Research on Deformation Law of Deep Foundation Pit of Station in Core Region of Saturated Soft Loess Based on Monitoring

Table 3

Main analysis conditions of foundation pit.

Working condition	Content	Duration/day
S1	Install the second steel support	1
S2	Excavate to 17 m, install the third steel support	3
S3	Excavate to 23 m, install the 4^th steel support	4
S4	Excavate to 27 m, install the 5^th steel support	3
S5	Excavation to 30.45 m	2
S6	Start gushing water-gushing solution	6
S7	Slab pouring	11
S8	Demolition of the 5th steel support	2
S9	Negative second floor inverted support construction	13
S10	4th steel support removal	2
S11	Construction of sidewall and floor frame beam on the second floor	18
S12	Removal of the 3rd steel support	2
S13	Construction of frame beams on the sidewall of the negative first floor	10
S14	Demolition of the second and first steel supports	2