Research on influence of anchor cable failure on slope dynamic response

Jia, Zhibo; Tao, Lianjin; Bian, Jin; Wen, Hu; Wang, Zhigang; Cheng, Shijie; Zhang, Haixiang

doi:10.1016/j.soildyn.2022.107435

Cited by 13 publications

(6 citation statements)

References 28 publications

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“…The relative velocity leads to a decrease in the friction coefficient of the structural plane, which reduces the strength of the structural plane. Damage effect of prestressed anchor cables 17 , 20 : During earthquakes, damage effects may occur in anchor cables subjected to the tensile action of the sliding body, resulting in different degrees of deterioration of the axial force and stiffness of anchor cables. …”

Section: Seismic Deterioration Effectmentioning

confidence: 99%

“…Damage effect of prestressed anchor cables 17 , 20 : During earthquakes, damage effects may occur in anchor cables subjected to the tensile action of the sliding body, resulting in different degrees of deterioration of the axial force and stiffness of anchor cables.…”

Section: Seismic Deterioration Effectmentioning

confidence: 99%

“…The failure modes of anchor cables are generally divided into brittle failures such as anchor head cracking and anchor pier collapse, and ductile failures such as anchor cable breakage. Among them, the maximum axial force is usually used as the failure index for brittle failure mode, while the elongation is used as the failure index for ductile failure due to the obvious yield stage of the anchor cable 17 . Based on the above considerations, the calculation model of the anchor cable for the brittle failure mode and the ductile failure mode is proposed in this paper.…”

Section: Seismic Deterioration Effectmentioning

confidence: 99%

“…In the stability analysis of anchored slopes under earthquakes, the change in axial force of the anchor cable is generally not considered. However, it has been confirmed by a large number of shaking table tests and numerical simulation studies that the axial force of the anchor cable changes with the seismic acceleration during earthquakes, and even the anchor cable fracture occurs 17 – 19 . Yan et al regarded the anchor cable as a linear elastic material, and proposed a theoretical formula for calculating the dynamic safety factor of the anchored slope considering the change of the axial force of the anchor cable 20 .…”

Section: Introductionmentioning

confidence: 99%

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Dynamic stability analysis method of anchored rocky slope considering seismic deterioration effect

Jia,

Gao,

Bao

et al. 2024

Sci Rep

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The seismic deterioration effects of anchor cables and slope structural planes are often neglected in the dynamic stability analysis of anchored rocky slopes to the extent that the stability of slopes is overestimated. In this paper, a dynamic calculation method for anchored rocky slopes considering the seismic deterioration effect is established, and a stability evaluation method for anchored rocky slopes based on the Gaussian mixture model is proposed. The seismic deterioration effect on the stability of anchored rocky slopes is quantitatively analyzed with an engineering example, and the relationship between seismic intensity and the failure probability of slopes is clarified. The results show that compared with the calculation method without considering the seismic deterioration effect, the minimum safety factor and post-earthquake safety factor obtained by the proposed method in this paper are smaller. The number of seismic deteriorations of the slope is used as the number of components of the Gaussian mixture model to construct the failure probability model of the slope, which can accurately predict the failure probability of anchored rocky slopes. The research results significantly improve the accuracy of the stability calculation of anchored rocky slopes, which can be used to guide the seismic design and safety assessment of anchored rocky slopes.

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Section: Seismic Deterioration Effectmentioning

confidence: 99%

Section: Seismic Deterioration Effectmentioning

confidence: 99%

Section: Seismic Deterioration Effectmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dynamic stability analysis method of anchored rocky slope considering seismic deterioration effect

Jia,

Gao,

Bao

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Prestressed anchor cables are widely used in a large number of anchorage projects [1]. However, in the actual project, the anchor cable will produce defects such as corrosion and fracture due to the erosion of water, air and harmful ions in the environment, resulting in the failure of the prestressed anchor cable during the working process [2]. Under the condition of long-term operation, the Prestressed anchor cables failure caused by its performance evolution and cable body damage gradually appears.…”

Section: Introductionmentioning

confidence: 99%

Evaluating damage progress in prestressed anchor cables with artificial defects using acoustic emission technology

Zhang,

Su,

Zeng

et al. 2024

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVIII

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For the purpose of lightweight and long span, the structural solution using cable is proposed, especially for the bridges and roofs design. Herein, one of the key members is the anchor cable, which plays decisive role in the cable structure. But the prestressed anchor cable is vulnerable to corrosion and fatigue damage due to various environmental activities. Failure due to accumulative defects or broken wires is inevitable, which seriously effects on the status of the cable-structure system. Therefore, it is essential to propose an efficient method which can realize the real-time evaluation and monitoring of the health status of the prestressed anchor cable. In this paper, the acoustic emission (AE) technique was proposed to quantify the damage progress in the prestressed anchor cable. In order to verify the proposed AE-based method, three prestressed anchor cables with different prescribed defects were tested to failure under the fatigue tensile. Different depths of scratches were preset at different positions of the steel wires in the cables. Aiming to the bundle of the anchor cable, the conventional 1-D AE localization and zonal localization method were combined to localize the micro-crack and rupture of cable. The relationship between AE signal signature and damage was established. The acoustic emission signatures were identified and characterized: (i) friction between cables; (ii) plastic deformation of cable; (iii) rupture. With the localization of AE and typical AE signature, the failure progress can be described. The massive AE signals of plastic deformation can provide the precursor of the cable rupture. AE shows good potential for predicting the healthy status of the prestressed anchor cable.

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Dynamic stability analysis of anchored anti-dip slope under the Ludian earthquake: a case study of the Manhekuan slope, Yunnan, China

Wu,

Wang,

et al. 2024

Bull Eng Geol Environ

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Research on influence of anchor cable failure on slope dynamic response

Cited by 13 publications

References 28 publications

Dynamic stability analysis method of anchored rocky slope considering seismic deterioration effect

Dynamic stability analysis method of anchored rocky slope considering seismic deterioration effect

Evaluating damage progress in prestressed anchor cables with artificial defects using acoustic emission technology

Dynamic stability analysis of anchored anti-dip slope under the Ludian earthquake: a case study of the Manhekuan slope, Yunnan, China

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