The Calculation of Incremental Method Based on Earth Pressure Modification

Abstract:

Incremental method, as one of the practical calculation methods in retaining structure design of foundation pit, has been widely used. When incremental method is applied, the earth pressure, acting on the retaining structure on each incremental step, is considered as static earth pressure. Actually, the state of earth pressure changes constantly with the increase of soil displacement in the process of excavation. This paper introduces the relation of displacement and earth pressure based on the soil stress-strain state, and makes corrections for the earth pressure of the incremental method. By comparing with the measured data of the engineering, the calculation results, which consider earth pressure modification, are in good line with the practical engineering condition. The method in this paper can provide certain reference for related engineering design.

• Periodical: Applied Mechanics and Materials (Volumes 256-259)
• Pages: 507-513
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.256-259.507
• Online since: December 2012
• Authors: Shou Ze Cheng, Wei Hua Wang, Chang Jie Xu
• Keywords: Displacement, Foundation Pit, Incremental Method, Modified Earth Pressure

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