ANCHOR BLOCK SLIDING RESISTANCE

[LOKSTR]

Can we check "Anchor block(deadman)" sliding capacity/m length by any of the following procedure?

-Depth of block below grade=H
-ht. of block=h

-soil depth above top of block=H-h


Method 1:

1. Check the passive pressure for height "h" of anchor block(triangular distribution- '0.5*Kp*gamma*h²').

2. Treat the soil above the block (H-h) as surcharge (rectangular distribution-"Kp*gamma*(H-h)*h") and add this to the above to get the total resistance.

Method2:

Same procedure as for "designing Anchor wall/slab behind sheet pile".

Which will be a better method?

Thanks,

 

[eric1037]

I usually use the first method. You can also use the friction(or adhesion) between the soil and concrete on the bottom of the block.