摘要
高速铁路是各个国家竞相发展的关键交通基础设施,对经济发展和社会进步都具有重要意义。高速铁路有别于传统铁路的最大特点是列车运行速度高,从而对铁路路基的振动和沉降等提出严苛的控制要求,突破传统岩土工程理论和技术范畴,高速铁路路基动力学已经成为铁道工程、岩土工程、结构动力学等多学科交叉的国际前沿和研究热点。文中总结国内外对高速铁路路基动力学的研究进展,重点阐述列车荷载作用下路基动力响应的理论分析模型、路基内部动应力分布特征和随着列车运行速度提高的放大效应、列车运行引起路基循环累积沉降分析方法及控制和修复技术等三个方面,并提出高速铁路路基动力学发展的展望。
High-speed railway is the key transportation infrastructure developed by many countries worldwide, it has made impact to both economic development and social progress. The basic difference between high-speed railway and conventional railway is that the train operates at a high speed. As a result, strict limits are put forward to control railway track foundation＇s vibration as well as its settlement, which have exceeded traditional geotechnical theories and technologies, thus the high-speed railway track foundation dynamics becomes an interdisciplinary field of railway engineering, geotechnical engineering, structural dynamics, etc. and has become a cutting-edge and hot research topic in the world. This paper summarizes the domestic and overseas research progresses on the high-speed railway track foundation dynamics, focusing on the theoretical models of analyzing track foundation dynamic responses under train moving loads, the distribution of dynamic soil stress in the soils under track structure and its amplification effect as the train speed increases, prediction methods of track foundation accumulative settlement caused by train operations and its corresponding control and repair technologies. Finally, prospects are proposed on the developments of high-speed railway track foundation dynamics.
作者
陈云敏
边学成
Chen Yunmin;Bian Xuecheng(Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China;Key Laboratory of Soft Soils and Geoenvironmental Engineering of the Ministry of Education, Zhejiang University, Hangzhou 310058, China)
出处
《土木工程学报》
EI
CSCD
北大核心
2018年第6期1-13,共13页
China Civil Engineering Journal
基金
国家自然科学基金面上项目(51678524)
浙江大学基本科研业务费(2017XZZX003)
牛顿基金(Newton Advanced Fellowship NA140060)
浙江省杰出青年基金(LR16E080002)
关键词
高速铁路
路基动力学
振动
沉降
模型试验
high-speed railway
track foundation dynamics
vibration
settlement
model testing
