Allowable deflection of retaining wall
Allowable deflection of retaining wall
(OP)
Hi All
I am doing preliminary design of Contiguous Bored Pile wall for Crossrail project in London.The soil stratum is 1.5-2.0m thick made ground and 20-25m thick London clay.I adopted 1050mm dia pile @1150mm spacing.The retained height varies from 6.0-8.0m.I am getting 44-50mm as short term movements and 95-100mm as long term movements.There are existing Viaduct foundations near proposed retaining wall.Are there any allowable criteria for deflection and movements of retaining walls?
I am doing preliminary design of Contiguous Bored Pile wall for Crossrail project in London.The soil stratum is 1.5-2.0m thick made ground and 20-25m thick London clay.I adopted 1050mm dia pile @1150mm spacing.The retained height varies from 6.0-8.0m.I am getting 44-50mm as short term movements and 95-100mm as long term movements.There are existing Viaduct foundations near proposed retaining wall.Are there any allowable criteria for deflection and movements of retaining walls?





RE: Allowable deflection of retaining wall
As for deflection limits, I generally work with sheet piles or H-piles. I typically try to limit deflection to 25 mm. This not any written code, but rather due to a desire to limit secondary bending (p-delta) effects which are realy not considered in most sheeting analysis methods.
RE: Allowable deflection of retaining wall
RE: Allowable deflection of retaining wall
RE: Allowable deflection of retaining wall
RE: Allowable deflection of retaining wall
RE: Allowable deflection of retaining wall
The allowable deflection depends on what it is supporting. An old brick building maybe 20mm or less.
Also why are you looking at long term deflections? Wont you have a floor slab providing permanent support?
RE: Allowable deflection of retaining wall
HTH