Geo-Trends Review

Dear colleagues

I have encountered a problem in modeling a sand bed with a granular cushion on it in Plaxis 2D V20 using the unit cell approach. As the cushion thickness increases, the load capacity decreases. Is it possible to check the file?

Please let me know your Email address to send the file.

Best Regards,

I am not a geotechnical engineer, but I have a question concerning the settlement of bay bud with several feet of fill on top, and a high water table. I understand the logic concerning the long term settlement of the bay mud due to the weight of the fill, but my question is in regards to the effects of lowering of the water table in the fill. It has been described to me that by lowering the water table, the fill is now no longer bouyant and therefore heavier. This heavier weight then results in additional settlement of the fill. This does not make since to me, as the total weight on top of the bay mud is heavier with fill and water than with just fill. Am I missing something?

In addition, what happens when the water table is lowered into the bay mud?

I have a question on how to determine the coefficient of secondary compression and the intital volumetric strain rate as part of the input parameters of the Sekiguchi-Ohta viscid model. The Material Models Manual of Plaxis 2D suggests using a secondary compression index as an alternative to the above mentioned input parameters without any further informations on how to specifiy it. Unfortunately I haven't found a lot in the literature about this subject. The second question is wether it is possible or not to derive the input parameters of the Sekugichi-Ohro viscid model out of the input data set of the soft soil creep model using the soil test tool by excuting back calculations?

Thank you all in advace.

Greetings