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Innovative mitigation method for buried pipelines crossing faults

Innovative mitigation method for buried pipelines crossing faults

作     者:Mahdi Rojhani Majid Moradi Ali Derakhshani Mahdi Rojhani;Majid Moradi;Ali Derakhshani

作者机构:Department of Civil EngineeringFaculty of EngineeringShahed UniversityTehranIran Faculty of Civil EngineeringCollege of EngineeringUniversity of TehranTehranIran 

出 版 物:《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动(英文刊))

年 卷 期:2022年第21卷第4期

页      面:1089-1101页

核心收录:

学科分类:083305[工学-城乡生态环境与基础设施规划] 08[工学] 081403[工学-市政工程] 0814[工学-土木工程] 0833[工学-城乡规划学] 

基  金:Physical Modeling and Centrifuge Laboratory of the Soil Mechanics and Foundation Engineering Department in the School of Civil Engineering at the University of Tehran 

主  题:pipelines centrifuge modeling faulting mitigation earthquake 

摘      要:A new remediation technique is proposed to mitigate large deformations imposed on buried pipeline systems subject to permanent ground *** this technique,low-density gravel(LDG)with high porosity,such as pumice,is used as backfill in the trench containing the pipe near an area susceptible to *** countermeasure decreases soil resistance,soil-pipe interaction forces and strain on the pipe as the pipeline deformation mechanism changes to a more desirable *** polystyrene geofoam has been introduced to decrease the density of the pipeline backfill;however,LDG is more efficient regarding workability during construction,environmental effects,durability,fire safety,and cost-effectiveness.A series of centrifuge model experiments in which the pipelines were subjected to reverse faulting was conducted to evaluate the proposed *** faulting,the axial and bending strain and pipe deflection were measured.A comparison of the responses of the remediated pipeline and the pipeline without remediation indicates that the proposed technique substantially mitigates the effects of large deformation.

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