水泥土和CFG组合桩复合地基动力特性分析
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摘要
基于优化桩型的观点,将水泥土桩和CFG桩组合成复合桩,形成刚柔组合桩复合地基,既发挥了柔性桩、刚性桩的优点又弥补了各自的不足。本文采用ANSYS有限元分析软件,对刚柔组合桩复合地基复合地基的动力特性、在地震作用下位移和加速度时程曲线进行了分析,并对刚柔组合桩复合地基抗震动力特性进行了评价,刚柔组合桩的植入较好地改善了天然地基承载和变形特性,有利于地基抗震。
Based on the view of pile optimization,soil-cement piles and CFG piles are made into composite piles,and form composite foundation with rigid piles and flexible Piles,which utilizes fully flexible piles and rigid piles advantages and also make up their own deficiencies.By ANSYS FEM analysis software,Dynamic characteristic of Composite foundation with flexible piles and rigid piles and Dynamic reaction acted on the seismic action are analysed.Implantation of flexible piles and rigid pile improves the load bearing and deformation characteristics of nature foundation,which is effective on elevating the earthquake resistance of foundation.
Based on the view of pile optimization,soil-cement piles and CFG piles are made into composite piles,and form composite foundation with rigid piles and flexible Piles,which utilizes fully flexible piles and rigid piles advantages and also make up their own deficiencies.By ANSYS FEM analysis software,Dynamic characteristic of Composite foundation with flexible piles and rigid piles and Dynamic reaction acted on the seismic action are analysed.Implantation of flexible piles and rigid pile improves the load bearing and deformation characteristics of nature foundation,which is effective on elevating the earthquake resistance of foundation.
引文
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[2]王伟等.水泥粉煤灰碎石桩复合地基抗震性能分析[J].世界地震工程.2000,16(2):97~100.(Wang Wei,Yang Yao-zhi.Seis-mic behavior analysis of composite ground of cement fly-ash gravel pile[J].Earthquake Engineering and Engineering Vibration,2000,16(2):97~100.(in Chinese))
[3]陈国兴.岩土地震工程学[M].科学出版社.2007,5.
[4]宋二祥.无限地基数值模拟的传输边界[J].工程力学,1997:613~619.
[5]Castellani A,Chesi C,Parisi MA.Boundary conditions for finite ele-ment analyses in time domain[J].Soil Dynamics&Earthquake En-gineering.1982,(1):193~207.
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