Three-dimensional analysis of the screening effectiveness of hollow pile barriers for foundation-induced vertical vibration
Three-dimensional analysis of the screening effectiveness of hollow pile barriers for foundation-induced vertical vibration
复制标题
DOI：
10.1016/j.compgeo.2007.05.010
复制
发表时间：
2008-05
影响因子：
5.3
通讯作者：
P. Tsai;Zheng-Yi Feng;Tin-lon Jen
中科院分区：
文献类型：
--
作者：
P. Tsai;Zheng-Yi Feng;Tin-lon Jen
应用频域三维边界元方法，研究了无质量正方形地基在简谐竖向荷载作用下，连续圆形桩的屏蔽效果。研究了四种桩型：钢管桩、混凝土空心桩、混凝土实心桩和木桩。通过参数研究考察了桩尺寸、工作频率和震源距离对筛选效果的影响。结果表明，钢管桩的屏蔽效果一般好于实心桩，混凝土空心桩的挡墙可能因其刚性而失效。桩长对筛分效果的影响比桩间距和桩基距桩障距离的影响更大。
The study applies the three-dimensional boundary element method in frequency domain to investigate the screening effectiveness of circular piles in a row for a massless square foundation subject to harmonic vertical loading. Four types of piles were studied: steel pipe piles, concrete hollow piles, concrete solid piles and timber piles. A parametric study was undertaken to examine the effects of pile dimensions, operational frequency, and source distance on the screening effectiveness. The results showed that screening effectiveness of steel pipe piles is generally better than that of solid piles, and that a concrete hollow pile barrier can be ineffective due to its stiffness. The influence of pile length on screening effectiveness is more significant than that of pile spacing and the distance between the vibrating foundation and the pile barrier.