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OALib Journal期刊
ISSN: 2333-9721
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层状地基中考虑土体剪切效应的单桩振动阻抗分析
DOI: 10.3969/j.issn.1671-7627.2013.05.001, PP. 1-8
Keywords: 桩,土与基础动力相互作用,双参数地基,阻抗函数
Abstract:
在winkler模型中引入描述地基土剪切效应的第二地基参数,采用初参数法求解双参数(pasternak)地基模型中单桩水平振动的微分方程,运用传递矩阵法得到层状地基中单桩水平和回转振动的阻抗。与实例比较验证了理论推导及程序编制的正确性。分析表明:随着桩土弹模比的减小,第二地基参数对桩顶阻抗的影响有增大的趋势,此时使用双参数地基模型进行分析是必要的。对桩顶振动阻抗的影响因素(桩土弹模比、地基成层性、桩底边界条件、桩身长径比、量纲为1的频率)进行了参数化分析,结果表明:表层土的桩土弹模比是桩水平振动最重要的影响因素,振动阻抗随桩土弹模比的增大而减小,而有效桩长则随弹模比的增大而增大。
| [1] | rosama,maurizimj.theinfuenceofconcentratedmassesandpasternaksoilonthefreevibrationsofeulerbeams-exactsolution[j].journalofsoundandvibration,1998,212(4):573-581.
|
| [2] | filipicpf,rosalesamb.afurtherstudyaboutthebehavioroffoundationpilesandbeamsinawinkler-pasternaksoil[j].internationaljournalofmechanicalsciences,2002,44(1):21-36.
|
| [3] | doganq,mesuts.freevibrationofanaxiallyfunctionallygradedpilewithpinnedendsembeddedinwinkler-pasternakelasticmedium[j].structuralengineeringandmechanics,2011,40(4):583-594.
|
| [4] | novakm,nogamit,aboulef.dynamicsoilreactionsforplanestraincase[j].journaloftheengineeringmechanicsdivision,asce,1978,104(4):953-959.
|
| [5] | 胡昌斌,张涛.考虑桩土耦合作用时桩基扭转振动特性研究[j].工程力学,2007,24(3):147-153.
|
| [6] | 刘鑫,杨骁.悬浮桩水平振动的动力刚度[j].岩土力学,2008,29(4):1021-1027.
|
| [7] | gazetasg,dobryr.horizontalresponseofpilesinlayeredsoils[j].journalofgeotechnicalengineering,asce,1984,110(1):20-40.
|
| [8] | gazetasg,dobryr,tassoilasjl.verticalresponseofarbitrarilyshapedembeddedfoundations[j].journalofgeotechnicalengineering,asce,1985,111(6):750-770.
|
| [9] | makrisn,gazetasg.dynamicpile-soil-pileinteraction.partⅱ:lateralandseismicresponse[j].earthquakeengineeringandstructuraldynamics,1992,21(2):145-162.
|
| [10] | makrisn.soil-pileinteractionduringthepassageofrayleighwaves:ananalyticalsolution[j].earthquakeengineeringandstructuraldynamics,1994,23(2):153-167.
|
| [11] | 干刚,吴世明.桩基水平振动动力特性研究[j].浙江大学学报:自然科学版,1996,30(5):490-496.
|
| [12] | 胡安峰,谢康和,肖志荣.层状土中考虑剪切变形的单桩水平振动解析解[j].浙江大学学报:工学版,2005,39(6):871-886.
|
| [13] | 刘林超,闫启方,杨骁.sh简谐波作用下桩土横向动力相互作用解析分析[j].公路交通科技,2010,27(10):25-28.
|
| [14] | 蔡可键.水平简谐荷载作用下桥梁基桩的动力反应[j].岩土力学,2009,30(5):1504-1508.
|
| [15] | wug,finnwdl.dynamicelasticanalysisofpilefoundationsusingfiniteelementmethodinthefrequencydomain[j].canadiangeotechnicalengineeringjournal,1997,34(1):34-43.
|
| [16] | yokoyamat.vibrationsoftimoshenkobeam-columnsontwo-parameterelasticfoundations[j].earthquakeengineeringandstructuraldynamics,1991,20(4):355-370.
|
| [17] | zhoud,losh,auftk,etal.threedimensionalfreevibrationofthickcircularplatesonpasternakfoundation[j].journalofsoundandvibration,2006,292(3):726-741.
|
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