ZHONG F W, JIA P J, GUAN Z C,et al.Ground settlement calculation method for pipe-roof-supported box culvert jacking[J].Journal of Henan Polytechnic University(Natural Science) ,2026,45(4):39-48.

doi:10.16186/j.cnki.1673-9787.2025120058

Received:2025/12/19

Revised:2026/04/15

Published:2026/06/17

Ground settlement calculation method for pipe-roof-supported box culvert jacking

Zhong Fanwei1, Jia Pengjiao1, Guan Zhenchang2, Chen Binbin1, Wang Ning1, Lu Bo3

1.School of Rail Transportation， Soochow University， Suzhou  215137， Jiangsu， China;2.College of Civil Engineering， Fuzhou University， Fuzhou  350108， Fujian， China;3.School of Resources and Civil Engineering，  Northeast University， Shenyang  110819， Liaoning， China

Abstract: Objectives The pipe-roof box culvert jacking method has been widely applied in underground construction in risk-sensitive areas owing to its strong deformation-control capability and limited environmental impact. However， research on ground settlement induced by deformation of the pipe-roof structure during the jacking process remains insufficient， and current design practice still relies heavily on engineering experience， lacking systematic theoretical guidance. Therefore， this study investigates the characteristics of ground settlement induced by pipe-roof deformation during pipe-roof-supported box culvert jacking. Methods Based on a transfer-passage project at a railway station， a three-dimensional finite-element model considering the interlocking effect of male-female joints was established to systematically analyze the coupled deformation behavior of the pipe-roof structure and surrounding soil during box culvert jacking. According to the mechanical characteristics of the pipe-roof structure and the coupled deformation mechanism between the pipe-roof and soil， the pipe-roof structure was simplified as an elastic thin plate on an elastic foundation. Combined with the two-dimensional soil displacement field theory， a ground-settlement prediction model considering both pipe-roof deformation and soil–structure interaction was developed. The proposed model was further validated through numerical simulations and field measurements. Results The results indicate that： （1） the pipe-roof structure with male–female interlocking joints exhibits deformation and mechanical behaviors closer to those of an elastic thin plate in both transverse and longitudinal directions； （2） based on the deformation characteristics of the pipe-roof structure during box culvert jacking，  the contraction ratio of the pipe-roof-box culvert section was obtained， and a ground-settlement calculation method for pipe-roof-supported box culvert jacking was proposed by incorporating the two-dimensional displacement field theory； and （3） the maximum ground settlement predicted by the proposed method differed from the numerical simulation results by approximately 7%， while the maximum errors in the transverse and longitudinal directions compared with field measurements were approximately 16% and 13%， respectively. In addition， the transverse and longitudinal settlement trough profiles agreed well with both the numerical simulation and field measurement results. Conclusions The proposed ground-settlement calculation method can effectively characterize the evolution of ground settlement during box culvert jacking under pipe-roof support and can provide a useful reference for settlement analysis and prediction in similar underground engineering projects.

Key words:pipe-roof box culvert jacking method;pipe-roof deformation;ground settlement;calculation method;numerical simulation