Abstract
AbstractThis paper presents the failure of a retaining structure in special geologic conditions featuring a high level of groundwater and very thick sand layers in a metro station excavation in Nanchang, China. The retaining structures were composed of cast-in-place piles, three-axis mixing piles, and bislurry grout. Although much effort was expended in designing piles that would perform well in the specific geologic conditions, failure, including sand boils and ground collapse, still occurred. Remedial measures were taken to prevent further large failures and to maintain the stability of the strut systems. The reasons for the failure were investigated afterward by analyzing the monitoring data and conducting a series of field and laboratory tests on core samples of the three-axis mixing piles and bislurry locations. The bislurry grouting was unsuccessful in preventing seepage of ground water due to the low permeability of upper clay and silty sand, which became the main reason for the failure. Instead, h...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.