<p>Shield tunnel construction exhibits disadvantages such as ground settlement and building deformation, which can cause structural instability as well as environmental concerns. Additionally, the inconsistent and unreliable electricity supplied by traditional energy systems exacerbates soil disturbance. Other research has concentrated on mechanical improvements and alternative ways of building but mostly failed to take these energy inefficiencies' effects on ground stability into account. To face these challenges, this study explores the application of hybrid renewable energy systems in shield tunnel construction to solve ground subsidence and building deformation problems. Firstly, this research develops a cohesive simulation model in PLAXIS 3D to simulate different common excavation scenarios, and eventually, an entire solar-powered tunneling equipment can be powered using renewable energy sources such as solar or wind. Secondly, a new two-story building between the two shield tunnels is analyzed in detail to assess the impact of renewable energy on ground stability and building deformation. Furthermore, a comparison between traditional and hybrid renewable energy systems in terms of construction efficiency as well as ground disturbance was also performed. Lastly, it evaluates the systems over key stages of construction (grouting and excavation). According to the experimental results, in comparison with traditional energy systems by 0.029 and 0.036&#xa0;m ground settlement was reduced using hybrid renewable energy systems, and respectively decrease of building deformation up to for this type of method is applicable more than that in conventional ones. These results show the efficiency of renewable energy systems in improving construction stability and reducing environmental impact.</p>

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Hybrid renewable energy advances and their impact on ground settlement in shield tunnel construction

  • Guo HanZhang,
  • Zhang Guangcheng,
  • Ye Xiane

摘要

Shield tunnel construction exhibits disadvantages such as ground settlement and building deformation, which can cause structural instability as well as environmental concerns. Additionally, the inconsistent and unreliable electricity supplied by traditional energy systems exacerbates soil disturbance. Other research has concentrated on mechanical improvements and alternative ways of building but mostly failed to take these energy inefficiencies' effects on ground stability into account. To face these challenges, this study explores the application of hybrid renewable energy systems in shield tunnel construction to solve ground subsidence and building deformation problems. Firstly, this research develops a cohesive simulation model in PLAXIS 3D to simulate different common excavation scenarios, and eventually, an entire solar-powered tunneling equipment can be powered using renewable energy sources such as solar or wind. Secondly, a new two-story building between the two shield tunnels is analyzed in detail to assess the impact of renewable energy on ground stability and building deformation. Furthermore, a comparison between traditional and hybrid renewable energy systems in terms of construction efficiency as well as ground disturbance was also performed. Lastly, it evaluates the systems over key stages of construction (grouting and excavation). According to the experimental results, in comparison with traditional energy systems by 0.029 and 0.036 m ground settlement was reduced using hybrid renewable energy systems, and respectively decrease of building deformation up to for this type of method is applicable more than that in conventional ones. These results show the efficiency of renewable energy systems in improving construction stability and reducing environmental impact.