摘要
将Timoshenko梁模型引入到弹性地基梁中,土体对桩的作用用连续分布的弹簧来模拟,基于回传射线矩阵法,研究了桩顶受到横向冲击荷载作用下有限长桩的横向瞬态波动.经参数分析表明:土体刚度比对上软下硬、上硬下软两层地基中的有限长桩剪力波和弯矩波影响很大;从挠曲波曲线中难以辨别有无软硬夹层.
The Timoshenko beam resting on an elastic foundation is introduced to model a pile in a layered soil. The action of soil to pile is simulated by means of continuous distribution springs. Based on the reverberationray matrix, the flexural wave of finite pile caused by lateral impact load at the pile head is studied. Parametric analysis shows that the soil stiffness ratio has great effect on the moment wave and shear force wave of the finite pile in an upper-soft-and-lower-hard or upper-hard-and-lower-soft two-layered soil. Both the soft-sandwich soil and the hard-sandwich soil can result in the same flexural wave.
出处
《固体力学学报》
CAS
CSCD
北大核心
2005年第4期429-433,共5页
Chinese Journal of Solid Mechanics
基金
兰州交通大学"青蓝"人才工程基金(QL0507A)资助
