应用无限地基方法研究打桩振动对海堤的影响
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摘要
采用阻尼抽取法研究了无限地基法结构动力相互作用并分析打桩对海堤的影响。在原方法的基础上,本文提出采用较小的有限区域并在界面处附加弹簧和阻尼的方式来考虑无限地基法的影响。随后给出了适合于打桩激励参数的确定方法。最后,采用本文方法进行了工程实例计算,结果表明,本文方法实用可靠,不仅可以提高动力仿真的精度,而且可以降低计算量。
Based on the damping-solvent extraction methed,smaller finite zone combined with spring and damper elements on the interface is adopted to simulate the effect of infinite ground,and to determine the suitable parameters for pile driving vibration.This modified method remarkably saves the calculation time and improves the accuracy of the dynamic simulation of pile driving vibration.An example of engineering practice is given.
Based on the damping-solvent extraction methed,smaller finite zone combined with spring and damper elements on the interface is adopted to simulate the effect of infinite ground,and to determine the suitable parameters for pile driving vibration.This modified method remarkably saves the calculation time and improves the accuracy of the dynamic simulation of pile driving vibration.An example of engineering practice is given.
引文
［1］ 陈云敏,凌道盛,周承涛.打桩振动近场波动的数值分析和实测比较［J］.振动工程学报,2002,15（2）：178-184 .
［2］Boominathan A,Ayothiraman R.An experimental study on static and dynamic bending behavior of piles in soft clay［J］.Geotechnical and Geological Engineering,2007,25（2）: 177-189 .
［3］ 李昕,周晶,陈健云.考虑土体非线性特性的直埋管道土体系统的动力反应分析［J］.计算力学学报,2001,18（2）： 167-172 .
［4］ 陈云敏,陈仁朋,朱斌.打桩过程中桩的横向振动分析［J］.振动工程学报,2001,14（2）： 215-219 .
［5］ Hajialilue B S,Chazelas J L,Levacher D.Procedures used for dynamically laterally loaded pile tests in a centrifuge［J］.Geotechnical Testing Journal,2007,30（1）: 60-68 .
［6］ Cubrinovski M,Uzuoka R,Tokimatsu.Prediction of pile response to lateral spreading by 3-D soil-water coupled dynamic analysis: Shaking in the direction of ground flow［J］.Soil Dynamics and Earthquake Engineering,2008，28（6）: 421-435 .
［7］ Peter J A,Lakshmanan N,Manoharan P D.A full scale evaluation of the dynamic behavior of self-compacting concrete under-reamed piles［J］.Journal of Structural Engineering,2006,33（1）: 91-99 .
［8］ 陈健云,李建波,林皋,等.结构地基动力相互作用时域数值分析的显隐式分区异步长递归算法［J］.岩石力学与工程学报,2007,26（12）： 2481-2487 .
［9］ 李建波,陈健云,林皋.无限地基结构动力相互作用分析的分区递归时域算法研究［J］.工程力学,2005，22（3）： 88-96 .
［10］ Masoumi H R,Degrande G,Lombaer T.Prediction of free field vibrations due to pile driving using a dynamic soil-structure interaction formulation［J］.Soil Dynamics and Earthquake Engineering,2007,27（2）: 126-143 .
［11］ 顾淦臣.土石坝地震工程［M.南京：河海大学出版社,1988 .
［2］Boominathan A,Ayothiraman R.An experimental study on static and dynamic bending behavior of piles in soft clay［J］.Geotechnical and Geological Engineering,2007,25（2）: 177-189 .
［3］ 李昕,周晶,陈健云.考虑土体非线性特性的直埋管道土体系统的动力反应分析［J］.计算力学学报,2001,18（2）： 167-172 .
［4］ 陈云敏,陈仁朋,朱斌.打桩过程中桩的横向振动分析［J］.振动工程学报,2001,14（2）： 215-219 .
［5］ Hajialilue B S,Chazelas J L,Levacher D.Procedures used for dynamically laterally loaded pile tests in a centrifuge［J］.Geotechnical Testing Journal,2007,30（1）: 60-68 .
［6］ Cubrinovski M,Uzuoka R,Tokimatsu.Prediction of pile response to lateral spreading by 3-D soil-water coupled dynamic analysis: Shaking in the direction of ground flow［J］.Soil Dynamics and Earthquake Engineering,2008，28（6）: 421-435 .
［7］ Peter J A,Lakshmanan N,Manoharan P D.A full scale evaluation of the dynamic behavior of self-compacting concrete under-reamed piles［J］.Journal of Structural Engineering,2006,33（1）: 91-99 .
［8］ 陈健云,李建波,林皋,等.结构地基动力相互作用时域数值分析的显隐式分区异步长递归算法［J］.岩石力学与工程学报,2007,26（12）： 2481-2487 .
［9］ 李建波,陈健云,林皋.无限地基结构动力相互作用分析的分区递归时域算法研究［J］.工程力学,2005，22（3）： 88-96 .
［10］ Masoumi H R,Degrande G,Lombaer T.Prediction of free field vibrations due to pile driving using a dynamic soil-structure interaction formulation［J］.Soil Dynamics and Earthquake Engineering,2007,27（2）: 126-143 .
［11］ 顾淦臣.土石坝地震工程［M.南京：河海大学出版社,1988 .
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