近似Rayleigh地震波作用下地下综合管廊响应分析
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摘要
地下综合管廊是一种重要的生命线基础设施,目前对其抗震性能的研究还处于起步阶段。由于属于浅埋地下结构,故地震波中的面波、尤其是Rayleigh波可能会成为地下综合管廊破坏的控制因素。本文根据简谐Rayleigh波的特点,提出了近似Rayleigh地震波的概念,并在假定已知Rayleigh波水平分量的情况下,利用傅里叶变换求得近似Rayleigh地震波场。采用三维有限元模型,对地下管廊结构进行了地震响应分析。分析结果表明:本文建议方法可以有效地模拟波动的传播过程;地下综合管廊结构的变形以整体弯曲变形为主;结构顶面应变约为对应底面位置应变的两倍,与Rayleigh波沿深度衰减的规律相类似。
The utility tunnel is one of the important lifelines.However,the research of its seismic perfor- mance is still at the initial stage.Usually,the utility tunnel is shallowlly buried,so the surface waves,es- pecially the Rayleigh ones,would be the control factor to its failure.This paper puts forward the concept of earthquake of approximate Rayleigh waves.And at the same time,the Rayleigh wave field is obtained with the Fourier's technique under the assumption that the time history of horizontal component of earth- quake is known.A 3-D finite element model is set up with the software ABAQUS to study the seismic re- sponse of the utility tunnel.From the calculated results,the wave propagation can be seen clearly and the structural deformation is dominated mainly by the bending deformation;the strain at the top point is about 2 times as large as that at the bottom point,which is similar to the character of the Rayleigh waves.
The utility tunnel is one of the important lifelines.However,the research of its seismic perfor- mance is still at the initial stage.Usually,the utility tunnel is shallowlly buried,so the surface waves,es- pecially the Rayleigh ones,would be the control factor to its failure.This paper puts forward the concept of earthquake of approximate Rayleigh waves.And at the same time,the Rayleigh wave field is obtained with the Fourier's technique under the assumption that the time history of horizontal component of earth- quake is known.A 3-D finite element model is set up with the software ABAQUS to study the seismic re- sponse of the utility tunnel.From the calculated results,the wave propagation can be seen clearly and the structural deformation is dominated mainly by the bending deformation;the strain at the top point is about 2 times as large as that at the bottom point,which is similar to the character of the Rayleigh waves.
引文
[1]唐海华．宁波市共同沟发展的系统研究[D]．上海：同济大学，2001．Tang H H.Systematic research on the development of the utility tunnel of Ningbo City[D].Shanghai:Tongji University,2001
[2]束昱．日本的共同沟[J]．中国人民防空，2003，(148)：40-41．
[3]魏小林，孟悦祥．上海浦东新区张扬路地下共同沟[J]．供用电，1997，14(4)：6-7．
[4]彭芳乐，孙德新，袁大军，等．城市道路地下空间与共同沟[J]．地下空间，2003，23(4)：421-426．Peng F L,Sun D X,Yuan D J,et al.Space under ur- ban roads and common trench[J].Underground Space,2003,23 (4):421-426.
[5]Hashash Y M A,Hook J J,Schmidt B,et al.Seismic design and analysis of underground structures[J]. Tunneling and Underground Space Technology,2001 (16):247-293.
[6]Wang J N.Seismic Design of Tunnels—A Simple State-of-the-Art Design Approach [M].New York: Parsons Brinckerhoff Inc.One Penn Plaza,1993.
[7]Miller G F,Pursey H.On the partition of energy be- tween elastic waves in a semi-infinite solid[J].Pro- ceeding of Royal Society,1955,A(233):55-69.
[8]Makris N.Soil-pile interaction during the passage of Rayleigh waves:an analytical solution[J].Earth- quake Engineering and Structural Dynamics,1994, (23):153-167.
[9]Makris N,Badoni D.Seismic response of pile groups under oblique-shear and Rayleigh waves[J].Earth- quake Engineering and Structural Dynamics,1995, (24):517-532.
[10]蒋东旗．远场地震作用下桩基的横向地震响应研究[D]．杭州：浙江大学，2002．Jiang D Q.On lateral seismic response of pile founda- tion induced by far-field earthquake [D].Hangzhou: Zhejiang University,2002.
