Abstract
The dry–wet cycle greatly impacts the anchoring effect of prestressed anchor cables in expansive soil. Moreover, the stress relaxation of the soil and prestress loss of anchor cables are correlated. This is due to the special expansion and contraction characteristics of this soil. To explore the influence of the dry–wet cycle, this study experimentally analyses the stress change mechanism of the anchor supporting structure in expansive soil; meanwhile, the coupled expansive soil-anchor stress model for the dry–wet cycle case is derived. Expansive soil possesses unique viscoelastic-plastic mechanical characteristics. These were simulated using a calculation framework based on the Bingham model. This was used to describe the coupling effect between expansive soil and anchor cable with equal strain. Dry–wet cycle tests were set up under three different conditions: moisture contents, the amplitude, and number of the wet–dry cycles, which verified the accuracy of the model. The experimental results show that the number and amplitude of dry–wet cycles determine the number and amplitude of cycles of anchor stress change, respectively, and the initial water content determines the reference value of stress change. The primary inference is that the number of dry–wet cycles has the greatest influence on stress attenuation of anchor, as shown in the experiment, where the stress attenuation of stress anchor was 88.12% of initial stress after three dry–wet cycles.
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References
Yang, W.D.; Luo, G.Y.; Bo, C.J., et al.: Mechanical properties and reinforcement effect of jointed rock mass with pre-stressed bolt. J. Cent. S. Univ. 27(12), 1–18 (2020)
Dai, Z., Chen, S., Li, J.: The failure characteristics and evolution mechanism of the expansive soil trench slope. In: Proceedings of the 2nd Pan-American Conference on Unsaturated Soils. New York (2017).
Cheng, Z.L., Ding, J., Rao, X., et al.: Physical model tests of expansive soil slope. Geo-Congress: San Diego, pp. 731–740 (2013)
Greco, R.; Guida, A.; Damiano, E., et al.: Soil water content and suction monitoring in model slopes for shallow flowslides early warning applications. Phys. Chem. Earth Parts A/B/C 35(3–5), 127–136 (2010). https://doi.org/10.1016/j.pce.2009.12.003
Jia, L.I.: Cause analysis of expensive soil landslide and support of bolt(cable) frame beam. J. Hebei Acad. Sci. 3, 80–84 (2015)
Shunchuan, W.U.; Danguang, P.: Reinforce approach of self-balance pre-stressed bolts for expensive soil slope. Chin. J. Geotech. Eng. 30(4), 492–497 (2008)
Duowen, D.; Shiwei, B.A.I.; Guoyu, L.: Analysis on the load losses of prestressed rock cable bolts. J. Eng. Geol. 3(1), 65–69 (1995)
Siming, H.E.; Chenghua, W.; Jianping, Q.: Study on anchorage effect of prestressed anchor cables: theory and modelling. Sci. China E 33(Suppl. 1), 101–109 (2003)
Ximing, L.U.; Hanya, Z.: Experiment and research on multi-anchorage effect in cracked rock slope. J. Highway Transp. Res. Dev. 22(6), 66–80 (2005)
Qingbiao, W.; Cong, Z.; Hui, W., et al.: Study on the coupling effect of anchorage force loss of prestressed anchor cable and rock and soil creep. Rock Soil Mech. 35(8), 150–152 (2014)
Shi, K., et al.: Coupled calculation model for anchoring force loss in a slope reinforced by a frame beam and anchor cables. Eng. Geol. 260, 105245 (2019). https://doi.org/10.1016/j.enggeo.2019.105245
Shi, K.; Wu, X.; Tian, Y., et al.: Analysis of Re-tensioning time of anchor cable based on new prestress loss model. Mathematics 9(10), 1094 (2021)
Ye, S.; Fang, G.; Zhu, Y.: Model establishment and response analysis of slope reinforced by frame with prestressed anchors under seismic considering the prestress. Soil Dyn. 122, 228–234 (2019). https://doi.org/10.1016/j.soildyn.2019.03.034
Wu, K.; Shao, Z.; Li, C., et al.: Theoretical investigation to the effect of bolt reinforcement on tunnel viscoelastic behavior. Arab. J. Sci. Eng. 45(5), 3707–3718 (2020). https://doi.org/10.1007/s13369-019-04215-9
Liu, Q.: Analysis prestressed anchor cable reinforcement technique and prestressed detection method. Int. J. Civ. Eng. Mach. Manuf. 2(1) (2017).
Cai, Y.; Esaki, T.; Jiang, Y.: A rock bolt and rock mass interaction model. Int. J. Rock Mech. Min. Sci. 41(7), 1055–1067 (2004). https://doi.org/10.1016/j.ijrmms.2004.04.005
Guan, Z.; Jiang, Y.; Tanabasi, Y., et al.: Reinforcement mechanics of passive bolts in conventional tunnelling. Int. J. Rock Mech. Min. Sci. 44(4), 625–636 (2007). https://doi.org/10.1016/j.ijrmms.2006.10.003
Jeng, F.-S.; Huang, T.-H.: The holding mechanism of under-reamed rockbolts in soft rock. Int. J. Rock Mech. Min. Sci. 36(6), 761–775 (1999). https://doi.org/10.1016/S0148-9062(99)00045-5
Hazzard, J.F.; Young, R.P.: Dynamic modelling of induced seismicity. Int. J. Rock Mech. Min. Sci. 41(12), 365–376 (2004)
Acknowledgements
The authors appreciate the support of the National Natural Science Foundation of China (Project No. 51508556), the Key Special Project of National Key R&D Program (Project No. 2016YFC080250504), the Fundamental Research Fund for the Central Universities (Project No. 2014QL02) and Yue qi Young Scholars of China University of Mining and Technology-Beijing (Project No. 00800015Z1166) .
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Tao Li contributed to conceptualization, methodology, investigation. Rui Hou contributed to writing—original draft. Bo Liu contributed to writing—review and editing, investigation. Xiao Qian contributed to project administration, supervision. Chen Xu contributed to data curation.
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Li, T., Hou, R., Xu, C. et al. Experimental Study on Structural Stability of Expansive Soil-Anchor Cable System Under Dry–Wet Cycle Effect. Arab J Sci Eng 47, 12901–12914 (2022). https://doi.org/10.1007/s13369-022-06603-0
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DOI: https://doi.org/10.1007/s13369-022-06603-0