Evaluation of Ultimate Pullout Capacity of Anchor Cables Embedded in Rock Using a Unified Rupture Shape Model

Zhang, Qian‐qing; Feng, Ruo-feng; Xu, Zhenhao; Liu, Shan-wei; Qian, Jiangu

doi:10.1007/s10706-018-00782-0

Cited by 7 publications

(4 citation statements)

References 27 publications

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“…You and Zhan 2 indicated that the magnitude of anchoring force is related to the length of anchorage, but increasing the anchorage length beyond a certain point result in only limited force increase. Zhang et al 3 found that geological strength parameters have a significant impact on the ultimate capacity of anchor cables and that reducing construction disturbance can enhance anchor cable ultimate capacity to certain extent. Pan et al 4 observed that the maximum pullout force decreases with an increase in the water-cement ratio of grout, while it exhibits certain variability with an increase in rock mass particle size.…”

Section: Introductionmentioning

confidence: 99%

“…Zhang et al 12 assumed the fracture surface to be an inverted truncated cone. Zhang et al 3 proposed a unified model for describing fracture surface shapes. Wang et al 13 found that the failure mechanism of anchorage segments initially involves pullout failure and then shear failure.…”

Section: Introductionmentioning

confidence: 99%

“…He et al 24 derived an equation for calculating the ultimate capacity of anchor cable rods based on the modified Mohr-Coulomb failure criterion. Zhang et al 3 established an equation for calculating the ultimate capacity of single anchor cables or strands considering layout, grouting pressure, rock mass quality, and construction disturbance, using the limit equilibrium method and the generalized Hoek-Brown criterion. Ma et al 7 developed a theoretical equation for calculating the ultimate capacity of expansion head anchor cables.…”

Section: Introductionmentioning

confidence: 99%

“…assumed the fracture surface to be an inverted truncated cone. Zhang et al 3 . proposed a unified model for describing fracture surface shapes.…”

Section: Introductionmentioning

confidence: 99%

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Research on calculation model for ultimate bearing capacity of tensile type anchor cables and the shape of internal fracture surface in anchorage segment

Ren,

Meng,

Chen

et al. 2024

Num Anal Meth Geomechanics

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The generalized model and parameter equation for the internal fracture surface of tensile type anchor cable anchorage section are constructed, and the calculation model of ultimate bearing capacity is derived based on the principle of limit equilibrium. The shape of the internal fracture surface in the anchorage section and the expression of its parameter equation are experimentally studied, and the variation law of the parameter equation and fracture range with the diameter of the anchor cable and confining pressure is analyzed. The parameter equation is substituted into the calculation model to realize the calculation and verification of the model. Through theoretical derivation, a calculation model of ultimate bearing capacity of anchor cable is obtained, which comprehensively considers the average shear strength of anchorage section, the shape of fracture surface, fracture range and confining pressure. The tests show that according to the magnitude of the confining pressure on the anchorage section, the internal fracture surface takes on two shapes: cylindrical and trumpet‐shaped, the parameter equation of trumpet‐shaped fracture surface obeys logarithmic distribution approximately. The coefficient a decreases with the increase of confining pressure but increases with the increase of anchor cable diameter, the constant b increases with the increase of confining pressure but decreases with the increase of anchor cable diameter. The ranges of horizontal and vertical fracture decrease with the increase of confining pressure, and increase with the increase of anchor cable diameter. The deviations between the theoretical calculation and the experimental results are less than 6.5%.

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Section: Introductionmentioning

confidence: 99%