地下结构开发对场地地表反应谱影响研究
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摘要
从抗震的角度来讲,地铁隧道等地下结构的建设,必然会引起场地土层以及邻近建筑物的地震动力响应发生变化。文章分析了地铁隧道建设前后,场地地表加速度和反应谱的变化情况。计算结果表明:与自由场地地震反应相比,隧道的建设对场地的地震反应特性有很大的影响,并与地震波的频谱特性有很大关系。文中初步给出了一些影响规律,为确定地铁附近已建或新建建筑的设计地震动参数提供了参考依据。建议在地铁等地下工程的规划和设计时考虑工程建设后对地表设计地震动的影响。
From the point of seismic design,the underground structures,such as subway,will greatly affect the seismic response of the ground and the buildings which are adjacent to the underground structures.The change of ground surface acceleration and response spectrum are analyzed before and after the subway construction.This paper presents results of numerical analyses:it is obvious that the excavated shallow tunnel has great influence on the design parameters of ground motion,which has close relationship with earthquake wave spectrum characteristics.The rules of variation are generalized in this paper,and the present conclusions can be referenced in seismic design parameters of ground motion and the building adjacent to the subway shallow tunnels.It is suggested that the effect of underground structures on ground motion is taken into consideration when the underground structures are planned and designed.
From the point of seismic design,the underground structures,such as subway,will greatly affect the seismic response of the ground and the buildings which are adjacent to the underground structures.The change of ground surface acceleration and response spectrum are analyzed before and after the subway construction.This paper presents results of numerical analyses:it is obvious that the excavated shallow tunnel has great influence on the design parameters of ground motion,which has close relationship with earthquake wave spectrum characteristics.The rules of variation are generalized in this paper,and the present conclusions can be referenced in seismic design parameters of ground motion and the building adjacent to the subway shallow tunnels.It is suggested that the effect of underground structures on ground motion is taken into consideration when the underground structures are planned and designed.
引文
[1]陈国兴,庄海洋,徐烨.软弱地基浅埋隧洞对场地设计地震动的影响[J].岩土工程学报,2004(6):739- 744.(CHEN Guo-xing,ZHUANG Hai-yang,XU Ye.A study on influence of excavated shallow tunnel on design parameters of ground motion in the soft site[J].Chinese Journal of Geotechnical Engineering.2004(6):739- 744.(in Chinese))
[2]林利民,陈健云.软土中浅埋地铁车站结构的抗震性能分析[J].防灾减灾工程学报,2006.26(3):268- 273.(LIN Li-min,CHEN Jian-yun.Analysis of earthquake -resistant capacity of shallow-buried subway station structures in soft soil[J]Journal of Disaster Prevention and Mitigation Engineering.2006.26(3):268 - 273.(in Chinese))
[3]Wolf J.Soil-structure Interaction Analysis in Time Domain[M].Prenthall,1987.
[4]Trifunac M D.Scattering of plane SH waves by a semi -cylindrical canyon[J].Earthquake Engineering and Structural Dynamics,1973,1:267-281.
[5]陈志刚,刘殿魁.椭圆孔对SH波散射的远场解[J].哈尔滨工程大学学报,2003,24(3):334-338. (CHEN Zhi-gang,LIN Dian-kui.Far field solution of SH wave scattering by elliptic cavity[J].Journal of Harbin Engineering University,2003,24(3):334 - 338.(in Chinese))
[6]袁晓铭,廖振鹏.圆弧形凹陷地形对平面SH波散射问题的级数解答[J].地震工程与工程振动,1993,13 (2):1-11.(YUAN Xiao-ming,LIAO Zhen-peng.Series solution for scattering of plane SH waves by a canyon of circular- arc cross section[J].Earthquake Engineering and Engineering Vibration.1993,13(2):1- 11.(in Chinese))
[7]Lee VW,Karl J.On Deformation near a Circular Underground Cavity Subjected to Incident Plane P Waves [J].European Journal of Earthquake Engineering, 1993,7(1):29-36.
[8]Lee V W,Karl J.Diffraction of SV Waves by Underground, Circular,Cylindrical Cavities[J]Soil Dynamics and Earthquake Engineering,1992,11:445-456.
[9]Davis C A,Lee VW,Bardet J P.Transverse response of underground cavities to incident SV waves[J].Earthquake Engineering and Structural Dynamics,2001,30 (3):383 -410.
