Underground storage tank blowout analysis:Stability prediction using an artificial neural network  

作　　者：Nhat Tan Duong Van Qui Lai Jim Shiau Rungkhun Banyong Suraparb Keawsawasvong 

机构地区：[1]Faculty of Civil Engineering,Ho Chi Minh City University of Technology(HCMUT),VNU-HCM,Ho Chi Minh City,Vietnam [2]School of Engineering,University of Southern Queensland,Toowoomba 4350,QLD,Australia [3]Research Unit in Sciences and Innovative Technologies for Civil Engineering Infrastructures,Department of Civil Engineering,Thammasat School of Engineering,Thammasat University,Pathumthani 12120,Thailand

出　　处：《Journal of Safety Science and Resilience》2023年第4期366-379,共14页安全科学与韧性（英文）

摘　　要：Most geotechnical stability research is linked to“active”failures,in which soil instability occurs due to soil self-weight and external surcharge applications.In contrast,research on passive failure is not common,as it is predominately caused by external loads that act against the soil self-weight.An earlier active trapdoor stability investigation using the Terzaghi’s three stability factor approach was shown to be a feasible method for evaluating cohesive-frictional soil stability.Therefore,this technical note aims to expand“active”trapdoor research to assess drained circular trapdoor passive stability(blowout condition)in cohesive-frictional soil under axisymmetric conditions.Using numerical finite element limit analysis(FELA)simulations,soil cohesion,surcharge,and soil unit weight effects are considered using three stability factors(Fc,Fs,and Fγ),which are all associated with the cover-depth ratio and soil internal friction angle.Both upper-bound(UB)and lower-bound(LB)results are presented in design charts and tables,and the large dataset is further studied using an artificial neural network(ANN)as a predictive model to produce accurate design equations.The proposed passive trapdoor problem under axisymmetric conditions is significant when considering soil blowout stability owing to faulty underground storage tanks or pipelines with high internal pressures.

关 键 词：BLOWOUT Passive stability TRAPDOOR Stability factors Limit analysis 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]