地铁运行对地面环境的振动影响
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摘要
为了分析地铁运行对地面环境的振动影响,以ABAQUS为计算平台,建立了不同埋深下地铁车站-地基动力相互作用二维有限元模型。输入不同频率的简谐荷载,通过数值计算得到了地面点振动与输入荷载频率的关系;输入实测的列车振动荷载,得到了地铁车站埋深不同时地面点的振动规律;改变土的力学参数,对结果进行对比分析,得到了土的性质对振动传播的影响规律。为地铁车站的选址和地铁车站附近建筑物的隔震减震提供了依据。
In order to study ground vibrations induced by metro running,metro station-foundation dynamic interaction 2-dimensional finite element models with different station burial depths are established on the platform of ABAQUS finite-element software.With harmonic loads with different frequencies inputs,the relationship between ground vibration and input load's frequency is obtained through numerical calculations.With actual train vibration load inputs,the ground vibration characteristics under different station burial depths are obtained.With mechanical parameters of soil changed,the vibration propagation characteristics influenced by soil itself are obtained.The results provide some useful references for both site selection of metro-stations and vibration reduction of adjacent buildings.
In order to study ground vibrations induced by metro running,metro station-foundation dynamic interaction 2-dimensional finite element models with different station burial depths are established on the platform of ABAQUS finite-element software.With harmonic loads with different frequencies inputs,the relationship between ground vibration and input load's frequency is obtained through numerical calculations.With actual train vibration load inputs,the ground vibration characteristics under different station burial depths are obtained.With mechanical parameters of soil changed,the vibration propagation characteristics influenced by soil itself are obtained.The results provide some useful references for both site selection of metro-stations and vibration reduction of adjacent buildings.
引文
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[2]刘建达,苏晓梅,陈国兴,等.地铁运行引起的地面振动分析[J].自然灾害学报,2007,16(5):148-154.
[3]和振兴,翟婉明,罗霞.地铁列车引起的地面振动[J].西南交通大学学报,2008,43(2):218-221.
[4]栗润德,张鸿儒,刘维宁.北京地铁1号线地面振动响应测试与分析[J].北京交通大学学报,2007,31(4):31-34.
[5]楼梦麟,贾旭鹏,俞洁勤.地铁运行引起的地面振动实测及传播规律分析[J].防灾减灾工程学报,2009,29(3):282-287.
[6]邬玉斌,刘如山,杨学山,等.地铁交通对某实验楼的环境振动的模拟分析[J].世界地震工程,2008,24(4):70-75.
[7]陶连金,李晓霖,陆熙,等.地铁诱发地面运动的衰减规律的研究分析[J].世界地震工程,2003,19(1):83-87.
[8]李广信.高等土力学[M].北京:清华大学出版社,2004.
[9]张云,薛禹群,吴吉春,等.上海第四纪土层邓肯—张模型的参数研究[J].水文地质工程地质,2008,1(1):19-22.
[10]夏禾,吴萱.城市轨道交通系统引起的环境振动问题[J].北方交通大学学报,1999,23(4):1-6.
[11]Lysmer J,Kuhlemeyer R L.Finite dynamic model for infinite media[J].Journal of Engineering Mechanics,ASCE,1969,95(EM4):759-877.
[12]万胜国,梁晖,周华杰.地铁运行引起环境振动的评价方法[J].武汉工程大学学报,2009,31(5):25-28.
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