Research on the displacement change of construction enclosure system of deep foundation

By analyzing the monitoring data of excavation foundation, maximum lateral displacement depth and top vertical retaining wall, column are studied. Research indicates that 3rd power polynomial curve can better fit change law deformation wall at each point；the fourth support demolition has great influence on wall. The third layer greatly increased After second is removed, to negative. gradually decreases until becomes smooth after first removed. deep should be paid attention internal upward from removal support.