This study tried to explore the ground movement induced by triple stacked tunneling(TST)with different construction sequences.A case study in Tianjin,China was used to investigate the ground movement during the TST(upper tunneling(UT)).For this,a modified Peck formula was proposed to predict the surface settlement induced by TST.Next,three sets of finite element analyses(FEA)were used to compare the effects of construction sequences(i.e.UT,middle tunneling(MT),and lower tunneling(LT))on vertical and lateral ground displacements.The results of Tianjin case and UT reveal that compared to a Gaussian distribution for a single tunnel,the surface settlement curve of triple stacked tunnels is a bimodal distribution.It seems that the proposed modified Peck formula can effectively predict the surface settlement induced by TST.The results of the three sets of FEA demonstrate that the construction sequence has a significant influence on the ground movement.Among the three con-struction sequences,the largest lateral displacement is observed in the MT and the smallest one in UT.The existing tunnel has an inhibitory effect on the vertical displacement.The maximum value of the lateral displacement occurs at the depth of the new tunnel in each construction sequence.

School of Civil Engineering,Tianjin University,Tianjin,300350,China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu,610059,China;Department of Civil and Environmental Engineering,National University of Singapore,117576,Singapore;Key Laboratory of Coast Civil Structure Safety of Ministry of Education,Tianjin University,Tianjin,300350,China;Key Laboratory of Earthquake Engineering Simulation and Seismic Resilience of China Earthquake Administration,Tianjin University,Tianjin,300350,China;State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin,300350,China

[1]Yao Hu;Huayang Lei;Gang Zheng;Liang Shi;Tianqi Zhang;Zhichao Shen;Rui Jia-.Ground movement induced by triple stacked tunneling with different construction sequences)[J].岩石力学与岩土工程学报（英文版）,2022(05):1433-1446

Ground,movement,induced,by,triple,stacked,tunneling,different,construction,sequences,This,study,tried,explore,ground,TST,case,Tianjin,China,was,used,investigate,during,upper,UT,For,this,modified,Peck,formula,proposed,predict,surface,settlement,Next,three,sets,finite,element,analyses,FEA,were,effects,middle,MT,lower,LT,vertical,lateral,displacements,results,reveal,that,compared,Gaussian,distribution,single,curve,tunnels,bimodal,It,seems,effectively,demonstrate,has,significant,influence,Among,largest,observed,smallest,one,existing,inhibitory,maximum,value,occurs,depth,new,each

0.43135