列车运行引起的地面振动衰减分析
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摘要
针对现有理论方法不能预测远距离地面振动的不足,对《动力机器基础设计规范》的地面振动衰减公式的参数进行适当调整,使其可用于预测铁路产生的地面振动衰减.计算了距铁路轨道中心50,100,200,400,500和1 000 m等不同测点处的地面振动,并与实测资料作了对比分析;首次预测并对比分析了列车运行引起的1 000 m远距离处地面振动传播与衰减.分析结果表明:调整后的《动力机器基础设计规范》公式可以预测铁路引起的远距离地面振动;由于实测加速度对比资料较少,因此,目前该公式仅推荐计算铁路的地面振动位移幅值和速度幅值.
The existing theory can not predict the long-range responses of the ground vibration,so an empirical formula is presented by adjusting the parameters in the attenuation formula in order to predict the ground vibration in the far field generated by a moving train.The formula is used to predict the ground vibrations at the distances of 50,100,200,400,500,and 1 000 m to the track center in the first time.The calculated ground vibration displacements are also compared with the measured ones.The results indicated that the formula can well predicted the propagation and attenuation of ground vibration responses generated by the moving trains.However,due to the lack of the measured vibration acceleration,the formula is only recommended to predict the vibration velocity and displacement of ground.
The existing theory can not predict the long-range responses of the ground vibration,so an empirical formula is presented by adjusting the parameters in the attenuation formula in order to predict the ground vibration in the far field generated by a moving train.The formula is used to predict the ground vibrations at the distances of 50,100,200,400,500,and 1 000 m to the track center in the first time.The calculated ground vibration displacements are also compared with the measured ones.The results indicated that the formula can well predicted the propagation and attenuation of ground vibration responses generated by the moving trains.However,due to the lack of the measured vibration acceleration,the formula is only recommended to predict the vibration velocity and displacement of ground.
引文
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[7]李志毅,分层及饱和分层地基列车运行引起的地面振动特性分析[D].上海:同济大学,2006.(Li Zhi-yi.Analysis of ground vibration generated by trains onlayered and saturated layered ground[D].Shanghai:Tongji University,2006.(in Chinese))
[8]石橋敏久,八幡夏?子.電車走行による地盘及び地盘一基础へ振動の传播性状:(その4)既存建物による測定結果とその解析[A].鹿島技術研究所年报[C].東京:鹿島建設技術研究所出版部,2001:317-318.(ISHIBASHI Toshihisa,YAHATA Kaeko.Propa-gation characteristics of ground-foundation by train vi-bration:Part 4.measurement results on a 6-story RCbuilding site and analytical study[A].Annual Report ofKajima Institute of Construction Technical Research In-stitute[C].Tokyo:Kajima Institute of ConstructionTechnology Press,2001:317-318.(in Japanese))
[9]茅玉泉.地面振动传播衰减研究的概括和发展[A].第一届全国建筑振动学术交流会论文集[C].北京:中国建筑工业出版社,1995:352-362.(MAO Yu-quan.Proceeding of general and development of prop-agation and attenuation study of ground vibration[A].First National Academic Exchange Building Vi-bration Symposium[C].Beijing:China Building In-dustry Press,1995:352-362.(in Chinese))
[10]中国地震局.地震及前兆数字观测技术规范之地震观测[M].北京:地震出版社,2001.(China Earth-quake Administration.Earthquake and precursorydigital technical specifications of seismic observation[M].Beijing:Earthquake Press,2001.(in Chinese))
[11]夏禾,张楠,曹艳梅.列车对周围地面及建筑物振动影响的试验研究[J].铁道学报,2004,26(4):93-98.(XIA He,ZHANG Nan,CAO Yan-mei.Experi-mental study of train induced vibrations of groundand nearby buildings[J].Journal of China RailwaySociety,2004,26(4):93-98.(in Chinese))
[12]高广运,李志毅,冯世进,等.秦-沈高速列车运行引起的地面振动实测与分析[J].岩土力学,2007,28(9):1817-1822.(GAO Guang-yun,LI Zhi-yi,FENG Shi-jin,et al.Experimental results and numericalpredictions of ground vibration induced by high-speedtrain running on Qin-Shen Railway[J].Rock and SoilMechanics,2007,28(9):1817-1822.(in Chinese))
[13]杨先健.工业环境振动与文物故迹防振规范——铁路、道路引起的地面振动计算分析报告[R].机械工业部第四设计研究院,2004.(YANG Xian-jian.In-dustrial environmental vibration and vibration specifica-tion——ground vibration calculation and analysis re-port caused by railways and roads[R].The Fourth Ma-chine Industry Design and Research Institute,Ministryof Machine-Building Industry,2004.(in Chinese))
[2]Woods R D,Barnet N E,Sangesser R.Holography,anew tool for soil dynamics[J].Journal of Geotechni-cal Engineering Division,ASCE,1974,100(11):1234-1247.
