The Study of Deformation Law of a Super Deep Foundation Pit in the Process of Dismantling the Inner Support

Abstract:

Dismantling the inner support of deep foundation pit is a risk point.It is of great importance to guarantee the safety of foundation pit when removing the inner support, and the deformation monitoring and analysis in the process of dismantling inner support is crucial. In this paper, a super deep foundation pit engineering as the research background.Through monitoring and analyzing the law of a deep horizontal displacement of the supporting structure,ground settlement, vertical settlement and axial force of support in the process of support demolition,which can be obtained that: the settlement of surface ground around the foundation shows spatial and temporal clearly and the distribution of deep horizontal displacement of supporting structure is similar to the parabolic which the maximum point constant upward shift with supporting continuous removed.Soil pressure of supporting shared with support removing process is changing, and the earth pressures support sharing is increasing. From the monitoring results, the demolition scheme is reasonable and effective and meets the requirements of design and environment.

• Periodical: Applied Mechanics and Materials (Volumes 638-640)
• Pages: 614-619
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.638-640.614
• Online since: September 2014
• Authors: Bo Liu, Qing Nan Liu, Yi Yan Zhao, Bing Hui Chen*
• Keywords: Deformation, Field Monitoring, Inner Support Demolition, Super Deep Pit

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