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    Partial Loss of Support and Frame‐Soil Interaction

    Source: Journal of Structural Engineering:;1987:;Volume ( 113 ):;issue: 012
    Author:
    Mehter M. Allam
    ,
    Kanakapura S. Subba Rao
    ,
    B. V. V. Subramanya
    DOI: 10.1061/(ASCE)0733-9445(1987)113:12(2488)
    Publisher: American Society of Civil Engineers
    Abstract: An interaction analysis has been conducted to study the effects of a local loss of support beneath the beam footing of a two‐bay plane frame. The results of the study indicate that the magnitude of increase in the bending moment and axial force in the structure due to the presence of a void are dependent, not only on the extent of support loss, but also on the relative stiffnesses between foundation beam and soil, and between superstructure and soil. The increase in bending moment even for a void span of 1/12 of the foundation beam length can become so significant as to exceed the safety provisions. The study shows that the effect of a void on the superstructure moments can be greatly minimized by a combination of rigid foundation and flexible superstructure.
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      Partial Loss of Support and Frame‐Soil Interaction

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    contributor authorMehter M. Allam
    contributor authorKanakapura S. Subba Rao
    contributor authorB. V. V. Subramanya
    date accessioned2017-05-08T20:52:18Z
    date available2017-05-08T20:52:18Z
    date copyrightDecember 1987
    date issued1987
    identifier other%28asce%290733-9445%281987%29113%3A12%282488%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/29974
    description abstractAn interaction analysis has been conducted to study the effects of a local loss of support beneath the beam footing of a two‐bay plane frame. The results of the study indicate that the magnitude of increase in the bending moment and axial force in the structure due to the presence of a void are dependent, not only on the extent of support loss, but also on the relative stiffnesses between foundation beam and soil, and between superstructure and soil. The increase in bending moment even for a void span of 1/12 of the foundation beam length can become so significant as to exceed the safety provisions. The study shows that the effect of a void on the superstructure moments can be greatly minimized by a combination of rigid foundation and flexible superstructure.
    publisherAmerican Society of Civil Engineers
    titlePartial Loss of Support and Frame‐Soil Interaction
    typeJournal Paper
    journal volume113
    journal issue12
    journal titleJournal of Structural Engineering
    identifier doi10.1061/(ASCE)0733-9445(1987)113:12(2488)
    treeJournal of Structural Engineering:;1987:;Volume ( 113 ):;issue: 012
    contenttypeFulltext
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