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Corresponding Author

梁斌, 男, 博士, 教授. E-mail: liangbin4231@163.com

Abstract

This study aims to study the settlem ent changes and distribution of various parts of a complex building during the construction of a large-diameter and small-clearance parallel pipe jacking undercrossing complex building.On the basis of the pipe jacking project of water quality guarantee engineering 2# for Tiegang –Shiyan Reservoir in Shenzhen,the settlement mechanism of pipe jacking undercrossing construction was analyzed.Through numerical simulation,the influence of the presence or absence of grouting reinforcement,and parameters such as longitudinal spacing and burial depth of pipe jacking on the variation trend and distribution law of building settlement was analyzed.The theoretically predicted values,numerical simulation values,and on-site monitoring values were compared.The results show that the settlement value and settlement difference rate of the building after grouting reinforcement with sleeve valve pipes are significantly reduced.As the longitudinal spacing of pipe jacking increases,the settlement value and slope of the variation curve of the measuring point gradually decrease.The settlement value of measuring point 3 is the most decreased,with a reduction of 83.5%.When the burial depth of pipe jacking increases from 9 m to 21 m,the maximum settlement value of the building decreases by 1.9 mm,and the overall settlement distribution gradually becomes uniform.When the burial depth of pipe jacking is 9 m,using the scheme of grouting reinforcement with sleeve valve pipes and a longitudinal spacing of 108 m for pipe jacking can minimize the effect of pipe jacking construction on the building.

Publication Date

12-24-2025

DOI

10.14048/j.issn.1671-2579.2025.06.027

First Page

234

Last Page

244

Submission Date

December 2025

Reference

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