Analysis and Optimization of Deep Foundation Pit Design Scheme for Geotechnical Engineering in a Complex Site
This paper takes a foundation pit support project in Nanjing city as an example to improve the scheme of combining reinforced concrete cast-in-place piles with internal support.By using the Lizheng Deep Foundation Pit 7.0 software,the anti-overturning stability coefficient and overall stability coefficient of the original and improved schemes are calculated.During the construction process of the foundation pit,accurate data such as internal support axial force,support structure,and lateral and longitudinal dis-placement of columns are recorded in real time.The calculated data is compared and analyzed with the o-riginal set data.The results show that the optimized design scheme has more advantages than the original scheme in terms of construction time,surrounding network management and environmental protection,construction safety factor,economy,etc.,providing reference for the design of complex underground rock and soil foundation pits.
complex sitegeotechnical engineeringdeep foundation pit designscheme optimization
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