Work

Shield Construction Effect on the Existing Subway Tunnel Structures and Efficiency of Grouting Reinforcement Measures: a 3D Model and a Case Study

Year: 2025

Type: article

Abstract: The impact of shield construction on existing structures is analyzed, and the effectiveness of various reinforcement measures is compared using Midas GTS NX software. The use of isolation piles and sleeve valve pipe grouting as reinforcement measures is evaluated to determine their effects on mitigating uneven settlement and horizontal displacement of existing buildings. The analysis shows that advance grouting effectively controls the settlement caused by excavation, stabilizing vertical deformation of the bottom plate to within ±1.5 mm throughout the construction phase. In contrast, in-hole compensation grouting limits this settlement to within ±1 mm. Additionally, it is noted that in the intersection area of the bottom plate, the reverse bending of the bottom longitudinal beam may result in a slight uplift.

Source: Materials Science

DOI: 10.5755/j02.ms.41087

Authors: Zhengya ZHANG, Bohao LI, Yong YAN, Jinwei FU, Hadi HAERI, Vahab SARFARAZI

Institutions: Zhengzhou Technology and Business University, North China University of Water Resources and Electric Power, Shahid Bahonar University of Kerman, Hamedan University of Technology

Language: English

Topic: Geotechnical Engineering and Analysis

Subfield: Safety, Risk, Reliability and Quality

Field: Engineering

Domain: Physical Sciences

SDGs: Sustainable cities and communities, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $539