Y B·Finite element analysis of the effect of sequential cuts and tool-chip friction on residual stresses in a ma-chine layer·International Journal of Mechanical Sciences, 2006(42): 1069-1086P
    [101] 张建华,葛培琪,张磊.基于概率统计的磨削力研究.中国机械工程.2007(20):2398-2402页
    [102] 王福明,黄云.基于砂带磨削的铝合金磨削力和表面粗糙度的研究.机床与液压.2008(1):43-45页
    [103] Shu-Yi Tu, Ming-Der Jean, Jen-Ting Wang and Chun-Sen Wu. A robust design in hardfacing using a plasma transfer arc.The International Journal of Advanced Manufacturing Technology. 2006,27(9-10):889-896P
    [104]G.Y.Li, M.J.Tan,K.M. Liew. Springback analysis for sheet forming processes by explicit finite element method in conjunction with the orthogonal regression analysis. International Journal of Solids and Structures, 1999,36(30): 4653-4668P
    [105] C.S.Hsieh, T.S.Liou.. Analysis of orthogonal array experiments using the multivariate orthogonal regression method. Quality Engineering, 2001,13(3): 449-455P
    [106]F.Rojas, J.M.Gorriz and O.Valenzuela.Analysis of Variance of Three Contrast Functions in a Genetic Algorithm for Non-linear Blind Source Separation.Lecture Notes in Computer Science, 2005,35(12):1043P
    [107] Robert A. Peterson.A Meta-Analysis of Variance Accounted for and Factor Loadings in Exploratory Factor Analysis. Marketing Letters, 2000,11(3): 261-275P

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