Study on the Creep of Surrounding Rock and Prestress Loss of Anchor Cable Based on Nishihara Model

  • Song Ziyuan ,
  • Chen Qiang ,
  • Zhou Menglin ,
  • Peng Chuanyang ,
  • Wang Bo
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  • 1. School of Earth Science and Engineering, Southwest Jiaotong University, Chengdu 610000, P.R. China;
    2. Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, P.R. China

Received date: 2024-10-24

  Online published: 2025-09-03

Abstract

The influence of the surrounding rock creep of soft rock tunnel on the prestress of the anchor cable can not be ignored. In order to explore the relationship between rock mass and prestress loss under the creep coupling effect of prestressed anchor cable, this paper uses the theory of the component combination model and takes a soft rock highway tunnel in the west as the engineering background. The Nishihara model, with good applicability to describe the creep problem of soft rock, and the Hooke model describing the prestressed anchor cable are connected in parallel, and the Nishihara coupling model of anchor cable prestress changing with time under creep effect is established. The coupling model is used to calculate and analyze the initial stress between 15~30 MPa. The goodness of fit of the Xiyuan coupling model and the generalized Kelvin coupling model to the long-term monitoring value of the cable prestress. The results show that: The average goodness of fit of the Nishihara coupling model is 0.98, which is much higher than the average goodness of fit of 0.73 of the generalized Kelvin coupling model. It is proven that the calculation results of the Nishihara coupling model are better than the generalized Kelvin coupling model for the fitting of the monitoring data, and it is more suitable for simulating the prestress loss of the anchor cable under the long-term creep of the soft rock tunnel. The research results have certain guiding significance for the design and construction of prestressed support engineering.

Cite this article

Song Ziyuan , Chen Qiang , Zhou Menglin , Peng Chuanyang , Wang Bo . Study on the Creep of Surrounding Rock and Prestress Loss of Anchor Cable Based on Nishihara Model[J]. Chinese Journal of Underground Space and Engineering, 2025 , 21(4) : 1137 -1145 . DOI: 10.20174/j.JUSE.2025.04.04

