基于时程分析法的刚性桩复合地基地震响应分析
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摘要
针对5×5刚性桩复合地基三维群桩,利用有限元分析软件ANSYS软件进行了动力特性分析,计算模型中,桩体、桩间土、基础和褥垫层均假定为线弹性模型,并考虑上部结构的反馈作用。通过数值计算研究了结构自振特性,采用时程分析法对刚性桩复合地基进行了地震响应分析,研究了复合地基-基础-上部结构三者在不同地震作用下,其结构的位移、内力的数值大小及分布规律,对抗震设计具有参考价值。
For 5 × 5 three-dimensional composite foundation pile group,using the finite element analysis software ANSYS for the analysis of dynamic characteristics,in the calculation model,the pile,soil between piles,foundation and cushion are assumed to be linear elastic models,and the feedback effect of the upper structure is also considered.Numerical simulation is employed to study the structural vibration characteristics.The time history analysis method is used to analyze the earthquake response of composite foundation.The magnitude of displacement and internal forces and distribution of the composite foundation-foundation-superstructure under different seismic excitations are studied.It may provide reference for seismic design of structures.
For 5 × 5 three-dimensional composite foundation pile group,using the finite element analysis software ANSYS for the analysis of dynamic characteristics,in the calculation model,the pile,soil between piles,foundation and cushion are assumed to be linear elastic models,and the feedback effect of the upper structure is also considered.Numerical simulation is employed to study the structural vibration characteristics.The time history analysis method is used to analyze the earthquake response of composite foundation.The magnitude of displacement and internal forces and distribution of the composite foundation-foundation-superstructure under different seismic excitations are studied.It may provide reference for seismic design of structures.
引文
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[3]盛桂林.劲性搅拌桩复合地基性状研究[D].开封:河南大学,2005.(SHENG Gui-lin.A study of compound foundationcharacteristic of reinforced mixing pile[D].Kaifeng:HenanUniversity,2005.(in Chinese))
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[5]鲍科峰,姜忻良,盛桂林.劲性搅拌桩复合地基承载性能静动力分析[J].岩土力学,2007,28(1):63–68.(BAO Peng,JIANG Xin-liang,SHENG Gui-lin.Static and dynamicanalysis of bearing capacity of composite foundation ofconcrete core mixing piles[J].Rock and Soil Mechanics,2007,28(1):63–68.(in Chinese))
[6]ANDSON D L,UNGLNESS R L.Infinite element int symp oninnovative numerical analysis in applie engineeringscience[R].France,1997.
[7]鲍科峰.正交空腹网壳结构的静、动力性能研究[D].杭州:浙江大学,2004.(BAO Ke-feng.Study on static and dynamicperformance of orthogonal vierendeel latticed shells[D].Hangzhou:Zhejiang University,2004.(in Chinese))
[8]张波,盛和太.ANSYS有限元数值分析原理与工程应用[M].北京:清华大学出版社,2005.(ZHANG Bo,SHENGHe-tai.ANSYS finite element numerical analysis theory andengineering application[M].Beijing:Tsinghua UniversityPress,2005.(in Chinese))
[2]赵捷.刚性桩复合地基三维数值分析与模型试验研究[D].开封:河南大学,2007.(ZHAO Jie.Three-dimensionednumerical analysis of rigid pile composite foundation andmodal experimental study[D].Kaifeng:Henan University,2007.(in Chinese))
[3]盛桂林.劲性搅拌桩复合地基性状研究[D].开封:河南大学,2005.(SHENG Gui-lin.A study of compound foundationcharacteristic of reinforced mixing pile[D].Kaifeng:HenanUniversity,2005.(in Chinese))
[4]胡再强,王军量,刘兰兰,等.褥垫层作用下复合地基抗震性能有限元分析[J].岩土力学,2008(增刊):587–592.(HUZai-qiang,WANG Jun-liang,LIU Lan-lan,et al.Finiteelement analysis of seismic behaviors of compositefoundation with bedding cushion[J].Rock and SoilMechanics,2008(S0):587–592.(in Chinese))
[5]鲍科峰,姜忻良,盛桂林.劲性搅拌桩复合地基承载性能静动力分析[J].岩土力学,2007,28(1):63–68.(BAO Peng,JIANG Xin-liang,SHENG Gui-lin.Static and dynamicanalysis of bearing capacity of composite foundation ofconcrete core mixing piles[J].Rock and Soil Mechanics,2007,28(1):63–68.(in Chinese))
[6]ANDSON D L,UNGLNESS R L.Infinite element int symp oninnovative numerical analysis in applie engineeringscience[R].France,1997.
[7]鲍科峰.正交空腹网壳结构的静、动力性能研究[D].杭州:浙江大学,2004.(BAO Ke-feng.Study on static and dynamicperformance of orthogonal vierendeel latticed shells[D].Hangzhou:Zhejiang University,2004.(in Chinese))
[8]张波,盛和太.ANSYS有限元数值分析原理与工程应用[M].北京:清华大学出版社,2005.(ZHANG Bo,SHENGHe-tai.ANSYS finite element numerical analysis theory andengineering application[M].Beijing:Tsinghua UniversityPress,2005.(in Chinese))
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