张呼铁路施工振动对长城文物影响研究
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摘要
近年来随着高速铁路的快速发展,铁路施工引起的振动问题越发凸显。如果不采取减缓措施,施工振动可能会对铁路周边文物产生损坏。依托张呼铁路下穿长城烽火台施工期间的振动监测,分析论证铁路施工期间的振动对临近文物的影响。针对张呼铁路大尖山一号隧道施工期间的振动速度和地面沉降量进行监测,结果表明:张呼铁路隧道爆破施工时,长城烽火台测点振动未超出振动允许速度限值;地表沉降主要集中在下台阶开挖施工过程中,隧道下穿烽火台时,隧道上方监测点位有0~7 mm左右的累计下沉变化量,下沉变化量满足地表总沉降变形控制标准。
In recent years,with the rapid development of high-speed railway,the vibration caused by railway construction has become increasingly prominent. If the mitigation measures are not taken,the construction vibration may damage the cultural relics around the railway. Relying on the vibration monitoring during the construction of Zhangjiakou-Hohhot railway crossing the Great Wall beacon tower,this paper analyzes and demonstrates the influence of the vibration during the railway construction on adjacent cultural relics.Monitoring the vibration speed and ground settlement of the No. 1 tunnel in Dajianshan of Zhangjiakou-Hohhot railway shows that the vibration of the measuring point of the Great Wall beacon tower does not exceed the allowable vibration speed limit during the blasting construction of Zhangjiakou-Hohhot railway tunnel. The ground subsidence is mainly concentrated in the excavation process of the lower step. When the tunnel goes through the beacon tower,the monitoring point above the tunnel has accumulated subsidence variation of about0 ~ 7 mm,and the subsidence variation meets the control standard of the total ground subsidence deformation.
In recent years,with the rapid development of high-speed railway,the vibration caused by railway construction has become increasingly prominent. If the mitigation measures are not taken,the construction vibration may damage the cultural relics around the railway. Relying on the vibration monitoring during the construction of Zhangjiakou-Hohhot railway crossing the Great Wall beacon tower,this paper analyzes and demonstrates the influence of the vibration during the railway construction on adjacent cultural relics.Monitoring the vibration speed and ground settlement of the No. 1 tunnel in Dajianshan of Zhangjiakou-Hohhot railway shows that the vibration of the measuring point of the Great Wall beacon tower does not exceed the allowable vibration speed limit during the blasting construction of Zhangjiakou-Hohhot railway tunnel. The ground subsidence is mainly concentrated in the excavation process of the lower step. When the tunnel goes through the beacon tower,the monitoring point above the tunnel has accumulated subsidence variation of about0 ~ 7 mm,and the subsidence variation meets the control standard of the total ground subsidence deformation.
引文
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[6]孟鑫,刘鹏辉,姚京川,等.重载铁路振动对沿线建筑物结构影响试验[J].噪声与振动控制,2015,35(2):101-106.
[7]孙涛,王宗鹏,高二鹏.铁路建设项目对典型环境敏感区的影响及减缓措施研究[J].铁路节能环保与安全卫生,2016,6(1):11-15.
[8]杨曦.某铁路建设项目跨越长城的影响分析与防护措施[J].铁路节能环保与安全卫生,2017,7(1):27-30.
[2]程伟,贺少辉,康富中.深埋多层大跨铁路车站施工对八达岭景区影响的数值分析[J].铁路建筑技术,2011(2):30-34.
[3]田苗,熊春梅,袁富琼,等.列车引起的环境振动问题研究[J].噪声与振动控制,2013,33(1):143-147.
[4]陈建国,于秀梅,魏显峰.轨道交通振动对环境影响的研究[J].铁道标准设计,2007(1):82-85.
[5]卢华喜,梁平英,徐晏平.高速列车引起建筑物振动的研究方法概述[J].噪声与振动控制,2010,30(4):50-53.
[6]孟鑫,刘鹏辉,姚京川,等.重载铁路振动对沿线建筑物结构影响试验[J].噪声与振动控制,2015,35(2):101-106.
[7]孙涛,王宗鹏,高二鹏.铁路建设项目对典型环境敏感区的影响及减缓措施研究[J].铁路节能环保与安全卫生,2016,6(1):11-15.
[8]杨曦.某铁路建设项目跨越长城的影响分析与防护措施[J].铁路节能环保与安全卫生,2017,7(1):27-30.