Pile not embedded in rock and is under lateral load?
Pile not embedded in rock and is under lateral load?
(OP)
I was just curious
You have a long pile that goes all the way down through very weak layers of soil only to touch the first firm layer available, usually rock.
And for some reason no penetration is made into rock.
So you have bearing capacity. Fine.
But even if piles are connected to each other at the top, by a very rigid cap, will you have lateral resistance in the piles.
Nice summer holidays pals
IJR
You have a long pile that goes all the way down through very weak layers of soil only to touch the first firm layer available, usually rock.
And for some reason no penetration is made into rock.
So you have bearing capacity. Fine.
But even if piles are connected to each other at the top, by a very rigid cap, will you have lateral resistance in the piles.
Nice summer holidays pals
IJR





RE: Pile not embedded in rock and is under lateral load?
If you looked at each pile as if it were a narrow retaining wall, you would see the relevance of active and passive soil pressures for the soil/structure interaction, thus you can compute the fixity of the pile and its ability to resist lateral loading.
RE: Pile not embedded in rock and is under lateral load?
What if passive resistance is too small, given say available soil being say, very very weak? shall we then rely on the friction developed by the pile-to-rock contact for lateral resistance, given large bearing force where available?.
Keep in sacred health.
respects
IJR
RE: Pile not embedded in rock and is under lateral load?
RE: Pile not embedded in rock and is under lateral load?
Regarding driven piling (closed ended pipe, displacement type) placed in soft soils with 1 to 3 feet of socket for 30 to 60 feet of total pile length. SPT counts of less than 3 blows/12 inches. The actual realized lateral resistance has consistantly been more than assumed WHEN THE PILES ARE TIED AS A GROUP. This also matches the tales I heard regarding bridge construction in Viet Nam, 30 years ago.
I have also seen significant lateral capacity increases when a structural fill in placed beneath the surface slabs on grade.
Carefull review of existing structures, especially older buildings can be very informative.
RE: Pile not embedded in rock and is under lateral load?