群桩(土)-承台-结构的动力相互作用分析
|
摘要
基于共同作用理论,在导出了时域中上、下部相互作用动力平衡方程的基础上,利用桩-桩动力相互作用因子法获取了群桩的动力阻抗,对水平地震作用下群桩-土-上部结构的反应特性进行了较全面的分析。着重讨论并估计了群桩抽桩布置于体系动力反应的影响,通过数值计算分析,取得了一些有价值的认识,并认为受水平地震力作用桩承结构也可借鉴考虑竖向上、下部共同作用沉降优化的理念和思想来进行抽桩设计。
The interactive dynamic equilibrium equations of pile group-soil-structure system in time-domain are derived. The characteristic response of pile-soil-structure under vertical seismic s-wave is analyzed comprehensively by means of dynamic interactive factors of pile-to- pile which can be used to obtain impedance of pile-groups. The effect with various taking out-collocation of pile-groups on dynamic response of system is emphasized and evaluated on numerical computation, and some helpful conclusions are also obtained. In addition, a new design idea on pile-supported structures subjected to horizontal seismic load is presented with referring to the concept of settlement optimization which has been applied to vertical static analysis of soil-pile-structure systems.
The interactive dynamic equilibrium equations of pile group-soil-structure system in time-domain are derived. The characteristic response of pile-soil-structure under vertical seismic s-wave is analyzed comprehensively by means of dynamic interactive factors of pile-to- pile which can be used to obtain impedance of pile-groups. The effect with various taking out-collocation of pile-groups on dynamic response of system is emphasized and evaluated on numerical computation, and some helpful conclusions are also obtained. In addition, a new design idea on pile-supported structures subjected to horizontal seismic load is presented with referring to the concept of settlement optimization which has been applied to vertical static analysis of soil-pile-structure systems.
引文
[1]王开顺.地基阻抗与结构地震反应[J].地震工程与工程震动,1985,5(2):87-102.WangKaishun.Impedance of subsoil and seimic response of structures[J].EarthquakeEngineering andEngineeringVibration,1985,5(2):87-102.(inChinese)
[2]WolfJ P.Dynamic soil-structure interaction[M].Prentice-Hall,Inc.EnglewoodCliffs,N.J,1985.1-120.
[3]王开顺,王有为,李林友.土与结构相互作用地震反应研究及实用计算[J].建筑结构学报,1986,7(2):64-76.WangKaishun,WangYouwei,LiLinyou.Seismic response of soil-structure interaction and its practical calculation[J].Journal ofBuildingStructure,1986,7(2):64-76.(inChinese)
[4]TajimiH.DynamicAnalysis of a structure embedded in an elastic stratum[C].Proc.4thWorldConferenceEarthquakeEngineering,Chile,1969.278-287.
[5]M Novak,B EL.Sharnouby.Stiffness constants of single piles[J].Journal ofGeotechnicalEngineering,ASCE,1983,109(7):961-975.
[6]A Velez,G Gazetas,R Krihnan.Lateral dynamic response of constrained head piles[J].Journal ofGeotechnicalEngineering,ASCE,1983,109(8):1063-1081.
[7]应稼年,王荣昌,俞载道.地基土-桩基础-核电站辅助厂房结构相互作用体系的地震响应分析[J].地震工程与工程震动,1995,15(1):44-52.YingJianian,WangRongchang,YuZaidao.Earthquake response analysis of soil-pile-nuclear power station auxiliary workshop structure interaction system[J].EarthquakeEngineering andEngineeringVibration,1995,15(1):44-52.(inChinese)
[8]N Makris,G Gazetas.Dynamic pile-soil interaction.PartII:Lateral andSeismicResponse[J].EarthquakeEngineering andStructureDynamic,1992,21(2):145-161.
[9]楼梦麟,吴京宁.桩基-结构体系的地震响应分析[J].土木工程学报,1999,32(5):56-61.LouMenglin,WuJingning.Seismic response analysis of pile foundation structure systems[J].Journal ofCivilEngineering,1999,32(5):56-61.(inChinese)
[10]JeanW Y.System parameters of soil foundation for time domain dynamic analysis[J].EarthquakeEngineering andStructureDynamic,1990,19(3):541-553.
[11]J P Stewart,G L Fenves,R B Seed.Seismic soil-structure interaction in buildingI:Analytical methods[J].Journal ofGeotechnicaal andGeoenvironmentalEngineering,ASCE,1999,125(1):26-37.
[2]WolfJ P.Dynamic soil-structure interaction[M].Prentice-Hall,Inc.EnglewoodCliffs,N.J,1985.1-120.
[3]王开顺,王有为,李林友.土与结构相互作用地震反应研究及实用计算[J].建筑结构学报,1986,7(2):64-76.WangKaishun,WangYouwei,LiLinyou.Seismic response of soil-structure interaction and its practical calculation[J].Journal ofBuildingStructure,1986,7(2):64-76.(inChinese)
[4]TajimiH.DynamicAnalysis of a structure embedded in an elastic stratum[C].Proc.4thWorldConferenceEarthquakeEngineering,Chile,1969.278-287.
[5]M Novak,B EL.Sharnouby.Stiffness constants of single piles[J].Journal ofGeotechnicalEngineering,ASCE,1983,109(7):961-975.
[6]A Velez,G Gazetas,R Krihnan.Lateral dynamic response of constrained head piles[J].Journal ofGeotechnicalEngineering,ASCE,1983,109(8):1063-1081.
[7]应稼年,王荣昌,俞载道.地基土-桩基础-核电站辅助厂房结构相互作用体系的地震响应分析[J].地震工程与工程震动,1995,15(1):44-52.YingJianian,WangRongchang,YuZaidao.Earthquake response analysis of soil-pile-nuclear power station auxiliary workshop structure interaction system[J].EarthquakeEngineering andEngineeringVibration,1995,15(1):44-52.(inChinese)
[8]N Makris,G Gazetas.Dynamic pile-soil interaction.PartII:Lateral andSeismicResponse[J].EarthquakeEngineering andStructureDynamic,1992,21(2):145-161.
[9]楼梦麟,吴京宁.桩基-结构体系的地震响应分析[J].土木工程学报,1999,32(5):56-61.LouMenglin,WuJingning.Seismic response analysis of pile foundation structure systems[J].Journal ofCivilEngineering,1999,32(5):56-61.(inChinese)
[10]JeanW Y.System parameters of soil foundation for time domain dynamic analysis[J].EarthquakeEngineering andStructureDynamic,1990,19(3):541-553.
[11]J P Stewart,G L Fenves,R B Seed.Seismic soil-structure interaction in buildingI:Analytical methods[J].Journal ofGeotechnicaal andGeoenvironmentalEngineering,ASCE,1999,125(1):26-37.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心