[10]梁建文,纪晓东,Vincent W Lee.地下圆形衬砌隧道对沿线地震动的影响(1):级数解答[J].岩土力学, 2005.26(4):520-524.(LIANG Jian-wen,JI Xiao-dong, Lee V W.On the effects of an underground lined tunnel on ground motion(I):Series Solution [J].Soil and Rock Mechanics,2005,26(4):520- 524.(in Chinese))
[11]梁建文,纪晓东,Vincent W Lee.地下圆形衬砌隧道对沿线地震动的影响(2):数值结果[J].岩土力学, 2005.26(5):687-692.(LIANG Jian-wen,JI Xiao- dong,Lee V W.On the effects of an underground lined tunnel on ground motion(2) numerical solution[J].Soil and Rock Mechanics, 2005,26(5):687 -692.(in Chinese))
[12]Bouckovalas,Papadimitriou.Numerical evaluation of slope topography effects on seismic ground motion[J]. Soil Dynamics and Earthquake Engineering,2005,25 (7):547 -558.
[13]杨书燕,姜忻良,李新国.隧道对临近建筑物的地震反应影响分析[J].四川大学学报(工程科学版) 2007,39(3):41-46.(YANG Shu-yan,JIANG Xi-Liang, LI Xin-guo.Analysis on seismic response effect of tunnel to nearby structure[J].Journal of Sichuan University (Natural Science Edition).2007,39(3):41- 46.(in Chinese))
[14]ITASCA Consulting Group Inc FLAC3D Version 3.00. User's Manual.USA:Itasca Consulting Group Inc, 2005.
[2]林利民,陈健云.软土中浅埋地铁车站结构的抗震性能分析[J].防灾减灾工程学报,2006.26(3):268- 273.(LIN Li-min,CHEN Jian-yun.Analysis of earthquake -resistant capacity of shallow-buried subway station structures in soft soil[J]Journal of Disaster Prevention and Mitigation Engineering.2006.26(3):268 - 273.(in Chinese))
[3]Wolf J.Soil-structure Interaction Analysis in Time Domain[M].Prenthall,1987.
[4]Trifunac M D.Scattering of plane SH waves by a semi -cylindrical canyon[J].Earthquake Engineering and Structural Dynamics,1973,1:267-281.
[5]陈志刚,刘殿魁.椭圆孔对SH波散射的远场解[J].哈尔滨工程大学学报,2003,24(3):334-338. (CHEN Zhi-gang,LIN Dian-kui.Far field solution of SH wave scattering by elliptic cavity[J].Journal of Harbin Engineering University,2003,24(3):334 - 338.(in Chinese))
[6]袁晓铭,廖振鹏.圆弧形凹陷地形对平面SH波散射问题的级数解答[J].地震工程与工程振动,1993,13 (2):1-11.(YUAN Xiao-ming,LIAO Zhen-peng.Series solution for scattering of plane SH waves by a canyon of circular- arc cross section[J].Earthquake Engineering and Engineering Vibration.1993,13(2):1- 11.(in Chinese))
[7]Lee VW,Karl J.On Deformation near a Circular Underground Cavity Subjected to Incident Plane P Waves [J].European Journal of Earthquake Engineering, 1993,7(1):29-36.
[8]Lee V W,Karl J.Diffraction of SV Waves by Underground, Circular,Cylindrical Cavities[J]Soil Dynamics and Earthquake Engineering,1992,11:445-456.
[9]Davis C A,Lee VW,Bardet J P.Transverse response of underground cavities to incident SV waves[J].Earthquake Engineering and Structural Dynamics,2001,30 (3):383 -410.
[10]梁建文,纪晓东,Vincent W Lee.地下圆形衬砌隧道对沿线地震动的影响(1):级数解答[J].岩土力学, 2005.26(4):520-524.(LIANG Jian-wen,JI Xiao-dong, Lee V W.On the effects of an underground lined tunnel on ground motion(I):Series Solution [J].Soil and Rock Mechanics,2005,26(4):520- 524.(in Chinese))
[11]梁建文,纪晓东,Vincent W Lee.地下圆形衬砌隧道对沿线地震动的影响(2):数值结果[J].岩土力学, 2005.26(5):687-692.(LIANG Jian-wen,JI Xiao- dong,Lee V W.On the effects of an underground lined tunnel on ground motion(2) numerical solution[J].Soil and Rock Mechanics, 2005,26(5):687 -692.(in Chinese))
[12]Bouckovalas,Papadimitriou.Numerical evaluation of slope topography effects on seismic ground motion[J]. Soil Dynamics and Earthquake Engineering,2005,25 (7):547 -558.
[13]杨书燕,姜忻良,李新国.隧道对临近建筑物的地震反应影响分析[J].四川大学学报(工程科学版) 2007,39(3):41-46.(YANG Shu-yan,JIANG Xi-Liang, LI Xin-guo.Analysis on seismic response effect of tunnel to nearby structure[J].Journal of Sichuan University (Natural Science Edition).2007,39(3):41- 46.(in Chinese))
[14]ITASCA Consulting Group Inc FLAC3D Version 3.00. User's Manual.USA:Itasca Consulting Group Inc, 2005.
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