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Theoretical Equations of Vertical and Radial Consolidation by Equating Degrees of Consolidation by Settlement Analysis and Dissipation of Pore Pressure |
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| Authors: | Sudhir Kumar Tewatia Asuri Sridharan Mangu Singh Sunanda Rath |
| Institution: | 1. Central Soil and Materials Research Station, Ministry of Water Resources, Outer Ring Road, Hauz Khas, New Delhi, 110016, India 2. Department of Civil Engineering, Indian Institute of Science, Bangalore, 560012, India 3. Delhi Metro Rail Corporation Ltd., Metro Bhavan, Barakhamba Road, New Delhi, 110001, India 4. Faculty of Engineering, JB Knowledge Park, Faridabad, India |
| Abstract: | Degree of consolidation, U, is defined in two ways: (1) by settlement analysis and (2) by dissipation of pore pressure. Equations of vertical and radial consolidations are derived by equating the above two U. The new equations are compared with the existing equations of vertical and radial consolidations. It is shown that new equation of radial consolidation is exactly same as Barron’s equation of equal strain radial consolidation while in case of vertical consolidation it is similar to later part of Terzaghi’s equation of vertical consolidation. A few possible reasons and advantages of comparison are given. The theory of rapid loading methods is based on the equality of these two degrees of consolidations. It is concluded that in rapid loading methods the next load increment can be applied at any time in radial consolidation once the effects of initial compression are over. However, in vertical consolidation it can be applied only after 60% consolidation. |
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