Segment opening calculation of shield tunnel based on double-sided elastic foundation beam when tunnel followed by well excavation

Electronic journal of geotechnical engineering

Yang Chunshan²  Chen Junsheng*¹  Mo Haihong²  Li Jinhua² 

[1] School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong, 510641, China*Corresponding Auth;School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong, 510641, China

关键词: shield tunnel;    segment opening;    double-sided elastic foundation beam;    numerical analysis;    tunnels come firstly and then working well is excavated;   

DOI  :  

来源: Oklahoma State University

【 摘 要 】

Inviewofthecharacteristicsoflongitudinaldeformationandsegmentcircumferentialopening,tunnelisregardedascontinuouslongbeamwhichlocatesinWinkerfoundation,verticaldeflectiondifferentialequationwasbuiltwhentunnelcomesfirstlyandthenworkingwellisexcavatedbasedondouble-sideelasticfoundationbeamandcorrespondingsolutionswerecalculated.Andthentheequivalentcontinuoustheorywascombinedtoobtaincalculationequationofsegmentopening,whichcanprovidebasisforsegmentopeningcalculationwhentunnelcomesfirstlyandthenworkingwellisexcavated.Comparingresultsoftheoryanalysiswithnumericalresultsindicatesthatthecalculationresultscalculatedbydouble-sideelasticfoundationbeamareconsistentwithnumericalresultsandthemethodproposedinthisworkcaneffectivelypredictsegmentopeningduringtheshieldconstructionphase.

【 授权许可】

Unknown