重力式方块码头的抗震动力性能分析
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摘要
以抗震性能相对较差的带有卸荷板的重力式方块码头为研究对象,首先对其在静力荷载作用下的变形和等效应力及稳定性进行了初步分析,然后对其在规范拟静力地震作用下和基于动力时程的强震记录下的水平地震惯性力、水平和竖向变形、最大等效应力、抗滑移和抗倾覆稳定性进行了对比分析。结果表明强震作用下除了码头的抗倾覆和抗滑移验算外,对结构的水平残余变形和竖向沉降变形同样要给予密切的关注,按当前规范给出的标准进行抗震设计,罕遇地震下会存在一定的风险。
The earthquake resistance of the block quay wall was relatively weak and the residual deformation,the maximum of the equivalent stress and the sliding and overturning stability of the block quay wall under the static loading were firstly analyzed.Furthermore,the pseudo static method and the dynamic history analysis were respectively employed to derive the lateral seismic inertia force,the horizontal and vertical deformation,the maximum of equivalent stress,the stability against sliding and overturning.The results of analyses indicated that more attention have to be paid to the horizontal deformation and the settlement displacement when a rare earthquake occurs,besides the sliding and overturning stability.The block quay wall which was designed with the current standards and criteria will sustain some damage under strong ground motion.
The earthquake resistance of the block quay wall was relatively weak and the residual deformation,the maximum of the equivalent stress and the sliding and overturning stability of the block quay wall under the static loading were firstly analyzed.Furthermore,the pseudo static method and the dynamic history analysis were respectively employed to derive the lateral seismic inertia force,the horizontal and vertical deformation,the maximum of equivalent stress,the stability against sliding and overturning.The results of analyses indicated that more attention have to be paid to the horizontal deformation and the settlement displacement when a rare earthquake occurs,besides the sliding and overturning stability.The block quay wall which was designed with the current standards and criteria will sustain some damage under strong ground motion.
引文
[1]Alyami M,Rouainia M,Wilkinson S M.Numerical Analysis ofDeformation Behavior of Quay Walls under Earthquake Loading[J].Soil Dynamics and Earthquake Engineering,2009,29(3):525-536.
[2]Miura Kinya.Instability of Gravity Type Quay Wall duringEarthquake with Regard to Dynamic Interaction with BackfillGround[C]//Proceedings of the International Offshore and PolarEngineering Conference.Sapporo:ISOPE,1999:512-519.
[3]陈福全,龚晓南.大直径圆筒码头结构的有限元分析[J].水利水运工程学报,2001(4):37-40.
[4]蒋国栋,张日向,姜萌.板桩码头的ANSYS有限元分析[J].中国水运,2009,9(9):81-83.
[5]Donahue Matthew J.Comparison of 3D Modeling to RecordedSeismic Response for a Pile Supported Wharf[C]//Proceedings ofthe Port Development in the Changing World,PORTS 2004.America:American Society of Civil Engineers,2004:327-336.
[6]Chin King H,Mageau Daniel W,Peterson Scott T.Comparison ofPanama Wharf Performance Using Numerical Analysis and LimitEquilibrium Methods[C]//Proceedings of the Geotechnical EarthquakeEngineering and Soil Dynamics IV Congress 2008.America:American Society of Civil Engineers,2008:181.
[7]魏德敏,康锦霞,韩海崴.基础隔震高层建筑地震响应的理论分析[J].地震工程与工程振动,2003,23(1):140-144.
[8]JT J225—98,水运工程抗震设计规范[S].
[9]GB50011—2001,建筑抗震设计规范[S].
[2]Miura Kinya.Instability of Gravity Type Quay Wall duringEarthquake with Regard to Dynamic Interaction with BackfillGround[C]//Proceedings of the International Offshore and PolarEngineering Conference.Sapporo:ISOPE,1999:512-519.
[3]陈福全,龚晓南.大直径圆筒码头结构的有限元分析[J].水利水运工程学报,2001(4):37-40.
[4]蒋国栋,张日向,姜萌.板桩码头的ANSYS有限元分析[J].中国水运,2009,9(9):81-83.
[5]Donahue Matthew J.Comparison of 3D Modeling to RecordedSeismic Response for a Pile Supported Wharf[C]//Proceedings ofthe Port Development in the Changing World,PORTS 2004.America:American Society of Civil Engineers,2004:327-336.
[6]Chin King H,Mageau Daniel W,Peterson Scott T.Comparison ofPanama Wharf Performance Using Numerical Analysis and LimitEquilibrium Methods[C]//Proceedings of the Geotechnical EarthquakeEngineering and Soil Dynamics IV Congress 2008.America:American Society of Civil Engineers,2008:181.
[7]魏德敏,康锦霞,韩海崴.基础隔震高层建筑地震响应的理论分析[J].地震工程与工程振动,2003,23(1):140-144.
[8]JT J225—98,水运工程抗震设计规范[S].
[9]GB50011—2001,建筑抗震设计规范[S].
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