scholarly journals Study on Double-Shear Test of Anchor Cable and C-Shaped Tube

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Renliang Shan ◽  
Yongsheng Bao ◽  
Pengcheng Huang ◽  
Weijun Liu ◽  
Gengzhao Li
Keyword(s):  
Shear Test ◽  
Surrounding Rock ◽  
Shear Tests ◽  
Double Shear ◽  
Anchor Cable ◽  
Shaped Tube ◽  
Shear Performance ◽  
Double Shear Test ◽  
Free Section ◽  
Supporting Materials

The free section of prestressed anchor cable is a weak part of support. A new supporting structure named Anchor Cable and C-Shaped Tube, which can bear transverse shear force, solves the problem that rock bolt and anchor cable are prone to shear failure in the free section and also solves the contradiction between high preload and low shear bearing capacity of support materials. Double-shear tests of Anchor Cable and C-Shaped Tube with smooth joint planes were carried out. Double-shear tests were carried out on the anchor cables with the diameter of 21.6 mm and the same type of Anchor Cable and C-Shaped Tube under different preload conditions. The influence of the preload on the shear performance of supporting materials and the enhancement effect of Anchor Cable and C-Shaped Tube supporting structure on the shear performance of anchor cables were analyzed. The test results confirm that Anchor Cable and C-Shaped Tube can improve the transverse shear resistance of the supporting material and increase the axial ultimate bearing capacity of the anchor cable during the shearing process. It is found that, during the double-shear test, the fracture form of the supporting materials is tensile fracture, and when it is sheared, Anchor Cable and C-Shaped Tube can reduce the stress concentration of the interaction between the joint surface and the surrounding rock and reduce the damage to the surrounding rock.

Parametric Study of Rockbolt Shear Behaviour by Double Shear Test

2016 ◽  
Vol 49 (12) ◽  
pp. 4787-4797 ◽  
Author(s):  
L. Li ◽  
P. C. Hagan ◽  
S. Saydam ◽  
B. Hebblewhite ◽  
Y. Li
Keyword(s):  
Parametric Study ◽  
Shear Test ◽  
Shear Behaviour ◽  
Double Shear ◽  
Double Shear Test

Shear resistance contribution of support systems in double shear test

2016 ◽  
Vol 56 ◽  
pp. 168-175 ◽  
Author(s):  
L. Li ◽  
P.C. Hagan ◽  
S. Saydam ◽  
B. Hebblewhite
Keyword(s):  
Shear Test ◽  
Support Systems ◽  
Shear Resistance ◽  
Double Shear ◽  
Double Shear Test

scholarly journals Material Parameters Identification for Modelling of Carbon Rod Structures Delamination

Mechanika ◽  
2021 ◽  
Vol 27 (6) ◽  
pp. 451-458
Author(s):  
Kęstutis ŠPAKAUSKAS ◽  
Paulius GRIŠKEVIČIUS ◽  
Kazimieras PETKEVIČIUS ◽  
Vitalis LEIŠIS
Keyword(s):  
Shear Test ◽  
Element Model ◽  
Test Methods ◽  
Double Shear ◽  
Damage Process ◽  
Experimental Approaches ◽  
Interlaminar Shear ◽  
Double Shear Test ◽  
Rod Structures ◽  
Material Parameters Identification

The aim of the present work is to compare the interlaminar shear strength and fracture toughness of glued carbon fiber rods obtained using different experimental approaches and provide the effective way to characterise the interlaminar properties for reliable simulation of the delamination. Five different test methods (tension, single shear test, and double shear test, mode I and mode II delamination tests) were performed. Using the explicit LS-DYNA code the finite element model capable of simulating the damage process of bonded connection was developed. The interlaminar connection and delamination criteria were calibrated using the parameter identification methodology implemented in LS-OPT optimization tool.

New Mortar for Clay Masonry Structures

2013 ◽  
Vol 705 ◽  
pp. 3-8
Author(s):  
F. Gouny ◽  
F. Fouchal ◽  
P. Maillard ◽  
S. Rossignol
Keyword(s):  
Mechanical Behavior ◽  
Shear Test ◽  
Test Sample ◽  
Image Correlation ◽  
Good Adhesion ◽  
Adhesion Properties ◽  
Full Field ◽  
Double Shear ◽  
Double Shear Test ◽  
Geopolymer Binder

Construction system using timber frame with earth brick infill shows the formation of cracks at their interface with the fluctuation of temperature and humidity. Geopolymer binder has been identified to create good adhesion between these two materials. The aim of the study is to characterize the pullout and shear mechanical behavior of laboratory masonry assemblies of wood, geomaterial binder and extruded earth brick. Compression test on the brick were also performed. Full-field deformation of double shear test sample werecarried-out by digital image correlation (DIC) in order to better describe and understand the mechanical behavior. The geopolymer binder show good adhesion properties with mean shear test results around 1.5 MPa and pullout test result around 0.82MPa.

DOUBLE SHEAR TEST BEHAVIOUR OF BALAU SPECIES FOR DIFFERENT END DISTANCE

2016 ◽  
Vol 78 (5-4) ◽  
Author(s):  
Nor Jihan Abd Malek ◽  
Rohana Hassan ◽  
Elamin Mohamed Ali ◽  
Mohd Nizam Shakimon
Keyword(s):  
Shear Test ◽  
Failure Modes ◽  
Failure Behavior ◽  
Timber Species ◽  
Yield Model ◽  
Timber Joint ◽  
Double Shear ◽  
End Distance ◽  
Double Shear Test ◽  
Bolt Diameter

Timber connection is the most important part in timber structural building. In design, it depends on parameter criteria such as bolt diameter, bolt spacing, edge and end distance. End distance is one of design criteria that will influence mechanical timber joint such in single and double shear. This study focuses for a single fastener joint loaded in double shear with 12mm and 16mm bolt diameters having 30mm and 40mm end distance respectively. Double shear test was conducted on Balau timber species and the finding also focuses on the pattern failure modes with reference to European Yield Model (EYM) theory according to National Design Specification (NDS) 2005. It shows that the joint ability to withstand load decreased when the bolt diameter and end distance smaller and conversely with larger bolt diameter. The failure behavior for 12mm diameter tends to fail into category IIIs which described two plastic hinges formed with crushing of wood fibres in the side members. While, 16mm diameter bolt tends to fail under categories of mode Is which dowel bearing failure or crushing of the side members. Eventually, 12mm bolt diameter produces lower shear strength compared to 16mm bolt diameter. 

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