城市地铁运行对博物馆振动影响分析

Analysis of influence of urban subway operation on museum vibration

以石家庄市地铁1号线运行对与其直线距离约50 m的河北省博物馆产生振动影响为背景,按照强震动台站相关规范要求进行现场观测,获取2021年8月4日0-24时完整观测数据,分析发现:EW向最大加速度峰值为10.57 Gal,出现在08:07;NS向最大加速度峰值为6.50 Gal,出现在20:58;UD向最大加速度峰值为7.80 Gal,出现在07:28。参照相关振动标准值,结合《中国地震烈度表》(GB/T 17742-2020),得出该地铁线路运行期间对河北省博物馆的振动影响烈度为Ⅱ度(2度)-Ⅲ度(3度),非运行期间振动现状值均低于振动标准值,无影响烈度。研究结果可为河北省博物馆文物的长期保护提供重要参考。

Based on the vibration effect of the operation of Shijiazhuang Metro Line 1 on the Hebei Provincial Museum,which is about 50 m away from it,on-site observations were made following the relevant specifications of strong vibration stations,and the complete observation data from 0 to 24:00 on August 4,2021,was obtained.The data analysis and processing found that the maximum acceleration peak value in the EW direction was 10.57 Gal,which appeared at 08:07;the maximum acceleration peak value in the NS direction was 6.50 Gal,which appeared at 20:58;the maximum acceleration peak value in the UD direction was 7.80 Gal,which appeared at 07:28.Referring to the relevant vibration standard values,combined with the“China Earthquake Intensity Scale”(GB/T 17742-2020),it is concluded that the impact intensity of Shijiazhuang Metro Line 1 on Hebei Provincial Museum during the operation period isⅡdegree(2 degree)-Ⅲdegree(3 degree),the current value of vibration during non-operation period is lower than the standard value of vibration,and there is no impact intensity,which provides an important reference for the long-term protection of museum relics in Hebei Province.