LABORATORY INVESTIGATION ON CAISSONS-DEFORMATIONS AND VERTICAL LOAD DISTRIBUTIONS

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概要

• 論文の詳細を見る

• A detailed laboratory investigation was undertaken to study the settlement and deflection behavior of open ended caissons on sandy soil. Effect of embedment depth, diameter, and point of lateral load application were studied due to combination of vertical and lateral loads. Results indicate that load shared by the skin friction is greater than the base resistance for higher embedment depth / diameter ratios. Hence, the long-term safety of the caissons depends on the unused part of the tip loads, as the skin friction is mobilized at low settlements. Load-settlement curves indicate that the soil behaves linearly elastic up to very small settlements and deflections (2 to 4% of diameter). For better comparison with numerical methods, elasto-plastic constitutive laws are a must. Observed results agree well with those available in the literature. It was found that neglecting the base resistance is uneconomical for caissons with predominantly vertical loads, but it is recommended in estimating ultimate lateral load capacity. These results also indicate that small scale laboratory tests conducted in controlled conditions allow rapid and reliable information on field performance of caissons.

• 社団法人地盤工学会の論文
• 1997-06-15

著者

• Alampalli Sreenivas

  Structures Research Transportation R & D Bureau Nys Dot

• PEDDIBOTLA VENKATANARAYANA

  Department of Civil Engineering, Indian Institute of Technology

• Peddibotla Venkatanarayana

  Department Of Civil Engineering Indian Institute Of Technology

関連論文

• LABORATORY INVESTIGATION ON CAISSONS-DEFORMATIONS AND VERTICAL LOAD DISTRIBUTIONS

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