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接触对桩-土-结构动力相互作用体系的影响

, PP. 176-181

Keywords: 桩-土-结构相互作用,动力接触,地震反应,二维有限元

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Abstract:

为了考察桩-土接触效应对结构地震反应的影响,利用有限元软件ABAQUS建立了土-桩-框架二维有限元模型,分别采用损伤塑性模型和动力粘塑性记忆型嵌套面模型模拟混凝土和土体,利用rebar单元模拟混凝土内的钢筋,取得了较好的计算效果。计算分析中采用19条不同频谱的地震波记录,考虑了地震动强度、桩径、摩擦系数等因素,以层间位移角和桩顶最大位移为主要评价指标,揭示相互作用体系的动力响应特性。分析认为,计算结果对桩、土摩擦系数的取值不敏感;不考虑土-桩接触时,近场土体的动力反应与实际情况存在一定的误差,且上部结构和桩基的动力反应会被低估,应该考虑桩-土动力接触效应;地震动强度增加时,随着结构进入塑性状态,低估程度减小;桩径增加时,低估程度没有显著变化,虽然桩基和上部结构的反应都有所减小。

References

[1]  Uno K.Analytical method,modeling and boundary condition for the response analysis of nonlinear soil-structure-interaction[C] //The 14th World Conference on Earthquake Engineering.Beijing,2008:12-17
[2]  庄海洋,陈国兴,朱定华.土体动力粘塑性记忆型嵌套面本构模型及其验证[J].岩土工程学报,2006,28 (010):1267-1272.
[3]  Kimura M,Zhang F.Seismic evaluations of pile foundations with three differen tmethods based on three-dimensional elasto-plasticfinite element analysis[J].Journal of the Japanese Geotechnical Society of Soils and Foundations,2000,40(5):113-132.
[4]  陈国兴,谢君斐.土与结构材料界面性状的研究概况[J].世界地震工程,1994,(4):1-9.
[5]  Kanto Y,Yagawa G.Adynamic contact buckling an alysis by the penalty finite element method[J].International Journal for Numerical Methods in Engineering,1990,29(4):755-774.
[6]  张雄,王天舒.计算动力学[M].北京:清华大学出版社,2007:301-317.
[7]  Hibbitt K,Soren son.IABAQUS Analysis Users Manual,verion 6.8[M].Providence Rhode Island,USA:Abaqus Inc,2005.
[8]  Itasca.FLAC user’s manual,version 5.0[M].Minneapolis,Minnesota,USA:Itasca Consulting Group Inc,2005.
[9]  Ghalibafian H.Evaluation of the effects of nonlin earsoil-structure interaction on the inelastic seismic response of pile-supported bridge piers[D].BC,Canada:The University of British Columbia,2006.
[10]  Donovan K,Pariseau W,Cepak M.Finite element approach to cable bolting in steeply dipping VCR slopes,in Geom echanics Applications in Underground Hard rock Mining[M].New York:Society of Mining Engineers,1984:65-90.
[11]  楼梦麟,王文剑,朱 彤,等.土-结构体系振动台模型试验中土层边界影响问题[J].地震工程与工程振动,2000,20(04):30-36.
[12]  Medina R,Krawinkler H,Krawink ler H.Seismic demands for nondeteriorating frame structures and their dependence on ground motions.John A.Blume Earthquake Engineering Center Report No.144[D].Stanford,CA ,USA:Stanford University,2003.
[13]  Bradley B A,Cubrinovski M,Dhakal R P,et al.Intensitym easures for the seismic response of pile foundations[J].Soil Dynamics and Earthquake Engin eering,2009,29 (6):1046-1058.
[14]  李怡闻,周健.土-结构动力相互作用分析打桩引起相邻隧道振动[J].岩土工程学报,2007,29 (001):60-65.
[15]  张峰.计算土力学[M].北京:人民交通出版社,2007:173-174.

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