Volume 39 Issue 4
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Pang Rui, Duan Meinan, Xiao Bo, Liu Yanghang, Dong Zhu. Mechanical performance of prefabricate RC foundation of high voltage substation frame considering foundation-soil-structure interaction[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(4): 511-522. doi: 10.20265/j.cnki.issn.1007-2993.2024-0108
Citation: Pang Rui, Duan Meinan, Xiao Bo, Liu Yanghang, Dong Zhu. Mechanical performance of prefabricate RC foundation of high voltage substation frame considering foundation-soil-structure interaction[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(4): 511-522. doi: 10.20265/j.cnki.issn.1007-2993.2024-0108
shu

Mechanical performance of prefabricate RC foundation of high voltage substation frame considering foundation-soil-structure interaction

doi: 10.20265/j.cnki.issn.1007-2993.2024-0108
  • 1.

    College of Civil Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China

  • 2.

    State Grid Henan Economic Research Institute, Zhengzhou 450052, Henan, China

  • Received Date: 2024-03-08
  • Accepted Date: 2024-05-09
  • Rev Recd Date: 2024-04-18
  • Publish Date: 2025-08-08
    Abstract
  • To study the mechanical performance of prefabricated reinforced concrete (RC) foundation of substation frame, the foundation-soil-structure interaction (FSSI) model, the foundation-structure interaction (FSI) model, foundation-soil model and foundation fixed model were established by ABAQUS software. Considering the adverse wind conditions under the bearing capacity limit state, the structural responses of each component in the four models were compared and analyzed, and the simulation analysis method of the prefabricated foundation was optimized. The results show that under the unfavorable wind conditions, the stress and deformation of each component of the prefabricated foundation and the herringbone frame in the FSSI model are in the elastic stage, which meets the design requirements. Under the four model conditions, when the influence of soil is not considered, the stress distribution of the prefabricated foundation is uneven and the value is small, the vertical displacement and deformation are almost zero, the stress of the main control nodes of the herringbone frame is large and the displacement is small. When the synergistic deformation of the whole structure is not considered, the stress of the prefabricated foundation concrete and the steel bar is small; considering the foundation-soil-structure interaction, the stress, displacement and deformation of the prefabricated foundation increase, and the along-wind displacement of the herringbone frame increases. This analysis method is more in line with the actual stress and is conducive to the safety design of the prefabricated foundation. If the arrangement of the herringbone frame is consistent and the simplified modeling method of applying equivalent load is used to design the foundation, the reinforcement amount of the prefabricated three-column foundation and the double-column foundation should be increased by about 60% and 27%, respectively.

     

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