题目: 地震作用下海底沉管隧道的动力响应分析题目需要翻译摘要：基于粘

题目: 地震作用下海底沉管隧道的动力响应分析

题目需要翻译

摘要：基于粘弹性人工边界理论，将地震动的输入转化为作用于人工边界的等效荷载来实现波动的输入，利用有限元软件ADINA建立了海水—沉管隧道—海床的整体分析模型，在模型的海水与海床的交界面处设置流固耦合边界来考虑海水与海床的流固耦合动力反应，分析了地震P波垂直入射作用下，海水深度、沉管隧道的埋置深度和海床土的弹性模量对沉管隧道结构地震反应的影响。结果表明：地震P波垂直入射作用下，沉管隧道结构的竖向地震响应远高于水平向地震响应；海水深度和埋置深度对沉管隧道结构水平向与竖向的动力响应影响明显，而海床土弹性模量则影响不大。本文的分析结果可以对沉管隧道结构抗震设计方面提供参考依据。
关键词：粘弹性人工边界；等效荷载；海水—沉管隧道—海床；流固耦合动力反应；垂直入射；地震响应

关键词也要翻译

图3 平面P波垂直入射
图5 入射P波位移时程曲线
图6平面P波入射时A点的竖向位移
图10 EI-centro波的加速度时程曲线
表2 不同海水深度的应力峰值
表3 不同埋置深度的应力峰值
表4 不同海床土弹性模量的应力峰值

結果 (英文) 1:

Topic: earthquake dynamic response analysis of seabed under the action of immersed tunnelQuestions need to be translated Summary: based on stick elastic artificial border theory, will earthquake moving of entered into for role Yu artificial border of equivalent load contains to achieved fluctuations of entered, using limited Yuan software ADINA established has seawater-sank tube tunnel-sea bed of overall analysis model, in model of seawater and sea bed of junction surface at set flow solid coupled border to consider seawater and sea bed of flow solid coupled power reaction, analysis has earthquake p wave vertical incident role Xia, seawater depth, and Immersed tube tunnel buried depth and seabed soil elastic modulus effect on seismic response of immersed tunnel. Results indicate that under the action of vertical incidence seismic p-waves, vertical seismic response of immersed tube tunnel structure is far higher than the horizontal seismic responses of sea depth and level of embedded depth of immersed tube tunnel structure of vertical dynamic response of impact significantly, while the seabed soil young's modulus has little effect. This analysis of immersed tube tunnel structure design to provide the reference.Key words: viscous-spring artificial boundary; the equivalent load; water-immersed tube tunnel-seabed; fluid-structure coupling dynamic response perpendicular; seismic responseKeywords to be translatedFigure 3 incident plane p-wave verticalFigure 5 incident p waves of displacement curveFigure 6 plane p-wave is incident at a point of vertical displacementFigure 10 EI-centro wave acceleration time curveTable 2 different depths of stressTable 3 different embedded depth of peak stressTable 4 different elastic modulus of seabed soil stress

結果 (英文) 3:

Topic: analysis of dynamic response of seabed immersed tunnel under earthquakeTopic needs translationFor Abstract: Based on the theory of viscoelastic artificial boundary, earthquake ground motion input transformation role on the artificial boundary equivalent load to realized volatility of input and established seawater immersed tunnel - the seabed of the whole analysis model using the finite element software ADINA, in the interface between model of seawater and sea bed set FSI boundary to consider seawater and seabed fluid solid coupling dynamic response, analysis the seismic P wave vertical incidence under the action, the water depth, the immersed tunnel buried depth and seabed soil elastic modulus on seismic response of immersed tube tunnel effect. The results show that the seismic P wave vertical incidence function, immersed tube tunnel vertical seismic response is much higher than the level of response to the earthquake; seawater depth and buried depth of immersed tube tunnel structure level and vertical dynamic response to the effect, and elastic modulus of seabed soil influence not big. The results of this study can provide reference basis for the seismic design of tunnel structure.Keywords: viscous elastic artificial boundary; equivalent load; seawater immersed tunnel - seabed; flow solid coupling dynamic response; normal incidence; seismic responseKey words also want to translateFig. 3 normal incidence of plane P waveFig. 5 displacement time history curve of incident P waveFig. the vertical displacement of A points in the plane P wave incidentFig 10 acceleration time history curve of EI-centro waveTable 2 stress peak value of different sea water depthTable 3 stress peak value of different buried depthTable 4 stress peak value of elastic modulus of soil in different seabed