In coastal regions of China, extensive areas are characterized by deep and thick silty clay deposits, necessitating excavation and support during engineering construction. This study gathers excavation examples from existing literature and aims to summarize and analyze the deformation characteristics of support structures and the soil behind these structures (supporting walls) resulting from excavation. The findings demonstrate a general trend of increasing maximum lateral displacement of the supporting wall with greater excavation depth. The ratio of maximum lateral displacement to excavation depth falls within the range of 0.18% to 0.64%, while the insertion ratio spans from 0.78 to 1.23. The ratio of maximum ground settlement behind the wall to excavation depth varies between 0.28% and 0.82%. Additionally, the ratio of maximum ground settlement behind the wall to the maximum lateral displacement of the wall ranges from 0.93 to 1.81. The statistical analysis results presented here offer valuable references for the design and construction of excavations in regions characterized by deep and thick silty clay deposits. Moreover, the statistical results can serve as qualitative verification for finite element analysis in specific cases.

来源平台：PROCEEDINGS OF THE 2024 8TH INTERNATIONAL CONFERENCE ON CIVIL ARCHITECTURE AND STRUCTURAL ENGINEERING, ICCASE 2024