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Analysis of Re-Tensioning Time of Anchor Cable Based on New Prestress Loss Model

Author

Listed:
  • Keyou Shi

    (School of Civil Engineering, Central South University, Changsha 410075, China)

  • Xiaoping Wu

    (School of Civil Engineering, Central South University, Changsha 410075, China
    National Engineering Laboratory for High Speed Railway Construction, Changsha 410075, China)

  • Yurong Tian

    (School of Civil Engineering, Central South University, Changsha 410075, China)

  • Xiaotian Xie

    (School of Civil Engineering, Central South University, Changsha 410075, China)

Abstract

Considering the interaction among anchor cable, frame beam and rock mass, a new model of prestress loss of anchor cable was established. The accuracy and applicability of the new model were verified by comparing the field monitoring data and the calculation results of existing models. In addition, based on the new model, the effect of the re-tension of the anchor cable at different time nodes was analyzed, and the later compensation time of anchor cable prestress was discussed. The research shows that: the accuracy of the new model is higher after considering the effect of the frame beam, the new model can not only calculate the loss of prestress of anchor cable, but also accurately predict the time when the prestress of anchor cable reaches the stable stage. The ideal effect of prestress compensation can be achieved when the anchor cable is re-tensioned at each time point after 20 days of the construction completed. The original prestress loss of the anchor cable is different, and the re-tension effect is also different, the greater the loss of the original prestress of the anchor cable, the more obvious the prestress compensation effect during the re-tension.

Suggested Citation

  • Keyou Shi & Xiaoping Wu & Yurong Tian & Xiaotian Xie, 2021. "Analysis of Re-Tensioning Time of Anchor Cable Based on New Prestress Loss Model," Mathematics, MDPI, vol. 9(10), pages 1-12, May.
    • Handle: RePEc:gam:jmathe:v:9:y:2021:i:10:p:1094-:d:553344
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    References listed on IDEAS

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    1. Wenbo Zhu & Guoliang Dai & Weiming Gong, 2021. "Study on Cyclic Cumulative Deformation Characteristics and the Equivalent Cyclic Creep Model of Soft Clay," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-11, March.
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    Cited by:

    1. Xing Gao & Jinqing Jia & Guoxiong Mei & Xiaohua Bao & Lihua Zhang & Xiaoping Liao, 2022. "A New Prestress Loss Calculation Model of Anchor Cable in Pile–Anchor Structure," Mathematics, MDPI, vol. 10(8), pages 1-18, April.

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