1 / 8

Soil Mechanics Third year students 2017-2018

Soil Mechanics Third year students 2017-2018. Dr . Ahmed Mohammed Hasan PhD in Geotechnical Engineering. The determination of Pre-consolidation pressure.

cgiles
Download Presentation

Soil Mechanics Third year students 2017-2018

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Soil MechanicsThird year students2017-2018 Dr . Ahmed Mohammed Hasan PhD in Geotechnical Engineering

  2. The determination of Pre-consolidation pressure

  3. Casagrande (1936) suggested a simple graphic construction to determine the preconsolidation pressure (σc’) from the laboratory e-log σ’ plot. The procedure is as follows: 1- By visual observation, establish point A, at which the e-log σ’ plot has a minimum radius of curvature. 2- Draw a tangential line AB at point A. 3- Draw the horizontal line AC at A. 4- Draw the line AD, which is the bisector of the angle BAC. 5- Project the straight line portion GH of the e-log σ’ plot back to intersect line AD at F. The abscissa of point F is the preconsolidation pressure (σc’)

  4. Estimating the preconsolidation pressure e A B log (s’) Casagrande’s method

  5. Estimating the preconsolidation pressure e C A B log (s’) Casagrande’s method

  6. Estimating the preconsolidation pressure e C A D B log (s’) Casagrande’s method

  7. Estimating the preconsolidation pressure H e F C A D G B log (s’) Casagrande’s method

  8. Estimating the preconsolidation pressure H e F C A D G B s’c log (s’) Casagrande’s method

More Related