[3]中国船舶工业总公司第九设计研究院.隔振设计手册[M].北京:中国建筑工业出版社,1986.(The NinethDesign and Research Institute,China Shipbuilding Indus-try Corporation.Isolation design manual[M].Beijing:China Building Industry Press,1986.(in Chinese))
[4]中华人民共和国机械工业部.动力机器基础设计规范(GB50040-96)[S].北京:中国计划出版社,1996.(Ministry of Machine-Building Industry,People s Re-public of China.Code for design of dynamic machinefoundation(GB50040-96)[S].Beijing:China Plan-ning Press,1996.(in Chinese))
[5]杨先键.人为地面振动的传播与衰减[A].首届环境岩土工程学术交流会论文集[C].上海:同济大学出版社,2002:35-41.(YANG Xian-jian.Man-madeground vibration propagation and attenuation[A].Proceeding of the first Environmental GeotechnologySymposium[C].Shanghai:Tongji University Press,2002:35-41.(in Chinese))
[6]茅玉泉.交通运输车辆引起的地面振动特性和衰减[J].建筑结构学报,1987(1):67-77.(MAO Yu-quan.Characteristics and attenuation of ground vi-bration caused by traffic vehicle[J].Journal of Build-ing Structures,1987(1):67-77.(in Chinese))
[7]李志毅,分层及饱和分层地基列车运行引起的地面振动特性分析[D].上海:同济大学,2006.(Li Zhi-yi.Analysis of ground vibration generated by trains onlayered and saturated layered ground[D].Shanghai:Tongji University,2006.(in Chinese))
[8]石橋敏久,八幡夏?子.電車走行による地盘及び地盘一基础へ振動の传播性状:(その4)既存建物による測定結果とその解析[A].鹿島技術研究所年报[C].東京:鹿島建設技術研究所出版部,2001:317-318.(ISHIBASHI Toshihisa,YAHATA Kaeko.Propa-gation characteristics of ground-foundation by train vi-bration:Part 4.measurement results on a 6-story RCbuilding site and analytical study[A].Annual Report ofKajima Institute of Construction Technical Research In-stitute[C].Tokyo:Kajima Institute of ConstructionTechnology Press,2001:317-318.(in Japanese))
[9]茅玉泉.地面振动传播衰减研究的概括和发展[A].第一届全国建筑振动学术交流会论文集[C].北京:中国建筑工业出版社,1995:352-362.(MAO Yu-quan.Proceeding of general and development of prop-agation and attenuation study of ground vibration[A].First National Academic Exchange Building Vi-bration Symposium[C].Beijing:China Building In-dustry Press,1995:352-362.(in Chinese))
[10]中国地震局.地震及前兆数字观测技术规范之地震观测[M].北京:地震出版社,2001.(China Earth-quake Administration.Earthquake and precursorydigital technical specifications of seismic observation[M].Beijing:Earthquake Press,2001.(in Chinese))
[11]夏禾,张楠,曹艳梅.列车对周围地面及建筑物振动影响的试验研究[J].铁道学报,2004,26(4):93-98.(XIA He,ZHANG Nan,CAO Yan-mei.Experi-mental study of train induced vibrations of groundand nearby buildings[J].Journal of China RailwaySociety,2004,26(4):93-98.(in Chinese))
[12]高广运,李志毅,冯世进,等.秦-沈高速列车运行引起的地面振动实测与分析[J].岩土力学,2007,28(9):1817-1822.(GAO Guang-yun,LI Zhi-yi,FENG Shi-jin,et al.Experimental results and numericalpredictions of ground vibration induced by high-speedtrain running on Qin-Shen Railway[J].Rock and SoilMechanics,2007,28(9):1817-1822.(in Chinese))
[13]杨先健.工业环境振动与文物故迹防振规范——铁路、道路引起的地面振动计算分析报告[R].机械工业部第四设计研究院,2004.(YANG Xian-jian.In-dustrial environmental vibration and vibration specifica-tion——ground vibration calculation and analysis re-port caused by railways and roads[R].The Fourth Ma-chine Industry Design and Research Institute,Ministryof Machine-Building Industry,2004.(in Chinese))
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