Strengthening of Single Bay Tunnel Form Building using Steel Angle, Steel Plate and CFRP Under Out-of-Plane Cyclic Loading

2015 ◽  
Keyword(s):  
Cyclic Loading ◽  
Steel Plate ◽  
Steel Angle ◽  
Out Of Plane ◽  
Angle Steel

Retrofitting of Single Unit Tunnel Form Building Using Steel Plate under Out-of-Plane Lateral Cyclic Loading

2014 ◽  
Vol 661 ◽  
pp. 95-99 ◽  
Author(s):  
Shamilah Anudai Anuar ◽  
Nor Hayati Hamid ◽  
M.H. Hashim
Keyword(s):  
Cyclic Loading ◽  
Single Unit ◽  
Steel Plate ◽  
Hysteresis Loops ◽  
Seismic Loading ◽  
Visual Observation ◽  
Equivalent Viscous Damping ◽  
Before And After ◽  
Out Of Plane ◽  
Lateral Strength

A one-third scale single unit of 3-storey tunnel form building with foundation beam was designed, constructed and tested under out-of-plane lateral cyclic loading. This building was designed according to BS8110 with no provision for seismic loading. Tunnel form building was initially tested at ±0.01% , ±0.1%, ±0.25%, ±0.5%, ±0.75%, ±1.00%, ±1.25% and ±1.5% drifts until the structure lost its lateral strength (strength degradation). Then, the specimen was repaired and retrofitted using steel plate and angle which was positioned at the wall-slab joints that had suffered severe damages. A similar drift of displacement before retrofitting was repeated for the specimen after being retrofitted. Visual observation of damages, hysteresis loops, stiffness, ductility and equivalent viscous damping (EVD) of the specimen were analyzed and compared before and after retrofitting. The proposed retrofitting technique has increased its lateral strength by 26%. Fewer cracks occurred after retrofitting the specimen compared to before retrofitting. It can be concluded that steel plate and angle can strengthen the wall-slab joint and this method can be used to retrofit the tunnel form building if it had been damaged caused by earthquake excitations.

Fatigue of Steel Plate Panels due to Repeated Out-of-plane Deflection under Cyclic Loads

2004 ◽  
Vol 88 (6) ◽  
pp. 397-402
Author(s):  
Duncan Paterson ◽  
Ben T. Yen ◽  
John W. Fisher
Keyword(s):  
Steel Plate ◽  
Cyclic Loads ◽  
Out Of Plane ◽  
Plate Panels

scholarly journals Graphene fatigue through van der Waals interactions

2020 ◽  
Vol 6 (42) ◽  
pp. eabb1335
Author(s):  
Teng Cui ◽  
Kevin Yip ◽  
Aly Hassan ◽  
Guorui Wang ◽  
Xingjian Liu ◽  
...  
Keyword(s):  
Cyclic Loading ◽  
Flexible Electronics ◽  
Shear Fracture ◽  
Van Der Waals ◽  
Van Der Waals Interactions ◽  
Pristine Graphene ◽  
Plane Shear ◽  
Dynamic Reliability ◽  
Polymer Interface ◽  
Out Of Plane

Graphene is often in contact with other materials through weak van der Waals (vdW) interactions. Of particular interest is the graphene-polymer interface, which is constantly subjected to dynamic loading in applications, including flexible electronics and multifunctional coatings. Through in situ cyclic loading, we directly observed interfacial fatigue propagation at the graphene-polymer interface, which was revealed to satisfy a modified Paris’ law. Furthermore, cyclic loading through vdW contact was able to cause fatigue fracture of even pristine graphene through a combined in-plane shear and out-of-plane tear mechanism. Shear fracture was found to mainly initiate at the fold junctions induced by cyclic loading and propagate parallel to the loading direction. Fracture mechanics analysis was conducted to explain the kinetics of an exotic self-tearing behavior of graphene during cyclic loading. This work offers mechanistic insights into the dynamic reliability of graphene and graphene-polymer interface, which could facilitate the durable design of graphene-based structures.

Investigation of semi-supported steel plate shear walls with different infill plates under cyclic loading

2020 ◽  
pp. 1-24
Author(s):  
Yan Cao ◽  
Mohammad Hasan Asadi ◽  
Rayed Alyousef ◽  
Shahrizan Baharom ◽  
Abdulaziz Alaskar ◽  
...  
Keyword(s):  
Cyclic Loading ◽  
Steel Plate ◽  
Shear Walls ◽  
Steel Plate Shear Walls

scholarly journals Connection of infill panels in steel plate shear walls

1999 ◽  
Vol 26 (5) ◽  
pp. 549-563 ◽  
Author(s):  
A Schumacher ◽  
G Y Grondin ◽  
G L Kulak
Keyword(s):  
Finite Element ◽  
Cyclic Loading ◽  
Steel Plate ◽  
Shear Walls ◽  
Element Model ◽  
Shear Wall ◽  
Experimental Program ◽  
Steel Plate Shear Wall ◽  
Infill Panels ◽  
Welded Connection

The behaviour under cyclic loading of unstiffened steel plate shear wall panels at their connection to the bounding beams and columns was investigated on full-size panel corner details. Four different infill panel connection details were tested to examine and compare their response to quasi-static cyclic loading. The load versus displacement response of the details showed gradual and stable deterioration at higher loads. The formation of tears in the connection details did not result in a loss of load-carrying capacity. In addition to the experimental program, a finite element model was developed to model the behaviour of one of the infill plate corner connection specimens. Results from the analysis showed that the finite element method can be used to obtain the load versus displacement behaviour of an infill panel-to-boundary member arrangement.Key words: cyclic loading, hysteresis, shear wall, steel, welded connection.

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