›› 2018, Vol. 39 ›› Issue (4): 1203-1210.doi: 10.16285/j.rsm.2016.0901

• 基础理论与实验研究 • 上一篇    下一篇


崔 臻1,盛 谦1,冷先伦1,罗庆姿2   

  1. 1. 中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室,湖北 武汉 430071; 2. 广东工业大学 土木与交通工程学院,广东 广州 510006
  • 收稿日期:2016-04-25 出版日期:2018-04-11 发布日期:2018-06-06
  • 作者简介:崔臻,男,1986年生,博士(后),副研究员,主要从事岩土工程静动力稳定性评价方面的研究工作。
  • 基金资助:

    国家重点基础研究发展计划(973)项目(No. 2015CB057905);国家重点研发计划(No. 2016YFC0401803);国家自然科学基金资助项目 (No. 51779253,No. 41672319);广东省自然科学基金-博士启动(No. 2016A030310345)。

Transmission of S-wave across one joint using the continuously yielding model

CUI Zhen1, SHENG Qian1, LENG Xian-lun1, LUO Qing-zi2   

  1. 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China; 2. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
  • Received:2016-04-25 Online:2018-04-11 Published:2018-06-06
  • Supported by:

    This work was supported by the National Program on Key Basic Research Project of China (2015CB057905), the National Key R & D Program of China (2016YFC0401803), the National Natural Science Foundation of China (51779253, 41672319) and the Guangdong Natural Science Foundation (2016A030310345).

摘要: 地震波在跨越岩体中节理时的透反射特性是岩石地下工程抗震分析问题中的重要基础,目前开展的研究工作中尚未有针对连续屈服(CY)非线性节理模型透反射特性的研究报导。在前人提出的非线性节理透反射系数时域递归法解答的基础上,将这一方法拓展至CY模型。并采用3DEC离散元软件,对比了CY模型的时域递归解与数值模拟结果的差异。在此基础上以时域递归解为手段,辅以离散元数值模拟,开展了CY模型的参数影响研究。最终比较了库仑(MC)模型与CY模型在正弦脉冲激励和真实地震动激励下表现的差异。结果表明:CY模型的时域递归解与3DEC数值模拟结果显示了良好的一致性,证明了时域递归解用以进行后续参数研究的合理性。法向应力、入射波幅值、节理初始刚度、节理间距等参数对CY模型具有显著影响。相比库仑模型,连续屈服模型可以更好地反映地震波穿越节理时发生的复杂力学现象,如切向刚度退化、抗剪强度劣化、法向应力依赖性、滞回现象等。研究成果可为岩石地下工程的抗震设计与分析工作提供一定参考。

关键词: 地震波传播, 非线性节理, 时域递归法, 连续屈服模型

Abstract: It is important to consider an aseismic issue, which is that transflective properties of the seismic wave propagating through joints embedded in rock in underground rock engineering. However, there is very limited research on transflective properties by using the continuously yielding nonlinear joints model. In this paper, a continuously yielding (CY) model was developed based on the time-domain recursive method (TDRM) for S wave using a nonlinear Coulomb-slip (MC) model. Verification of TDRM-based results was conducted in comparison with the simulated results via 3DEC code. Meanwhile, the influence parameters were also discussed. Finally, the results from MC model and CY model were compared under an idealised impulse excitation and a real ground motion record, respectively. It can be seen that TDRM-based results show good agreement with the simulated results by 3DEC, which proves that TDRM is reliable to study the subsequent parameters. In addition, CY model is significantly influenced by parameters of normal stress, incident wave amplitude, initial joint stiffness and joint spacing, respectively. Compared with MC model, CY model can better describe complex joint behaviours in the wave propagation, such as tangential stiffness degradation, shear strength deterioration, normal stress dependence and the hysteresis effect. Therefore, research results can provide useful references for the seismic design and analysis of rock underground engineering.

Key words: seismic wave propagation, nonlinear joint, time-domain recursive method, continuously yielding model


  • TU 457

[1] 费鸿禄,包士杰,杨智广. 应力波斜入射对岩体节理端部的影响[J]. , 2018, 39(7): 2327-2335.
[2] 崔 臻,盛 谦,冷先伦,罗庆姿,. 地下洞室地震动力响应的岩体结构控制效应[J]. , 2018, 39(5): 1811-1824.
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