3D FEM Analysis of Excavation-Induced Effects on an Overlying Heritage Structure in Soft Soil

GU Zhengrui; XU Zhonghua; WANG Weidong; HU Yun

doi:10.3724/j.gyjzG25052401

Volume 55 Issue 7

Jul. 2025

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2025 > 55(7): 87-95

GU Zhengrui, XU Zhonghua, WANG Weidong, HU Yun. 3D FEM Analysis of Excavation-Induced Effects on an Overlying Heritage Structure in Soft Soil[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(7): 87-95. doi: 10.3724/j.gyjzG25052401

Citation:

GU Zhengrui, XU Zhonghua, WANG Weidong, HU Yun. 3D FEM Analysis of Excavation-Induced Effects on an Overlying Heritage Structure in Soft Soil[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(7): 87-95. doi: 10.3724/j.gyjzG25052401

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3D FEM Analysis of Excavation-Induced Effects on an Overlying Heritage Structure in Soft Soil

doi: 10.3724/j.gyjzG25052401

1. East China Architecture Design & Research Institute Co., Ltd., Shanghai 200011, China;
2. Shanghai Engineering Research Center of Safety Control for Facilities Adjacent to Deep Excavations, Shanghai 200011, China;
3. Arcplus Group PLC, Shanghai 200011, China

Received Date: 2025-05-24
Available Online: 2025-09-12

Abstract

Abstract

The Shanghai Huangpu District 160 Neighborhood Reconstruction Project involved the development of underground space beneath a historical building. It innovatively used the first support of the foundation pit as a translation platform for the historical building， with reciprocating lateral movement synchronized to the foundation pit excavation. It successfully realized the completion of foundation pit excavation while preserving the historical building directly above it. A complex three-dimensional finite element model was established， considering the interaction among the soil， foundation pit supporting structure， and the building. The HS-Small advanced constitutive model considering the small strain characteristics of soil was adopted， and reasonable calculation parameters were determined. A full-process simulation of foundation pit excavation beneath the historical building was carried out. The rationality of the analytical method was verified by comparing the calculated and measured values of foundation pit deformation. On this basis， the impact of foundation pit excavation on the overlying historical building was analyzed. The results showed that the deformation and stress of the building were controllable， ensuring its safety. It also demonstrated that a three-dimensional analysis based on the small-strain constitutive model could effectively evaluate the impact of deep excavation on the overlying building.
- underground space development beneath existing buildings,
- historic building,
- foundation pit,
- lateral movement,
- 3D finite element

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References(18)

References

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