Volume 37 Issue 1
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Song Dexin, Tao Jun, Wu Ren. Calculation Analysis and Application of Ring Brace Stiffness of Circular Deep Foundation Pit[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2023, 37(1): 111-117. doi: 10.3969/j.issn.1007-2993.2023.01.020
Citation: Song Dexin, Tao Jun, Wu Ren. Calculation Analysis and Application of Ring Brace Stiffness of Circular Deep Foundation Pit[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2023, 37(1): 111-117. doi: 10.3969/j.issn.1007-2993.2023.01.020
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Calculation Analysis and Application of Ring Brace Stiffness of Circular Deep Foundation Pit

doi: 10.3969/j.issn.1007-2993.2023.01.020

  • Zhongyifeng Construction Group Co., Ltd., Suzhou 215008, Jiangsu, China

  • Received Date: 2021-08-31
  • Publish Date: 2023-02-08
    Abstract
  • Through an example of a circular foundation pit, the horizontal stiffness coefficient of single annular support was deduced, and a simple calculation formula of stiffness coefficient of annular support was proposed. Its analytical solution was used as the initial data for calculating the stiffness of supporting structure element. Through the displacement and internal force calculated by BSC and Midas GTS-NX, combining with the measured displacement and internal force after foundation pit excavation, the horizontal stiffness of the ring brace was deduced and compared with the analytical solution. The results show that the horizontal stiffness coefficient calculated by the analytical solution is larger than that calculated by the inverse calculation. According to the comparative analysis, the calculation formula of the horizontal stiffness coefficient of the ring brace was modified. The modified results can basically coincide with the inverse calculation, which can provide guidance for the design and construction of similar circular deep foundation pit.

     

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