Performance of a Large-Scale Excavation by Bottom-Up Technique in Hangzhou Soft Clay

Table 1

Construction schedule of the project.

Stage	Construction activity	Period (day/month/year)
		Zone A	Zone B	Zone C	Zone D
1	Construction of diaphragm wall	1/8/2013–10/2/2014
2	Construction of pile foundation	31/1/2014–15/7/2014
3	Excavation to 2.3 m below the ground and construction of roof slabs	5/6/2014–20/1/2015
4	Excavation to 7.7 m below the ground	20/1/2015–5/4/2015	20/1/2015–26/4/2015	20/1/2015–20/4/2015	20/1/2015–25/4/2015
5	Construction of B1 floor slabs	13/3/2015–24/4/2015	1/4/2015–15/5/2015	11/4/2015–17/5/2015	3/4/2015–14/5/2015
6	Excavation to 13.2 m below the ground	2/4/2015–15/5/2015	17/5/2015–15/6/2015	2/5/2015–20/6/2015	25/4/2015–9/6/2015
7	Construction of B2 floor slabs	3/5/2015–3/6/2015	9/6/2015–3/7/2015	28/5/2015–6/7/2015	31/5/2015–27/6/2015
8	Excavation to 22.6 m below the ground	22/5/2015–16/7/2015	3/7/2015–4/8/2015	10/6/2015–28/8/2015	13/6/2015–18/8/2015
9	Construction of B3 floor slabs	3/7/2015–8/9/2015	23/7/2015–15/8/2015	12/8/2015–10/9/2015	9/7/2015–23/8/2015
10	Construction of the slabs of excavation	28/8/2015–15/11/2015