隧道-地震屏障-文物体系的减振探讨  

Discussion on Vibration Reduction of Tunnel-Seismic Barrier-Cultural Relics System

作　　者：杨之光 孙浩 刘宝作 高岩 阎广斌 吴红刚 YANG Zhiguang;SUN Hao;LIU Baozuo;GAO Yan;YAN Guangbin;WU Honggang

机构地区：[1]中铁九局集团有限公司大连分公司,辽宁大连116031 [2]中国五冶集团有限公司,四川成都610023 [3]中铁西北科学研究院有限公司,甘肃兰州730070

出　　处：《铁道技术监督》2023年第12期53-59,共7页Railway Quality Control

基　　金：中铁九局集团有限公司大连分公司科技开发项目(KJ-2021-02);中铁九局集团有限公司科技发展项目(DLF-ML-JSFW-2021-09)。

摘　　要：随着铁路隧道建设量逐渐增加,越来越多的隧道穿越文物保护区。我国近年地震频发,隧道近接文物保护区的减振问题应引起更多的关注。为了给隧道近接文物保护的抗震设计提供参考,针对填充沟加固的隧道近接文物保护区开展振动台试验,采集不同地震烈度下隧道近接文物保护区地基内各不同位置的加速度,通过快速傅里叶变换提取测点的频域响应曲线,分析隧道-地震屏障-文物体系的减振效果。提出在针对深埋隧道穿越文物保护区进行抗震设计时,就隧道近接文物保护区的特殊性而言,可以考虑用碎石填充沟对该区域进行减振处理。With the gradual increase of railway tunnel construction,more and more tunnels pass through the cultural relics reserve.In recent years,earthquakes have occurred frequently in China,and the vibration reduction problem of tunnels close to cultural relics reserves has not attracted more attention.In order to provide reference for the seismic design of the nearby cultural relics protection of the tunnel,shaking table tests were carried out on the nearby cultural relics protection area of the tunnel reinforced with filled ditches.The accelerations at different locations in the founda⁃tion of the nearby cultural relics protection area of the tunnel under different seismic intensities were collected.The frequency domain response curves of the measuring points were extracted through fast Fourier transform,and the vi⁃bration reduction effect of the tunnel⁃seismic barrier⁃cultural relics system was analyzed.It is proposed that when the deep buried tunnel passes through the cultural relics protection area for seismic design,considering the particularity of the tunnel close to the cultural relics protection area,the gravel filled ditch can be considered to reduce the vibra⁃tion in this area.

关 键 词：铁路隧道 文物保护区 地震波 振动台试验 功率谱 能量谱 

分 类 号：U252.28[交通运输工程—道路与铁道工程]