personally it is the bored piles with cappingbeam and lagging wall. PDS?>Jg(
the main reason for this collapse may be the shortage of bending moment resistance of the wall. the surrounding building is the critical origin of the large lateral force. [ut[W9
from the photo it can be seen that the site soil is not so bad. X.V4YmZ- ;
measures may be : soil nailing between the piles to increase the wholly stability of the wall; Js&.p9S2
increase the embedment (if the collapse came from overturning of the wall); prop up the wall with berms or inclined wall; or tie back from the back of the wall; / bF>cpM
meanwhile, monitoring should be carried out very carefully.
