Study on the safety impact of subway shafts on existing building complexes based on numerical modeling and simulation —A case study of shaft No. 1 at Jiniantang Station of Guangzhou Metro Line 13

Ke Ji; Tian Su; Fa Liang Zhang; Jun Zhang; De Wen Liu; Li Juan Niu; Qing Fei Zhou

Research Article

Recieved:

28/09/2025

Accepted:

04/11/2025

Page:

–

doi:

http://dx.doi.org/10.17515/resm2025-1200st0928rs

Views:

Study on the safety impact of subway shafts on existing building complexes based on numerical modeling and simulation —A case study of shaft No. 1 at Jiniantang Station of Guangzhou Metro Line 13

Ke Ji ¹, Tian Su², Fa Liang Zhang¹, Jun Zhang³, De Wen Liu⁴, Li Juan Niu ⁵, Qing Fei Zhou¹

¹China Railway No.4 Engineering Group Co., Ltd, Hefei, Anhui Province, 230000, China
²Shandong University of Technology Department of Civil Engineering, School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo, Shandong, 255000, China
³Shandong Key Laboratory of Eco-Environmental Science for Yellow River Delta, Shandong University of Aeronautics, Binzhou, Shandong, 256600, China
⁴School of Civil Engineering, Southwest Forestry University, Kunming City, Yunnan Province，650224, China
⁵Shaanxi Railway Institute, Weinan City, Shaanxi Province, China, Postcode,714000, China

Abstract

To address structural risks from metro shaft and cross-passage construction in dense urban areas, this study focuses on Guangzhou Metro Line 13’s Jiniantang Station project, employing 3D finite element simulation (Midas Gen 2022, Mohr-Coulomb model) to analyze impacts on adjacent shallow/pile-foundation buildings. We integrated geological conditions, phased excavation, timely support, and conducted soil parameter sensitivity analysis. Results showed controllable displacements: maximum vertical displacement and differential settlement for shallow-foundation buildings (closest at 8.4m) were 3.4 mm and 0.91 mm, and for pile-foundation high-rises (23.0m away) were 0.3 mm and 0.06 mm, all below code thresholds. On-site monitoring verified simulation reliability. This study demonstrates 3D simulation’s effectiveness in predicting structural responses, and the proposed excavation and monitoring strategies offer references for similar urban metro projects.