输水隧道在行波激励下的三维地震反应分析
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摘要
随着大规模调水工程的建设,穿越软土地区的浅埋输水隧道的抗震性能的重要性愈加突出,这就涉及到地震动的输入问题。而对于空间尺度很大的大型输水隧道,地震动输入的空间变化特性即多点输入对输水隧道的地震响应产生重要的影响。所以在考虑了衬砌-水体-围岩的相互作用的同时,还考虑了地震波有限波速传播所引起的行波效应及不同地震动激励方向对三维输水隧道的地震动的影响。结果表明:与地震动一致输入相比,行波效应将对输水隧道的地震响应产生不利的影响。
The aseismic performance of shallow buried water-supplying tunnel in soft soil area is becoming more and more important with the development of large-scale water transportation. The problem of earthquake input pattern has been referred. For large-scale water-conveying tunnel, the spatial variation characteristics of earthquake excitation, namely, multi-point input has great effects on seismic response of the water-conveying tunnel. Aim at this problem, the paper considers interaction among surrounding rock tunnel lining and water, at the same time, traveling wave effect and influence of different exciting direction of earthquake motion. The result indicates: compared with the coincident earthquake excitation, traveling wave effect brings disadvantageous influence on seismic response of the water-conveying tunnel.
The aseismic performance of shallow buried water-supplying tunnel in soft soil area is becoming more and more important with the development of large-scale water transportation. The problem of earthquake input pattern has been referred. For large-scale water-conveying tunnel, the spatial variation characteristics of earthquake excitation, namely, multi-point input has great effects on seismic response of the water-conveying tunnel. Aim at this problem, the paper considers interaction among surrounding rock tunnel lining and water, at the same time, traveling wave effect and influence of different exciting direction of earthquake motion. The result indicates: compared with the coincident earthquake excitation, traveling wave effect brings disadvantageous influence on seismic response of the water-conveying tunnel.
引文
[1]Kiureghian.A.D,Neuenhofer.A.Response spec-trum method fox multi-support seismic excitations[J].EESD,1992,(21):713-740
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[11]王有智,夏卫华.用大质量法计算东风EQ140汽车前面罩的强迫运动响应[J].力学与实践,1998,20(5):32-34Wang Y Z,Xia W H.The calculation of enforced mo-tion response of the front face of Dongfeng EQ140truck by the large mass method[J].Mechanics and Engineering,1998,20(5):32-34
[12]杨德庆,王德禹,汪庠宝.考虑星—箭动力耦合作用结构瞬态响应分析[J].宇航学报,2003,24(2):213-216Yang D Q,Wang D Y,Wang X B.Structural tran-sient response analysis considering satellite-rocket dy-namic coupling effect[J].Journal of Astronautics,2003,24(2):213-216
[13]陈幼平,周宏业.斜拉桥地震反应特性[J].中国铁道科学,1996,17(1):1-8Chen Y P,Zhou H Y.Earthquake response charac-teristics of cable-stayed bridges[J].China Railway Science,1996,17(1):1-8
[14]史志利,周立志.大跨度桥梁抗震设计和振动控制的研究和应用现状[J].城市道桥与防洪,2002,(4):7-13Shi Z L,Zhou L Z.Present situation of study and ap-plication of seismic design and vibration control of long-span bridges[J].Urban Roads Bridges&Flood Control,2002,(4):7-13
[15]赵密.粘弹性人工边界及其与透射人工边界的比较研究[D].北京:北京工业大学,2004Zhao M.Study on the viscous-spring boundary and the transmitting boundary[D].Beijing:Beijing Uni-versity of Technology,2004
[2]Kiureghian.A.D,Neuenhofer.A.Acoherency mod-el for spatially varying ground motions[J].EESD,1996,(25):99-111
[3]梁爱虎,陈厚群,侯顺载.随机地震动场激励下拱坝多点输入的抗震可靠度分析[J].地震工程与工程振动,1996,16(1):49-59Liang A H,Chen HQ,Hou S Z.The reliability anal-ysis of earthquake-resistant arch dam subjected to ran-dom multi-support input[J].Earthquake Engineering and Engineering Vibration,1996,16(1):49-59
[4]史志利,周立志,李忠献.空间变化地震激励下大跨度桥梁地震反应分析[J].特种结构,2003,20(4):71-75Shi Z L,Zhou L Z,Li Z X.Seismic response analysis for continuous rigid-framed bridges under multi-sup-port excitation[J].Special Structures,2003,20(4):71-75
[5]史志利,李忠献.随机地震动场多点激励下大跨度桥梁抗震分析方法[J].地震工程与工程振动,2003,23(4):124-130Shi Z L,Li Z X.Methods of seismic response analysis for long-span bridges under multi-support excitations of random earthquake ground motion[J].Earthquake Engineering and Engineering Vibration,2003,23(4):124-130
[6]苗家武,胡世德,范立础.大型桥梁多点激励效应的研究现状与发展[J].同济大学学报,1999,27(2):189-193Miao J W,Hu S D,Fan L C.State of art and devel-opment of study on seismic performance of long span bridges under multiple-support excitations[J].Jour-nal of Tongji University,1999,27(2):189-193
[7]A.S.Nazmy,A.M.Abdel-Ghaffar.Effects of ground motion spatial variability on the response of the cable stayed bridges[J].Earthquake Eng.Struct.Dyn.1992,(21):1-21
[8]R.S.Harichadran,A.Hawwariand,B.N.Swei-dan.Response of long span bridges to spatially vary-ing ground motion[J].Struct.Eng.1996,122(5):476-484
[9]范立础,胡世德,叶爱君.大跨度桥梁抗震设计[M].北京:人民交通出版社,2001Fan L C,Hu S D,Ye A J.Seismic Design for Long Span Bridges[M].Beijing:China Communications Press,2001
[10]范立础.大跨度桥梁抗震[M].北京:人民交通出版社,2001Fan L C.Resistance of Long Span Bridges[M].Bei-jing:China Communications Press,2001
[11]王有智,夏卫华.用大质量法计算东风EQ140汽车前面罩的强迫运动响应[J].力学与实践,1998,20(5):32-34Wang Y Z,Xia W H.The calculation of enforced mo-tion response of the front face of Dongfeng EQ140truck by the large mass method[J].Mechanics and Engineering,1998,20(5):32-34
[12]杨德庆,王德禹,汪庠宝.考虑星—箭动力耦合作用结构瞬态响应分析[J].宇航学报,2003,24(2):213-216Yang D Q,Wang D Y,Wang X B.Structural tran-sient response analysis considering satellite-rocket dy-namic coupling effect[J].Journal of Astronautics,2003,24(2):213-216
[13]陈幼平,周宏业.斜拉桥地震反应特性[J].中国铁道科学,1996,17(1):1-8Chen Y P,Zhou H Y.Earthquake response charac-teristics of cable-stayed bridges[J].China Railway Science,1996,17(1):1-8
[14]史志利,周立志.大跨度桥梁抗震设计和振动控制的研究和应用现状[J].城市道桥与防洪,2002,(4):7-13Shi Z L,Zhou L Z.Present situation of study and ap-plication of seismic design and vibration control of long-span bridges[J].Urban Roads Bridges&Flood Control,2002,(4):7-13
[15]赵密.粘弹性人工边界及其与透射人工边界的比较研究[D].北京:北京工业大学,2004Zhao M.Study on the viscous-spring boundary and the transmitting boundary[D].Beijing:Beijing Uni-versity of Technology,2004
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