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A Constitutive Model to Reveal the Anchorage Mechanism of Fully Bonded Bolts
To better understand the bonding failure at the contact between the bolt shank and anchoring agent, we developed a constitutive model of fully bonded...
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Experimental Study on Mechanical Properties of Fully Bonded Bolts with Varied Bond Length
The fully bonded bolting method is widely applied in geotechnical engineering areas and is considered as an efficient approach due to its better...
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An Ultrasonic Rock Bolt Sensing Technology (I): Methodology and Laboratory Studies
Rock bolts play a critical role in ground support in mining, tunneling and construction. Being able to obtain timely information on rock bolt load...
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Stress analysis of full-length grouted bolt under shear deformation of anchor interface
The bolt anchoring force is closely related to the shear properties of the anchor interface. The shear stress distribution of full-length grouted...
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Strength characteristics of rock anchored by NPR bolt with different preloads
This study compares the strength characteristics of rocks anchored by NPR bolts and ordinary bolts with varied preloads, based on the mechanical...
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Laboratorial Tests and Numerical Modeling of Rock Bolts Bonded by Different Materials
The interaction between bolt and rock is crucial to its reinforcing efficacy. Effective bolt installation depends on the bonding/coupling type and...
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Synergistic Mechanism and Technology of Cable Bolt Resin Anchoring for Roadway Roofs with Weak Interlayers
The process of cable bolt anchoring the roof of a coal mine roadway involves the mixture of different types of resin cartridges. However, this...
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Angle Shear Testing of 15.2 mm Seven Wire Cable Bolt
This paper focuses on the experimental study of shear testing of 15.2 mm, 25 t capacity seven wire cables at zero, 30° and 45° angles using two...
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An Improved Analytical Model for the Elastic and Plastic Strain-hardening Shear Behaviour of Fully Grouted Rockbolts
Fully grouted rock bolts are one of the main forms of rock reinforcement used in underground mines, especially in coal mines. Analytical models...
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Experimental Study of the Effects of Borehole Size, Borehole Roughness, and Installation Pressure on the Pull Load Capacity of Inflatable Rockbolts
An inflatable rockbolt is a steel tube that has been rolled into an omega shape. During installation, water is injected into the tube, which expands...
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Experimental Study on Performance of Bolted Joints Under Tensile–Shear Loads
Bolt support is an effective method to improve the shear resistance of jointed rock mass, and is widely used in the reinforcement of fractured rock...
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In Situ Rock Bolt Pull Tests Performance in an Underground Powerhouse Complex: A Case Study in Sri Lanka
This paper presents results of 71 in situ nondestructive rock bolt and tendon pull tests conducted in the Powerhouse Complex of the Uma Oya...
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Displacement of Rods During Pullout Failure of Rock Anchors: A Case Study
This paper focuses on a pullout failure of anchor rods used to stabilize rock slope at the sides of a road cut in a mountainous terrain. The...
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Mechanical behavior analysis of vertical fully grouted anchor under pullout load
Considering the changing characteristics of the mechanical properties of rock-soil with depth, it is assumed that the shear stiffness and ultimate...
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Strength, deformation and failure behavior of bolted rock-like specimen with multiple cracks under uniaxial compression by particle flow simulation
Most of the rock mass in nature contains a large number of joints, faults and other defects, which make the rock mass have the characteristics of...
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Analytical and numerical simulations to investigate effective parameters on pre-tensioned rockbolt behavior in rock slopes
Pre-tensioning of rockbolts is permitted to ensure better confinement between bedding rock slopes. The resulting shear adherence between layers is...
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Load transfer laws of tensile anchors in rock masses with weak interlayers based on a shear-slip** updating model
The load transfer characteristics of a tensile anchor in the rock mass with weak interlayers were investigated, considering the nonuniform stress of...
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Shear Performance of Rock Joint Reinforced by Fully Encapsulated Rock Bolt Under Cyclic Loading Condition
The shear performance of bolted rock joints under cyclic loading condition was studied through laboratory shear tests. The tests were performed on a...
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A ductile seismic design strategy for the cross-aisle direction of racking systems
Due to their lightness and simple connectivity, steel racking systems are typically considered as “low-dissipative” structures, which is reflected in...
