Propagation and attenuation characteristics of the vibration in soft soil foundations induced by high-speed trains
Propagation and attenuation characteristics of the vibration in soft soil foundations induced by high-speed trains
复制标题
高速列车诱发软土地基振动的传播与衰减特性
DOI：
10.1016/j.soildyn.2018.11.004
复制
发表时间：
2019-02
影响因子：
4
通讯作者：
Yang Jiachuan
中科院分区：
文献类型：
--
作者：
Ren Xingwei;Wu Junfeng;Tang Yiqun;Yang Jiachuan
高速列车引起的振动会导致铁路地基强度和承载力降低、意外沉降等岩土工程问题。因此，有必要估计在不同深度的基础的振动水平。研究了高速列车振动在软土地基中的传播和衰减特性。通过一系列的现场试验，对上海软土地基中的高速列车振动进行了测量。测量为数值模型验证提供了唯一的数据集。基于Bornitz方程，提出了一种新的层状均匀介质衰减模型。材料阻尼系数和几何阻尼系数，模型的两个输入参数，在这项研究中，从现有的文献中使用的测量进行了深入研究。将该模型应用于软土地区典型高速公路路基和地基不同深度处的竖向振动水平估算。模型的性能是由预测和观察之间的良好协议的支持。我们的模型提供了一个替代工具，以进一步研究的影响，高速列车引起的振动的基础土壤和邻近的地下结构。
The vibration caused by high-speed trains (HSTs) can result in reductions of strength and bearing capacity of the railway foundation, unexpected settlement, and other geotechnical engineering problems. Thus it is essential to estimate the vibration level at different depths of the foundation. This study investigates the propagation and attenuation characteristics of the vibration in the soft soil foundation induced by high-speed trains. A series of field experiments were conducted to measure the HST-induced vibration in the soft soil foundation in Shanghai, China. The measurement provides a unique dataset for numerical model validations. Based on the Bornitz equation, a new attenuation model is proposed for layered homogeneous media. The material damping coefficient and the geometric damping coefficient, two input parameters for the model, are thoroughly investigated using measurements in this study and from the existing literature. The proposed model was applied to estimate the vertical vibration levels at different depths in typical subgrade and foundation of HSTs in the soft area. Model performance is supported by the good agreement between predictions and observations. Our model provides an alternative tool to further investigate the effect of HST-induced vibration on foundation soils and adjacent underground structures.
登录
查看更多内容
影响因子：
3.6
作者：
C. Ng;Guo-bin Liu;Qing Li
通讯作者：
C. Ng;Guo-bin Liu;Qing Li
地铁振动荷载作用下饱和软土动力响应研究Ⅰ：瞬时动力响应
DOI：
10.1007/s12665-011-1000-5
发表时间：
2011-03
期刊：
Environ Earth Sci
影响因子：
--
作者：
唐益群
通讯作者：
唐益群
影响因子：
2.2
作者：
S. Hesami;Saeed Ahmadi;A. T. Ghalesari
通讯作者：
S. Hesami;Saeed Ahmadi;A. T. Ghalesari
影响因子：
--
作者：
Cui Yonggao
通讯作者：
Cui Yonggao
DOI：
--
发表时间：
1994
期刊：
--
影响因子：
--
作者：
J. Wolf
通讯作者：
J. Wolf