锤击桩纵向振动半解析解
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摘要
建立了成层土中桩的受力模型,利用桩与土的相互作用,在Laplace变换和矩阵理论的基础上推导了桩顶在任意荷载作用下,桩的纵向振动半解析解。在把外部载荷简化为半正弦波载荷的情况下,利用该方法计算了桩中不同点处的位移响应,并将计算结果与实测结果进行了比较,从而证明了该方法的可行性。
The mechanic model of pile in layered soils was established in the text.By taking advantage of the interaction between pile and soil,the semi-analytical solution of vertical vibration on pile was derived under any load on the top of pile on the base of Laplace transform and matrix theory.Under the condition of simplifying external load as semi-sine impulse exciting,the displacements response of various dot in the pile was calculated.The feasibility of this mothed was assured by comparing the theoretical analysis and field test data.
The mechanic model of pile in layered soils was established in the text.By taking advantage of the interaction between pile and soil,the semi-analytical solution of vertical vibration on pile was derived under any load on the top of pile on the base of Laplace transform and matrix theory.Under the condition of simplifying external load as semi-sine impulse exciting,the displacements response of various dot in the pile was calculated.The feasibility of this mothed was assured by comparing the theoretical analysis and field test data.
引文
[1]赵振东,杉本三千雄,铃木善雄.桩基低应变完整性检测的分析研究[J].地震工程与工程振动,1995,15(4):104-112.
[2]陆培毅,李忠献,顾晓鲁.低应变测桩承载力的理论及应用[J].地震工程与工程振动,1998,18(2):134-139.
[3]张莹,李增选,祝龙根.桩基完整性动力检测的定量分析[J].同济大学学报,1998,26(6):650-653.
[4]王奎华,谢康和,曾国熙.有限长桩受迫振动问题解析解及其应用[J].岩土工程学报,1997,19(2):27-35.
[5]王腾,王奎华,谢康和.成层土中桩的纵向振动理论研究及应用[J].土木工程学报,2002,35(1):83-87.
[6]王宏志,陈云敏,陈仁朋.多层土中桩的振动半解析解[J].振动工程学报,2000,13(4):660-665.
[7]Rausche F.Stress Wave Measuring in Practice[A].The Second International Conference on the Application of Stress-waveTheory on Piles[C].Stockholm:[s.n.],1984.1-23.
[8]Novak M,Nogami T,Aboul-Ella F.Dynamic Soil Reaction for Plane Strain Case[J].Journal of Engineering Mechanics Divi-sion,ASCE,1978,104(4):953-959.
[9]Lysmer J,Richart F E.Dynamic Response of Footing to Vertical Load[J].Journal of Soil Mechanics and Foundation Division,ASCE,1966,2(1):65-91.
[2]陆培毅,李忠献,顾晓鲁.低应变测桩承载力的理论及应用[J].地震工程与工程振动,1998,18(2):134-139.
[3]张莹,李增选,祝龙根.桩基完整性动力检测的定量分析[J].同济大学学报,1998,26(6):650-653.
[4]王奎华,谢康和,曾国熙.有限长桩受迫振动问题解析解及其应用[J].岩土工程学报,1997,19(2):27-35.
[5]王腾,王奎华,谢康和.成层土中桩的纵向振动理论研究及应用[J].土木工程学报,2002,35(1):83-87.
[6]王宏志,陈云敏,陈仁朋.多层土中桩的振动半解析解[J].振动工程学报,2000,13(4):660-665.
[7]Rausche F.Stress Wave Measuring in Practice[A].The Second International Conference on the Application of Stress-waveTheory on Piles[C].Stockholm:[s.n.],1984.1-23.
[8]Novak M,Nogami T,Aboul-Ella F.Dynamic Soil Reaction for Plane Strain Case[J].Journal of Engineering Mechanics Divi-sion,ASCE,1978,104(4):953-959.
[9]Lysmer J,Richart F E.Dynamic Response of Footing to Vertical Load[J].Journal of Soil Mechanics and Foundation Division,ASCE,1966,2(1):65-91.
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