Analysis of Diaphragm Wall Deflection Induced by Excavation Based on Machine Learning

Table 4

Construction procedures in Area I.

Stage	Construction details
	Area I	Area II
1	Excavate to −0.1 m	Excavate to −0.1 m
	Install concrete struts (800 × 1000) at −0.5 m	Install concrete struts (800 × 1000) at −0.5 m
2	Excavate to −4.9 m	Excavate to −6.35 m
	Install steel struts (Φ609/t = 16) at −4.4 m	Install steel struts (Φ609/t = 16) at −5.85 m
3	Excavate to −8.4 m	Excavate to −9.95 m
	Install concrete struts (1000 × 1000) at −7.9 m	Install concrete struts (1000 × 1000) at −9.45 m
4	Excavate to −13.76 m	Excavate to −13.75 m
	Install concrete struts (1200 × 1000) at −13.26 m	Install steel struts (Φ609/t = 16 mm) at −13.25 m
5	Excavate to −17.76 m	Excavate to −16.54 m
	Install double steel struts (Φ609/t = 16) at −17.26 m	Install concrete struts (1200 × 1000) at −16.04 m
6	Excavate to −21.26 m	Excavate to −21.26 m
	Install steel struts (Φ609/t = 16) at −20.76 m	Install steel struts (Φ609/t = 16 mm) at −20.76 m
7	Excavate to −25.70 m	Excavate to −25.60 m
	Pour bottom slab	Pour bottom slab