Passive soil pressure above a retaining wall rock socket
Passive soil pressure above a retaining wall rock socket
(OP)
I am doing a redesign on a soldier pile retaining wall due to additional soil information encountered during construction. Rock was discovered between 7' to 16' below the front finished grade. I know that the wall needs to deflect to attain the passive soil condition. But at the rock there is no deflection. I am wondering if anyone has any ideas on how much passive soil pressure, if any, I can use above the rock.
The piles have already been delevered to the job site and if I use no passive soil pressure the piles are underdesigned. I am looking into using cover plates on the piles if I need to.
Thanks in advance for any help on this.
Scott
The piles have already been delevered to the job site and if I use no passive soil pressure the piles are underdesigned. I am looking into using cover plates on the piles if I need to.
Thanks in advance for any help on this.
Scott





RE: Passive soil pressure above a retaining wall rock socket
Cover plates may be the simpest answer.
RE: Passive soil pressure above a retaining wall rock socket
I will check into battering the pile, although I don't think it will provide enough resistance to prevent me from using cover plates. I have already taken out the possibility of tiebacks because the area behind the wall is a landfill. Otherwise, that would have been a more cost effective solution.
Scott
RE: Passive soil pressure above a retaining wall rock socket
RE: Passive soil pressure above a retaining wall rock socket
The RQD's are fairly low. They range from 0 to 68.
We have decided to increase the pile section to account for the increased moment due to the fixed pile at the rock. I then designed the rock socket assuming a course gravel instead of the rock. This should provide me with a conservative design both with the rock socket design and the pile design.
Scott