Abstract
This paper presents a case study to investigate the large deformation of a deep excavation supporting system closed to a railway with high embankment. The in-situ monitoring is used to determine the effects of the unsymmetrical surface loading on the support system. Meanwhile, the optimization of its design schemes is discussed by the finite element method (FEM). The monitoring results present the support system rotates away from the railway side during the excavation process. The deflection of the diaphragm walls significant affects the railway settlement especially when the maximum movement of lateral wall exceeds 21 mm. The observed maximum lateral deflection exceeded 50.9 mm, which caused considerable settlement (106.0 mm) to the nearby railway. The results of the FEM indicate that soil strengthening inside the deep excavation is an optimized scheme. It can reduce 35.8% maximum wall deflection on bias loading side so that largely control the rotate deformation of the support system, and the scheme may also reduce about 70% maximum settlement of the railway bed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
