IR
黄土围岩隧道结构的多场耦合地震响应及动力稳定分析
Project Number51478212
程选生
Abstract随着工程建设的迅速发展和西部大开发的不断深入,黄土围岩隧道已成为土体围岩隧道的重要组成部分。现有文献虽对黄土围岩隧道的抗、减震研究有一定的基础,但对地震、渗流、应力和变形耦合作用下黄土围岩隧道的动力响应和动力稳定研究尚未见相关报导,故本项目通过理论分析、数值仿真、现场实验和振动台模型试验相结合的方法,拟针对Q2和Q3黄土隧道,考虑浅埋和深埋两种情况,进行断面型式的优化、多场耦合地震响应和动力稳定分析、多场耦合动力试验等方面的研究,修正已获得的动力有限元强度折减法和动力有限元静力强度折减法,确定多场耦合情况下的最优断面型式,提出地震、渗流、应力和变形耦合作用下黄土围岩隧道结构动力响应和动力稳定分析的本构关系和分析模型,揭示地震-应力、地震-渗流、地震-变形、地震-应力-渗流、地震-应力-变形、地震-应力-渗流-变形作用下的耦合响应规律和稳定规律,从而为以后黄土隧道结构的设计计算提供参考。【英文摘要】Withtherapiddevelopmentofengineeringconstructionandthegreatwesterndevelopment,loesstunnelhasbecomeanimportantpartofthesoiltunnel.Therehasbeenacertainfoundationabouttheanti-seismicandshockabsorptionofloesstunnelintheexistingliterature,butthestudyaboutthedynamicresponseanddynamicstabilityofloesstunnelhasnotbeenreportedundercouplingactionofearthquake,seepage,stressanddisplacement,sothroughtheoreticalanalysis,numericalsimulation,fieldtestandshakingtablemodeltest,aimingatQ2andQ3loesstunnelandconsideringtwocasesthatareshallowburiedtunnelanddeepburiedtunnel,sectionconfigurationoptimization,seismicresponseanddynamicstability,dynamictestingandsoonundermultifieldcouplingareproceeded.Theacquireddynamicfiniteelementstrengthreductionmethodanddynamicfiniteelementstaticstrengthmethodisrevised,theoptimalsectiontypeinthecaseofmultifieldcouplingisdetermined,theconstitutiverelationandtheanalysismodelofdynamicresponseanddynamicstabilityaboutloesstunnelstructureunderthecouplingactionofearthquake,seepage,stressanddisplacementisputforward,theresponseruleandstableruleundertheactionofearthquake-stress,earthquake-seepage,earthquake-displacement,earthquake-stress-seepage,earthquake-stress-displacement,andearthquake-stress-seepage-displacementarerevealed,thusthereferenceaboutthedesignandcalculationofloesstunnelisprovidedinthefuture.
Subtype面上项目
Project Source国家自然科学基金
2015-01
End Date2018-12
MOST Discipline Catalogue11 - 工程与技术 ; 1105 - 建筑环境与结构工程
Host Institution兰州理工大学
Project Funding820000.0
CountryCN
Language中文
Document Type项目
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64737
Collection兰州理工大学
Recommended Citation
GB/T 7714
程选生.黄土围岩隧道结构的多场耦合地震响应及动力稳定分析.2015.
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