[11]蒋东旗，王立忠，陈云敏．远场地震引起的单桩横向位移和内力[J]．岩土工程学报，2003，25(2)：174-178．Jiang D Q,Wang L Z,Chen Y M.Lateral displace- ment and internal force of single pile induced by far- field earthquake[J].Chinese Journal of Geotechnical Engineering,2003,25(2):174-i78.
[12]蒋东旗，郝玉龙，陈云敏．远场地震作用下桩间横向动力相互作用的研究[J]．地震工程与工程振动，2004，24 (4)：170-176．Jiang D Q,Hao Y L,Chen Y M.Lateral dynamic pile-pile interaction induced by far-field earthquake [J].Earthquake Engineering and Engineering Vibra- tion,2004,24(4):170-176.
[13]刘晶波，李彬．Rayleigh波作用下地下结构的动力反应分析[J]．工程力学，2006，23(10)：132-135．Liu J B,Li B.Dynamic response analysis of under- ground structures during the propagation of Rayleigh waves[J].Engineering Mechanics,2006,23(10): 132-135.
[14]吴世明．土介质中的波[M]．北京：科学出版社，1997．Wu S M．Waves in Soil[M]．Beijing：Science Press，1997．
[15]岳庆霞，李杰．地下综合管廊地震响应研究[J]．同济大学学报，2008(待刊)．Yue Q X,Li J.Research on the seismic response of the utility tunnel [J].Journal of Tongji University, 2008 (in press).
[2]束昱．日本的共同沟[J]．中国人民防空，2003，(148)：40-41．
[3]魏小林，孟悦祥．上海浦东新区张扬路地下共同沟[J]．供用电，1997，14(4)：6-7．
[4]彭芳乐，孙德新，袁大军，等．城市道路地下空间与共同沟[J]．地下空间，2003，23(4)：421-426．Peng F L,Sun D X,Yuan D J,et al.Space under ur- ban roads and common trench[J].Underground Space,2003,23 (4):421-426.
[5]Hashash Y M A,Hook J J,Schmidt B,et al.Seismic design and analysis of underground structures[J]. Tunneling and Underground Space Technology,2001 (16):247-293.
[6]Wang J N.Seismic Design of Tunnels—A Simple State-of-the-Art Design Approach [M].New York: Parsons Brinckerhoff Inc.One Penn Plaza,1993.
[7]Miller G F,Pursey H.On the partition of energy be- tween elastic waves in a semi-infinite solid[J].Pro- ceeding of Royal Society,1955,A(233):55-69.
[8]Makris N.Soil-pile interaction during the passage of Rayleigh waves:an analytical solution[J].Earth- quake Engineering and Structural Dynamics,1994, (23):153-167.
[9]Makris N,Badoni D.Seismic response of pile groups under oblique-shear and Rayleigh waves[J].Earth- quake Engineering and Structural Dynamics,1995, (24):517-532.
[10]蒋东旗．远场地震作用下桩基的横向地震响应研究[D]．杭州：浙江大学，2002．Jiang D Q.On lateral seismic response of pile founda- tion induced by far-field earthquake [D].Hangzhou: Zhejiang University,2002.
[11]蒋东旗，王立忠，陈云敏．远场地震引起的单桩横向位移和内力[J]．岩土工程学报，2003，25(2)：174-178．Jiang D Q,Wang L Z,Chen Y M.Lateral displace- ment and internal force of single pile induced by far- field earthquake[J].Chinese Journal of Geotechnical Engineering,2003,25(2):174-i78.
[12]蒋东旗，郝玉龙，陈云敏．远场地震作用下桩间横向动力相互作用的研究[J]．地震工程与工程振动，2004，24 (4)：170-176．Jiang D Q,Hao Y L,Chen Y M.Lateral dynamic pile-pile interaction induced by far-field earthquake [J].Earthquake Engineering and Engineering Vibra- tion,2004,24(4):170-176.
[13]刘晶波，李彬．Rayleigh波作用下地下结构的动力反应分析[J]．工程力学，2006，23(10)：132-135．Liu J B,Li B.Dynamic response analysis of under- ground structures during the propagation of Rayleigh waves[J].Engineering Mechanics,2006,23(10): 132-135.
[14]吴世明．土介质中的波[M]．北京：科学出版社，1997．Wu S M．Waves in Soil[M]．Beijing：Science Press，1997．
[15]岳庆霞，李杰．地下综合管廊地震响应研究[J]．同济大学学报，2008(待刊)．Yue Q X,Li J.Research on the seismic response of the utility tunnel [J].Journal of Tongji University, 2008 (in press).
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