Degree of Consolidation

Degree of Consolidation

• 1.
  Consolidation Properties Submitted to ProfessorDr. Myoung Soo Won By Sanchari Halder
• 2.
  Contents › Degree ofConsolidation Isochronal Curve › Correction for Gradual Application of Load
• 3.
  Solution of 1DConsolidation v The solution yields,
• 4.
  The time factoris a non dimensional number. Because consolidation progresses by the dissipation of excess pore water pressure, the degree of consolidation at a distance z at any time t is where, uz= excess pore water pressure at time t. =
• 5.
  0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 0.0 0.2 0.40.6 0.8 1.0 Z=z/H ue=ue/ui Tv=0.05 Tv=0.15 Tv=0.20 Tv=0.30 Tv=0.40 Tv=0.50 Tv=0.60 Tv=0.70 Tv=0.80 Tv=0.90 Tv=0.10 Tv=1.40 The graphical solution of the equation, is an illustration in which the lines of equal time factor are known as Isochrones. Let us consider, Time Factor, Tv = 0.1 Z m=0 m=1 m=2 m=3 Uz 0 0.000 0.000 0.000 0.000 0.000 0.2 0.307 0.037 0.001 0.000 0.345 0.4 0.585 0.044 0.000 0.000 0.629 0.6 0.805 0.014 -0.001 0.000 0.819 0.8 0.946 -0.027 0.000 0.000 0.919 1 0.995 -0.046 0.001 0.000 0.949 1.2 0.946 -0.027 0.000 0.000 0.919 1.4 0.805 0.014 -0.001 0.000 0.819 1.6 0.585 0.044 0.000 0.000 0.629 1.8 0.307 0.037 0.001 0.000 0.345 2 0.000 0.000 0.000 0.000 0.000 = 0,1,2,3… 0.000 , 0 0.345 , 0.2 0.629 , 0.4 0.819 , 0.6 0.919 , 0.8 0.949 , 1 0.919 , 1.2 0.819 , 1.4 0.629 , 1.6 0.345 , 1.8 0.000 , 2
• 6.
  Load-Time-Settlement Graph: Settlement Time Load
• 7.
  Correction for GradualApplication of Load: Load O Settlement Loading curve Time Instanous Curve Currected Curve ½ t1 ½ t1 t1t½t P Q R S T Effective Construction Time σt σ1
• 8.
  Thank you all…