The rock layer at the end of one pile was damaged by punching shear; the bottom sediment of one pile was too thick, and the concrete of one pile body contained slag and was judged as a broken pile.
One pile end rock layer contained weak layers that were cut and damaged by the shear, and one pile bottom scum was too thick and one pile concrete scum was convicted as a broken pile.
One pile end stratum contains weak layer, which is destroyed by punching shear; one pile bottom sediment is too thick, and the other pile body concrete contains slag, which is judged as broken pile.<br>