摘要
随着中国高速铁路建设的快速发展,移动荷载下路基振动所带来的环境污染日益严重,轨道交通诱发的环境振动隔振已成为土动力学研究的热点之一。为缓解轨道交通诱发的振动污染问题,考虑车-轨道-土体动力相互作用,建立列车-轨道简化分析模型,采用三维半解析半理论边界元法,探究移动荷载下均质和Gibson地基中埋置Duxseal时的隔振效果进行分析并探讨不同Duxseal宽度、厚度及埋深对隔振效果的影响。研究结果表明:在一定范围内增加Duxseal宽度和厚度有助于提高隔振效果,较小的埋深对振动控制有利。Duxseal参数的设计要充分考虑成本和地基参数,地基类型对水平方向的隔振效果影响较小,竖向受土质参数的影响较大。
With the rapid development of high-speed railway construction in China,environmental pollution caused by subgrade vibration under moving loads has become serious increasingly.Environmental vibration isolation induced by rail transit has become one of the hot topics in soil dynamics research.In order to alleviate the vibration pollution problem induced by rail transit,a simplified train-track analysis model was established considering the train-track-soil dynamic interaction,and the three-dimensional semi-analytical and semi-theoretical boundary element method was used to explore the characteristics of homogeneous and Gibson foundations under the action of moving loads.The vibration isolation effect when Duxseal is embedded and the influence of different Duxseal width,thickness and burial depth on the vibration isolation effect is discussed.The results show that increasing the width and thickness of Duxseal within a certain range can help improve the vibration isolation effect,and a smaller burial depth is beneficial to vibration control.The design of Duxseal parameters must fully consider the cost and foundation parameters.The type of foundation has a small impact on the vibration isolation effect in the horizontal direction,while the vertical direction is greatly affected by soil parameters.
作者
赵礼治
高盟
张致松
ZHAO Lizhi;GAO Meng;ZHANG Zhisong(Shandong Province Key Laboratory of Civil Engineering&Disaster Prevention and Mitigation,Shandong University of Science and Technology,Qingdao 266590,China;Institute of Civil Engineering and Architecture,Shandong University of Science and Technology,Qingdao 266590,China)
出处
《地震工程与工程振动》
CSCD
北大核心
2023年第5期46-54,共9页
Earthquake Engineering and Engineering Dynamics
基金
山东省自然科学基金项目(ZR2021ME144)。
