Investigation of Three-Dimensional Deformation Behavior due to Long and Large Excavation in Soft Clays

Table 1

Summary of construction activities.

Stage number	Activity
1	Reinforce the passive zone, install SMW, and insert H-shaped steel
2	Excavate to −1.8 m and pour the first layer of concrete internal bracing
3	Excavate to −6 m and pour the second layer of concrete internal bracing
4	Excavate to −7.9 m and pour grade beams
5	Construct basement walls, pour slab, and demolish the second internal bracing and backfill
6	Pull out the H-shaped steel, fill the interspace, and demolish the first internal bracing