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- W2058551903 abstract "The behavior of a 1.5-m (5-ft) diameter reinforced concrete caisson socketed in a clayshale and subjected to lateral loading was investigated. The study involved field testing and computer analysis. In the field testing, caisson deflections and strains of reinforcing steel as well as concrete were monitored. From these strain and deflection data, the p-y curves at top, mid-height, and bottom of the clayshale stratum were obtained. The computer analysis was performed using Ensoft. COM624 software to generate the predicted caisson deflection profiles and p-y curves. The results of computer analysis were compared with the results derived from the field test data. It was concluded that Reese's method of analysis for caissons in weak rock can render reasonable results for the clayshale investigated in this study. However, its application to very weak and moderately weak rock requires some special considerations. For material classified as very weak rock, strength reduction caused by load-induced fracturing has very little impact on the accurate determination of p-y curves. For rock strata displaying a wide range of rock quality, a modified relationship between RQD vs. strength reduction factor is proposed. For very weak and moderately weak rock, the correlations based on the RMR system render more reliable input values of elastic modulus than RQD correlations. Bending stiffness profiles obtained from computer analysis using pre-construction material properties are adequate only for predicting deflection when the shaft bending moments are equal to or greater than the ultimate values." @default.
- W2058551903 created "2016-06-24" @default.
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- W2058551903 date "2000-07-17" @default.
- W2058551903 modified "2023-09-24" @default.
- W2058551903 title "Behavior of Laterally Loaded Caissons in Weak Rock" @default.
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- W2058551903 doi "https://doi.org/10.1061/40511(288)17" @default.
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