Ning Jianguo , Zhang Zhaohui , Wang Jun , Wang Lei , Shi Xinshuai , Hu Shanchao
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Study on the effect of static fissure on the stress field of anchored rock beam and axial force of bolt
In order to investigate the effect of static fissure on the stress field of anchored rock beams and the axial force of anchors, this paper deduces the differential equation of shear stress at the anchor-rock interface (later called anchor-rock interface) in the anchored rock beams containing static fissure based on the fracture mechanics theory and solves the equation, which is shown in the results: (1) When the anchor-rock interface is within the disturbance range of the fissure tip, the vertical compressive stress at the anchor-rock interface and the shear stress at the anchor-rock interface also have sudden changes, and the magnitude of the sudden change of shear stress at the upper tip of the fissure is larger than that at the lower tip; (2) When the anchor-rock interface is outside the influence range of fissure tip disturbance, the distribution form of vertical stress at the anchor-rock interface and shear stress at the anchor-rock interface is still a smooth curve. (3) For the axial force of bolt, both at the tip of the fissure show a rapid increase in axial force, with the upper tip of the fissure showing a larger increase in bolt axial force than the lower tip.
期刊介绍：
Engineering Failure Analysis publishes research papers describing the analysis of engineering failures and related studies.
Papers relating to the structure, properties and behaviour of engineering materials are encouraged, particularly those which also involve the detailed application of materials parameters to problems in engineering structures, components and design. In addition to the area of materials engineering, the interacting fields of mechanical, manufacturing, aeronautical, civil, chemical, corrosion and design engineering are considered relevant. Activity should be directed at analysing engineering failures and carrying out research to help reduce the incidences of failures and to extend the operating horizons of engineering materials.
Emphasis is placed on the mechanical properties of materials and their behaviour when influenced by structure, process and environment. Metallic, polymeric, ceramic and natural materials are all included and the application of these materials to real engineering situations should be emphasised. The use of a case-study based approach is also encouraged.
Engineering Failure Analysis provides essential reference material and critical feedback into the design process thereby contributing to the prevention of engineering failures in the future. All submissions will be subject to peer review from leading experts in the field.
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