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<p>To ensure the safety and serviceability of operating tunnels and surrounding buildings, numerical predication of tunnel-induced building settlement was performed by using finite element analysis, in conjunction with Burgers model. Taking the Pingtian Expressway in Gansu Province as a case study, the reliability of the Burgers model was validated against on-site monitoring data of cumulative settlement, by utilizing Levenberg-Marquardt optimization algorithm, and it showed a <i>R</i><sup><i>2</i></sup> value of 0.980. A comparison was made between scenarios with and without concrete reinforcement, and the collapse-induced responses were further estimated under various collapse lengths and heights. The results indicated that surface settlement decreased by 11.67% to 98.09% when concrete reinforcement was installed, with greater sensitivity to collapse height. A statistical analysis of the risk assessments indicated that the building in Lujiawan encountered a risk level II of damage, only if the collapse height and collapse length exceeded 60&#xa0;m, as the maximum surface settlements were greater than 10&#xa0;mm. The findings of this study can serve as a reference for designing dual-tunnel excavations in regions with similar geological conditions.</p>

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Risk Assessment of Tunnel-induced Building Settlement using FEM and Burgers Model

  • 期刊论文

  • 发表日期：

    2026年4月25日

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  • Junxia Wang,
  • Junping Wang,
  • Bin Liu

摘要

To ensure the safety and serviceability of operating tunnels and surrounding buildings, numerical predication of tunnel-induced building settlement was performed by using finite element analysis, in conjunction with Burgers model. Taking the Pingtian Expressway in Gansu Province as a case study, the reliability of the Burgers model was validated against on-site monitoring data of cumulative settlement, by utilizing Levenberg-Marquardt optimization algorithm, and it showed a R2 value of 0.980. A comparison was made between scenarios with and without concrete reinforcement, and the collapse-induced responses were further estimated under various collapse lengths and heights. The results indicated that surface settlement decreased by 11.67% to 98.09% when concrete reinforcement was installed, with greater sensitivity to collapse height. A statistical analysis of the risk assessments indicated that the building in Lujiawan encountered a risk level II of damage, only if the collapse height and collapse length exceeded 60 m, as the maximum surface settlements were greater than 10 mm. The findings of this study can serve as a reference for designing dual-tunnel excavations in regions with similar geological conditions.