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Estimation of Liquefaction-Induced Manhole Uplift Displacements and Trench-Backfill Settlements
A simple method to predict the uplift displacement of a manhole and trench-backfill settlement due to liquefaction is proposed. The conventional equilibrium of vertical forces acting on a manhole is solely a function of such forces acting and is incapable of predicting the uplift displacement. In this paper, the proposed method adds variables including the uplift displacement, , and settlements of backfill, , under the condition that the volume of an uplifted portion of a manhole is equal to a settled volume of a trench-backfill. To date, the method is verified through comparison with the results of 1-G and centrifuge model tests. A new safety factor, which takes into account the amount of manhole uplift and backfill settlement, is also derived.
Estimation of Liquefaction-Induced Manhole Uplift Displacements and Trench-Backfill Settlements
A simple method to predict the uplift displacement of a manhole and trench-backfill settlement due to liquefaction is proposed. The conventional equilibrium of vertical forces acting on a manhole is solely a function of such forces acting and is incapable of predicting the uplift displacement. In this paper, the proposed method adds variables including the uplift displacement, , and settlements of backfill, , under the condition that the volume of an uplifted portion of a manhole is equal to a settled volume of a trench-backfill. To date, the method is verified through comparison with the results of 1-G and centrifuge model tests. A new safety factor, which takes into account the amount of manhole uplift and backfill settlement, is also derived.
Estimation of Liquefaction-Induced Manhole Uplift Displacements and Trench-Backfill Settlements
Tobita, Tetsuo (author) / Kang, Gi-Chun (author) / Iai, Susumu (author)
Journal of Geotechnical and Geoenvironmental Engineering ; 138 ; 491-499
2011-08-17
92012-01-01 pages
Article (Journal)
Electronic Resource
English
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