Influence of dredging on the foundation deformation of antique stone bridge built on soft ground and its mechanistic analysis

• Published in: 地质科技通报 Vol. 42; no. 5; pp. 61 - 69
• Main Authors: Yipeng Li, Shuzhi Ma, Hongbiao Jia, Xuan Li
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Bulletin of Geological Science and Technology 01.09.2023
• Subjects: antique stone bridge; dredging; ground deformation; numerical simulation; soft ground
• ISSN: 2096-8523
• DOI: 10.19509/j.cnki.dzkq.2022.0168

Objective The great demand for urban landscape improvement and reconstruction has required increasing dredging practices for waterfront buildings, particularly antique buildings. To effectively protect such antique buildings, the influence of dredging on the ground deformation of antique buildings needs to be carefully considered in the dredging operations. Methods To obtain a better understanding of the effect of dredging activities on antique buildings, the influence of dredging depth, dredging slope shoulder width and dredging slope ratio on the displacement and stress distribution of an antique stone bridge on soft ground via a three-dimensional model of the bridge body and its ground strata was studied in this paper. Based on the calculated results, mechanistic explanations of dredging on the ground deformation of antique stone bridges were proposed. Results The simulated results show the following: ① Dredging effects on the antique stone bridge mainly appeared as giving rise to the displacement of the b