›› 2011, Vol. 32 ›› Issue (10): 3085-3088.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Discussion of settlement-velocity ratio method for evaluating consolidation coefficient

WANG Jun-bao1, 2, LIU Xin-rong1, 2, LI Peng1, 2   

  1. 1. College of Civil Engineering, Chongqing University, Chongqing 400045, China; 2. Key Laboratory of New Technology for Construction of Cities in Mountain Area of Ministry of Education, Chongqing University, Chongqing 400045, China
  • Received:2011-01-26 Online:2011-10-10 Published:2011-10-13

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Abstract: At present, the common methods for evaluating consolidation coefficient are the logarithm of time and the square root of time methods, both of which are graphical methods. In these two methods, there are some large influences of the man-made factors during graphical construction. The relationship between settlement-velocity of arbitrary moment and settlement-velocity of next moment is developed based on the one-dimensional consolidation theory, which provides a new method for evaluating consolidation coefficient by analyzing the measured data with the least square method. Then the rationality of the new method is verified through project cases study; and the results indicate that the new method can determine the consolidation coefficient with high accuracy and convenience to use. In addition, when the new method is adopted for evaluating consolidation coefficient, the latter measured data after an hour is not necessary, which means that the process of consolidation test can be accelerated.

Key words: consolidation coefficient, settlement-velocity, ratio, calculation

CLC Number: 

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