Slope stability of reclamation boundary

[vinothsekar]

Hi folks,

we are doing the reclamation in one of our projects with an area of 400m x 50m from -2m to +1m. Also, we are treating the reclamation ground with PVD to decrease the future settlement with proloading fill and the height of the fill is 5m above +1.0m to achieve the future settlement criteria less than 10cm. Below reclamation fill, the strata is consists of SILT & CLAY from -2m to -33m with N value 1 to 5 and Cu is 5kpa to 15kpa. The entire area is proposed to do PVD to decrease the future settlement of the building and utilities.

Now, if we install a verticle wall (sheet pile) to the protect the shore then lateral diffection of the sheet pile is very high due to soft soil during the Ground improvement.

Can anyone suggest the suitable solution in the case to avoid the high deflection of sheet pile.

Thanks.


Vinothkumar S
Geotechnical Engineer

 

[oldestguy]

Take at look at USA Corps of Engineer projects for piers and walls using circular sheetpile sections tied together with sheet piles. Not cheap, but effective.

 

[vinothsekar]

I will look into it. Thank you for your reference.

Vinothkumar S
Geotechnical Engineer