高架铁路振动测试分析及防振动措施
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摘要
研究目的:拟建某铁路以高架桥线路形式穿越上海外高桥保税区,距某公司拟建芯片加工厂约250 m。为确保芯片加工厂正常生产的振动环境,特对高架铁路振动进行类比测试分析并根据测试结果提出防振动措施。研究结论:芯片加工厂所在地块已受周边城市道路集装箱卡车振动影响,振动值已超过芯片加工车间基础容许振动速度;对既有沪杭线类比监测表明,旅客列车、货车会车时,距线路250 m处地表振动值与芯片加工厂环境振动现状值相当,超过容许振动速度值。考虑到该公司在距铁路线500 m有建厂的经历,研究主要论证通过采取减振措施使距铁路外轨中心线250 m距离的振动水平相当于500 m距离的振动水平,研究表明减振措施可行。
Research purposes:The planned Shanghai-Nantong Railway will pass through the Shanghai Waigaoqiao Free Trade Zone on viaduct and it will be about 250 m away from a chip processing plant.In order to ensure the normal production of the chip processing factory,it is necessary to test and analyze the vibration induced by the elevated railway and present the anti-vibration measures according to the test results. Research conclusions:The vibration value of the place around the chip processing factory has exceeded the allowable vibration velocity for the foundation of the chip processing workshop because of the vibration induced by the container truck on the peripheral road.The similar vibration tests and monitoring for the existing Shanghai-Hangzhou Railway showed the vibration value of the ground 250 m away from the track was equivalent to the that of the chip processing factory when the passenger train met with the freight train and it exceeded the allowable vibration velocity.On consideration of that the building was built in the place about 500 m away from the railway,the study mainly demonstrated how to reduce the vibration level of the place 250 m far away from the railway to being equivalent to that of the place 500 m far away from railway.The study showed the anti-vibration measures were feasible.
Research purposes:The planned Shanghai-Nantong Railway will pass through the Shanghai Waigaoqiao Free Trade Zone on viaduct and it will be about 250 m away from a chip processing plant.In order to ensure the normal production of the chip processing factory,it is necessary to test and analyze the vibration induced by the elevated railway and present the anti-vibration measures according to the test results. Research conclusions:The vibration value of the place around the chip processing factory has exceeded the allowable vibration velocity for the foundation of the chip processing workshop because of the vibration induced by the container truck on the peripheral road.The similar vibration tests and monitoring for the existing Shanghai-Hangzhou Railway showed the vibration value of the ground 250 m away from the track was equivalent to the that of the chip processing factory when the passenger train met with the freight train and it exceeded the allowable vibration velocity.On consideration of that the building was built in the place about 500 m away from the railway,the study mainly demonstrated how to reduce the vibration level of the place 250 m far away from the railway to being equivalent to that of the place 500 m far away from railway.The study showed the anti-vibration measures were feasible.
引文
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[8]肖世伟,雷长顺,郭超,等.高速铁路空沟隔振数值分析[J].铁道工程学报,2011(8):23-29.Xiao Shiwei,Lei Changshun,Guo Chao,etc.Numerical Analysis of Vibration Reduction of OpenTrench for High-speed Railway[J].Journal ofRailway Engineering Society,2011(8):23-29.
[9]罗锟,雷晓燕,刘庆杰,等.地屏障在铁路环境振动治理工程中的应用研究[J].铁道工程学报,2009(1):1-6.Luo Kun,Lei Xiaoyan,Liu Qingjie,etc.Research onthe Application of Ground Barrier in Reducing theVibration Along High-speed Railway[J].Journal ofRailway Engineering Society,2009(1):1-6.
[2]张昕,蒋通.考虑轨道不平顺的车-桥动力分析[J].力学季刊,2003(1):19-26.Zhang Xin,Jiang Tong.Dynamic Analysis of Train-bridge System Considering Rail Irregularity[J].Chinese Quarterly of Mechanics,2003(1):19-26.
[3]Shen-Haw Ju.Finite Element Analysis of BuildingVibrations Induced by High–speed Train[J].Environmental Vibration,Chen&Takemiya(eds.),Hangzhou,China,2003:252-263.
[4]Takemiya H and Fujiwara A.Wave Propagation-impediment in a Stratum and Wave Impeding Block(WIB)Measured for SSI Response Reduction[J].SoilDynamics and Earthquake Engineering,1994(1):49-61.
[5]Terumi TOUHEI.Impulsive Response of an ElasticLayered Medium in the Anti-Plane Wave Field Basedon a Thin-Layered Element and Discrete WaveNumber Method[J].Structural Eng./EarthquakeEng.,JSCE,1993(22):119-128.第6期张良涛:高架铁路振动测试分析及防振动措施
[6]高广运,杨先健,王贻荪,等.排桩隔振的理论与应用[J].建筑结构学报,1997(4):58-68.Gao Guangyun,Yang Xianjian,Wang Yisun,etc.Theory and Application of Vibration Isolation by Piles inRows[J].Journal of Building Structures,1997(4):58-68.
[7]高广运,李伟.二维地基波阻板隔振分析[J].地震工程与工程振动,2005(2):130-135.Gao Guangyun,Li Wei.2-D Analysis of GroundVibration Isolation Using Wave Impeding Block[J].Earthquake Engineering and Engineering Vibration,2005(2):130-135.
[8]肖世伟,雷长顺,郭超,等.高速铁路空沟隔振数值分析[J].铁道工程学报,2011(8):23-29.Xiao Shiwei,Lei Changshun,Guo Chao,etc.Numerical Analysis of Vibration Reduction of OpenTrench for High-speed Railway[J].Journal ofRailway Engineering Society,2011(8):23-29.
[9]罗锟,雷晓燕,刘庆杰,等.地屏障在铁路环境振动治理工程中的应用研究[J].铁道工程学报,2009(1):1-6.Luo Kun,Lei Xiaoyan,Liu Qingjie,etc.Research onthe Application of Ground Barrier in Reducing theVibration Along High-speed Railway[J].Journal ofRailway Engineering Society,2009(1):1-6.
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