锚固节理岩体蠕变疲劳模型研究

IF 0.6 4区工程技术 Q4 MECHANICS

Journal of Theoretical and Applied Mechanics Pub Date : 2023-01-17 DOI:10.15632/jtam-pl/157510

Yang Song, B. Fan, Yongqi Li, Heping Wang

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引用次数: 0

摘要

为探讨锚固岩体在疲劳和蠕变相互作用下的力学响应，本文选取疲劳幅值和疲劳频率作为影响因素，对锚固岩体进行了疲劳蠕变试验。基于分数阶理论和二元摄动理论，构造了一种新的分数阶蠕变模型。结果表明，与Burgers模型相比，新提出的蠕变模型能更好地描述锚固节理岩体在疲劳载荷作用下的蠕变变形全过程。

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Research on creep-fatigue model of anchored jointed rock mass

To explore the mechanical response of anchored rock mass with an interaction of fatigue and creep, this paper selects the fatigue amplitude and fatigue frequency as inﬂuencing factors to carry out a fatigue-creep experiment of the anchored rock mass. Based on fractional order theory and binary perturbation theory, a new fractional order creep model is constructed. The results show that compared with the Burgers model, the newly proposed creep model can better describe the whole process of creep deformation of the anchored jointed rock mass under fatigue loading.

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来源期刊

Journal of Theoretical and Applied Mechanics 物理-力学

CiteScore

1.40

自引率

14.30%

发文量

审稿时长

6 months

期刊介绍： The scope of JTAM contains: - solid mechanics - fluid mechanics - fluid structures interactions - stability and vibrations systems - robotic and control systems - mechanics of materials - dynamics of machines, vehicles and flying structures - inteligent systems - nanomechanics - biomechanics - computational mechanics