Discussion of "Energy-Based Analysis of Laterally Loaded Caissons with Large Diameters under Small-Strain Conditions".

(4) and (5) along with the differential equations of I SB z sb i and I SB x sb i as follows: (7) HT <math display="block" overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mstyle displaystyle="true" scriptlevel="0"><mrow><mfrac><mrow><msup><mi>d</mi><mn>2</mn></msup><msub><mi> </mi><mi>z</mi></msub></mrow><mrow><mi>d</mi><msup><mi>z</mi><mn>2</mn></msup></mrow></mfrac></mrow><mo>-</mo><msub><mi> </mi><mn>1</mn></msub><msub><mi> </mi><mi>z</mi></msub><mo>-</mo><msub><mi> </mi><mn>2</mn></msub><mstyle displaystyle="true" scriptlevel="0"><mrow><mfrac><mrow><mi>d</mi><msub><mi> </mi><mi>x</mi></msub></mrow><mrow><mi>d</mi><mi>z</mi></mrow></mfrac></mrow><mo>=</mo><mn>0</mn></mstyle></mstyle></math> ht (8) HT <math display="block" overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mstyle displaystyle="true" scriptlevel="0"><mrow><mfrac><mrow><msup><mi>d</mi><mn>2</mn></msup><msub><mi> </mi><mi>x</mi></msub></mrow><mrow><mi>d</mi><msup><mi>z</mi><mn>2</mn></msup></mrow></mfrac></mrow><mo>-</mo><msub><mi> </mi><mn>3</mn></msub><msub><mi> </mi><mi>x</mi></msub><mo>-</mo><msub><mi> </mi><mn>4</mn></msub><mstyle displaystyle="true" scriptlevel="0"><mrow><mfrac><mrow><mi>d</mi><msub><mi> </mi><mi>z</mi></msub></mrow><mrow><mi>d</mi><mi>z</mi></mrow></mfrac></mrow><mo>=</mo><mn>0</mn></mstyle></mstyle></math> ht where the parameters I i SB 1 sb - I i SB 4 sb describe the rates of the variations of I u SB sz sb i and I u SB sx sb i with depth. [Extracted from the article]