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    Performance of Buried Tunnels Subjected to Surface Blast Incorporating Fluid-Structure Interaction

    Source: Journal of Performance of Constructed Facilities:;2015:;Volume ( 029 ):;issue: 003
    Author:
    Sivalingam Koneshwaran
    ,
    David P. Thambiratnam
    ,
    Chaminda Gallage
    DOI: 10.1061/(ASCE)CF.1943-5509.0000585
    Publisher: American Society of Civil Engineers
    Abstract: This paper uses finite-element techniques to investigate the performance of buried tunnels subjected to surface blasts incorporating fully coupled fluid-structure interaction and appropriate material models that simulate strain-rate effects. Modeling techniques are first validated against existing experimental results and then used to treat the blast-induced shock-wave propagation and tunnel response in dry and saturated sands. Results show that the tunnel buried in saturated sand responds earlier than that in dry sand. Tunnel deformations decrease with distance from the explosive in both sands, as expected. In the vicinity of the explosive, the tunnel buried in saturated sand suffered permanent deformation in both axial and circumferential directions, whereas the tunnel buried in dry sand recovered from most of the axial deformation. Overall, response of the tunnel in saturated sand is more severe for a given blast event and shows the detrimental effect of pore water on the blast response of buried tunnels. The validated modeling techniques developed in this paper can be used to investigate the blast response of tunnels buried in dry and saturated sands.
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      Performance of Buried Tunnels Subjected to Surface Blast Incorporating Fluid-Structure Interaction

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    http://yetl.yabesh.ir/yetl1/handle/yetl/78958
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    contributor authorSivalingam Koneshwaran
    contributor authorDavid P. Thambiratnam
    contributor authorChaminda Gallage
    date accessioned2017-05-08T22:22:22Z
    date available2017-05-08T22:22:22Z
    date copyrightJune 2015
    date issued2015
    identifier other43575493.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/78958
    description abstractThis paper uses finite-element techniques to investigate the performance of buried tunnels subjected to surface blasts incorporating fully coupled fluid-structure interaction and appropriate material models that simulate strain-rate effects. Modeling techniques are first validated against existing experimental results and then used to treat the blast-induced shock-wave propagation and tunnel response in dry and saturated sands. Results show that the tunnel buried in saturated sand responds earlier than that in dry sand. Tunnel deformations decrease with distance from the explosive in both sands, as expected. In the vicinity of the explosive, the tunnel buried in saturated sand suffered permanent deformation in both axial and circumferential directions, whereas the tunnel buried in dry sand recovered from most of the axial deformation. Overall, response of the tunnel in saturated sand is more severe for a given blast event and shows the detrimental effect of pore water on the blast response of buried tunnels. The validated modeling techniques developed in this paper can be used to investigate the blast response of tunnels buried in dry and saturated sands.
    publisherAmerican Society of Civil Engineers
    titlePerformance of Buried Tunnels Subjected to Surface Blast Incorporating Fluid-Structure Interaction
    typeJournal Paper
    journal volume29
    journal issue3
    journal titleJournal of Performance of Constructed Facilities
    identifier doi10.1061/(ASCE)CF.1943-5509.0000585
    treeJournal of Performance of Constructed Facilities:;2015:;Volume ( 029 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian