Journal of Shandong University(Engineering Science) ›› 2026, Vol. 56 ›› Issue (3): 15-24.doi: 10.6040/j.issn.1672-3961.0.2024.201

• 土木工程 • Previous Articles     Next Articles

Research progress of stability analysis methods for excavations in clay

HUANG Maosong1,2, TAN Tingzhen1,2, FU Chenzhi1,2, LIU Yihui1,2   

  1. HUANG Maosong1, 2, TAN Tingzhen1, 2, FU Chenzhi1, 2, LIU Yihui1, 2(1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China;
    2. College of Civil Engineering, Tongji University, Shanghai 200092, China
  • Published:2026-06-09

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Abstract: Focusing on key issues in the stability analysis of excavations in clay, numerical simulations and theoretical methods for basal heave stability were briefly reviewed, and recent advances in upper-bound limit analysis and limit-equilibrium methods were introduced. Considering the fact that the embedded wall could be rigid or flexible in engineering, two series of upper-bound mechanisms were proposed and verified by comparison with numerical simulation methods. In addition, this paper systematically clarified the problems existing in the circular sliding method adopted by domestic codes and proposed an improved circular sliding method. The proposed circular sliding method considered the circular radius and ultimate bending moment. The shortcomings of the checking method for stability against inrush in domestic codes were explained in detail, and corresponding improved checking methods were introduced. These methods could provide theoretical references for the revision of current excavation stability codes.

Key words: excavation in clay, upper bound limit analysis, circular sliding method, confined water, stability analysis

CLC Number: 

  • TU432
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