References

[1] 康红普,吴拥政,褚晓威,等. 小孔径锚索预应力损失影响因素的试验研究[J].煤炭学报,2011,36(8):1245-1251.(Kang Hongpu, Wu Yongzheng, Chu Xiaowei, et al. Tests on affecting factors for pretension loss of cables with small borehole [J]. Journal of Coal, 2011,36 (8): 1245-1251. (in Chinese))
[2]汪波,郭新新,何川,等. 当前我国高地应力隧道支护技术特点及发展趋势浅析[J].现代隧道技术,2018,55(5):1-10.(Wang Bo, Guo Xinxin, He Chuan, et al. Analysis on the characteristics and development trends of the support technology of high ground stress tunnels in China [J].Modern tunnel technology, 2018,55 (5) : 1-10. (in Chinese))
[3]丁远振,谭忠盛,马栋. 高地应力断层带软岩隧道变形特征与控制措施研究[J].土木工程学报,2017,50(增1):129-134.(Ding Yuanzhen, Tan Zhongsheng, Ma Dong. Study on large deformation characteristics and control measures of soft rock tunnel in fault zone with high geostress [J]. Journal of Civil Engineering, 2017,50 (Supp. 1): 129-134. (in Chinese))
[4]洪开荣. 我国隧道及地下工程近两年的发展与展望[J].隧道建设,2017,37(2):123-134.(Hong Kairong. Development and prospects of tunnels and underground works in China in recent two years [J]. Tunnel construction, 2017,37 (2): 123-134. (in Chinese))
[5]陈安敏,顾金才,沈俊,等. 软岩加固中锚索张拉吨位随时间变化规律的模型试验研究[J].岩石力学与工程学报,2002(2):251-256.(Chen Anmin, Gu Jincai, Shen Jun, et al. Model Testing Research on The Variation of Tension Force of Anchor Cable With Time in Reinforcement of Soft Rocks [J].According to Journal of Rock Mechanics and Engineering, 2002 (2): 251-256. (in Chinese))
[6]朱晗迓,尚岳全,陆锡铭,等. 锚索预应力长期损失与坡体蠕变耦合分析[J].岩土工程学报,2005(4):464-467. (Zhu Hanya, Shang Yuequan, Lu Ximing, etc. Coupling analysis of long-term prestress loss and slope creep [J]. Journal of Geotechnical Engineering, 2005 (4): 464-467. (in Chinese))
[7]伍国军,陈卫忠,王永刚. 基于岩体蠕变效应的锚杆应力分布及其变化规律研究[J].岩土力学,2010,31(增1):150-155, 171.(Wu Guojun, Chen Weizhong, Wang Yonggang. Study of distribution and variation of anchor stress based on creep effect of rock mass [J].Geotechnical Mechanics, 2010,31 (Supp. 1): 150-155, 171. (in Chinese))
[8]董旭光,马子涵,李峥,等. 锚固力损失与岩土体时效变形耦合模型研究[J].岩石力学与工程学报,2022,41(6):1093-1102. (Dong Xuguang, Ma Zihan, Li Zheng, et al. Study on coupling model of anchorage force loss and time-dependent deformation of rock-soil mass [J]. Journal of Rock Mechanics and Engineering, 2022,41 (6) : 1093-1102. (in Chinese))
[9]陶志刚,罗森林,康宏伟,等. 公路隧道炭质板岩变形规律及蠕变特性研究[J].中国矿业大学学报,2020,49(5):898-906.(Tao Zhigang, Luo Lin, Kang Hongwei, et al. Analysis of deformation law and creep characteristics of carbonaceous slate in highway tunnel [J].Journal of China University of Mining and Technology, 2020,49 (5): 898-906. (in Chinese))
[10]谢璨,李树忱,李术才,等. 渗透作用下土体蠕变与锚索锚固力损失特性研究[J].岩土力学,2017,38(8):2313-2321, 2334.(Xie Can, Li Shuchen, Li Shucai, et al. Study of anchorage force loss of anchor cable under seepage flow and soil creep [J]. Geotechnical Mechanics, 2017,38 (8): 2313-2321, 2334. (in Chinese))
[11]王清标,张聪,王辉,等. 预应力锚索锚固力损失与岩土体蠕变耦合效应研究[J].岩土力学,2014,35(8):2150-2156, 2162.(Wang Qingbiao, Zhang Cong, Wang Hui, et al. Study of coupling effect between anchorage force loss of prestressed anchor cable and rock and soil creep [J]. Geotechnical mechanics, 2014,35 (8): 2150-2156, 2162. (in Chinese))
[12]Wang G, Liu C Z, Jiang Y J, et al. Rheological model of DMFC rockbolt and rockmass in a circular tunnel[J]. Rock Mechanics and Rock Engineering, 2015, 48(6): 2319-2357.
[13]宋洋,李永启. 锚杆松弛与岩体蠕变耦合预应力损失模型研究[J].地下空间与工程学报,2021,17(4): 1091-1098.(Song Yang, Li Yongqi. Study on the model of prestress loss coupled with cable relaxation and rock creep [J]. Underground space and engineering, 2021,17 (4): 1091-1098. (in Chinese))
[14]宋洋,李永启,王韦颐,等. 加锚节理岩体剪切蠕变特性及其本构模型分析[J].煤炭学报,2020,45(4):1357-1366.(Song Yang, Li Yongqi, Wang Weiyi, et al. Shear creep characteristics and constitutive model analysis of jointed rock mass [J]. Journal of Coal, 2020,45 (4): 1357-1366. (in Chinese))
[15]邓东平,李亮. 锚索预应力长期损失与岩土体蠕变耦合模型研究[J].长江科学院院报,2015,32(8):65-71.(Deng Dongping, Li Liang. Coupled model for the long-term pre-stress loss of anchor cable and geotechnical creep [J]. Journal of Yangtze River Academy of Sciences, 2015,32 (8): 65-71. (in Chinese))
[16]潘文成 李元彪 左德元. 岩体性质对锚索预应力损失影响的灰色关联度分析[J].地下空间与工程学报,2015,11(增2):457-461. (Pan Wencheng, Li Yuanbiao, Zuo Deyuan. Grey Relational Analysis on Effect of Properties of Rock Mass on Anchor Cable Prestress Losses [J].Underground Space and Engineering Journal, 2015,11 (Supp. 2): 457-461. (in Chinese))
[17]Yang W D,Wang X P, Ivanovic A, et al. Coupled analytical solutions for circular tunnels considering rock creep effects and time-dependent anchoring forces in prestressed bolts[J]. Tunnelling and Underground Space Technology incorporating Trenchless Technology Research,2023,134(1): 104954.
[18]张洋洋. 高地应力凝灰岩隧道变形失稳机理及稳定性控制技术研究[D].成都:西南交通大学,2021.(Zhang Yangyang. Study on deformation and instability mechanism and stability control technology of tuff tunnel under high geostress [D].Chengdu: Southwest Jiaotong University, 2021. (in Chinese))
[19]李英勇,王梦恕,张顶立,等. 锚索预应力变化影响因素及模型研究[J].岩石力学与工程学报,2008(增1):3140-3146.(Li Yingyong, Wang Mengshu, Zhang Dingli, et al. Study on influencing factors and model for variation of anchor cable prestress [J]. Journal of Rock Mechanics and Engineering, 2008 (Supp. 1) : 3140-3146. (in Chinese))
[20]沈明荣,谌洪菊. 红砂岩长期强度特性的试验研究[J].岩土力学,2011,32(11):3301-3305.(Shen Mingrong, Chen Hongju. Testing study of long-term strength characteristics of red sandstone [J].Geomechanics, 2011,32 (11) : 3301-3305. (in Chinese))
[21]王国富,李强,路林海,等. 考虑锚索松弛特性的预应力损失计算模型研究[J].地下空间与工程学报,2017,13(6):1585-1591.(Wang Guofu, Li Qiang, Lu Linhai, et al. A coupled model research of anchor prestress loss considering the relaxation characteristics of anchor [J]. Journal of Underground Space and Engineering, 2017,13 (6): 1585-1591. (in Chinese))
[22]陈拓,陈国庆,黄润秋,等. 考虑高边坡强卸荷的锚索锚固力耦合变化模型[J].岩土力学,2018,39(11):4125-4132. (Chen Tuo, Chen Guoqing, Huang Runqiu, et al. A model of anchorage force loss of anchor cable during high slope strong unloading [J]. Geotechnical Mechanics, 2018,39 (11): 4125-4132. (in Chinese))
[23]王更峰,张永兴,熊晓晖,等. 深埋大变形隧道炭质板岩蠕变特性试验[J].公路交通科技,2012,29(9):95-102.(Wang Gengfeng, Zhang Yongxing, Xiong Xiaohui, et al. Experiment of creep characteristics of carbonaceous slate of deep-buried tunnel with large deformation [J]. Highway Transportation Science and Technology, 2012,29 (9): 95-102. (in Chinese))
[24]王璐,阚子威,唐时美,等. 卸荷破裂岩体非定常分数阶蠕变模型[J].地下空间与工程学报,2023,19(4):1106-1114, 1133. (Wang Lu, Kan Ziwei, Tang Shimei, et al. Unsteady fractional creep model of unloading fractured rock mass [J]. Journal of Underground Space and Engineering, 2023,19 (4): 1106-1114, 1133. (in Chinese))
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