列车振动对黄土地铁隧道结构影响研究现状

Review of the Influence of Train-induced Vibratory Load on Metro Tunnel in Loess Area

近年来,我国黄土地区城市轨道交通系统发展迅猛,一系列黄土地区地铁隧道结构安全性评价相关问题日益凸显,亟待开展黄土地区地下隧道结构长期稳定性与安全性相关的问题研究。针对地铁长期运营振动引起的黄土地铁盾构隧道结构动力响应研究相对滞后的现实,特别是地铁列车振动荷载作用下盾构隧道结构的损伤特性和寿命预测研究严重不足的问题,总结了国内外重要研究成果,对地铁列车振动对黄土地区地铁盾构隧道结构影响的研究现状进行分析,主要包括地铁列车振动荷载研究列车振动荷载下黄土动力特性、隧道结构响应及隧道结构长期寿命研究等,分析了当前研究存在的问题,并进一步提出了解决问题的思路和想法。

In recent years,the metro transportation systems develop rapidly in the loess area cities in China,some of the new technology issues related to tunnel stability and structure safety assessment occur with the construction and operation of tunnel in loess layer,especially the long-term stability and safety of loess tunnel under the condition of continuous vibration induced by subway train. Aiming at the shortage of studies on metro tunnel lining dynamic response in loess layer,especially on the damage evolution in tunnel lining and lifetime prediction of metro tunnel,the recent advances on the study of the influence of train-induced vibratory load on tunnel are analyzed and summarized based on lots of literatures,including the feature of train-induced load and the dynamical properties of loess,the response of tunnel structure and the long-term life prediction of tunnel under train-induced load. Some issues on the subjects are analyzed,and the future research on the tunnel in loess is pointed out.